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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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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_block_mapping_set PORTABLE C */ |
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/* 6.2.1 */ |
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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 sets block mappings. */ |
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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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/* block Block number */ |
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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_metadata_write Write metadata */ |
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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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/**************************************************************************/ |
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UINT _lx_nand_flash_block_mapping_set(LX_NAND_FLASH *nand_flash, ULONG logical_sector, ULONG block) |
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{ |
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UINT block_mapping_index; |
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UCHAR page_number; |
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UINT status; |
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/* Get the mapping index from logic sector address. */ |
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block_mapping_index = logical_sector / nand_flash -> lx_nand_flash_pages_per_block; |
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/* Check the address range. */ |
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✗✓ |
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if (block_mapping_index > nand_flash -> lx_nand_flash_block_mapping_table_size / sizeof(*nand_flash -> lx_nand_flash_block_mapping_table)) |
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{ |
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/* Out of range, return an error. */ |
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return(LX_ERROR); |
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} |
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/* Save the block number to mapping table. */ |
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nand_flash -> lx_nand_flash_block_mapping_table[block_mapping_index] = (USHORT)block; |
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/* Get the page number to write. */ |
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page_number = (UCHAR)(block_mapping_index * sizeof(*nand_flash -> lx_nand_flash_block_mapping_table) / nand_flash -> lx_nand_flash_bytes_per_page); |
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/* Save the mapping table. */ |
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status = _lx_nand_flash_metadata_write(nand_flash, ((UCHAR*)nand_flash -> lx_nand_flash_block_mapping_table) + |
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page_number * nand_flash -> lx_nand_flash_bytes_per_page, |
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LX_NAND_PAGE_TYPE_BLOCK_MAPPING_TABLE | page_number); |
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/* Return status. */ |
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return(status); |
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} |
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