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2020-05-11 08:49:43 -06:00
commit 6f4ea0561f
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common/src/lx_nand_flash_driver_write.c
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/**************************************************************************/
/* */
/* 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 TX_DISABLE_ERROR_CHECKING
#define TX_DISABLE_ERROR_CHECKING
#endif
/* Include necessary system files. */
#include "lx_api.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _lx_nand_flash_driver_write PORTABLE C */
/* 6.0 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function calls the driver to write data to a NAND page. */
/* */
/* INPUT */
/* */
/* nand_flash NAND flash instance */
/* block Block number */
/* page Page number */
/* source Pointer to source buffer */
/* words Number of words to write */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* (lx_nand_flash_driver_write) Driver page write */
/* */
/* CALLED BY */
/* */
/* Internal LevelX */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
/* */
/**************************************************************************/
UINT _lx_nand_flash_driver_write(LX_NAND_FLASH *nand_flash, ULONG block, ULONG page, ULONG *source, ULONG words)
{
ULONG cache_index;
ULONG *source_ptr;
ULONG *destination_ptr;
ULONG i;
UINT status;
/* Determine if this is page 0. */
if (page == 0)
{
/* 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. */
/* Calculate the cache index. */
cache_index = (block * (nand_flash -> lx_nand_flash_pages_per_block + 1));
/* Setup destination pointer. */
destination_ptr = &nand_flash -> lx_nand_flash_page_0_cache[cache_index];
/* Setup source pointer. */
source_ptr = (ULONG *) source;
/* Simply copy the page 0 information to the destination. */
for (i = 0; i < (nand_flash -> lx_nand_flash_pages_per_block + 1); i++)
{
/* Copy one word. */
*destination_ptr++ = *source_ptr++;
}
}
}
/* Increment the page write count. */
nand_flash -> lx_nand_flash_diagnostic_page_writes++;
/* Call driver write function. */
status = (nand_flash -> lx_nand_flash_driver_write)(block, page, source, words);
/* Return status. */
return(status);
}