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Update on 18 Jan 2023. Expand to see details.
22299de Remove internal deprecated files. 2b9332f Fix ECC issues by new NAND logic 6a5eda1 Add a notice for not released file. b756fb0 Upgrade to the latest Container Images.
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Xiuwen Cai
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/**************************************************************************/
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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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/** NAND 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_nand_flash_data_page_copy PORTABLE C */
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/* 6.x */
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/* AUTHOR */
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/* */
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/* Xiuwen Cai, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function copies logical sectors into new block. */
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/* */
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/* INPUT */
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/* */
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/* nand_flash NAND flash instance */
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/* logical_sector Logical sector number */
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/* source_block Source block number */
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/* src_block_status Source block status */
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/* destination_block Destination block number */
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/* dest_block_status_ptr Pointer to destination block */
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/* status */
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/* sectors Number of sectors to copy */
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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_nand_flash_driver_pages_copy Driver pages copy */
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/* lx_nand_flash_driver_pages_read Driver pages read */
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/* _lx_nand_flash_system_error Internal system error handler */
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/* */
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/* CALLED BY */
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/* */
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/* Internal LevelX */
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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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/* xx-xx-xxxx Xiuwen Cai Initial Version 6.x */
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/* */
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/**************************************************************************/
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UINT _lx_nand_flash_data_page_copy(LX_NAND_FLASH* nand_flash, ULONG logical_sector, ULONG source_block, USHORT src_block_status,
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ULONG destination_block, USHORT* dest_block_status_ptr, ULONG sectors)
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{
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LONG source_page;
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ULONG destination_page;
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UINT status = LX_SUCCESS;
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UINT i;
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ULONG available_pages;
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ULONG spare_data1;
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UCHAR *spare_buffer_ptr;
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ULONG dest_block_status;
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ULONG number_of_pages;
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/* Get the destination block status. */
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dest_block_status = *dest_block_status_ptr;
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/* Get the current page number of the destination block. */
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destination_page = dest_block_status & LX_NAND_BLOCK_STATUS_PAGE_NUMBER_MASK;
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/* Get the available pages in the source block. */
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available_pages = (src_block_status & LX_NAND_BLOCK_STATUS_FULL) ? (nand_flash -> lx_nand_flash_pages_per_block) : (src_block_status & LX_NAND_BLOCK_STATUS_PAGE_NUMBER_MASK);
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/* Check if pages in the source block are sequential. */
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if (src_block_status & LX_NAND_BLOCK_STATUS_NON_SEQUENTIAL)
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{
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/* Get buffer for spare data. */
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spare_buffer_ptr = nand_flash -> lx_nand_flash_page_buffer + nand_flash -> lx_nand_flash_bytes_per_page;
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/* Loop to copy the data. */
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for (i = 0; i < sectors; i++)
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{
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/* Loop to search the page. */
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for (source_page = (LONG)(available_pages - 1); source_page >= 0; source_page--)
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{
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/* Read one page. */
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status = (nand_flash -> lx_nand_flash_driver_pages_read)(source_block, (ULONG)source_page, LX_NULL, spare_buffer_ptr, 1);
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/* Check for an error from flash driver. */
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if (status)
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{
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/* Call system error handler. */
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_lx_nand_flash_system_error(nand_flash, status, source_block, 0);
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/* Return an error. */
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return(LX_ERROR);
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}
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/* Get the spare data. */
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spare_data1 = LX_UTILITY_LONG_GET(&spare_buffer_ptr[nand_flash -> lx_nand_flash_spare_data1_offset]);
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/* Check the address match. */
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if ((spare_data1 & LX_NAND_PAGE_TYPE_USER_DATA_MASK) == (logical_sector + i))
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{
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/* Check if the page contains valid data. */
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if ((spare_data1 & (~LX_NAND_PAGE_TYPE_USER_DATA_MASK)) == (LX_NAND_PAGE_TYPE_USER_DATA))
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{
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/* Call the driver to copy the page. */
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status = (nand_flash -> lx_nand_flash_driver_pages_copy)(source_block, (ULONG)source_page, destination_block, destination_page, 1, nand_flash -> lx_nand_flash_page_buffer);
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/* Check for an error from flash driver. */
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if (status)
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{
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/* Call system error handler. */
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_lx_nand_flash_system_error(nand_flash, status, source_block, 0);
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/* Return an error. */
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return(LX_ERROR);
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}
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/* Check if the pages in destination block is still sequential. */
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if ((destination_page) != (logical_sector + i % nand_flash -> lx_nand_flash_pages_per_block))
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{
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/* Mark the block status as non sequential. */
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dest_block_status |= LX_NAND_BLOCK_STATUS_NON_SEQUENTIAL;
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}
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/* Update the available pages. */
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destination_page++;
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/* Check if available page count reaches pages per block. */
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if (destination_page == nand_flash -> lx_nand_flash_pages_per_block)
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{
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/* Set block full flag. */
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dest_block_status |= LX_NAND_BLOCK_STATUS_FULL;
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}
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}
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break;
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}
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}
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}
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}
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else
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{
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/* Get the source page number. */
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source_page = (LONG)(logical_sector % nand_flash -> lx_nand_flash_pages_per_block);
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/* Check if the page to copy is greater than the available pages. */
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number_of_pages = ((ULONG)source_page + sectors) > available_pages ?
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(available_pages > (ULONG)source_page ? available_pages - (ULONG)source_page : 0) : sectors;
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/* Check if there is any pages to be copied. */
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if (number_of_pages)
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{
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/* Call the driver to copy pages. */
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status = (nand_flash -> lx_nand_flash_driver_pages_copy)(source_block, (ULONG)source_page, destination_block, destination_page, number_of_pages, nand_flash -> lx_nand_flash_page_buffer);
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/* Check for an error from flash driver. */
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if (status)
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{
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/* Call system error handler. */
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_lx_nand_flash_system_error(nand_flash, status, source_block, 0);
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/* Return an error. */
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return(LX_ERROR);
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}
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/* Check if the pages in destination block is still sequential. */
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if ((ULONG)source_page != destination_page)
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{
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/* Mark the block status as non sequential. */
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dest_block_status |= LX_NAND_BLOCK_STATUS_NON_SEQUENTIAL;
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}
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/* Update the available pages. */
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destination_page += number_of_pages;
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/* Check if available page count reaches pages per block. */
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if (destination_page == nand_flash -> lx_nand_flash_pages_per_block)
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{
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/* Set block full flag. */
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dest_block_status |= LX_NAND_BLOCK_STATUS_FULL;
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}
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}
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}
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/* Return the block status. */
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*dest_block_status_ptr = (USHORT)(destination_page | (dest_block_status & ~LX_NAND_BLOCK_STATUS_PAGE_NUMBER_MASK));
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/* Return status. */
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return(status);
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}
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