Merge pull request #38 from eclipse-threadx/bo-ms/add_revision_history

Add revision history file.
Merge branch 'master' into bo-ms/add_revision_history
2026-09-14 12:37:01 +08:00 · 2024-02-27 17:24:08 -08:00 · 2024-02-27 17:14:01 -08:00 · 2024-02-27 17:11:51 -08:00 · 2024-02-27 17:07:24 -08:00 · 2024-02-27 16:58:07 +08:00
83 changed files with 7493 additions and 1108 deletions
@@ -0,0 +1,13 @@
+{
+    "image": "ghcr.io/tiejunms/azure_rtos_docker",
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"ms-vscode.cpptools",
+		"ms-vscode.cmake-tools"
+	],
+
+	"remoteUser": "vscode",
+
+    "runArgs": [ "--cap-add=NET_ADMIN"]
+}
@@ -0,0 +1,25 @@
+# This is a basic workflow that is manually triggered
+
+name: regression_test
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  workflow_dispatch:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "linux_job"
+  run_tests:
+    permissions:
+      contents: read
+      issues: read
+      checks: write
+      pull-requests: write
+      pages: write
+      id-token: write
+    uses: azure-rtos/threadx/.github/workflows/regression_template.yml@master
@@ -1,14 +1,72 @@
-# Contributing
+# Contributing to Eclipse ThreadX

-This project welcomes contributions and suggestions. Most contributions require you to
-agree to a Contributor License Agreement (CLA) declaring that you have the right to,
-and actually do, grant us the rights to use your contribution. For details, visit
-https://cla.microsoft.com.
+Thanks for your interest in this project.

-When you submit a pull request, a CLA-bot will automatically determine whether you need
-to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the
-instructions provided by the bot. You will only need to do this once across all repositories using our CLA.
+## Project description

-This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
-For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/)
-or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
+Eclipse ThreadX provides a vendor-neutral, open source, safety certified OS for
+real-time applications published on under a permissive license. The Eclipse
+ThreadX suite encompasses:  
+* ThreadX - advanced real-time operating system (RTOS) designed specifically for deeply embedded applications
+* NetX Duo - advanced, industrial-grade TCP/IP network stack designed specifically for deeply embedded real-time and IoT applications
+* FileX - high-performance, FAT-compatible file system that’s fully integrated with ThreadX kernel
+* GUIX - provides a complete, embedded graphical user interface (GUI) library
+* USBX - high-performance USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with ThreadX kernel
+* LevelX - Flash Wear Leveling for FileX and stand-alone purposes
+* GuiX Studio - design environment, facilitating the creation and maintenance of all graphical elements for GUIX
+* TraceX - analysis tool that provides a graphical view of real-time system events to better understand the behavior of real-time systems
+
+Project site: https://projects.eclipse.org/projects/iot.threadx
+
+## Terms of Use
+
+This repository is subject to the Terms of Use of the Eclipse Foundation  
+https://www.eclipse.org/legal/termsofuse.php
+
+## Developer resources
+
+Information regarding source code management, builds, coding standards, and more.
+https://projects.eclipse.org/projects/iot.threadx/developer
+
+The project maintains the following source code repositories
+
+* https://github.com/eclipse-threadx/.github
+* https://github.com/eclipse-threadx/cmsis-packs
+* https://github.com/eclipse-threadx/filex
+* https://github.com/eclipse-threadx/getting-started
+* https://github.com/eclipse-threadx/guix
+* https://github.com/eclipse-threadx/levelx
+* https://github.com/eclipse-threadx/netxduo
+* https://github.com/eclipse-threadx/rtos-docs
+* https://github.com/eclipse-threadx/samples
+* https://github.com/eclipse-threadx/threadx
+* https://github.com/eclipse-threadx/threadx-learn-samples
+* https://github.com/eclipse-threadx/tracex
+* https://github.com/eclipse-threadx/usbx
+
+## Eclipse Development Process
+
+This Eclipse Foundation open project is governed by the Eclipse Foundation
+Development Process and operates under the terms of the Eclipse IP Policy.
+
+* https://eclipse.org/projects/dev_process
+* https://www.eclipse.org/org/documents/Eclipse_IP_Policy.pdf
+
+## Eclipse Contributor Agreement
+
+In order to be able to contribute to Eclipse Foundation projects you must electronically sign the Eclipse Contributor Agreement (ECA).  
+https://www.eclipse.org/legal/ECA.php
+
+The ECA provides the Eclipse Foundation with a permanent record that you agree
+that each of your contributions will comply with the commitments documented in
+the Developer Certificate of Origin (DCO). Having an ECA on file associated with
+the email address matching the "Author" field of your contribution's Git commits
+fulfills the DCO's requirement that you sign-off on your contributions.
+
+For more information, please see the Eclipse Committer Handbook:  
+https://www.eclipse.org/projects/handbook/#resources-commit
+
+## Contact
+
+Contact the project developers via the project's "dev" list.  
+https://accounts.eclipse.org/mailing-list/threadx-dev
@@ -1,246 +1,21 @@
-MICROSOFT SOFTWARE LICENSE TERMS 
+MIT License

-MICROSOFT AZURE RTOS 
+Copyright (c) 2024 - present Microsoft Corporation

-Shape 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:

-These license terms are an agreement between you and Microsoft Corporation (or
-one of its affiliates). They apply to the software named above and any Microsoft
-services or software updates (except to the extent such services or updates are
-accompanied by new or additional terms, in which case those different terms
-apply prospectively and do not alter your or Microsoft’s rights relating to
-pre-updated software or services). IF YOU COMPLY WITH THESE LICENSE TERMS, YOU
-HAVE THE RIGHTS BELOW.  BY USING THE SOFTWARE, YOU ACCEPT THESE TERMS. 
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.

-1. INSTALLATION AND USE RIGHTS.  
-
-a) General. You may install and use the software and the included Microsoft
-applications solely for internal development, testing and evaluation purposes.
-Any distribution or production use requires a separate license as set forth in
-Section 2.  
-
-b) Contributions. Microsoft welcomes contributions to this software. In the event
-that you make a contribution to this software you will be required to agree to a
-Contributor License Agreement (CLA) declaring that you have the right to, and
-actually do, grant Microsoft the rights to use your contribution. For details,
-visit https://cla.microsoft.com.  
-
-c) Included Microsoft Applications. The software includes other Microsoft
-applications which are governed by the licenses embedded in or made available
-with those applications.  
-
-d) Third Party Components. The software may include third party components with
-separate legal notices or governed by other agreements, as may be described
-within the software or in the ThirdPartyNotices file(s) accompanying the
-software. 
-
-e) Competitive Benchmarking. If you are a direct competitor, and you access or use
-the software for purposes of competitive benchmarking, analysis, or intelligence
-gathering, you waive as against Microsoft, its subsidiaries, and its affiliated
-companies (including prospectively) any competitive use, access, and
-benchmarking test restrictions in the terms governing your software to the
-extent your terms of use are, or purport to be, more restrictive than
-Microsoft’s terms. If you do not waive any such purported restrictions in the
-terms governing your software, you are not allowed to access or use this
-software, and will not do so. 
-
-2. DISTRIBUTION AND PRODUCTION USE. If you have obtained and/or are developing on
-microprocessor(s) and/or microcontroller(s) (“hardware”) listed in the file
-named “LICENSED-HARDWARE.txt” included in the repository and/or distributed with
-the software you have the following rights in and to the software solely when
-used in combination with the hardware. In the event hardware is not listed in
-the LICENSED-HARDWARE.txt file, you do not have the rights in this Section 2. 
-
-a) Distribution and Production Use Rights.  
-
-i. You may use the software in production (e.g. program the modified or unmodified
-software to devices you own or control) and distribute (i.e. make available to
-third parties) the modified or unmodified binary image produced from this code.
-
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-ii. You may permit your device distributors or developers to copy and distribute the
-binary image as programmed or to be programmed to your devices. 
-
-iii. You may redistribute the unmodified or modified source to your device
-distributors or developers. Modifications must be clearly marked. Any
-redistribution in source code form must contain this license and any other
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-
-b) Requirements. For any code you distribute, you must: 
-
-i. when distributed in binary form, except as embedded in a device, include with
-such distribution the terms of this agreement;  
-
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-devices, include with such distribution the terms of this agreement; and 
-
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-attorneys’ fees, related to the distribution or use of your devices, except to
-the extent that any claim is based solely on the unmodified software. 
-
-c) Restrictions. You may not: 
-
-i. use or modify the software to create a competing real time operating system
-software;  
-
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-
-iii. use Microsoft’s trademarks or trade dress in your application in any way that
-suggests your device or application comes from or is endorsed by Microsoft;  
-
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-fragments of the software separately for purposes unrelated to the software; or 
-
-v. use or distribute the software in any way that would subject the software or
-Microsoft’s intellectual property or technology to any other license terms. 
-
-3. SCOPE OF LICENSE. The software is licensed, not sold. Microsoft reserves all
-other rights. Unless applicable law gives you more rights despite this
-limitation, you will not (and have no right to): 
-
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-the software; 
-
-b) use the software in any way that is against the law or to create or propagate
-malware; or 
-
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-Section 2 above), or provide the software as a stand-alone offering for others
-to use. 
-
-4. DATA. This software may interact with other Microsoft products that collect data
-that is transmitted to Microsoft. To learn more about how Microsoft processes
-personal data we collect, please see the Microsoft Privacy Statement at
-https://go.microsoft.com/fwlink/?LinkId=248681. 
-
-5. EXPORT RESTRICTIONS. You must comply with all domestic and international export
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-
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-
-11. CONSUMER RIGHTS; REGIONAL VARIATIONS. This agreement describes certain legal
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-you may also have rights with respect to the party from which you acquired the
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-
-12. DISCLAIMER OF WARRANTY. THE SOFTWARE IS LICENSED “AS IS.” YOU BEAR THE RISK OF
-USING IT. MICROSOFT GIVES NO EXPRESS WARRANTIES, GUARANTEES, OR CONDITIONS. TO
-THE EXTENT PERMITTED UNDER APPLICABLE LAWS, MICROSOFT EXCLUDES ALL IMPLIED
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-RECOVER ANY OTHER DAMAGES, INCLUDING CONSEQUENTIAL, LOST PROFITS, SPECIAL,
-INDIRECT, OR INCIDENTAL DAMAGES. 
-
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-
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-possibility of the damages. The above limitation or exclusion may not apply to
-you because your state, province, or country may not allow the exclusion or
-limitation of incidental, consequential, or other damages. 
-
- 
-
-Please note: As this software is distributed in Canada, some of the clauses in
-this agreement are provided below in French. 
-
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-contrat sont fournies ci-dessous en français. 
-
-EXONÉRATION DE GARANTIE. Le logiciel visé par une licence est offert « tel quel
-». Toute utilisation de ce logiciel est à votre seule risque et péril. Microsoft
-n’accorde aucune autre garantie expresse. Vous pouvez bénéficier de droits
-additionnels en vertu du droit local sur la protection des consommateurs, que ce
-contrat ne peut modifier. La ou elles sont permises par le droit locale, les
-garanties implicites de qualité marchande, d’adéquation à un usage particulier
-et d’absence de contrefaçon sont exclues. 
-
-LIMITATION DES DOMMAGES-INTÉRÊTS ET EXCLUSION DE RESPONSABILITÉ POUR LES
-DOMMAGES. Vous pouvez obtenir de Microsoft et de ses fournisseurs une
-indemnisation en cas de dommages directs uniquement à hauteur de 5,00 $ US. Vous
-ne pouvez prétendre à aucune indemnisation pour les autres dommages, y compris
-les dommages spéciaux, indirects ou accessoires et pertes de bénéfices. 
-
-Cette limitation concerne: 
-
-•tout ce qui est relié au logiciel, aux services ou au contenu (y compris le
-code) figurant sur des sites Internet tiers ou dans des programmes tiers; et 
-
-•les réclamations au titre de violation de contrat ou de garantie, ou au titre
-de responsabilité stricte, de négligence ou d’une autre faute dans la limite
-autorisée par la loi en vigueur. 
-
-Elle s’applique également, même si Microsoft connaissait ou devrait connaître
-l’éventualité d’un tel dommage. Si votre pays n’autorise pas l’exclusion ou la
-limitation de responsabilité pour les dommages indirects, accessoires ou de
-quelque nature que ce soit, il se peut que la limitation ou l’exclusion
-ci-dessus ne s’appliquera pas à votre égard. 
-
-EFFET JURIDIQUE. Le présent contrat décrit certains droits juridiques. Vous
-pourriez avoir d’autres droits prévus par les lois de votre pays. Le présent
-contrat ne modifie pas les droits que vous confèrent les lois de votre pays si
-celles-ci ne le permettent pas. 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -1,45 +0,0 @@
-LICENSED HARDWARE LIST
-
-Last Updated: 2023-02-10
-
-Microsoft has entered into OEM Agreements with manufacturers of the following
-microprocessors and microcontrollers (the “hardware”) to enable those
-manufacturers to include and distribute Azure RTOS in certain hardware. If you
-have obtained and/or are developing on microprocessor(s) and/or
-microcontroller(s) (“hardware”) listed below you inherit the “Distribution and
-Production Use” rights in Section 2 of the Microsoft Software License Terms for
-Microsoft Azure RTOS. If hardware is not listed below, you do not have those
-rights.
-
-
-STMicroelectronics:
-
-    STM32 MCUs
-    STM32 MPUs
-
-MediaTek:
-
-    MT3620 MCU (Azure Sphere)
-
-Microchip:
-
-    PIC 32-bit MCUs
-    SAM 32-bit MCUs
-    SAM 32-bit MPUs
-
-NXP:
-
-    i.MX RT10xx and RT116x/7x series crossover MCUs
-    LPC5500 series
-    MCX N series
-
-Renesas:
-
-    Synergy Platform
-    RX Family of MCUs
-    RA Family of MCUs
-    RZ/A, RZ/N and RZ/T Family of MPUs
-
--------------------------------------------------------------------------------
-
-More coming soon. Please check back frequently for updates.
@@ -1,12 +1,12 @@
-# Azure RTOS LevelX
+# Eclipse ThreadX LevelX

 LevelX provides NAND and NOR flash wear leveling facilities to embedded applications. Since both NAND and NOR flash memory can only be erased a finite number of times, it’s critical to distribute the flash memory use evenly. This is typically called **wear leveling** and is the purpose behind LevelX. LevelX presents to the user an array of logical sectors that are mapped to physical flash memory inside of LevelX. Applications may use LevelX in conjunction with FileX or may read/write logical sectors directly. LevelX is designed for fault tolerance. Flash updates are performed in a multiple-step process that can be interrupted in each step. LevelX automatically recovers to the optimal state during the next operation.

 ## Getting Started

-Azure RTOS LevelX as part of Azure RTOS has been integrated to the semiconductor's SDKs and development environment. You can develop using the tools of choice from [STMicroelectronics](https://www.st.com/content/st_com/en/campaigns/x-cube-azrtos-azure-rtos-stm32.html), [NXP](https://www.nxp.com/design/software/embedded-software/azure-rtos-for-nxp-microcontrollers:AZURE-RTOS), [Renesas](https://github.com/renesas/azure-rtos) and [Microchip](https://mu.microchip.com/get-started-simplifying-your-iot-design-with-azure-rtos).
+LevelX as part of Eclipse ThreadX has been integrated to the semiconductor's SDKs and development environment. You can develop using the tools of choice from [STMicroelectronics](https://www.st.com/content/st_com/en/campaigns/x-cube-azrtos-azure-rtos-stm32.html), [NXP](https://www.nxp.com/design/software/embedded-software/azure-rtos-for-nxp-microcontrollers:AZURE-RTOS), [Renesas](https://github.com/renesas/azure-rtos) and [Microchip](https://mu.microchip.com/get-started-simplifying-your-iot-design-with-azure-rtos).

-See [Overview of Azure RTOS LevelX](https://learn.microsoft.com/azure/rtos/levelx/overview-levelx) for the high-level overview, and all documentation and APIs can be found in: [Azure RTOS LevelX documentation](https://learn.microsoft.com/azure/rtos/levelx/).
+See [Overview of Eclipse ThreadX LevelX](https://github.com/eclipse-threadx/rtos-docs/blob/main/rtos-docs/levelx/index.md) for the high-level overview.

 ## Repository Structure and Usage

@@ -19,7 +19,7 @@ See [Overview of Azure RTOS LevelX](https://learn.microsoft.com/azure/rtos/level
    ├── LICENSE.txt             # License terms
    ├── LICENSE-HARDWARE.txt    # Licensed hardware from semiconductors
    ├── CONTRIBUTING.md         # Contribution guidance
-    └── SECURITY.md             # Microsoft repo security guidance
+    └── SECURITY.md             # Repo security guidance

 ### Branches & Releases

@@ -74,7 +74,7 @@ The master branch has the most recent code with all new features and bug fixes.

 ## Component dependencies

-The main components of Azure RTOS are each provided in their own repository, but there are dependencies between them, as shown in the following graph. This is important to understand when setting up your builds.
+The main components of Eclipse ThreadX are each provided in their own repository, but there are dependencies between them, as shown in the following graph. This is important to understand when setting up your builds.

 ![dependency graph](docs/deps.png)

@@ -82,7 +82,7 @@ The main components of Azure RTOS are each provided in their own repository, but

 ### Building and using the library

-Instruction for building the LevelX as static library using Arm GNU Toolchain and CMake. If you are using toolchain and IDE from semiconductor, you might follow its own instructions to use Azure RTOS components as explained in the [Getting Started](#getting-started) section.
+Instruction for building the LevelX as static library using Arm GNU Toolchain and CMake. If you are using toolchain and IDE from semiconductor, you might follow its own instructions to use Eclipse ThreadX components as explained in the [Getting Started](#getting-started) section.

 1. Install the following tools:

@@ -95,14 +95,14 @@ Instruction for building the LevelX as static library using Arm GNU Toolchain an
 1. Cloning the repo.

    ```bash
-    $ git clone --recursive https://github.com/azure-rtos/levelx.git
+    $ git clone --recursive https://github.com/eclipse-threadx/levelx.git
    ```

 1. Define the features and addons you need in `lx_user.h` and build together with the component source code. You can refer to [`lx_user_sample.h`](https://github.com/azure-rtos/levelx/blob/master/common/inc/lx_user_sample.h) as an example.

 1. Building as a static library

-    Each component of Azure RTOS comes with a composable CMake-based build system that supports many different MCUs and host systems. Integrating any of these components into your device app code is as simple as adding a git submodule and then including it in your build using the CMake `add_subdirectory()`.
+    Each component of Eclipse ThreadX comes with a composable CMake-based build system that supports many different MCUs and host systems. Integrating any of these components into your device app code is as simple as adding a git submodule and then including it in your build using the CMake `add_subdirectory()`.

    While the typical usage pattern is to include LevelX into your device code source tree to be built & linked with your code, you can compile this project as a standalone static library to confirm your build is set up correctly.

@@ -114,31 +114,23 @@ Instruction for building the LevelX as static library using Arm GNU Toolchain an
    $ cmake --build ./build
    ```

-## Professional support
-
-[Professional support plans](https://azure.microsoft.com/support/options/) are available from Microsoft. For community support and others, see the [Resources](#resources) section below.
-
 ## Licensing

-License terms for using Azure RTOS are defined in the LICENSE.txt file of this repo. Please refer to this file for all definitive licensing information. No additional license fees are required for deploying Azure RTOS on hardware defined in the [LICENSED-HARDWARE.txt](./LICENSED-HARDWARE.txt) file. If you are using hardware not listed in the file or having licensing questions in general, please contact Microsoft directly at https://aka.ms/azrtos-license.
+License terms for using Eclipse ThreadX are defined in the LICENSE.txt file of this repo. Please refer to this file for all definitive licensing information.

 ## Resources

-The following are references to additional Azure RTOS resources:
+The following are references to additional Eclipse ThreadX resources:

- **Product introduction and white papers**: https://azure.com/rtos
- **General technical questions**: https://aka.ms/QnA/azure-rtos
- **Product issues and bugs, or feature requests**: https://github.com/azure-rtos/levelx/issues
- **Licensing and sales questions**: https://aka.ms/azrtos-license
- **Product roadmap and support policy**: https://aka.ms/azrtos/lts
- **Blogs and videos**: http://msiotblog.com and https://aka.ms/iotshow
- **Azure RTOS TraceX Installer**: https://aka.ms/azrtos-tracex-installer
+- **Product introduction**: https://github.com/eclipse-threadx/rtos-docs
+- **Product issues and bugs, or feature requests**: https://github.com/eclipse-threadx/levelx/issues
+- **TraceX Installer**: https://aka.ms/azrtos-tracex-installer

-You can also check [previous questions](https://stackoverflow.com/questions/tagged/azure-rtos+levelx) or ask new ones on StackOverflow using the `azure-rtos` and `levelx` tags.
+You can also check [previous questions](https://stackoverflow.com/questions/tagged/azure-rtos+levelx) or ask new ones on StackOverflow using the `threadx` and `levelx` tags.

 ## Security

-Azure RTOS provides OEMs with components to secure communication and to create code and data isolation using underlying MCU/MPU hardware protection mechanisms. It is ultimately the responsibility of the device builder to ensure the device fully meets the evolving security requirements associated with its specific use case.
+Eclipse ThreadX provides OEMs with components to secure communication and to create code and data isolation using underlying MCU/MPU hardware protection mechanisms. It is ultimately the responsibility of the device builder to ensure the device fully meets the evolving security requirements associated with its specific use case.

 ## Contribution

@@ -1,35 +1,20 @@
-## Security
+# Security Policy

-Microsoft takes the security of our software products and services seriously, which includes all source code repositories managed through our GitHub organizations, which include [Microsoft](https://github.com/Microsoft), [Azure](https://github.com/Azure), [DotNet](https://github.com/dotnet), [AspNet](https://github.com/aspnet), [Xamarin](https://github.com/xamarin), and [our GitHub organizations](https://opensource.microsoft.com/).
+## Supported Versions

-If you believe you have found a security vulnerability in any Microsoft-owned repository that meets Microsoft's [Microsoft's definition of a security vulnerability](https://docs.microsoft.com/en-us/previous-versions/tn-archive/cc751383(v=technet.10)), please report it to us as described below.
+| Version | Supported          |
+| ------- | ------------------ |
+| 6.4.x   | :white_check_mark: |

-## Reporting Security Issues
+## Reporting a Vulnerability

-**Please do not report security vulnerabilities through public GitHub issues.**
+If you think you have found a vulnerability in <project> you can report it using one of the following ways:

-Instead, please report them to the Microsoft Security Response Center (MSRC) at [https://msrc.microsoft.com/create-report](https://msrc.microsoft.com/create-report).
+* Contact the [Eclipse Foundation Security Team](mailto:security@eclipse-foundation.org)
+* [Report a Vulnerability](https://github.com/eclipse-threadx/levelx/security/advisories/new)

-If you prefer to submit without logging in, send email to [secure@microsoft.com](mailto:secure@microsoft.com).  If possible, encrypt your message with our PGP key; please download it from the the [Microsoft Security Response Center PGP Key page](https://www.microsoft.com/en-us/msrc/pgp-key-msrc).
+You can find more information about reporting and disclosure at the [Eclipse Foundation Security page](https://www.eclipse.org/security/).

-You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Additional information can be found at [microsoft.com/msrc](https://www.microsoft.com/msrc).
+## Security Policy

-Please include the requested information listed below (as much as you can provide) to help us better understand the nature and scope of the possible issue:
-
-  * Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.)
-  * Full paths of source file(s) related to the manifestation of the issue
-  * The location of the affected source code (tag/branch/commit or direct URL)
-  * Any special configuration required to reproduce the issue
-  * Step-by-step instructions to reproduce the issue
-  * Proof-of-concept or exploit code (if possible)
-  * Impact of the issue, including how an attacker might exploit the issue
-
-This information will help us triage your report more quickly.
-
-## Preferred Languages
-
-We prefer all communications to be in English.
-
-## Policy
-
-Microsoft follows the principle of [Coordinated Vulnerability Disclosure](https://www.microsoft.com/en-us/msrc/cvd).
+This project follows [Eclipse Foundation Vulnerability Reporting Policy](https://www.eclipse.org/security/policy/).
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -26,7 +25,7 @@
 /*  APPLICATION INTERFACE DEFINITION                       RELEASE        */
 /*                                                                        */
 /*    lx_api.h                                            PORTABLE C      */
-/*                                                           6.2.1       */
+/*                                                           6.4.1        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -79,7 +78,19 @@
 /*                                            modified NAND logic,        */
 /*                                            added new driver interface  */
 /*                                            and user extension,         */
-/*                                            resulting in version 6.2.1 */
+/*                                            resulting in version 6.2.1  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            made LX_NOR_SECTOR_SIZE     */
+/*                                            configurable, added mapping */
+/*                                            bitmap and obsolete count   */
+/*                                            cache for NOR flash,        */
+/*                                            resulting in version 6.3.0  */
+/*  12-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added configuration checks, */
+/*                                            resulting in version 6.4.0  */
+/*  03-01-2024      Tiejun Zhou             Modified comment(s),          */
+/*                                            update version number,      */
+/*                                            resulting in version 6.4.1  */
 /*                                                                        */
 /**************************************************************************/

@@ -191,7 +202,7 @@ typedef unsigned long long                      ULONG64;
 /* Define basic constants for the LevelX Stack.  */
 #define AZURE_RTOS_LEVELX
 #define LEVELX_MAJOR_VERSION                        6
-#define LEVELX_MINOR_VERSION                        2
+#define LEVELX_MINOR_VERSION                        4
 #define LEVELX_PATCH_VERSION                        1


@@ -233,7 +244,9 @@ typedef unsigned long long                      ULONG64;

 #define LX_NOR_FLASH_OPENED                         ((ULONG) 0x4E4F524F)
 #define LX_NOR_FLASH_CLOSED                         ((ULONG) 0x4E4F5244)
+#ifndef LX_NOR_SECTOR_SIZE
 #define LX_NOR_SECTOR_SIZE                          (512/sizeof(ULONG))
+#endif
 #define LX_NOR_FLASH_MIN_LOGICAL_SECTOR_OFFSET      1
 #define LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET      2
 #ifndef LX_NOR_FLASH_MAX_ERASE_COUNT_DELTA
@@ -246,6 +259,11 @@ typedef unsigned long long                      ULONG64;
 #ifndef LX_NOR_EXTENDED_CACHE_SIZE
 #define LX_NOR_EXTENDED_CACHE_SIZE                  8           /* Maximum number of extended cache sectors.            */
 #endif
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+#ifndef LX_NOR_OBSOLETE_COUNT_CACHE_TYPE
+#define LX_NOR_OBSOLETE_COUNT_CACHE_TYPE            UCHAR
+#endif
+#endif


 /* Define the mask for the hash index into the sector mapping cache table.  The sector mapping cache is divided 
@@ -266,6 +284,19 @@ typedef unsigned long long                      ULONG64;
 #define LX_NOR_PHYSICAL_SECTOR_FREE                 0xFFFFFFFF


+/* Check extended cache configurations.  */
+#ifdef LX_NOR_DISABLE_EXTENDED_CACHE
+
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+#error "To enable mapping bitmap, you need to undefine LX_NOR_DISABLE_EXTENDED_CACHE."
+#endif
+
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+#error "To enable obsolete count cache, you need to undefine LX_NOR_DISABLE_EXTENDED_CACHE."
+#endif
+
+#endif
+
 /* Define NAND flash constants.  */

 #define LX_NAND_GOOD_BLOCK                          0xFF
@@ -566,6 +597,7 @@ typedef struct LX_NOR_FLASH_STRUCT
    ULONG                           lx_nor_flash_mapped_physical_sectors;
    ULONG                           lx_nor_flash_obsolete_physical_sectors;
    ULONG                           lx_nor_flash_minimum_erase_count;
+    ULONG                           lx_nor_flash_minimum_erased_blocks;
    ULONG                           lx_nor_flash_maximum_erase_count;

    ULONG                           lx_nor_flash_free_block_search;
@@ -616,6 +648,15 @@ typedef struct LX_NOR_FLASH_STRUCT
                                    lx_nor_flash_extended_cache[LX_NOR_EXTENDED_CACHE_SIZE];
    ULONG                           lx_nor_flash_extended_cache_hits;
    ULONG                           lx_nor_flash_extended_cache_misses;
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+    ULONG                           *lx_nor_flash_extended_cache_mapping_bitmap;
+    ULONG                           lx_nor_flash_extended_cache_mapping_bitmap_max_logical_sector;
+#endif
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+    LX_NOR_OBSOLETE_COUNT_CACHE_TYPE
+                                    *lx_nor_flash_extended_cache_obsolete_count;
+    ULONG                           lx_nor_flash_extended_cache_obsolete_count_max_block;
+#endif      
 #endif

 #ifdef LX_THREAD_SAFE_ENABLE
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -26,7 +25,7 @@
 /*  PORT SPECIFIC C INFORMATION                            RELEASE        */
 /*                                                                        */
 /*    lx_user.h                                           PORTABLE C      */
-/*                                                           6.2.1       */
+/*                                                           6.3.0        */
 /*                                                                        */
 /*  AUTHOR                                                                */
 /*                                                                        */
@@ -50,7 +49,12 @@
 /*                                            resulting in version 6.1.7  */
 /*  03-08-2023     Xiuwen Cai               Modified comment(s), and      */
 /*                                            added new NAND options,     */
-/*                                            resulting in version 6.2.1 */
+/*                                            resulting in version 6.2.1  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added options for mapping , */
+/*                                            bitmap cache and obsolete   */
+/*                                            count cache,                */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/

@@ -113,15 +117,39 @@

 /* #define LX_STANDALONE_ENABLE */

-/* Define user extension for NOR flash control block.  */
+/* Define user extension for NOR flash control block. User extension is placed at the end of flash control block and it is not cleared on opening flash. */
 /* 
 #define LX_NOR_FLASH_USER_EXTENSION    ????
 */

-/* Define user extension for NAND flash control block.  */
+/* Define user extension for NAND flash control block. User extension is placed at the end of flash control block and it is not cleared on opening flash.  */
 /* 
 #define LX_NAND_FLASH_USER_EXTENSION   ????
 */

+/* Determine if logical sector mapping bitmap should be enabled in extended cache. 
+   Cache memory will be allocated to sector mapping bitmap first. One bit can be allocated for each physical sector.  */
+/* 
+#define LX_NOR_ENABLE_MAPPING_BITMAP
+*/
+
+/* Determine if obsolete count cache should be enabled in extended cache.  
+   Cache memory will be allocated to obsolete count cache after the mapping bitmap if enabled, 
+   and the rest of the cache memory is allocated to sector cache.  */
+/* 
+#define LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+*/
+
+/* Defines obsolete count cache element size. If number of sectors per block is greater than 256, use USHORT instead of UCHAR.  */
+/* 
+#define LX_NOR_OBSOLETE_COUNT_CACHE_TYPE            UCHAR
+*/
+
+/* Define the logical sector size for NOR flash. The sector size is in units of 32-bit words. 
+   This sector size should match the sector size used in file system.  */
+/*
+#define LX_NOR_SECTOR_SIZE                          (512/sizeof(ULONG))
+*/
+
 #endif

@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -36,19 +35,19 @@ LX_NOR_FLASH       nor_flash;
   the fx_media_open call.   

        fx_media_format(&ram_disk, 
-                            _fx_nor_sim_driver,     // Driver entry
-                            FX_NULL,                // Unused
-                            media_memory,           // Media buffer pointer
-                            sizeof(media_memory),   // Media buffer size 
-                            "MY_NOR_DISK",          // Volume Name
-                            1,                      // Number of FATs
-                            32,                     // Directory Entries
-                            0,                      // Hidden sectors
-                            120,                    // Total sectors 
-                            512,                    // Sector size   
-                            1,                      // Sectors per cluster
-                            1,                      // Heads
-                            1);                     // Sectors per track 
+                            _fx_nor_sim_driver,                 // Driver entry
+                            FX_NULL,                            // Unused
+                            media_memory,                       // Media buffer pointer
+                            sizeof(media_memory),               // Media buffer size 
+                            "MY_NOR_DISK",                      // Volume Name
+                            1,                                  // Number of FATs
+                            32,                                 // Directory Entries
+                            0,                                  // Hidden sectors
+                            120,                                // Total sectors 
+                            LX_NOR_SECTOR_SIZE * sizeof(ULONG), // Sector size   
+                            1,                                  // Sectors per cluster
+                            1,                                  // Heads
+                            1);                                 // Sectors per track 

 */

@@ -231,7 +230,7 @@ UINT        status;

                /* Move to the next entries.  */
                logical_sector++;
-                destination_buffer =  destination_buffer + 512;
+                destination_buffer =  destination_buffer + media_ptr -> fx_media_bytes_per_sector;
            }

            /* Successful driver request.  */
@@ -265,7 +264,7 @@ UINT        status;

                /* Move to the next entries.  */
                logical_sector++;
-                source_buffer =  source_buffer + 512;
+                source_buffer =  source_buffer + media_ptr -> fx_media_bytes_per_sector;
            }

            /* Successful driver request.  */
@@ -428,6 +427,15 @@ UINT        status;
        case FX_DRIVER_BOOT_WRITE:
        {

+            /* Make sure the media bytes per sector equals to the LevelX logical sector size.  */
+            if (media_ptr -> fx_media_bytes_per_sector != (LX_NOR_SECTOR_SIZE) * sizeof(ULONG))
+            {
+
+                /* Sector size mismatch, return error.  */
+                media_ptr -> fx_media_driver_status =  FX_IO_ERROR;
+                break;
+            }
+
            /* Write the boot record and return to the caller.  */

            /* Setup the source buffer.  */
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nand_flash_data_page_copy                       PORTABLE C      */ 
-/*                                                           6.2.1       */
+/*                                                           6.4.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Xiuwen Cai, Microsoft Corporation                                   */
@@ -78,7 +77,11 @@
 /*                                                                        */ 
 /*    DATE              NAME                      DESCRIPTION             */
 /*                                                                        */
-/*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1        */
+/*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1         */
+/*  12-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            fixed sequential checking   */
+/*                                            logic,                      */
+/*                                            resulting in version 6.4.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nand_flash_data_page_copy(LX_NAND_FLASH* nand_flash, ULONG logical_sector, ULONG source_block, USHORT src_block_status,
@@ -168,7 +171,7 @@ ULONG   number_of_pages;
                        }

                        /* Check if the pages in destination block is still sequential.  */
-                        if ((destination_page) != (logical_sector + i % nand_flash -> lx_nand_flash_pages_per_block))
+                        if (destination_page != ((logical_sector + i) % nand_flash -> lx_nand_flash_pages_per_block))
                        {
                            /* Mark the block status as non sequential.  */
                            dest_block_status |= LX_NAND_BLOCK_STATUS_NON_SEQUENTIAL;
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nand_flash_format                               PORTABLE C      */ 
-/*                                                           6.2.1       */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Xiuwen Cai, Microsoft Corporation                                   */
@@ -87,7 +86,12 @@
 /*                                                                        */ 
 /*    DATE              NAME                      DESCRIPTION             */
 /*                                                                        */
-/*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1        */
+/*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1         */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            avoided clearing user       */
+/*                                            extension in flash control  */
+/*                                            block,                      */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nand_flash_format(LX_NAND_FLASH* nand_flash, CHAR* name,
@@ -102,8 +106,8 @@ UCHAR                       *page_buffer_ptr;

    LX_PARAMETER_NOT_USED(name);

-    /* Clear the NAND flash control block.  */
-    LX_MEMSET(nand_flash, 0, sizeof(LX_NAND_FLASH));
+    /* Clear the NAND flash control block. User extension is not cleared.  */
+    LX_MEMSET(nand_flash, 0, (ULONG)((UCHAR*)&(nand_flash -> lx_nand_flash_open_previous) - (UCHAR*)nand_flash) + sizeof(nand_flash -> lx_nand_flash_open_previous));

    /* Call the flash driver's initialization function.  */
    (nand_driver_initialize)(nand_flash);
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nand_flash_open                                 PORTABLE C      */ 
-/*                                                           6.2.1       */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Xiuwen Cai, Microsoft Corporation                                   */
@@ -85,7 +84,12 @@
 /*                                                                        */ 
 /*    DATE              NAME                      DESCRIPTION             */
 /*                                                                        */
-/*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1        */
+/*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1         */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            avoided clearing user       */
+/*                                            extension in flash control  */
+/*                                            block,                      */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nand_flash_open(LX_NAND_FLASH  *nand_flash, CHAR *name, UINT (*nand_driver_initialize)(LX_NAND_FLASH *),
@@ -107,8 +111,8 @@ LX_INTERRUPT_SAVE_AREA

    LX_PARAMETER_NOT_USED(name);

-    /* Clear the NAND flash control block.  */
-    LX_MEMSET(nand_flash, 0, sizeof(LX_NAND_FLASH));
+    /* Clear the NAND flash control block. User extension is not cleared.  */
+    LX_MEMSET(nand_flash, 0, (ULONG)((UCHAR*)&(nand_flash -> lx_nand_flash_open_previous) - (UCHAR*)nand_flash) + sizeof(nand_flash -> lx_nand_flash_open_previous));

    /* Call the flash driver's initialization function.  */
    (nand_driver_initialize)(nand_flash);
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_block_reclaim                         PORTABLE C      */ 
-/*                                                           6.1.7        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -83,6 +82,11 @@
 /*                                            resulting in version 6.1    */
 /*  06-02-2021     Bhupendra Naphade        Modified comment(s),          */
 /*                                            resulting in version 6.1.7  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added count for minimum     */
+/*                                            erased blocks, added        */
+/*                                            obsolete count cache,       */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_block_reclaim(LX_NOR_FLASH *nor_flash)
@@ -157,6 +161,14 @@ UINT    status;
            return(status);
        }

+        /* Determine if the erase count is at the minimum.  */
+        if (erase_count == nor_flash -> lx_nor_flash_minimum_erase_count)
+        {
+            
+            /* Yes, decrement the minimum erased block count.  */
+            nor_flash -> lx_nor_flash_minimum_erased_blocks--;
+        }
+
        /* Increment the erase count.  */
        erase_count++;            

@@ -225,6 +237,16 @@ UINT    status;
        /* Update parameters of this flash.  */
        nor_flash -> lx_nor_flash_free_physical_sectors =      nor_flash -> lx_nor_flash_free_physical_sectors + obsolete_sectors;
        nor_flash -> lx_nor_flash_obsolete_physical_sectors =  nor_flash -> lx_nor_flash_obsolete_physical_sectors - obsolete_sectors;
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+
+        /* Check if the block is cached by obsolete count cache.  */
+        if (erase_block < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+        {
+
+            /* Yes, clear the obsolete count for this block.  */
+            nor_flash -> lx_nor_flash_extended_cache_obsolete_count[erase_block] =  0;
+        }
+#endif
    }
    else 
    {
@@ -489,6 +511,14 @@ UINT    status;
                return(status);
            }
        
+            /* Determine if the erase count is at the minimum.  */
+            if (erase_count == nor_flash -> lx_nor_flash_minimum_erase_count)
+            {
+                
+                /* Yes, decrement the minimum erased block count.  */
+                nor_flash -> lx_nor_flash_minimum_erased_blocks--;
+            }
+
            /* Increment the erase count.  */
            erase_count++;            

@@ -557,6 +587,16 @@ UINT    status;
            /* Update parameters of this flash.  */
            nor_flash -> lx_nor_flash_free_physical_sectors =      nor_flash -> lx_nor_flash_free_physical_sectors + obsolete_sectors;
            nor_flash -> lx_nor_flash_obsolete_physical_sectors =  nor_flash -> lx_nor_flash_obsolete_physical_sectors - obsolete_sectors;
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+
+            /* Check if the block is cached by obsolete count cache.  */
+            if (erase_block < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+            {
+
+                /* Yes, clear the obsolete count for this block.  */
+                nor_flash -> lx_nor_flash_extended_cache_obsolete_count[erase_block] =  0;
+            }
+#endif
        }
    }

@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_extended_cache_enable                 PORTABLE C      */ 
-/*                                                           6.1.9        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -84,6 +83,10 @@
 /*                                            added check for out of      */
 /*                                            bound memory access,        */
 /*                                            resulting in version 6.1.9  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added mapping bitmap cache, */
+/*                                            added obsolete count cache, */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_extended_cache_enable(LX_NOR_FLASH *nor_flash, VOID *memory, ULONG size)
@@ -93,6 +96,22 @@ UINT  _lx_nor_flash_extended_cache_enable(LX_NOR_FLASH *nor_flash, VOID *memory,
 UINT    i;
 ULONG   cache_size;
 ULONG   *cache_memory;
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+ULONG   mapping_bitmap_words;
+ULONG   mapping_bitmap_word;
+ULONG   logical_sector;
+ULONG   *mapping_bitmap_ptr;
+#endif
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+ULONG   obsolete_count_words;
+ULONG   obsolete_sectors;
+#endif
+#if defined(LX_NOR_ENABLE_MAPPING_BITMAP) || defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+ULONG   *block_word_ptr;
+UINT    j;
+UINT    status;
+ULONG   block_word;
+#endif


    /* Determine if memory was specified but with an invalid size (less than one NOR sector).  */
@@ -118,6 +137,157 @@ ULONG   *cache_memory;
    /* Setup cache memory pointer.  */
    cache_memory =  (ULONG *) memory;

+#if defined(LX_NOR_ENABLE_MAPPING_BITMAP) || defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+
+    /* Check if the NOR flash is opened.  */
+    if (nor_flash -> lx_nor_flash_state == LX_NOR_FLASH_OPENED)
+    {
+#if defined(LX_NOR_ENABLE_MAPPING_BITMAP)
+
+        /* Get the mapping bitmap cache size.  */
+        mapping_bitmap_words = (nor_flash -> lx_nor_flash_total_physical_sectors + 31) / 32;
+        
+        /* Check if the mapping bitmap cache fits in the suppiled cache memory.  */
+        if (cache_size < mapping_bitmap_words)
+        {
+
+            /* Update the cache size.  */
+            mapping_bitmap_words = cache_size;
+        }
+        
+        /* Setup the mapping bitmap cache.  */
+        nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap =  cache_memory;
+
+        /* Setup the mapping bitmap cache size.  */
+        nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap_max_logical_sector =  mapping_bitmap_words * 32;
+        
+        /* Clear the mapping bitmap cache.  */
+        for (i = 0; i < mapping_bitmap_words; i++)
+        {
+            cache_memory[i] =  0;
+        }
+
+        /* Update the cache memory pointer.  */
+        mapping_bitmap_ptr =  cache_memory;
+
+        /* Update the cache size.  */
+        cache_size =  cache_size - mapping_bitmap_words;
+
+        /* Update the cache memory pointer.  */
+        cache_memory =  cache_memory + mapping_bitmap_words;
+#endif
+        
+#if defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+
+        /* Get the obsolete count cache size.  */
+        obsolete_count_words = nor_flash -> lx_nor_flash_total_blocks * sizeof(LX_NOR_OBSOLETE_COUNT_CACHE_TYPE) / 4;
+        
+        /* Check if the obsolete count cache fits in the suppiled cache memory.  */
+        if (cache_size < obsolete_count_words)
+        {
+
+            /* Update the cache size.  */
+            obsolete_count_words = cache_size;
+        }
+        
+        /* Setup the obsolete count cache.  */
+        nor_flash -> lx_nor_flash_extended_cache_obsolete_count =  (LX_NOR_OBSOLETE_COUNT_CACHE_TYPE*)cache_memory;
+
+        /* Setup the obsolete count cache size.  */
+        nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block =  obsolete_count_words * 4 / sizeof(LX_NOR_OBSOLETE_COUNT_CACHE_TYPE);
+
+        /* Update the cache size.  */
+        cache_size =  cache_size - obsolete_count_words;
+
+        /* Update the cache memory pointer.  */
+        cache_memory =  cache_memory + obsolete_count_words;
+#endif
+
+        /* Loop through the blocks.  */
+        for (i = 0; i < nor_flash -> lx_nor_flash_total_blocks; i++)
+        {
+            /* Setup the block word pointer to the first word of the block.  */
+            block_word_ptr =  (nor_flash -> lx_nor_flash_base_address + (i * nor_flash -> lx_nor_flash_words_per_block));
+
+#if defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+
+            /* Initialize the obsolete count cache.  */
+            obsolete_sectors = 0;
+#endif
+
+            /* Now walk the list of logical-physical sector mapping.  */
+            for (j = 0; j < nor_flash ->lx_nor_flash_physical_sectors_per_block; j++)
+            {
+                
+                /* Read this word of the sector mapping list.  */
+#ifdef LX_DIRECT_READ
+    
+                /* Read the word directly.  */
+                block_word =  *(block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_mapping_offset + j);
+#else
+                status =  _lx_nor_flash_driver_read(nor_flash, (block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_mapping_offset + j), &block_word, 1);
+
+                /* Check for an error from flash driver. Drivers should never return an error..  */
+                if (status)
+                {
+    
+                    /* Call system error handler.  */
+                    _lx_nor_flash_system_error(nor_flash, status);
+
+                    /* Return an error.  */
+                    return(LX_ERROR);
+                }
+#endif
+                /* Determine if the entry hasn't been used.  */
+                if (block_word == LX_NOR_PHYSICAL_SECTOR_FREE)
+                {
+                    break;
+                }
+                
+                /* Is this entry valid?  */
+                if ((block_word & (LX_NOR_PHYSICAL_SECTOR_VALID | LX_NOR_PHYSICAL_SECTOR_MAPPING_NOT_VALID)) == LX_NOR_PHYSICAL_SECTOR_VALID)
+                {
+#if defined(LX_NOR_ENABLE_MAPPING_BITMAP)
+
+                    /* Yes, get the logical sector.  */
+                    logical_sector = block_word & LX_NOR_LOGICAL_SECTOR_MASK;
+                    
+                    /* Get the mapping bitmap word.  */
+                    mapping_bitmap_word = logical_sector >> 5;
+                    
+                    /* Check if the mapping bitmap word is within the cache.  */
+                    if (mapping_bitmap_word < mapping_bitmap_words)
+                    {
+
+                        /* Set the bit in the mapping bitmap.  */
+                        mapping_bitmap_ptr[mapping_bitmap_word] |=  (ULONG)(1 << (logical_sector & 31));
+                    }
+#endif
+                    
+                }
+                else
+                {
+#if defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+
+                    /* Increment the obsolete sector count.  */
+                    obsolete_sectors++;
+#endif
+                }
+            }
+#if defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+
+            /* Check if the block is cached by obsolete count cache.  */
+            if (i < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+            {
+
+                /* Yes, cache the obsolete sector count.  */
+                nor_flash -> lx_nor_flash_extended_cache_obsolete_count[i] = (LX_NOR_OBSOLETE_COUNT_CACHE_TYPE)obsolete_sectors;
+            }
+#endif
+        }
+    }
+#endif
+    
    /* Loop through the memory supplied and assign to cache entries.  */
    i =  0;
    while (cache_size >= LX_NOR_SECTOR_SIZE)
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_logical_sector_find                   PORTABLE C      */ 
-/*                                                           6.1.7        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -70,6 +69,7 @@
 /*  CALLS                                                                 */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_driver_read             Driver flash sector read      */ 
+/*    _lx_nor_flash_driver_write            Driver flash sector write     */ 
 /*    _lx_nor_flash_system_error            Internal system error handler */ 
 /*                                                                        */ 
 /*  CALLED BY                                                             */ 
@@ -85,6 +85,12 @@
 /*                                            resulting in version 6.1    */
 /*  06-02-2021     Bhupendra Naphade        Modified comment(s),          */
 /*                                            resulting in version 6.1.7  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added mapping bitmap cache, */
+/*                                            added obsolete count cache, */
+/*                                            optimized full obsoleted    */
+/*                                            block searching logic,      */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_logical_sector_find(LX_NOR_FLASH *nor_flash, ULONG logical_sector, ULONG superceded_check, ULONG **physical_sector_map_entry, ULONG **physical_sector_address)
@@ -102,7 +108,10 @@ ULONG                               i, j;
 ULONG                               search_start;
 LX_NOR_SECTOR_MAPPING_CACHE_ENTRY   *sector_mapping_cache_entry_ptr = LX_NULL;
 LX_NOR_SECTOR_MAPPING_CACHE_ENTRY   temp_sector_mapping_cache_entry;
-#ifndef LX_DIRECT_READ
+#ifndef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+ULONG                               valid_sector_found;
+#endif
+#if !defined(LX_DIRECT_READ)  || !defined(LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
 UINT                                status;
 #endif

@@ -119,6 +128,24 @@ UINT                                status;
        return(LX_SECTOR_NOT_FOUND);
    }
    
+#ifndef LX_NOR_DISABLE_EXTENDED_CACHE
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+
+    /* Determine if the logical sector is in the range of mapping bitmap cache.  */
+    if (logical_sector < nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap_max_logical_sector)
+    {
+
+        /* Determine if the logical sector is mapped.  */
+        if ((nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap[logical_sector >> 5] & (ULONG)(1 << (logical_sector & 31))) == 0)
+        {
+            
+            /* Not mapped, return not found.  */
+            return(LX_SECTOR_NOT_FOUND);
+        }
+    }
+#endif
+#endif
+
    /* Determine if the sector mapping cache is enabled.  */
    if (nor_flash -> lx_nor_flash_sector_mapping_cache_enabled)
    {
@@ -224,6 +251,36 @@ UINT                                status;
    while (total_blocks--) 
    {
        
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+        /* Determine if the obsolete sector count is available in the cache.  */
+        if (i < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+        {
+
+            /* Check if the block contains obsolete sectors only.  */
+            if ((ULONG)nor_flash -> lx_nor_flash_extended_cache_obsolete_count[i] == nor_flash -> lx_nor_flash_physical_sectors_per_block)
+            {
+
+                /* Move to the next block.  */
+                i++;
+                
+                /* Determine if we have wrapped.  */
+                if (i >= nor_flash -> lx_nor_flash_total_blocks)
+                {
+                    
+                    /* Yes, we have wrapped, set to block 0.  */
+                    i =  0;
+                }
+                
+                /* Start at the first sector in the next block.  */
+                j =  0;
+                
+                /* No point in looking further into this block, just continue the loop.  */
+                continue;            
+
+            }
+        }
+#endif
+
        /* Setup the block word pointer to the first word of the search block.  */
        block_word_ptr =  (nor_flash -> lx_nor_flash_base_address + (i * nor_flash -> lx_nor_flash_words_per_block));

@@ -249,51 +306,67 @@ UINT                                status;
            return(status);
        }
 #endif
+        
+        /* Is the value valid?  */
+        if (min_logical_sector != LX_ALL_ONES)
+        {
 #ifdef LX_DIRECT_READ
        
-        /* Read the word directly.  */
-        max_logical_sector =  *(block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET);
+            /* Read the word directly.  */
+            max_logical_sector =  *(block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET);
 #else
-        status =  _lx_nor_flash_driver_read(nor_flash, block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET, &max_logical_sector, 1);
+            status =  _lx_nor_flash_driver_read(nor_flash, block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET, &max_logical_sector, 1);

-        /* Check for an error from flash driver. Drivers should never return an error..  */
-        if (status)
-        {
-        
-            /* Call system error handler.  */
-            _lx_nor_flash_system_error(nor_flash, status);
-
-            /* Return the error.  */
-            return(status);
-        }
-#endif
-
-        /* Are the values valid?  */
-        if ((min_logical_sector != LX_ALL_ONES) && (max_logical_sector != LX_ALL_ONES))
-        {
-
-            /* Now let's check to see if the search sector is within this range.  */
-            if ((logical_sector < min_logical_sector) || (logical_sector > max_logical_sector))
+            /* Check for an error from flash driver. Drivers should never return an error..  */
+            if (status)
            {
            
-                /* Move to the next block.  */
-                i++;
+                /* Call system error handler.  */
+                _lx_nor_flash_system_error(nor_flash, status);

-                /* Determine if we have wrapped.  */
-                if (i >= nor_flash -> lx_nor_flash_total_blocks)
+                /* Return the error.  */
+                return(status);
+            }
+#endif
+
+            /* Is the value valid?  */
+            if (max_logical_sector != LX_ALL_ONES)
+            {
+
+                /* Now let's check to see if the search sector is within this range.  */
+                if ((logical_sector < min_logical_sector) || (logical_sector > max_logical_sector))
                {

-                    /* Yes, we have wrapped, set to block 0.  */
-                    i =  0;
+                    /* Move to the next block.  */
+                    i++;
+          
+                    /* Determine if we have wrapped.  */
+                    if (i >= nor_flash -> lx_nor_flash_total_blocks)
+                    {
+            
+                        /* Yes, we have wrapped, set to block 0.  */
+                        i =  0;
+                    }
+
+                    /* Start at the first sector in the next block.  */
+                    j =  0;
+                  
+                    /* No point in looking further into this block, just continue the loop.  */
+                    continue;            
                }
-
-                /* Start at the first sector in the next block.  */
-                j =  0;
-              
-                /* No point in looking further into this block, just continue the loop.  */
-                continue;            
            }
        }
+        else
+        {
+
+            /* Set the max logical sector to all ones.  */
+            max_logical_sector = LX_ALL_ONES;
+        }
+#ifndef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+        
+        /* Clear the valid sector found flag.  */
+        valid_sector_found = LX_FALSE;
+#endif

        /* Setup the total number of sectors.  */
        total_sectors =  nor_flash -> lx_nor_flash_physical_sectors_per_block;
@@ -440,6 +513,11 @@ UINT                                status;
                        return(LX_SUCCESS);                     
                    }
                }
+#ifndef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+
+                /* Set the valid sector found flag.  */
+                valid_sector_found = LX_TRUE;
+#endif
            }

            /* Move to the next list entry.  */
@@ -453,6 +531,29 @@ UINT                                status;
                j =  0;
            }
        }
+#ifndef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+        /* Check if the block contains no valid sectors.  */
+        if ((valid_sector_found == LX_FALSE) && (max_logical_sector != LX_ALL_ONES))
+        {
+
+                /* Clear max logical sector to indicate sectors are all obsoleted.  */
+                max_logical_sector = 0;
+
+                /* Write the max logical sector to the block header.  */
+                status =  _lx_nor_flash_driver_write(nor_flash, block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET, &max_logical_sector, 1);
+                
+                /* Check for an error from flash driver. Drivers should never return an error..  */
+                if (status)
+                {
+                    
+                    /* Call system error handler.  */
+                    _lx_nor_flash_system_error(nor_flash, status);
+                    
+                    /* Return the error.  */
+                    return(status);
+                }
+        }
+#endif

        /* Determine if there are any more mapped sectors.  */
        if (mapped_sectors == 0)
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_next_block_to_erase_find              PORTABLE C      */ 
-/*                                                           6.1.7        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -81,6 +80,12 @@
 /*                                            resulting in version 6.1    */
 /*  06-02-2021     Bhupendra Naphade        Modified comment(s),          */
 /*                                            resulting in version 6.1.7  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added mapping bitmap cache, */
+/*                                            added obsolete count cache, */
+/*                                            optimized full obsoleted    */
+/*                                            block searching logic,      */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_next_block_to_erase_find(LX_NOR_FLASH *nor_flash, ULONG *return_erase_block, ULONG *return_erase_count, ULONG *return_mapped_sectors, ULONG *return_obsolete_sectors)
@@ -97,16 +102,23 @@ ULONG   min_block_erase = 0;
 ULONG   min_block_erase_count;
 ULONG   min_block_obsolete_count = 0;
 ULONG   min_block_mapped_count = 0;
+ULONG   min_block_mapped_count_available = LX_FALSE;
 ULONG   max_obsolete_sectors;
 ULONG   max_obsolete_block = 0;
 ULONG   max_obsolete_erase_count = 0;
 ULONG   max_obsolete_mapped_count = 0;
+ULONG   max_obsolete_mapped_count_available = LX_FALSE;
 ULONG   min_system_block_erase_count;
+ULONG   system_min_erased_blocks;
 ULONG   max_system_block_erase_count;
 ULONG   erase_count_threshold;
+ULONG   min_logical_sector;
+ULONG   max_logical_sector;
 #ifndef LX_DIRECT_READ
 UINT    status;
 #endif
+UINT    obsolete_sectors_available;
+UINT    mapped_sectors_available;


    /* Setup the block word pointer to the first word of the search block.  */
@@ -117,6 +129,7 @@ UINT    status;
    
    /* Initialize the system minimum and maximum erase counts.  */
    min_system_block_erase_count =  LX_ALL_ONES;
+    system_min_erased_blocks = 0;
    max_system_block_erase_count =  0;
        
    /* Initialize the maximum obsolete sector count.  */
@@ -161,16 +174,263 @@ UINT    status;
 #endif

        /* Update the system minimum and maximum erase counts.  */
+        if (erase_count == min_system_block_erase_count)
+        {
+            system_min_erased_blocks ++;
+        }
        if (erase_count < min_system_block_erase_count)
+        {
            min_system_block_erase_count =  erase_count;
+            system_min_erased_blocks = 1;
+        }
        if (erase_count > max_system_block_erase_count)
            max_system_block_erase_count =  erase_count;

+        /* Initialize the obsolete and mapped sector count available flags.  */
+        obsolete_sectors_available =  LX_FALSE;
+        mapped_sectors_available =  LX_FALSE;
+        
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+
+        /* Determine if the obsolete sector count is available in the cache.  */
+        if (i < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+        {
+
+            /* Yes, the obsolete sector count is available.  */
+            obsolete_sectors_available =  LX_TRUE;
+
+            /* Pickup the obsolete sector count from the cache.  */
+            obsolete_sectors = (ULONG)nor_flash -> lx_nor_flash_extended_cache_obsolete_count[i];
+        }
+        else
+        {
+#endif
+        /* Read the minimum and maximum logical sector values in this block.  */
+#ifdef LX_DIRECT_READ
+        
+        /* Read the word directly.  */
+        min_logical_sector =  *(block_word_ptr + LX_NOR_FLASH_MIN_LOGICAL_SECTOR_OFFSET);
+#else
+        status =  _lx_nor_flash_driver_read(nor_flash, block_word_ptr + LX_NOR_FLASH_MIN_LOGICAL_SECTOR_OFFSET, &min_logical_sector, 1);
+
+        /* Check for an error from flash driver. Drivers should never return an error..  */
+        if (status)
+        {
+        
+            /* Call system error handler.  */
+            _lx_nor_flash_system_error(nor_flash, status);
+
+            /* Return the error.  */
+            return(status);
+        }
+#endif
+        
+        /* Determine if the minimum logical sector is valid.  */
+        if (min_logical_sector != LX_ALL_ONES)
+        {
+#ifdef LX_DIRECT_READ
+        
+            /* Read the word directly.  */
+            max_logical_sector =  *(block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET);
+#else
+            status =  _lx_nor_flash_driver_read(nor_flash, block_word_ptr + LX_NOR_FLASH_MAX_LOGICAL_SECTOR_OFFSET, &max_logical_sector, 1);
+
+            /* Check for an error from flash driver. Drivers should never return an error..  */
+            if (status)
+            {
+            
+                /* Call system error handler.  */
+                _lx_nor_flash_system_error(nor_flash, status);
+
+                /* Return the error.  */
+                return(status);
+            }
+#endif
+
+            /* Are the values valid?  */
+            /* Now let's check to see if all the sector are obsoleted.  */
+            if ((max_logical_sector != LX_ALL_ONES) && (max_logical_sector < min_logical_sector))
+            {
+                
+                obsolete_sectors_available =  LX_TRUE;
+                obsolete_sectors =  nor_flash -> lx_nor_flash_physical_sectors_per_block;
+            }
+        }
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+        }
+#endif
+
+        /* Determine if the mapped sector count is available.  */
+        if (obsolete_sectors_available == LX_FALSE)
+        {
+
+            /* Compute the number of obsolete and mapped sectors for this block.  */
+
+            /* Initialize the obsolete and mapped sector counts.  */
+            obsolete_sectors =  0;
+            mapped_sectors =    0;
+
+            /* Set the mapped sector count and obsolete sector count available flags.  */
+            mapped_sectors_available =  LX_TRUE;
+            obsolete_sectors_available =  LX_TRUE;
+
+            /* Setup a pointer to the mapped list.  */
+            list_word_ptr =  block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_mapping_offset;
+
+            /* Loop through the mapped list for this block.  */
+            for (j = 0; j < nor_flash -> lx_nor_flash_physical_sectors_per_block; j++)
+            {
+            
+                /* Read the current mapping entry.  */
+#ifdef LX_DIRECT_READ
+            
+                /* Read the word directly.  */
+                list_word =  *(list_word_ptr);
+#else
+                status =  _lx_nor_flash_driver_read(nor_flash, list_word_ptr, &list_word, 1);
+
+                /* Check for an error from flash driver. Drivers should never return an error..  */
+                if (status)
+                {
+            
+                    /* Call system error handler.  */
+                    _lx_nor_flash_system_error(nor_flash, status);
+
+                    /* Return the error.  */
+                    return(status);
+                }
+#endif
+                
+                /* Determine if the entry hasn't been used.  */
+                if (list_word == LX_NOR_PHYSICAL_SECTOR_FREE)
+                {
+                    
+                    /* Since allocations are done sequentially in the block, we know nothing
+                       else exists after this point.  */
+                    break;
+                }
+                
+                /* Is this entry obsolete?  */
+                if ((list_word & LX_NOR_PHYSICAL_SECTOR_VALID) == 0)
+                {
+                    
+                    /* Increment the number of obsolete sectors.  */
+                    obsolete_sectors++;    
+                }
+                else
+                {
+                    
+                    /* Increment the number of mapped sectors.  */
+                    mapped_sectors++;
+                }
+
+                /* Move the list pointer ahead.  */
+                list_word_ptr++;
+            }
+        }
+        
+        /* Determine if this block contains full obsoleted sectors and the erase count is minimum.  */
+        if ((obsolete_sectors == nor_flash -> lx_nor_flash_physical_sectors_per_block) && 
+            (erase_count == nor_flash -> lx_nor_flash_minimum_erase_count) &&
+            (nor_flash -> lx_nor_flash_minimum_erased_blocks > 0))
+        {
+
+            /* Yes, we have a full obsoleted block with minimum erase count.  */
+            *return_erase_block =       i;
+            *return_erase_count =       erase_count;
+            *return_obsolete_sectors =  obsolete_sectors;
+            *return_mapped_sectors =    mapped_sectors;
+
+            break;
+        }
+                
+
+        /* Determine if we have a block with a new maximum number of obsolete sectors.  */
+        if ((obsolete_sectors > max_obsolete_sectors) && (erase_count <= erase_count_threshold))
+        {
+        
+            /* Update the new maximum obsolete sectors and related information.  */
+            max_obsolete_sectors =      obsolete_sectors;
+            max_obsolete_block =        i;
+            max_obsolete_erase_count =  erase_count;
+            max_obsolete_mapped_count = mapped_sectors;
+            max_obsolete_mapped_count_available = mapped_sectors_available;
+            
+        }
+        else if ((max_obsolete_sectors) && (obsolete_sectors == max_obsolete_sectors) && (erase_count <= erase_count_threshold))
+        {
+        
+            /* Another block has the same number of obsolete sectors.  Does this new block have a smaller erase
+               count?  */
+            if (erase_count < max_obsolete_erase_count)
+            {
+            
+                /* Yes, erase the block with the smaller erase count.  */
+                max_obsolete_sectors =      obsolete_sectors;
+                max_obsolete_block =        i;
+                max_obsolete_erase_count =  erase_count;
+                max_obsolete_mapped_count = mapped_sectors;
+                max_obsolete_mapped_count_available = mapped_sectors_available;
+            }
+        }
+        
+        /* Determine if we have a new minimum erase count.  */
+        if (erase_count < min_block_erase_count)
+        {
+            
+            /* Update the new minimum erase count and related information.  */
+            min_block_erase_count =     erase_count;
+            min_block_erase =           i;
+            min_block_obsolete_count =  obsolete_sectors;
+            min_block_mapped_count =    mapped_sectors;
+            min_block_mapped_count_available = mapped_sectors_available;
+        }
+          
+        /* Move to the next block.  */
+        block_word_ptr =  block_word_ptr + nor_flash -> lx_nor_flash_words_per_block;
+    }
+
+    /* Determine if we found a block with full obsoleted sector and the erase count is minimum.  */
+    if (i == nor_flash -> lx_nor_flash_total_blocks)
+    {
+
+        /* Determine if we can erase the block with the most obsolete sectors.  */
+        if (max_obsolete_sectors)
+        {
+        
+            /* Erase the block with the most obsolete sectors.  */
+            *return_erase_block =       max_obsolete_block;
+            *return_erase_count =       max_obsolete_erase_count;
+            *return_obsolete_sectors =  max_obsolete_sectors;
+            *return_mapped_sectors =    max_obsolete_mapped_count;
+            mapped_sectors_available =  max_obsolete_mapped_count_available;
+        }
+        else
+        {
+          
+            /* Otherwise, choose the block with the smallest erase count.  */
+            *return_erase_block =       min_block_erase;
+            *return_erase_count =       min_block_erase_count;
+            *return_obsolete_sectors =  min_block_obsolete_count;
+            *return_mapped_sectors =    min_block_mapped_count;
+            mapped_sectors_available =  min_block_mapped_count_available;
+        }
+
+        /* Update the overall minimum and maximum erase count.  */
+        nor_flash -> lx_nor_flash_minimum_erase_count =  min_system_block_erase_count;
+        nor_flash -> lx_nor_flash_minimum_erased_blocks =  system_min_erased_blocks;
+        nor_flash -> lx_nor_flash_maximum_erase_count =  max_system_block_erase_count;
+    }
+
+    /* Determine if the mapped sector count is available.  */
+    if (mapped_sectors_available == LX_FALSE)
+    {
+
        /* Compute the number of obsolete and mapped sectors for this block.  */
-        obsolete_sectors =  0;
-        mapped_sectors =    0;
+        mapped_sectors =  0;

        /* Setup a pointer to the mapped list.  */
+        block_word_ptr =  nor_flash -> lx_nor_flash_base_address + *return_erase_block * nor_flash -> lx_nor_flash_words_per_block;
        list_word_ptr =  block_word_ptr + nor_flash -> lx_nor_flash_block_physical_sector_mapping_offset;
        
        /* Loop through the mapped list for this block.  */
@@ -202,18 +462,12 @@ UINT    status;
            {
                
                /* Since allocations are done sequentially in the block, we know nothing
-                   else exists after this point.  */
+                       else exists after this point.  */
                break;
            }
            
-            /* Is this entry obsolete?  */
-            if ((list_word & LX_NOR_PHYSICAL_SECTOR_VALID) == 0)
-            {
-                
-                /* Increment the number of obsolete sectors.  */
-                obsolete_sectors++;    
-            }
-            else
+            /* Is this entry mapped?  */
+            if ((list_word & LX_NOR_PHYSICAL_SECTOR_VALID) != 0)
            {
                
                /* Increment the number of mapped sectors.  */
@@ -224,71 +478,10 @@ UINT    status;
            list_word_ptr++;
        }
        
-        /* Determine if we have a block with a new maximum number of obsolete sectors.  */
-        if ((obsolete_sectors > max_obsolete_sectors) && (erase_count <= erase_count_threshold))
-        {
+        /* Return the mapped sector count.  */
+        *return_mapped_sectors = mapped_sectors;
        
-            /* Update the new maximum obsolete sectors and related information.  */
-            max_obsolete_sectors =      obsolete_sectors;
-            max_obsolete_block =        i;
-            max_obsolete_erase_count =  erase_count;
-            max_obsolete_mapped_count = mapped_sectors;
-        }
-        else if ((max_obsolete_sectors) && (obsolete_sectors == max_obsolete_sectors) && (erase_count <= erase_count_threshold))
-        {
-        
-            /* Another block has the same number of obsolete sectors.  Does this new block have a smaller erase
-               count?  */
-            if (erase_count < max_obsolete_erase_count)
-            {
-            
-                /* Yes, erase the block with the smaller erase count.  */
-                max_obsolete_sectors =      obsolete_sectors;
-                max_obsolete_block =        i;
-                max_obsolete_erase_count =  erase_count;
-                max_obsolete_mapped_count = mapped_sectors;
-            }
-        }
-        
-        /* Determine if we have a new minimum erase count.  */
-        if (erase_count < min_block_erase_count)
-        {
-            
-            /* Update the new minimum erase count and related information.  */
-            min_block_erase_count =     erase_count;
-            min_block_erase =           i;
-            min_block_obsolete_count =  obsolete_sectors;
-            min_block_mapped_count =    mapped_sectors;
-        }
-          
-        /* Move to the next block.  */
-        block_word_ptr =  block_word_ptr + nor_flash -> lx_nor_flash_words_per_block;
    }
-
-    /* Determine if we can erase the block with the most obsolete sectors.  */
-    if (max_obsolete_sectors)
-    {
-    
-        /* Erase the block with the most obsolete sectors.  */
-        *return_erase_block =       max_obsolete_block;
-        *return_erase_count =       max_obsolete_erase_count;
-        *return_obsolete_sectors =  max_obsolete_sectors;
-        *return_mapped_sectors =    max_obsolete_mapped_count;
-    }
-    else
-    {
-      
-        /* Otherwise, choose the block with the smallest erase count.  */
-        *return_erase_block =       min_block_erase;
-        *return_erase_count =       min_block_erase_count;
-        *return_obsolete_sectors =  min_block_obsolete_count;
-        *return_mapped_sectors =    min_block_mapped_count;
-    }
-
-    /* Update the overall minimum and maximum erase count.  */
-    nor_flash -> lx_nor_flash_minimum_erase_count =  min_system_block_erase_count;
-    nor_flash -> lx_nor_flash_maximum_erase_count =  max_system_block_erase_count;
-    
    /* Return success.  */
    return(LX_SUCCESS);
 }
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_open                                  PORTABLE C      */ 
-/*                                                           6.2.1       */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -94,7 +93,15 @@
 /*                                            resulting in version 6.1.7  */
 /*  03-08-2023     Xiuwen Cai               Modified comment(s),          */
 /*                                            added new driver interface, */
-/*                                            resulting in version 6.2.1 */
+/*                                            resulting in version 6.2.1  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added count for minimum     */
+/*                                            erased blocks, added        */
+/*                                            obsolete count cache,       */
+/*                                            avoided clearing user       */
+/*                                            extension in flash control  */
+/*                                            block,                      */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_open(LX_NOR_FLASH  *nor_flash, CHAR *name, UINT (*nor_driver_initialize)(LX_NOR_FLASH *))
@@ -112,7 +119,7 @@ ULONG           free_sectors;
 ULONG           used_sectors;
 ULONG           *new_map_entry;
 ULONG           *new_sector_address;
-ULONG           erased_count, min_erased_count, max_erased_count, temp_erased_count;
+ULONG           erased_count, min_erased_count, max_erased_count, temp_erased_count, min_erased_blocks;
 ULONG           j, k, l;    
 UINT            status;
 #ifdef LX_FREE_SECTOR_DATA_VERIFY
@@ -124,8 +131,8 @@ LX_INTERRUPT_SAVE_AREA

    LX_PARAMETER_NOT_USED(name);

-    /* Clear the NOR flash control block.  */
-    LX_MEMSET(nor_flash, 0, sizeof(LX_NOR_FLASH));
+    /* Clear the NOR flash control block. User extension is not cleared.  */
+    LX_MEMSET(nor_flash, 0, (ULONG)((UCHAR*)&(nor_flash -> lx_nor_flash_open_previous) - (UCHAR*)nor_flash) + sizeof(nor_flash -> lx_nor_flash_open_previous));
   
    /* Call the flash driver's initialization function.  */
    (nor_driver_initialize)(nor_flash);
@@ -213,6 +220,7 @@ LX_INTERRUPT_SAVE_AREA
    
    /* Setup default values for the max/min erased counts.  */
    min_erased_count =  LX_ALL_ONES;
+    min_erased_blocks = 0;
    max_erased_count =  0;
    
    /* Setup the block word pointer to the first word of the first block, which is effectively the 
@@ -255,12 +263,23 @@ LX_INTERRUPT_SAVE_AREA
            /* No, valid block.  Isolate the erased count.  */
            erased_count =  (block_word & LX_BLOCK_ERASE_COUNT_MASK);

+            /* Is the erased count the minimum?  */
+            if (erased_count == min_erased_count)
+            {
+
+                /* Yes, increment the minimum erased block count.  */
+                min_erased_blocks++;
+            }
+
            /* Is this the new minimum?  */
            if (erased_count < min_erased_count)
            {
                
                /* Yes, remember the new minimum.  */
                min_erased_count =  erased_count;
+
+                /* Reset the minimum erased block count.  */
+                min_erased_blocks =  1;
            }
            
            /* Is this the new maximum?  */
@@ -327,6 +346,7 @@ LX_INTERRUPT_SAVE_AREA

            /* Update the overall minimum and maximum erase count.  */
            nor_flash -> lx_nor_flash_minimum_erase_count =  1;
+            nor_flash -> lx_nor_flash_minimum_erased_blocks =  nor_flash -> lx_nor_flash_total_blocks;
            nor_flash -> lx_nor_flash_maximum_erase_count =  1;

            /* Update the number of free physical sectors.  */
@@ -806,6 +826,7 @@ LX_INTERRUPT_SAVE_AREA

        /* Update the overall minimum and maximum erase count.  */
        nor_flash -> lx_nor_flash_minimum_erase_count =  min_erased_count;
+        nor_flash -> lx_nor_flash_minimum_erased_blocks =  min_erased_blocks;
        nor_flash -> lx_nor_flash_maximum_erase_count =  max_erased_count;

        /* Determine if we need to update the free sector search pointer.  */
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_sector_read                           PORTABLE C      */ 
-/*                                                           6.1.7        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -84,6 +83,9 @@
 /*                                            resulting in version 6.1    */
 /*  06-02-2021     Bhupendra Naphade        Modified comment(s),          */
 /*                                            resulting in version 6.1.7  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added mapping bitmap cache, */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_sector_read(LX_NOR_FLASH *nor_flash, ULONG logical_sector, VOID *buffer)
@@ -179,6 +181,18 @@ ULONG   *sector_address;
                /* Return status.  */
                return(LX_ERROR);
            }
+#ifndef LX_NOR_DISABLE_EXTENDED_CACHE
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+
+            /* Determine if the logical sector is within the mapping bitmap.  */
+            if (logical_sector < nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap_max_logical_sector)
+            {
+
+                /* Set the bit in the mapping bitmap.  */
+                nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap[logical_sector >> 5] |= (ULONG)(1 << (logical_sector & 31));
+            }
+#endif
+#endif

            /* Increment the number of mapped physical sectors.  */
            nor_flash -> lx_nor_flash_mapped_physical_sectors++;
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_sector_release                        PORTABLE C      */ 
-/*                                                           6.1.7        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -84,6 +83,10 @@
 /*                                            resulting in version 6.1    */
 /*  06-02-2021     Bhupendra Naphade        Modified comment(s),          */
 /*                                            resulting in version 6.1.7  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added mapping bitmap cache, */
+/*                                            added obsolete count cache, */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_sector_release(LX_NOR_FLASH *nor_flash, ULONG logical_sector)
@@ -94,6 +97,9 @@ ULONG   *mapping_address;
 ULONG   mapping_entry;
 ULONG   *sector_address;
 ULONG   i;
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+ULONG   block;
+#endif


 #ifdef LX_THREAD_SAFE_ENABLE
@@ -164,9 +170,36 @@ ULONG   i;
            return(LX_ERROR);
        }

+#ifndef LX_NOR_DISABLE_EXTENDED_CACHE
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+
+        /* Determine if the logical sector is within the mapping bitmap.  */
+        if (logical_sector < nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap_max_logical_sector)
+        {
+
+            /* Set the bit in the mapping bitmap.  */
+            nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap[logical_sector >> 5] &= (ULONG)~(1 << (logical_sector & 31));
+        }
+#endif
+#endif
+
        /* Increment the number of obsolete physical sectors.  */
        nor_flash -> lx_nor_flash_obsolete_physical_sectors++;

+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+
+        /* Get the block number from mapping address.  */
+        block = (ULONG)(mapping_address - nor_flash -> lx_nor_flash_base_address) / nor_flash -> lx_nor_flash_words_per_block;
+        
+        /* Determine if this block is within the range of the obsolete count cache.  */
+        if (block < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+        {
+
+            /* Increment the obsolete count for this block.  */
+            nor_flash -> lx_nor_flash_extended_cache_obsolete_count[block] ++;
+        }
+#endif
+
        /* Decrement the number of mapped physical sectors.  */
        nor_flash -> lx_nor_flash_mapped_physical_sectors--;
            
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -40,7 +39,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nor_flash_sector_write                          PORTABLE C      */ 
-/*                                                           6.1.7        */
+/*                                                           6.3.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -87,6 +86,10 @@
 /*                                            resulting in version 6.1    */
 /*  06-02-2021     Bhupendra Naphade        Modified comment(s),          */
 /*                                            resulting in version 6.1.7  */
+/*  10-31-2023     Xiuwen Cai               Modified comment(s),          */
+/*                                            added mapping bitmap cache, */
+/*                                            added obsolete count cache, */
+/*                                            resulting in version 6.3.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nor_flash_sector_write(LX_NOR_FLASH *nor_flash, ULONG logical_sector, VOID *buffer)
@@ -101,7 +104,9 @@ ULONG                           new_mapping_entry;
 ULONG                           i;
 LX_NOR_SECTOR_MAPPING_CACHE_ENTRY  *sector_mapping_cache_entry_ptr;
 UINT                            status;
-
+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+ULONG                           block;
+#endif

 #ifdef LX_THREAD_SAFE_ENABLE

@@ -269,6 +274,18 @@ UINT                            status;
            /* Return status.  */
            return(LX_ERROR);
        }
+#ifndef LX_NOR_DISABLE_EXTENDED_CACHE
+#ifdef LX_NOR_ENABLE_MAPPING_BITMAP
+
+        /* Determine if the logical sector is within the mapping bitmap.  */
+        if (logical_sector < nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap_max_logical_sector)
+        {
+
+            /* Set the bit in the mapping bitmap.  */
+            nor_flash -> lx_nor_flash_extended_cache_mapping_bitmap[logical_sector >> 5] |= (ULONG)(1 << (logical_sector & 31));
+        }
+#endif
+#endif

        /* Increment the number of mapped physical sectors.  */
        nor_flash -> lx_nor_flash_mapped_physical_sectors++;
@@ -303,6 +320,20 @@ UINT                            status;
            /* Increment the number of obsolete physical sectors.  */
            nor_flash -> lx_nor_flash_obsolete_physical_sectors++;

+#ifdef LX_NOR_ENABLE_OBSOLETE_COUNT_CACHE
+
+            /* Get the block number from mapping address.  */
+            block = (ULONG)(old_mapping_address - nor_flash -> lx_nor_flash_base_address) / nor_flash -> lx_nor_flash_words_per_block;
+
+            /* Determine if this block is within the range of the obsolete count cache.  */
+            if (block < nor_flash -> lx_nor_flash_extended_cache_obsolete_count_max_block)
+            {
+
+                /* Increment the obsolete count for this block.  */
+                nor_flash -> lx_nor_flash_extended_cache_obsolete_count[block] ++;
+            }
+#endif
+
            /* Decrement the number of mapped physical sectors.  */
            nor_flash -> lx_nor_flash_mapped_physical_sectors--;
            
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -1,13 +1,12 @@
-/**************************************************************************/
-/*                                                                        */
-/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
-/*                                                                        */
-/*       This software is licensed under the Microsoft Software License   */
-/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
-/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
-/*       and in the root directory of this software.                      */
-/*                                                                        */
-/**************************************************************************/
+/***************************************************************************
+ * Copyright (c) 2024 Microsoft Corporation 
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ * 
+ * SPDX-License-Identifier: MIT
+ **************************************************************************/


 /**************************************************************************/
@@ -0,0 +1,197 @@
+                                            LevelX
+                                            
+For version 6 and higher, please refer to the release notes on GitHub at https://github.com/eclipse-threadx/levelx/releases.
+Below is the revision history for 5.x.
+
+
+08/15/2019  LevelX generic code version 5.6. This release includes the
+            following major features:
+
+        Files are modified to fix compiler warnings:
+            demo_filex_nand_flash.c
+            demo_filex_nor_flash.c
+            lx_nand_flash_256byte_ecc_check.c
+            lx_nand_flash_256byte_ecc_compute.c
+
+
+10/10/2018  LevelX generic code version 5.5. This release includes the following 
+            modifications:
+
+            lx_api.h                                        Removed compiler warnings, added extended NOR cache 
+                                                            support, new APIs, and new constants.
+            lx_nand_flash_256byte_ecc_check.c               Removed compiler warnings.
+            lx_nand_flash_256byte_ecc_compute.c             Removed compiler warnings.
+            lx_nand_flash_block_obsoleted_check.c           Added logic to mark the beginning of block erase.
+            lx_nand_flash_block_reclaim.c                   Removed compiler warnings, and added logic to mark 
+                                                            the beginning of block erase.
+            lx_nand_flash_logical_sector_find.c             Removed compiler warnings, and added logic to use 
+                                                            and maintain the last found page.
+            lx_nand_flash_next_block_to_erase_find.c        Removed compiler warnings.
+            lx_nand_flash_open.c                            Added logic to detect start of a block erase that 
+                                                            was interrupted, removed system error call for more
+                                                            than one page being obsoleted since this can happen 
+                                                            normally, removed compiler warnings, and added logic 
+                                                            to initialize the last found page.
+            lx_nand_flash_partial_defragment.c              Added file in this release.
+            lx_nand_flash_sector_release.c                  Removed compiler warnings.
+            lx_nand_flash_sector_write.c                    Removed compiler warnings.
+            lx_nor_flash_block_reclaim.c                    Removed direct driver access for erases/reads/writes, 
+                                                            removed compiler warnings, and added logic to mark 
+                                                            the beginning of block erase.
+            lx_nor_flash_driver_block_erase.c               Added file in this release.
+            lx_nor_flash_driver_read.c                      Added file in this release.
+            lx_nor_flash_driver_write.c                     Added file in this release.
+            lx_nor_flash_extended_cache_enable.c            Added file in this release.
+            lx_nor_flash_logical_sector_find.c              Removed direct driver access for reads, removed compiler 
+                                                            warnings, and added logic to use and maintain the last 
+                                                            found sector/block.
+            lx_nor_flash_next_block_to_erase_find.c         Removed compiler warnings, and removed direct driver 
+                                                            access for reads.
+            lx_nor_flash_open.c                             Removed direct driver access for erases/reads/writes, 
+                                                            added logic to detect start of a block erase that was 
+                                                            interrupted, removed system error call for more than 
+                                                            one page being obsoleted since this can happen normally, 
+                                                            removed compiler warnings, and added logic to initialize 
+                                                            the last found sector/block.
+            lx_nor_flash_partial_defragment.c               Added file in this release.
+            lx_nor_flash_physical_sector_allocate.c         Removed direct driver access for reads/writes.
+            lx_nor_flash_sector_read.c                      Removed direct driver access for reads/writes.
+            lx_nor_flash_sector_release.c                   Removed direct driver access for reads/writes.
+            lx_nor_flash_sector_write.c                     Removed direct driver access for reads/writes.
+            lx_nor_flash_simulator.c                        Removed compiler warnings.
+            lx*.c                                           Changed comments and copyright header, and added 
+                                                            conditional around disabling ThreadX error checking.
+            lx*.h                                           Changed comments and copyright header.
+
+05/01/2018  LevelX generic code version 5.4. This release includes the following 
+            modifications:
+
+            lx_api.h                                        Added NOR flash RAM buffer, added bit constant
+                                                            for both NOR and NAND flash to indicate when 
+                                                            mapping write is valid, added diagnostic counter
+                                                            for tracking when incomplete mapping is detected 
+                                                            on open, add added new error code when driver 
+                                                            does not supply a sector/page RAM buffer.
+            fx_nand_flash_simulated_driver.c                Added error checking, and corrected sector 
+                                                            read/write processing.
+            fx_nor_flash_simulator_driver.c                 Added error checking.
+            lx_nand_flash_block_reclaim.c                   Added clearing of additional bit to indicate when 
+                                                            mapping is valid, and corrected logic that could 
+                                                            cause a newly mapped sector to be erased.
+            lx_nand_flash_logical_sector_find.c             Added logic to make sure the sector mapping is valid.
+            lx_nand_flash_next_block_to_erase_find.c        Added logic to improve search for free sectors.
+            lx_nand_flash_open.c                            Added logic to detect and handle a mapping entry 
+                                                            interrupted before completion, and added logic to 
+                                                            ensure there is a page buffer supplied by the 
+                                                            driver.
+            lx_nand_flash_sector_release.c                  Added reclaim logic to help increase free sectors.
+            lx_nand_flash_sector_write.c                    Added clearing of additional bit to indicate when 
+                                                            mapping is valid.
+            lx_nor_flash_block_reclaim.c                    Added clearing of additional bit to indicate when 
+                                                            mapping is valid, added logic to read NOR sector 
+                                                            into RAM buffer if direct NOR access is not possible, 
+                                                            and corrected logic that could cause a newly mapped 
+                                                            sector to be erased.
+            lx_nor_flash_logical_sector_find.c              Added logic to make sure the sector mapping is valid.
+            lx_nor_flash_next_block_to_erase_find.c         Added logic to improve search for free sectors.
+            lx_nor_flash_open.c                             Added logic to detect and handle a mapping entry 
+                                                            interrupted before completion, and added logic to 
+                                                            ensure there is a sector buffer supplied by the 
+                                                            driver if LX_DIRECT_READ is not specified.          
+            lx_nor_flash_sector_release.c                   Added reclaim logic to help increase free sectors.
+            lx_nor_flash_sector_write.c                     Added clearing of additional bit to indicate when 
+                                                            mapping is valid, and removed optimization to ensure
+                                                            atomic sector write.
+            lx_nor_flash_simulator.c                        Added logic to supply RAM buffer for reading
+                                                            sector when LX_DIRECT_READ is not specified, 
+                                                            and removed write attempt to already written
+                                                            sector, since this is no longer required.
+            fx*.c                                           Changed comments and copyright header.
+            lx*.c                                           Changed comments and copyright header.
+            lx*.h                                           Changed comments and copyright header.
+
+11/01/2017  LevelX generic code version 5.3. This release includes the following 
+            modifications:
+
+            lx_nand_flash_block_full_update.c               Added check to make sure the block is 
+                                                            actually full.
+            lx_nand_flash_block_reclaim.c                   Added support for direct logical sector 
+                                                            cache.
+            lx_nand_flash_logical_sector_find.c             Added adjustment of mapped sectors when 
+                                                            examining the mapped list, added support 
+                                                            for direct logical sector cache.
+            lx_nand_flash_open.c                            Added support for direct logical sector cache, 
+                                                            and updated diagnostics.
+            lx_nand_flash_physical_page_allocate.c          Added adjustment of the search pointer for 
+                                                            next allocate request.
+            lx_nand_flash_sector_mapping_cache_invalidate.c Added support for direct logical sector cache.
+            lx_nand_flash_sector_release.c                  Added logic to update the page 0 mapping list 
+                                                            if present.
+            lx_nand_flash_sector_write.c                    Added logic to update the page 0 mapping list 
+                                                            if present, and added check to make sure the 
+                                                            new mapping wasn't moved, added direct logical 
+                                                            sector cache.
+            fx*.c                                           Changed comments and copyright header.
+            lx*.c                                           Changed comments and copyright header.
+            lx*.h                                           Changed comments and copyright header.
+
+03/01/2017  LevelX generic code version 5.2. This release includes the following 
+            modifications:
+
+            lx_nand_flash_block_full_update.c               Reduced the number of words accessed in 
+                                                            page 0, added driver interface layer,  
+                                                            and modified the extra bytes usage in 
+                                                            page 0 to support block valid-full-empty.
+            lx_nand_flash_block_obsoleted_check.c           Added file in this release.
+            lx_nand_flash_block_reclaim.c                   Added logic to update page 0 on a full 
+                                                            block update, added driver interface layer, 
+                                                            and added additional diagnostic information.
+            lx_nand_flash_driver_block_erase.c              Added file in this release.
+            lx_nand_flash_driver_block_erased_verify.c      Added file in this release.
+            lx_nand_flash_driver_block_status_get.c         Added file in this release.
+            lx_nand_flash_driver_block_status_set.c         Added file in this release.
+            lx_nand_flash_driver_extra_bytes_get.c          Added file in this release.
+            lx_nand_flash_driver_extra_bytes_set.c          Added file in this release.
+            lx_nand_flash_driver_page_erased_verify.c       Added file in this release.
+            lx_nand_flash_driver_read.c                     Added file in this release.
+            lx_nand_flash_driver_write.c                    Added file in this release.
+            lx_nand_flash_extended_cache_enable.c           Added file in this release.
+            lx_nand_flash_logical_sector_find.c             Reduced the number of words accessed in 
+                                                            page 0, corrected check for valid sector 
+                                                            mapping list, added max mapped sector logic, 
+                                                            added driver interface layer, and added logic 
+                                                            to use and maintain the last found sector block.
+            lx_nand_flash_next_block_to_erase_find.c        Reduced the number of words accessed in page 0, 
+                                                            and added driver interface layer.
+            lx_nand_flash_open.c                            Reduced the number of words accessed in page 0, 
+                                                            added driver interface layer, added additional 
+                                                            diagnostic information, added logic to initialize 
+                                                            the maximum mapped logical sector, and added 
+                                                            initialization of the last found sector block.
+            lx_nand_flash_physical_page_allocate.c          Reduced the number of words accessed in page 0, 
+                                                            added driver interface layer, and added logic 
+                                                            to use page 0's extra bytes to determine if  
+                                                            block has available pages.
+            lx_nand_flash_sector_read.c                     Added driver interface layer.
+            lx_nand_flash_sector_release.c                  Added logic to maintain the maximum mapped 
+                                                            sector, and added driver interface layer.
+            lx_nand_flash_sector_write.c                    Added call to see if the block is completely 
+                                                            obsoleted, added logic to remember the maximum 
+                                                            mapped sector, and added driver interface layer.
+            fx_nand_flash_simulator_driver.c                Removed sector packing by requiring sector and 
+                                                            cluster size to match, and added release sector 
+                                                            support.
+            fx*.c                                           Changed comments and copyright header.
+            lx*.c                                           Changed comments and copyright header.
+            lx*.h                                           Changed comments and copyright header.
+
+08/01/2016  LevelX generic code version 5.1. This release includes the following 
+            modifications:
+
+            lx_nor_flash_physical_sector_allocate.c         Corrected problem with more than 32 sectors per 
+                                                            flash block.
+            fx*.c                                           Changed comments and copyright header.
+            lx*.c                                           Changed comments and copyright header.
+            lx*.h                                           Changed comments and copyright header.
+
+01/22/2015  Initial LevelX generic code version 5.0. 
@@ -0,0 +1,2 @@
+#!/bin/bash
+$(dirname `realpath $0`)/../test/cmake/run.sh build all
@@ -0,0 +1,28 @@
+#!/bin/bash
+#
+
+# Remove large folder
+rm -rf /opt/hostedtoolcache
+
+# Install necessary softwares for Ubuntu.
+
+sudo apt-get update
+sudo apt-get install -y \
+    gcc-multilib \
+    git \
+    g++ \
+    python3-pip \
+    ninja-build \
+    unifdef \
+    p7zip-full \
+    tofrodos \
+    gawk \
+    software-properties-common
+
+wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | sudo apt-key add -
+CODENAME=$(lsb_release -c | cut -f2 -d':' | sed 's/\t//')
+apt-add-repository "deb https://apt.kitware.com/ubuntu/ $CODENAME main"
+
+python3 -m pip install --upgrade pip
+pip3 install gcovr==4.1
+pip install --upgrade cmake
@@ -0,0 +1,2 @@
+#!/bin/bash
+$(dirname `realpath $0`)/../test/cmake/run.sh test all
@@ -0,0 +1,4 @@
+threadx
+filex
+coverage_report
+.run.sh
@@ -0,0 +1,128 @@
+cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
+cmake_policy(SET CMP0054 NEW)
+cmake_policy(SET CMP0057 NEW)
+
+project(levelx_test LANGUAGES C)
+
+# Set build configurations
+set(BUILD_CONFIGURATIONS default_build_coverage 
+                         free_sector_verify_build 
+                         full_build 
+                         standalone_build
+                         standalone_free_sector_verify_build
+                         standalone_full_build
+                         new_driver_interface_build
+                         nor_obsolete_cache_build
+                         nor_mapping_cache_build
+                         nor_obsolete_mapping_cache_build)
+set(CMAKE_CONFIGURATION_TYPES
+    ${BUILD_CONFIGURATIONS}
+    CACHE STRING "list of supported configuration types" FORCE)
+set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+                                             ${CMAKE_CONFIGURATION_TYPES})
+list(GET CMAKE_CONFIGURATION_TYPES 0 BUILD_TYPE)
+if((NOT CMAKE_BUILD_TYPE) OR (NOT ("${CMAKE_BUILD_TYPE}" IN_LIST
+                                   CMAKE_CONFIGURATION_TYPES)))
+  set(CMAKE_BUILD_TYPE
+      "${BUILD_TYPE}"
+      CACHE STRING "Build Type of the project" FORCE)
+endif()
+
+message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
+message(STATUS "Using toolchain file: ${CMAKE_TOOLCHAIN_FILE}.")
+set(FX_FAULT_TOLERANT_DEFINITIONS
+    -DFX_ENABLE_FAULT_TOLERANT -DFX_UPDATE_FILE_SIZE_ON_ALLOCATE
+    -DFX_FAULT_TOLERANT_TRANSACTION_FAIL_FUNCTION)
+set(default_build_coverage "")
+set(free_sector_verify_build -DLX_FREE_SECTOR_DATA_VERIFY)
+set(full_build -DLX_FREE_SECTOR_DATA_VERIFY
+               -DLX_DIRECT_READ
+               -DLX_NAND_FLASH_DIRECT_MAPPING_CACHE
+               -DLX_NOR_DISABLE_EXTENDED_CACHE
+               -DLX_THREAD_SAFE_ENABLE)
+# For Standalone builds LX_STANADLONE_ENABLE is defined in line 61
+set(standalone_build -DLX_STANDALONE_ENABLE)
+set(standalone_free_sector_verify_build -DLX_STANDALONE_ENABLE ${free_sector_verify_build})
+set(standalone_full_build -DLX_STANDALONE_ENABLE ${full_build})
+set(new_driver_interface_build -DLX_NOR_ENABLE_CONTROL_BLOCK_FOR_DRIVER_INTERFACE
+                               -DLX_NAND_ENABLE_CONTROL_BLOCK_FOR_DRIVER_INTERFACE)
+set(nor_obsolete_cache_build   -DLX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+set(nor_mapping_cache_build -DLX_NOR_ENABLE_MAPPING_BITMAP)
+set(nor_obsolete_mapping_cache_build -DLX_NOR_ENABLE_MAPPING_BITMAP
+                               -DLX_NOR_ENABLE_OBSOLETE_COUNT_CACHE)
+
+add_compile_options(
+  -m32
+  -std=c99
+  -ggdb
+  -g3
+  -gdwarf-2
+  -fdiagnostics-color
+  -Werror
+  ${${CMAKE_BUILD_TYPE}})
+add_link_options(-m32)
+
+enable_testing()
+
+if(CMAKE_BUILD_TYPE MATCHES "standalone.*")
+  set(LX_STANDALONE_ENABLE 
+      ON 
+      CACHE BOOL "LevelX standalone enabled(No Azure RTOS ThreadX)" FORCE)
+  set(FX_STANDALONE_ENABLE 
+      ON 
+      CACHE BOOL "FileX standalone enabled(No Azure RTOS ThreadX)" FORCE)
+endif()
+
+add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/../.. levelx)
+add_subdirectory(regression)
+add_subdirectory(samples)
+
+# Coverage
+if(CMAKE_BUILD_TYPE MATCHES ".*_coverage")
+  target_compile_options(levelx PRIVATE -fprofile-arcs -ftest-coverage)
+  target_link_options(levelx PRIVATE -fprofile-arcs -ftest-coverage)
+endif()
+
+
+# Build ThreadX library once
+execute_process(COMMAND ${CMAKE_CURRENT_LIST_DIR}/run.sh build_libs)
+add_custom_target(build_libs ALL COMMAND ${CMAKE_CURRENT_LIST_DIR}/run.sh
+                                             build_libs)
+add_dependencies(levelx build_libs)
+target_include_directories(levelx PUBLIC ${CMAKE_BINARY_DIR}/../libs/inc)
+if(NOT LX_STANDALONE_ENABLE)
+    add_library(threadx SHARED IMPORTED GLOBAL)
+    add_library("azrtos::threadx" ALIAS threadx)
+    set_target_properties(
+      threadx PROPERTIES IMPORTED_LOCATION
+                         ${CMAKE_BINARY_DIR}/../libs/threadx/libthreadx.so)
+    add_library(filex SHARED IMPORTED GLOBAL)
+    add_library("azrtos::filex" ALIAS filex)
+    set_target_properties(filex PROPERTIES IMPORTED_LOCATION
+                   ${CMAKE_BINARY_DIR}/../libs/filex/libfilex.so)
+else()
+    get_filename_component(
+    externals ${CMAKE_CURRENT_SOURCE_DIR} ABSOLUTE)
+    add_subdirectory(${externals}/filex filex)
+    add_library("azrtos::filex" ALIAS filex)
+endif()
+
+target_compile_options(
+  levelx
+  PRIVATE -Werror
+          -Wall
+          -Wextra
+          -pedantic
+          -fmessage-length=0
+          -fsigned-char
+          -ffunction-sections
+          -fdata-sections
+          -Wunused
+          -Wuninitialized
+          -Wmissing-declarations
+          -Wconversion
+          -Wpointer-arith
+          -Wshadow
+          -Wlogical-op
+          -Waggregate-return
+          -Wfloat-equal)
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -e
+
+cd $(dirname $0)
+mkdir -p coverage_report/$1
+gcovr --object-directory=build/$1/levelx/CMakeFiles/levelx.dir/common/src -r ../../common/src --xml-pretty --output coverage_report/$1.xml
+gcovr --object-directory=build/$1/levelx/CMakeFiles/levelx.dir/common/src -r ../../common/src --html --html-details --output coverage_report/$1/index.html
@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
+
+project(libs LANGUAGES C)
+
+if($ENV{ENABLE_64})
+  message(STATUS "Building for 64bit")
+else()
+  add_compile_options(-m32)
+  add_link_options(-m32)
+  message(STATUS "Building for 32bit")
+endif()
+message(STATUS "Using toolchain file: ${CMAKE_TOOLCHAIN_FILE}.")
+
+get_filename_component(
+  externals ${CMAKE_CURRENT_SOURCE_DIR}/.. ABSOLUTE)
+
+if(NOT LX_STANDALONE_ENABLE)
+    add_subdirectory(${externals}/threadx threadx)
+endif()
+add_subdirectory(${externals}/filex filex)
+target_compile_options(threadx PRIVATE -DTX_ENABLE_EVENT_TRACE)
+if(NOT DEFINED ENV{ENABLE_IDLE})
+  target_compile_options(threadx PRIVATE -DTX_LINUX_NO_IDLE_ENABLE)
+endif()
+
+
+if((NOT LX_STANDALONE_ENABLE) OR (NOT FX_STANDALONE_ENABLE))
+    foreach(lib threadx filex)
+      get_target_property(dirs ${lib} INCLUDE_DIRECTORIES)
+      execute_process(COMMAND mkdir -p ${CMAKE_BINARY_DIR}/inc)
+      foreach(dir ${dirs})
+        file(GLOB header_files ${dir}/*.h)
+        foreach(header_file ${header_files})
+          execute_process(COMMAND ln -sf ${header_file} ${CMAKE_BINARY_DIR}/inc)
+        endforeach()
+      endforeach()
+    endforeach()
+endif()
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.0.0 FATAL_ERROR)
+cmake_policy(SET CMP0057 NEW)
+
+project(regression_test LANGUAGES C)
+
+set(SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/../../regression)
+
+set(regression_test_cases
+    ${SOURCE_DIR}/levelx_nand_flash_test.c
+    ${SOURCE_DIR}/levelx_nor_flash_test.c
+    ${SOURCE_DIR}/levelx_nor_flash_test_cache.c)
+
+foreach(test_case ${regression_test_cases} ${regression_test_cases_exfat})
+  get_filename_component(test_name ${test_case} NAME_WE)
+  add_executable(${test_name} ${test_case})
+  target_link_libraries(${test_name} PRIVATE azrtos::filex)
+  target_link_libraries(${test_name} PRIVATE azrtos::levelx)
+  target_compile_definitions(${test_name} PRIVATE BATCH_TEST)
+  add_test(${CMAKE_BUILD_TYPE}::${test_name} ${test_name})
+endforeach()
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+cd $(dirname $0)
+
+# if threadx repo does not exist, clone it
+[ -d threadx ] || git clone https://github.com/eclipse-threadx/threadx.git --depth 1
+[ -d filex ] || git clone https://github.com/eclipse-threadx/filex.git --depth 1
+[ -f .run.sh ] || ln -sf threadx/scripts/cmake_bootstrap.sh .run.sh
+./.run.sh $*
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.0.0 FATAL_ERROR)
+cmake_policy(SET CMP0057 NEW)
+
+project(samples LANGUAGES C)
+
+set(SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/../../../samples)
+
+set(sample_files
+    ${SOURCE_DIR}/demo_filex_nand_flash.c
+    ${SOURCE_DIR}/demo_filex_nor_flash.c)
+
+foreach(sample_file ${sample_files})
+  get_filename_component(sample_file_name ${sample_file} NAME_WE)
+  add_executable(${sample_file_name} ${sample_file})
+  target_link_libraries(${sample_file_name} PRIVATE azrtos::filex)
+  target_link_libraries(${sample_file_name} PRIVATE azrtos::levelx)
+endforeach()
Author	SHA1	Message	Date
Stefan Wick	f8899e5d6d	Merge pull request #38 from eclipse-threadx/bo-ms/add_revision_history Add revision history file.	2024-02-27 17:24:08 -08:00
Stefan Wick	acc5190739	Merge branch 'master' into bo-ms/add_revision_history	2024-02-27 17:14:01 -08:00
Stefan Wick	79cbf4019f	Merge branch 'master' into bo-ms/add_revision_history	2024-02-27 17:11:51 -08:00
Stefan Wick	2a963969bc	Merge pull request #37 from eclipse-threadx/tizho/update_version Update version number to 6.4.1	2024-02-27 17:07:24 -08:00
Bo Chen (from Dev Box)	1317123fdc	Add revision history file.	2024-02-27 16:58:07 +08:00
TiejunZhou	814a8a346c	Update version number to 6.4.1	2024-02-27 06:37:17 +00:00
Stefan Wick	34616e26e7	Merge pull request #35 from eclipse-threadx/wickste-patch-4 Update README.md	2024-02-21 07:09:23 -08:00
Stefan Wick	f840cf4ce6	Update README.md	2024-02-20 22:51:45 -08:00
Stefan Wick	ec683ddf14	Merge pull request #33 from eclipse-threadx/wickste-patch-3 Update LICENSE.txt and Delete LICENSED-HARDWARE.txt	2024-02-13 12:23:50 -08:00
Stefan Wick	1d6706dfa9	Merge branch 'master' into wickste-patch-3	2024-02-12 09:04:40 -08:00
Stefan Wick	6809f87fdd	Merge pull request #32 from eclipse-threadx/wickste-patch-2 Update CONTRIBUTING.md	2024-02-12 08:20:24 -08:00
Stefan Wick	9b766d144f	Merge branch 'master' into wickste-patch-2	2024-02-12 08:20:12 -08:00
Stefan Wick	fb4b913dc2	Merge pull request #31 from eclipse-threadx/wickste-patch-1 Create SECURITY.md	2024-02-09 10:48:15 -08:00
Stefan Wick	01517ad256	Delete LICENSED-HARDWARE.txt	2024-02-06 21:41:48 -08:00
Stefan Wick	9f85e68bd1	Update LICENSE.txt	2024-02-06 21:41:28 -08:00
Stefan Wick	bc8f7f3623	Update CONTRIBUTING.md	2024-02-06 21:15:04 -08:00
Stefan Wick	3ca016c042	Create SECURITY.md	2024-02-06 18:34:50 -08:00
Stefan Wick	4e747beb15	Merge pull request #30 from eclipse-threadx/bo-ms/copyright Update copyright.	2024-01-28 22:20:07 -08:00
Bo Chen (from Dev Box)	151863ad7c	Update copyright.	2024-01-29 14:15:48 +08:00
Stefan Wick	d7b2a72452	Merge pull request #29 from ericwol-msft/SECURITY.md-update Delete SECURITY.md	2024-01-18 17:53:20 -08:00
Eric Wolz	e432e2cfa2	Delete SECURITY.md	2024-01-18 11:38:21 -08:00
Stefan Wick	0ea87a458d	Merge pull request #28 from eclipse-threadx/tizho/update_script Update links in run.sh script	2024-01-12 14:03:10 -08:00
TiejunZhou	f8ab75e3ee	Update links in run.sh script	2024-01-12 05:58:52 +00:00
Xiuwen Cai	e74a289b41	Update release date and version Update release date and version	2023-12-28 17:43:14 +08:00
Xiuwen Cai	9551a4cda1	Update release date and version.	2023-12-28 09:01:01 +00:00
TiejunZhou	268e4edf97	Merge pull request #25 Add regression test Add regression test	2023-12-04 13:37:29 +08:00
TiejunZhou	fcce06af34	Add scripts	2023-12-01 02:16:43 +00:00
TiejunZhou	521fe0bacb	Add GitHub action to run regression test	2023-12-01 01:45:45 +00:00
TiejunZhou	772f99b415	Add test files	2023-11-30 09:26:50 +00:00
Xiuwen Cai	df4ecd8404	Update on 30 Nov 2023. Expand to see details. dd0abfd Fix sequential checking logic 6d0382a Add configuration checks	2023-11-30 05:23:36 +00:00
Xiuwen Cai	cef8e4ffeb	Update on 23 Oct 2023. Expand to see details. f203c27 Update headers and readme for 6.3.0 release. 40d3d10 Avoid clearing user extension in flash control block on opening flash 689dcc1 Added obsolete count and mapping bitmap cache for NOR flash. optimized block seraching logic. b183526 Enable weekly pipeline build to avoid CodeQL expiration 2eec506 Enable codeql in onebranch pipeline	2023-10-23 05:31:43 +00:00
Xiuwen Cai	e1a2752d6c	Update on 12 May 2023. Expand to see details. 14f4439 Update CFS usage 9b8b2f0 Update CFS usage 0a78a87 Onboard to Central Feed Services 2bd4393 create LevelX cmsis-pack	2023-05-12 07:01:11 +00:00
Tiejun Zhou	39de3e54bd	Update hardware license	2023-03-22 10:38:19 +08:00