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