1 | /* |
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2 | * (C) Copyright 2000-2004 |
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3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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4 | * |
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5 | * See file CREDITS for list of people who contributed to this |
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6 | * project. |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or |
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9 | * modify it under the terms of the GNU General Public License as |
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10 | * published by the Free Software Foundation; either version 2 of |
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11 | * the License, or (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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21 | * MA 02111-1307 USA |
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22 | */ |
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23 | |
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24 | #include <common.h> |
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25 | #include <mpc8xx.h> |
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26 | |
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27 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
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28 | |
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29 | /*----------------------------------------------------------------------- |
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30 | * Functions |
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31 | */ |
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32 | static ulong flash_get_size(vu_long * addr, flash_info_t * info); |
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33 | static int write_byte(flash_info_t * info, ulong dest, uchar data); |
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34 | static void flash_get_offsets(ulong base, flash_info_t * info); |
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35 | |
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36 | /*----------------------------------------------------------------------- |
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37 | */ |
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38 | |
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39 | unsigned long flash_init(void) |
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40 | { |
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41 | volatile immap_t *immap = (immap_t *) CFG_IMMR; |
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42 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
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43 | unsigned long size; |
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44 | #if CONFIG_NETPHONE_VERSION == 2 |
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45 | unsigned long size1; |
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46 | #endif |
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47 | int i; |
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48 | |
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49 | /* Init: no FLASHes known */ |
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50 | for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) |
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51 | flash_info[i].flash_id = FLASH_UNKNOWN; |
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52 | |
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53 | size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); |
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54 | |
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55 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
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56 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
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57 | size, size << 20); |
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58 | } |
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59 | |
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60 | /* Remap FLASH according to real size */ |
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61 | memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size & 0xFFFF8000); |
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62 | memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK)); |
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63 | |
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64 | /* Re-do sizing to get full correct info */ |
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65 | size = flash_get_size((vu_long *) CFG_FLASH_BASE, &flash_info[0]); |
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66 | |
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67 | flash_get_offsets(CFG_FLASH_BASE, &flash_info[0]); |
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68 | |
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69 | /* monitor protection ON by default */ |
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70 | flash_protect(FLAG_PROTECT_SET, |
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71 | CFG_FLASH_BASE, CFG_FLASH_BASE + monitor_flash_len - 1, |
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72 | &flash_info[0]); |
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73 | |
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74 | flash_protect ( FLAG_PROTECT_SET, |
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75 | CONFIG_ENV_ADDR, |
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76 | CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, |
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77 | &flash_info[0]); |
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78 | |
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79 | #ifdef CONFIG_ENV_ADDR_REDUND |
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80 | flash_protect ( FLAG_PROTECT_SET, |
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81 | CONFIG_ENV_ADDR_REDUND, |
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82 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1, |
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83 | &flash_info[0]); |
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84 | #endif |
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85 | |
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86 | flash_info[0].size = size; |
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87 | |
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88 | #if CONFIG_NETPHONE_VERSION == 2 |
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89 | size1 = flash_get_size((vu_long *) FLASH_BASE4_PRELIM, &flash_info[1]); |
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90 | if (size1 > 0) { |
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91 | if (flash_info[1].flash_id == FLASH_UNKNOWN) |
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92 | printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", size1, size1 << 20); |
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93 | |
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94 | /* Remap FLASH according to real size */ |
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95 | memctl->memc_or4 = CFG_OR_TIMING_FLASH | (-size1 & 0xFFFF8000); |
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96 | memctl->memc_br4 = (CFG_FLASH_BASE4 & BR_BA_MSK) | (memctl->memc_br4 & ~(BR_BA_MSK)); |
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97 | |
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98 | /* Re-do sizing to get full correct info */ |
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99 | size1 = flash_get_size((vu_long *) CFG_FLASH_BASE4, &flash_info[1]); |
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100 | |
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101 | flash_get_offsets(CFG_FLASH_BASE4, &flash_info[1]); |
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102 | |
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103 | size += size1; |
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104 | } else |
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105 | memctl->memc_br4 &= ~BR_V; |
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106 | #endif |
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107 | |
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108 | return (size); |
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109 | } |
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110 | |
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111 | /*----------------------------------------------------------------------- |
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112 | */ |
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113 | static void flash_get_offsets(ulong base, flash_info_t * info) |
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114 | { |
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115 | int i; |
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116 | |
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117 | /* set up sector start address table */ |
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118 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { |
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119 | for (i = 0; i < info->sector_count; i++) { |
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120 | info->start[i] = base + (i * 0x00010000); |
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121 | } |
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122 | } else if (info->flash_id & FLASH_BTYPE) { |
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123 | /* set sector offsets for bottom boot block type */ |
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124 | info->start[0] = base + 0x00000000; |
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125 | info->start[1] = base + 0x00004000; |
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126 | info->start[2] = base + 0x00006000; |
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127 | info->start[3] = base + 0x00008000; |
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128 | for (i = 4; i < info->sector_count; i++) { |
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129 | info->start[i] = base + (i * 0x00010000) - 0x00030000; |
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130 | } |
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131 | } else { |
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132 | /* set sector offsets for top boot block type */ |
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133 | i = info->sector_count - 1; |
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134 | info->start[i--] = base + info->size - 0x00004000; |
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135 | info->start[i--] = base + info->size - 0x00006000; |
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136 | info->start[i--] = base + info->size - 0x00008000; |
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137 | for (; i >= 0; i--) { |
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138 | info->start[i] = base + i * 0x00010000; |
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139 | } |
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140 | } |
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141 | } |
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142 | |
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143 | /*----------------------------------------------------------------------- |
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144 | */ |
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145 | void flash_print_info(flash_info_t * info) |
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146 | { |
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147 | int i; |
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148 | |
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149 | if (info->flash_id == FLASH_UNKNOWN) { |
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150 | printf("missing or unknown FLASH type\n"); |
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151 | return; |
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152 | } |
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153 | |
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154 | switch (info->flash_id & FLASH_VENDMASK) { |
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155 | case FLASH_MAN_AMD: |
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156 | printf("AMD "); |
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157 | break; |
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158 | case FLASH_MAN_FUJ: |
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159 | printf("FUJITSU "); |
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160 | break; |
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161 | case FLASH_MAN_MX: |
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162 | printf("MXIC "); |
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163 | break; |
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164 | default: |
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165 | printf("Unknown Vendor "); |
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166 | break; |
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167 | } |
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168 | |
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169 | switch (info->flash_id & FLASH_TYPEMASK) { |
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170 | case FLASH_AM040: |
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171 | printf("AM29LV040B (4 Mbit, bottom boot sect)\n"); |
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172 | break; |
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173 | case FLASH_AM400B: |
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174 | printf("AM29LV400B (4 Mbit, bottom boot sect)\n"); |
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175 | break; |
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176 | case FLASH_AM400T: |
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177 | printf("AM29LV400T (4 Mbit, top boot sector)\n"); |
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178 | break; |
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179 | case FLASH_AM800B: |
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180 | printf("AM29LV800B (8 Mbit, bottom boot sect)\n"); |
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181 | break; |
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182 | case FLASH_AM800T: |
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183 | printf("AM29LV800T (8 Mbit, top boot sector)\n"); |
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184 | break; |
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185 | case FLASH_AM160B: |
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186 | printf("AM29LV160B (16 Mbit, bottom boot sect)\n"); |
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187 | break; |
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188 | case FLASH_AM160T: |
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189 | printf("AM29LV160T (16 Mbit, top boot sector)\n"); |
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190 | break; |
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191 | case FLASH_AM320B: |
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192 | printf("AM29LV320B (32 Mbit, bottom boot sect)\n"); |
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193 | break; |
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194 | case FLASH_AM320T: |
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195 | printf("AM29LV320T (32 Mbit, top boot sector)\n"); |
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196 | break; |
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197 | default: |
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198 | printf("Unknown Chip Type\n"); |
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199 | break; |
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200 | } |
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201 | |
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202 | printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); |
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203 | |
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204 | printf(" Sector Start Addresses:"); |
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205 | for (i = 0; i < info->sector_count; ++i) { |
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206 | if ((i % 5) == 0) |
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207 | printf("\n "); |
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208 | printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); |
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209 | } |
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210 | printf("\n"); |
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211 | } |
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212 | |
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213 | /*----------------------------------------------------------------------- |
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214 | */ |
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215 | |
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216 | |
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217 | /*----------------------------------------------------------------------- |
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218 | */ |
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219 | |
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220 | /* |
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221 | * The following code cannot be run from FLASH! |
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222 | */ |
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223 | |
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224 | static ulong flash_get_size(vu_long * addr, flash_info_t * info) |
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225 | { |
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226 | short i; |
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227 | uchar mid; |
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228 | uchar pid; |
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229 | vu_char *caddr = (vu_char *) addr; |
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230 | ulong base = (ulong) addr; |
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231 | |
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232 | /* Write auto select command: read Manufacturer ID */ |
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233 | caddr[0x0555] = 0xAA; |
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234 | caddr[0x02AA] = 0x55; |
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235 | caddr[0x0555] = 0x90; |
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236 | |
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237 | mid = caddr[0]; |
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238 | switch (mid) { |
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239 | case (AMD_MANUFACT & 0xFF): |
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240 | info->flash_id = FLASH_MAN_AMD; |
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241 | break; |
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242 | case (FUJ_MANUFACT & 0xFF): |
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243 | info->flash_id = FLASH_MAN_FUJ; |
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244 | break; |
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245 | case (MX_MANUFACT & 0xFF): |
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246 | info->flash_id = FLASH_MAN_MX; |
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247 | break; |
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248 | case (STM_MANUFACT & 0xFF): |
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249 | info->flash_id = FLASH_MAN_STM; |
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250 | break; |
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251 | default: |
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252 | info->flash_id = FLASH_UNKNOWN; |
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253 | info->sector_count = 0; |
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254 | info->size = 0; |
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255 | return (0); /* no or unknown flash */ |
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256 | } |
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257 | |
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258 | pid = caddr[1]; /* device ID */ |
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259 | switch (pid) { |
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260 | case (AMD_ID_LV400T & 0xFF): |
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261 | info->flash_id += FLASH_AM400T; |
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262 | info->sector_count = 11; |
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263 | info->size = 0x00080000; |
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264 | break; /* => 512 kB */ |
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265 | |
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266 | case (AMD_ID_LV400B & 0xFF): |
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267 | info->flash_id += FLASH_AM400B; |
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268 | info->sector_count = 11; |
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269 | info->size = 0x00080000; |
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270 | break; /* => 512 kB */ |
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271 | |
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272 | case (AMD_ID_LV800T & 0xFF): |
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273 | info->flash_id += FLASH_AM800T; |
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274 | info->sector_count = 19; |
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275 | info->size = 0x00100000; |
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276 | break; /* => 1 MB */ |
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277 | |
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278 | case (AMD_ID_LV800B & 0xFF): |
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279 | info->flash_id += FLASH_AM800B; |
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280 | info->sector_count = 19; |
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281 | info->size = 0x00100000; |
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282 | break; /* => 1 MB */ |
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283 | |
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284 | case (AMD_ID_LV160T & 0xFF): |
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285 | info->flash_id += FLASH_AM160T; |
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286 | info->sector_count = 35; |
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287 | info->size = 0x00200000; |
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288 | break; /* => 2 MB */ |
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289 | |
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290 | case (AMD_ID_LV160B & 0xFF): |
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291 | info->flash_id += FLASH_AM160B; |
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292 | info->sector_count = 35; |
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293 | info->size = 0x00200000; |
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294 | break; /* => 2 MB */ |
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295 | |
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296 | case (AMD_ID_LV040B & 0xFF): |
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297 | info->flash_id += FLASH_AM040; |
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298 | info->sector_count = 8; |
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299 | info->size = 0x00080000; |
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300 | break; |
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301 | |
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302 | case (STM_ID_M29W040B & 0xFF): |
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303 | info->flash_id += FLASH_AM040; |
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304 | info->sector_count = 8; |
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305 | info->size = 0x00080000; |
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306 | break; |
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307 | |
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308 | #if 0 /* enable when device IDs are available */ |
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309 | case (AMD_ID_LV320T & 0xFF): |
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310 | info->flash_id += FLASH_AM320T; |
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311 | info->sector_count = 67; |
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312 | info->size = 0x00400000; |
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313 | break; /* => 4 MB */ |
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314 | |
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315 | case (AMD_ID_LV320B & 0xFF): |
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316 | info->flash_id += FLASH_AM320B; |
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317 | info->sector_count = 67; |
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318 | info->size = 0x00400000; |
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319 | break; /* => 4 MB */ |
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320 | #endif |
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321 | default: |
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322 | info->flash_id = FLASH_UNKNOWN; |
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323 | return (0); /* => no or unknown flash */ |
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324 | |
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325 | } |
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326 | |
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327 | printf(" "); |
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328 | /* set up sector start address table */ |
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329 | if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { |
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330 | for (i = 0; i < info->sector_count; i++) { |
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331 | info->start[i] = base + (i * 0x00010000); |
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332 | } |
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333 | } else if (info->flash_id & FLASH_BTYPE) { |
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334 | /* set sector offsets for bottom boot block type */ |
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335 | info->start[0] = base + 0x00000000; |
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336 | info->start[1] = base + 0x00004000; |
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337 | info->start[2] = base + 0x00006000; |
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338 | info->start[3] = base + 0x00008000; |
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339 | for (i = 4; i < info->sector_count; i++) { |
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340 | info->start[i] = base + (i * 0x00010000) - 0x00030000; |
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341 | } |
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342 | } else { |
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343 | /* set sector offsets for top boot block type */ |
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344 | i = info->sector_count - 1; |
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345 | info->start[i--] = base + info->size - 0x00004000; |
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346 | info->start[i--] = base + info->size - 0x00006000; |
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347 | info->start[i--] = base + info->size - 0x00008000; |
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348 | for (; i >= 0; i--) { |
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349 | info->start[i] = base + i * 0x00010000; |
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350 | } |
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351 | } |
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352 | |
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353 | /* check for protected sectors */ |
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354 | for (i = 0; i < info->sector_count; i++) { |
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355 | /* read sector protection: D0 = 1 if protected */ |
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356 | caddr = (volatile unsigned char *)(info->start[i]); |
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357 | info->protect[i] = caddr[2] & 1; |
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358 | } |
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359 | |
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360 | /* |
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361 | * Prevent writes to uninitialized FLASH. |
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362 | */ |
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363 | if (info->flash_id != FLASH_UNKNOWN) { |
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364 | caddr = (vu_char *) info->start[0]; |
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365 | |
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366 | caddr[0x0555] = 0xAA; |
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367 | caddr[0x02AA] = 0x55; |
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368 | caddr[0x0555] = 0xF0; |
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369 | |
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370 | udelay(20000); |
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371 | } |
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372 | |
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373 | return (info->size); |
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374 | } |
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375 | |
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376 | |
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377 | /*----------------------------------------------------------------------- |
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378 | */ |
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379 | |
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380 | int flash_erase(flash_info_t * info, int s_first, int s_last) |
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381 | { |
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382 | vu_char *addr = (vu_char *) (info->start[0]); |
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383 | int flag, prot, sect, l_sect; |
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384 | ulong start, now, last; |
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385 | |
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386 | if ((s_first < 0) || (s_first > s_last)) { |
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387 | if (info->flash_id == FLASH_UNKNOWN) { |
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388 | printf("- missing\n"); |
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389 | } else { |
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390 | printf("- no sectors to erase\n"); |
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391 | } |
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392 | return 1; |
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393 | } |
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394 | |
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395 | if ((info->flash_id == FLASH_UNKNOWN) || |
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396 | (info->flash_id > FLASH_AMD_COMP)) { |
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397 | printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); |
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398 | return 1; |
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399 | } |
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400 | |
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401 | prot = 0; |
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402 | for (sect = s_first; sect <= s_last; ++sect) { |
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403 | if (info->protect[sect]) { |
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404 | prot++; |
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405 | } |
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406 | } |
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407 | |
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408 | if (prot) { |
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409 | printf("- Warning: %d protected sectors will not be erased!\n", prot); |
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410 | } else { |
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411 | printf("\n"); |
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412 | } |
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413 | |
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414 | l_sect = -1; |
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415 | |
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416 | /* Disable interrupts which might cause a timeout here */ |
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417 | flag = disable_interrupts(); |
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418 | |
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419 | addr[0x0555] = 0xAA; |
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420 | addr[0x02AA] = 0x55; |
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421 | addr[0x0555] = 0x80; |
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422 | addr[0x0555] = 0xAA; |
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423 | addr[0x02AA] = 0x55; |
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424 | |
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425 | /* Start erase on unprotected sectors */ |
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426 | for (sect = s_first; sect <= s_last; sect++) { |
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427 | if (info->protect[sect] == 0) { /* not protected */ |
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428 | addr = (vu_char *) (info->start[sect]); |
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429 | addr[0] = 0x30; |
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430 | l_sect = sect; |
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431 | } |
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432 | } |
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433 | |
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434 | /* re-enable interrupts if necessary */ |
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435 | if (flag) |
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436 | enable_interrupts(); |
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437 | |
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438 | /* wait at least 80us - let's wait 1 ms */ |
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439 | udelay(1000); |
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440 | |
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441 | /* |
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442 | * We wait for the last triggered sector |
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443 | */ |
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444 | if (l_sect < 0) |
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445 | goto DONE; |
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446 | |
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447 | start = get_timer(0); |
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448 | last = start; |
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449 | addr = (vu_char *) (info->start[l_sect]); |
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450 | while ((addr[0] & 0x80) != 0x80) { |
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451 | if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { |
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452 | printf("Timeout\n"); |
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453 | return 1; |
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454 | } |
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455 | /* show that we're waiting */ |
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456 | if ((now - last) > 1000) { /* every second */ |
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457 | putc('.'); |
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458 | last = now; |
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459 | } |
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460 | } |
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461 | |
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462 | DONE: |
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463 | /* reset to read mode */ |
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464 | addr = (vu_char *) info->start[0]; |
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465 | addr[0] = 0xF0; /* reset bank */ |
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466 | |
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467 | printf(" done\n"); |
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468 | return 0; |
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469 | } |
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470 | |
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471 | /*----------------------------------------------------------------------- |
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472 | * Copy memory to flash, returns: |
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473 | * 0 - OK |
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474 | * 1 - write timeout |
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475 | * 2 - Flash not erased |
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476 | */ |
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477 | |
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478 | int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
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479 | { |
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480 | int rc; |
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481 | |
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482 | while (cnt > 0) { |
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483 | if ((rc = write_byte(info, addr++, *src++)) != 0) { |
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484 | return (rc); |
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485 | } |
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486 | --cnt; |
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487 | } |
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488 | |
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489 | return (0); |
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490 | } |
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491 | |
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492 | /*----------------------------------------------------------------------- |
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493 | * Write a word to Flash, returns: |
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494 | * 0 - OK |
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495 | * 1 - write timeout |
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496 | * 2 - Flash not erased |
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497 | */ |
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498 | static int write_byte(flash_info_t * info, ulong dest, uchar data) |
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499 | { |
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500 | vu_char *addr = (vu_char *) (info->start[0]); |
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501 | ulong start; |
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502 | int flag; |
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503 | |
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504 | /* Check if Flash is (sufficiently) erased */ |
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505 | if ((*((vu_char *) dest) & data) != data) { |
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506 | return (2); |
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507 | } |
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508 | /* Disable interrupts which might cause a timeout here */ |
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509 | flag = disable_interrupts(); |
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510 | |
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511 | addr[0x0555] = 0xAA; |
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512 | addr[0x02AA] = 0x55; |
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513 | addr[0x0555] = 0xA0; |
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514 | |
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515 | *((vu_char *) dest) = data; |
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516 | |
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517 | /* re-enable interrupts if necessary */ |
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518 | if (flag) |
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519 | enable_interrupts(); |
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520 | |
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521 | /* data polling for D7 */ |
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522 | start = get_timer(0); |
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523 | while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) { |
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524 | if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { |
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525 | return (1); |
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526 | } |
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527 | } |
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528 | return (0); |
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529 | } |
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