1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup lpc32xx_nand_mlc |
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5 | * |
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6 | * @brief lpc32xx_mlc_write_blocks() implementation. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2010-2011 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * embedded brains GmbH |
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13 | * Obere Lagerstr. 30 |
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14 | * 82178 Puchheim |
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15 | * Germany |
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16 | * <rtems@embedded-brains.de> |
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17 | * |
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18 | * The license and distribution terms for this file may be |
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19 | * found in the file LICENSE in this distribution or at |
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20 | * http://www.rtems.org/license/LICENSE. |
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21 | */ |
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22 | |
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23 | #include <bsp/nand-mlc.h> |
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24 | |
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25 | static const uint32_t ones_spare [MLC_LARGE_SPARE_WORD_COUNT] = { |
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26 | 0xffffffff, |
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27 | 0xffffffff, |
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28 | 0xffffffff, |
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29 | 0xffffffff, |
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30 | 0xffffffff, |
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31 | 0xffffffff, |
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32 | 0xffffffff, |
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33 | 0xffffffff, |
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34 | 0xffffffff, |
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35 | 0xffffffff, |
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36 | 0xffffffff, |
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37 | 0xffffffff, |
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38 | 0xffffffff, |
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39 | 0xffffffff, |
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40 | 0xffffffff, |
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41 | 0xffffffff |
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42 | }; |
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43 | |
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44 | rtems_status_code lpc32xx_mlc_write_blocks( |
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45 | uint32_t block_begin, |
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46 | uint32_t block_end, |
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47 | const void *src, |
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48 | size_t src_size, |
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49 | uint32_t *page_data_buffer |
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50 | ) |
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51 | { |
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52 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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53 | uint32_t pages_per_block = lpc32xx_mlc_pages_per_block(); |
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54 | uint32_t block_count = lpc32xx_mlc_block_count(); |
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55 | uint32_t page_size = lpc32xx_mlc_page_size(); |
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56 | uint32_t block = 0; |
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57 | const uint8_t *current = src; |
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58 | const uint8_t *last = current; |
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59 | const uint8_t *end = current + src_size; |
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60 | |
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61 | if (block_begin > block_end || block_end > block_count) { |
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62 | return RTEMS_INVALID_ID; |
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63 | } |
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64 | |
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65 | for (block = block_begin; block != block_end; ++block) { |
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66 | uint32_t page_begin = block * pages_per_block; |
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67 | uint32_t page_end = page_begin + pages_per_block; |
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68 | uint32_t page = 0; |
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69 | |
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70 | sc = lpc32xx_mlc_erase_block_safe_3(block, page_begin, page_end); |
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71 | if (sc != RTEMS_SUCCESSFUL) { |
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72 | continue; |
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73 | } |
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74 | |
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75 | for (page = page_begin; page < page_end; ++page) { |
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76 | uintptr_t remainder = (uintptr_t) end - (uintptr_t) current; |
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77 | size_t delta = remainder < page_size ? remainder : page_size; |
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78 | |
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79 | if (remainder > 0) { |
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80 | memcpy(page_data_buffer, current, delta); |
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81 | sc = lpc32xx_mlc_write_page_with_ecc( |
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82 | page, |
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83 | page_data_buffer, |
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84 | ones_spare |
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85 | ); |
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86 | if (sc != RTEMS_SUCCESSFUL) { |
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87 | lpc32xx_mlc_erase_block(block); |
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88 | lpc32xx_mlc_zero_pages(page_begin, page_end); |
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89 | current = last; |
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90 | continue; |
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91 | } |
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92 | |
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93 | current += delta; |
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94 | } else { |
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95 | goto done; |
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96 | } |
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97 | } |
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98 | |
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99 | last = current; |
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100 | } |
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101 | |
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102 | done: |
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103 | |
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104 | if (current != end) { |
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105 | return RTEMS_IO_ERROR; |
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106 | } |
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107 | |
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108 | return RTEMS_SUCCESSFUL; |
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109 | } |
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