mirror of
https://github.com/eclipse-threadx/levelx.git
synced 2026-09-14 12:37:01 +08:00
Xiuwen Cai
a8bc412907
075bb4c Update patch version. a30e30b Update version and date for release. a6b42b2 Update owners 6a3e60b Add user extension in flash control block
157 lines
7.7 KiB
C
157 lines
7.7 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** LevelX Component */
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/** */
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/** NOR Flash */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define LX_SOURCE_CODE
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/* Disable ThreadX error checking. */
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#ifndef LX_DISABLE_ERROR_CHECKING
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#define LX_DISABLE_ERROR_CHECKING
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#endif
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/* Include necessary system files. */
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#include "lx_api.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _lx_nor_flash_driver_write PORTABLE C */
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/* 6.2.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function performs a write of the NOR flash memory. */
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/* */
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/* INPUT */
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/* */
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/* nor_flash NOR flash instance */
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/* flash_address Address of NOR flash to write */
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/* source Source for the write */
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/* words Number of words to write */
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/* */
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/* OUTPUT */
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/* */
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/* return status */
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/* */
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/* CALLS */
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/* */
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/* (lx_nor_flash_driver_write) Actual driver write */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 William E. Lamie Modified comment(s), */
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/* resulting in version 6.1 */
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/* 06-02-2021 Bhupendra Naphade Modified comment(s), */
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/* resulting in version 6.1.7 */
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/* 03-08-2023 Xiuwen Cai Modified comment(s), */
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/* added new driver interface, */
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/* resulting in version 6.2.1 */
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/* */
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/**************************************************************************/
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UINT _lx_nor_flash_driver_write(LX_NOR_FLASH *nor_flash, ULONG *flash_address, ULONG *source, ULONG words)
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{
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#ifndef LX_NOR_DISABLE_EXTENDED_CACHE
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UINT status;
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UINT i;
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ULONG *cache_entry_start;
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ULONG *cache_entry_end;
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ULONG cache_offset;
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/* Is the request a whole sector or a partial sector. */
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if ((words == 1) && (nor_flash -> lx_nor_flash_extended_cache_entries))
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{
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/* One word request, which implies that it is a NOR flash metadata write. */
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/* Loop through the cache entries to see if there is a sector in cache. */
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for (i = 0; i < nor_flash -> lx_nor_flash_extended_cache_entries; i++)
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{
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/* Search through the cache to see if there is a cache entry. */
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/* Determine the cache entry addresses. */
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cache_entry_start = nor_flash -> lx_nor_flash_extended_cache[i].lx_nor_flash_extended_cache_entry_sector_address;
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cache_entry_end = cache_entry_start + LX_NOR_SECTOR_SIZE;
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/* Determine if the flash address in in the cache entry. */
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if ((cache_entry_start) && (flash_address >= cache_entry_start) && (flash_address < cache_entry_end))
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{
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/* Yes, we found the entry. */
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/* Calculate the offset into the cache entry. */
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cache_offset = (ULONG)(flash_address - cache_entry_start);
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/* Copy the word into the cache. */
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*(nor_flash -> lx_nor_flash_extended_cache[i].lx_nor_flash_extended_cache_entry_sector_memory + cache_offset) = *source;
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/* Get out of the loop. */
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break;
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}
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}
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}
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/* In any case, call the actual driver write function. */
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#ifdef LX_NOR_ENABLE_CONTROL_BLOCK_FOR_DRIVER_INTERFACE
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status = (nor_flash -> lx_nor_flash_driver_write)(nor_flash, flash_address, source, words);
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#else
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status = (nor_flash -> lx_nor_flash_driver_write)(flash_address, source, words);
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#endif
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/* Return completion status. */
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return(status);
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#else
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UINT status;
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/* Call the actual driver write function. */
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#ifdef LX_NOR_ENABLE_CONTROL_BLOCK_FOR_DRIVER_INTERFACE
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status = (nor_flash -> lx_nor_flash_driver_write)(nor_flash, flash_address, source, words);
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#else
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status = (nor_flash -> lx_nor_flash_driver_write)(flash_address, source, words);
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#endif
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/* Return completion status. */
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return(status);
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#endif
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}
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