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/**
* @file
*
* @ingroup lpc32xx_nand_mlc
*
* @brief lpc32xx_mlc_write_blocks() implementation.
*/
/*
* Copyright (c) 2010-2011 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <bsp/nand-mlc.h>
static const uint32_t ones_spare [MLC_LARGE_SPARE_WORD_COUNT] = {
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff,
0xffffffff
};
rtems_status_code lpc32xx_mlc_write_blocks(
uint32_t block_begin,
uint32_t block_end,
const void *src,
size_t src_size,
uint32_t *page_data_buffer
)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
uint32_t pages_per_block = lpc32xx_mlc_pages_per_block();
uint32_t block_count = lpc32xx_mlc_block_count();
uint32_t page_size = lpc32xx_mlc_page_size();
uint32_t block = 0;
const uint8_t *current = src;
const uint8_t *last = current;
const uint8_t *end = current + src_size;
if (block_begin > block_end || block_end > block_count) {
return RTEMS_INVALID_ID;
}
for (block = block_begin; block != block_end; ++block) {
uint32_t page_begin = block * pages_per_block;
uint32_t page_end = page_begin + pages_per_block;
uint32_t page = 0;
sc = lpc32xx_mlc_erase_block_safe_3(block, page_begin, page_end);
if (sc != RTEMS_SUCCESSFUL) {
continue;
}
for (page = page_begin; page < page_end; ++page) {
uintptr_t remainder = (uintptr_t) end - (uintptr_t) current;
size_t delta = remainder < page_size ? remainder : page_size;
if (remainder > 0) {
memcpy(page_data_buffer, current, delta);
sc = lpc32xx_mlc_write_page_with_ecc(
page,
page_data_buffer,
ones_spare
);
if (sc != RTEMS_SUCCESSFUL) {
lpc32xx_mlc_erase_block(block);
lpc32xx_mlc_zero_pages(page_begin, page_end);
current = last;
continue;
}
current += delta;
} else {
goto done;
}
}
last = current;
}
done:
if (current != end) {
return RTEMS_IO_ERROR;
}
return RTEMS_SUCCESSFUL;
}
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