mirror of
https://github.com/eclipse-threadx/levelx.git
synced 2026-09-14 12:37:01 +08:00
142 lines
6.8 KiB
C
142 lines
6.8 KiB
C
/**************************************************************************/
|
|
/* */
|
|
/* 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. */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
/** */
|
|
/** LevelX Component */
|
|
/** */
|
|
/** NAND Flash */
|
|
/** */
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
|
|
#define LX_SOURCE_CODE
|
|
|
|
|
|
/* Disable ThreadX error checking. */
|
|
|
|
#ifndef LX_DISABLE_ERROR_CHECKING
|
|
#define LX_DISABLE_ERROR_CHECKING
|
|
#endif
|
|
|
|
|
|
/* Include necessary system files. */
|
|
|
|
#include "lx_api.h"
|
|
|
|
|
|
/**************************************************************************/
|
|
/* */
|
|
/* FUNCTION RELEASE */
|
|
/* */
|
|
/* _lx_nand_flash_driver_block_erase PORTABLE C */
|
|
/* 6.1.7 */
|
|
/* AUTHOR */
|
|
/* */
|
|
/* William E. Lamie, Microsoft Corporation */
|
|
/* */
|
|
/* DESCRIPTION */
|
|
/* */
|
|
/* This function calls the driver to erase a block. */
|
|
/* */
|
|
/* INPUT */
|
|
/* */
|
|
/* nand_flash NAND flash instance */
|
|
/* block Block number */
|
|
/* erase_count Erase count for this block */
|
|
/* */
|
|
/* OUTPUT */
|
|
/* */
|
|
/* Completion Status */
|
|
/* */
|
|
/* CALLS */
|
|
/* */
|
|
/* (lx_nand_flash_driver_block_erase) Driver erase block */
|
|
/* */
|
|
/* CALLED BY */
|
|
/* */
|
|
/* Internal LevelX */
|
|
/* */
|
|
/* RELEASE HISTORY */
|
|
/* */
|
|
/* DATE NAME DESCRIPTION */
|
|
/* */
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
|
|
/* 09-30-2020 William E. Lamie Modified comment(s), */
|
|
/* resulting in version 6.1 */
|
|
/* 06-02-2021 Bhupendra Naphade Modified comment(s), */
|
|
/* resulting in version 6.1.7 */
|
|
/* */
|
|
/**************************************************************************/
|
|
UINT _lx_nand_flash_driver_block_erase(LX_NAND_FLASH *nand_flash, ULONG block, ULONG erase_count)
|
|
{
|
|
|
|
ULONG cache_index;
|
|
ULONG i;
|
|
UINT status;
|
|
|
|
|
|
/* Determine if the block status cache is enabled. */
|
|
if (nand_flash -> lx_nand_flash_block_status_cache != LX_NULL)
|
|
{
|
|
|
|
/* Save the block status value in the cache. */
|
|
nand_flash -> lx_nand_flash_block_status_cache[block] = 0xFF;
|
|
}
|
|
|
|
/* Determine if the page extra byte cache is enabled. */
|
|
if (nand_flash -> lx_nand_flash_page_extra_bytes_cache != LX_NULL)
|
|
{
|
|
|
|
/* Calculate the cache index. */
|
|
cache_index = (block * nand_flash -> lx_nand_flash_pages_per_block);
|
|
|
|
/* Loop to clear the entries in the page extra bytes cache. */
|
|
for (i = 0; i < nand_flash -> lx_nand_flash_pages_per_block; i++)
|
|
{
|
|
|
|
/* Clear each cache entry. */
|
|
nand_flash -> lx_nand_flash_page_extra_bytes_cache[cache_index+i].lx_nand_page_extra_info_logical_sector = (ULONG) 0xFFFFFFFF;
|
|
}
|
|
}
|
|
|
|
/* Determine if the page 0 cache is enabled. */
|
|
if (nand_flash -> lx_nand_flash_page_0_cache != LX_NULL)
|
|
{
|
|
|
|
/* Yes, the page 0 cache is enabled. */
|
|
|
|
/* Build index to page 0 cache. */
|
|
cache_index = block * (nand_flash -> lx_nand_flash_pages_per_block + 1);
|
|
|
|
/* Clear the associated page 0 cache. */
|
|
for (i = 0; i < (nand_flash -> lx_nand_flash_pages_per_block + 1); i++)
|
|
{
|
|
|
|
/* Clear each cache entry. */
|
|
nand_flash -> lx_nand_flash_page_0_cache[cache_index+i] = (ULONG) 0xFFFFFFFF;
|
|
}
|
|
}
|
|
|
|
/* Increment the block erases count. */
|
|
nand_flash -> lx_nand_flash_diagnostic_block_erases++;
|
|
|
|
/* Call driver erase block function. */
|
|
status = (nand_flash -> lx_nand_flash_driver_block_erase)(block, erase_count);
|
|
|
|
/* Return status. */
|
|
return(status);
|
|
}
|
|
|
|
|