1 | /* |
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2 | * (C) Copyright 2001-2003 |
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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 <mpc824x.h> |
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26 | #include <asm/processor.h> |
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27 | |
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28 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
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29 | # ifndef CONFIG_ENV_ADDR |
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30 | # define CONFIG_ENV_ADDR (CFG_FLASH_BASE + CONFIG_ENV_OFFSET) |
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31 | # endif |
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32 | # ifndef CONFIG_ENV_SIZE |
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33 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE |
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34 | # endif |
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35 | # ifndef CONFIG_ENV_SECT_SIZE |
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36 | # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE |
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37 | # endif |
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38 | #endif |
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39 | |
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40 | #define FLASH_BANK_SIZE 0x800000 |
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41 | #define MAIN_SECT_SIZE 0x40000 |
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42 | #define PARAM_SECT_SIZE 0x8000 |
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43 | |
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44 | flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; |
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45 | |
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46 | static int write_data (flash_info_t * info, ulong dest, ulong * data); |
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47 | static void write_via_fpu (vu_long * addr, ulong * data); |
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48 | static __inline__ unsigned long get_msr (void); |
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49 | static __inline__ void set_msr (unsigned long msr); |
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50 | |
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51 | /*---------------------------------------------------------------------*/ |
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52 | #undef DEBUG_FLASH |
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53 | |
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54 | /*---------------------------------------------------------------------*/ |
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55 | #ifdef DEBUG_FLASH |
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56 | #define DEBUGF(fmt,args...) printf(fmt ,##args) |
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57 | #else |
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58 | #define DEBUGF(fmt,args...) |
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59 | #endif |
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60 | /*---------------------------------------------------------------------*/ |
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61 | |
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62 | /*----------------------------------------------------------------------- |
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63 | */ |
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64 | |
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65 | unsigned long flash_init (void) |
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66 | { |
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67 | int i, j; |
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68 | ulong size = 0; |
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69 | uchar tempChar; |
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70 | vu_long *tmpaddr; |
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71 | |
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72 | /* Enable flash writes on CPC45 */ |
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73 | |
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74 | tempChar = BOARD_CTRL; |
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75 | |
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76 | tempChar |= (B_CTRL_FWPT_1 | B_CTRL_FWRE_1); |
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77 | |
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78 | tempChar &= ~(B_CTRL_FWPT_0 | B_CTRL_FWRE_0); |
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79 | |
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80 | BOARD_CTRL = tempChar; |
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81 | |
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82 | __asm__ volatile ("sync\n eieio"); |
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83 | |
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84 | for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { |
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85 | vu_long *addr = (vu_long *) (CFG_FLASH_BASE + i * FLASH_BANK_SIZE); |
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86 | |
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87 | addr[0] = 0x00900090; |
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88 | |
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89 | __asm__ volatile ("sync\n eieio"); |
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90 | |
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91 | udelay (100); |
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92 | |
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93 | DEBUGF ("Flash bank # %d:\n" |
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94 | "\tManuf. ID @ 0x%08lX: 0x%08lX\n" |
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95 | "\tDevice ID @ 0x%08lX: 0x%08lX\n", |
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96 | i, |
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97 | (ulong) (&addr[0]), addr[0], |
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98 | (ulong) (&addr[2]), addr[2]); |
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99 | |
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100 | |
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101 | if ((addr[0] == addr[1]) && (addr[0] == INTEL_MANUFACT) && |
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102 | (addr[2] == addr[3]) && (addr[2] == INTEL_ID_28F160F3T)) { |
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103 | |
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104 | flash_info[i].flash_id = |
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105 | (FLASH_MAN_INTEL & FLASH_VENDMASK) | |
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106 | (INTEL_ID_28F160F3T & FLASH_TYPEMASK); |
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107 | |
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108 | } else if ((addr[0] == addr[1]) && (addr[0] == INTEL_MANUFACT) |
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109 | && (addr[2] == addr[3]) |
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110 | && (addr[2] == INTEL_ID_28F160C3T)) { |
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111 | |
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112 | flash_info[i].flash_id = |
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113 | (FLASH_MAN_INTEL & FLASH_VENDMASK) | |
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114 | (INTEL_ID_28F160C3T & FLASH_TYPEMASK); |
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115 | |
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116 | } else { |
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117 | flash_info[i].flash_id = FLASH_UNKNOWN; |
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118 | addr[0] = 0xFFFFFFFF; |
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119 | goto Done; |
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120 | } |
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121 | |
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122 | DEBUGF ("flash_id = 0x%08lX\n", flash_info[i].flash_id); |
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123 | |
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124 | addr[0] = 0xFFFFFFFF; |
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125 | |
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126 | flash_info[i].size = FLASH_BANK_SIZE; |
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127 | flash_info[i].sector_count = CFG_MAX_FLASH_SECT; |
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128 | memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); |
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129 | for (j = 0; j < flash_info[i].sector_count; j++) { |
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130 | if (j > 30) { |
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131 | flash_info[i].start[j] = CFG_FLASH_BASE + |
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132 | i * FLASH_BANK_SIZE + |
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133 | (MAIN_SECT_SIZE * 31) + (j - |
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134 | 31) * |
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135 | PARAM_SECT_SIZE; |
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136 | } else { |
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137 | flash_info[i].start[j] = CFG_FLASH_BASE + |
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138 | i * FLASH_BANK_SIZE + |
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139 | j * MAIN_SECT_SIZE; |
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140 | } |
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141 | } |
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142 | |
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143 | /* unlock sectors, if 160C3T */ |
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144 | |
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145 | for (j = 0; j < flash_info[i].sector_count; j++) { |
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146 | tmpaddr = (vu_long *) flash_info[i].start[j]; |
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147 | |
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148 | if ((flash_info[i].flash_id & FLASH_TYPEMASK) == |
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149 | (INTEL_ID_28F160C3T & FLASH_TYPEMASK)) { |
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150 | tmpaddr[0] = 0x00600060; |
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151 | tmpaddr[0] = 0x00D000D0; |
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152 | tmpaddr[1] = 0x00600060; |
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153 | tmpaddr[1] = 0x00D000D0; |
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154 | } |
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155 | } |
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156 | |
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157 | size += flash_info[i].size; |
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158 | |
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159 | addr[0] = 0x00FF00FF; |
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160 | addr[1] = 0x00FF00FF; |
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161 | } |
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162 | |
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163 | /* Protect monitor and environment sectors |
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164 | */ |
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165 | #if CFG_MONITOR_BASE >= CFG_FLASH_BASE + FLASH_BANK_SIZE |
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166 | flash_protect (FLAG_PROTECT_SET, |
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167 | CFG_MONITOR_BASE, |
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168 | CFG_MONITOR_BASE + monitor_flash_len - 1, |
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169 | &flash_info[1]); |
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170 | #else |
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171 | flash_protect (FLAG_PROTECT_SET, |
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172 | CFG_MONITOR_BASE, |
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173 | CFG_MONITOR_BASE + monitor_flash_len - 1, |
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174 | &flash_info[0]); |
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175 | #endif |
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176 | |
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177 | #if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR) |
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178 | #if CONFIG_ENV_ADDR >= CFG_FLASH_BASE + FLASH_BANK_SIZE |
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179 | flash_protect (FLAG_PROTECT_SET, |
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180 | CONFIG_ENV_ADDR, |
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181 | CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[1]); |
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182 | #else |
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183 | flash_protect (FLAG_PROTECT_SET, |
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184 | CONFIG_ENV_ADDR, |
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185 | CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]); |
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186 | #endif |
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187 | #endif |
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188 | |
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189 | Done: |
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190 | return size; |
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191 | } |
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192 | |
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193 | /*----------------------------------------------------------------------- |
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194 | */ |
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195 | void flash_print_info (flash_info_t * info) |
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196 | { |
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197 | int i; |
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198 | |
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199 | switch ((i = info->flash_id & FLASH_VENDMASK)) { |
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200 | case (FLASH_MAN_INTEL & FLASH_VENDMASK): |
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201 | printf ("Intel: "); |
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202 | break; |
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203 | default: |
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204 | printf ("Unknown Vendor 0x%04x ", i); |
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205 | break; |
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206 | } |
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207 | |
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208 | switch ((i = info->flash_id & FLASH_TYPEMASK)) { |
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209 | case (INTEL_ID_28F160F3T & FLASH_TYPEMASK): |
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210 | printf ("28F160F3T (16Mbit)\n"); |
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211 | break; |
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212 | |
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213 | case (INTEL_ID_28F160C3T & FLASH_TYPEMASK): |
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214 | printf ("28F160C3T (16Mbit)\n"); |
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215 | break; |
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216 | |
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217 | default: |
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218 | printf ("Unknown Chip Type 0x%04x\n", i); |
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219 | goto Done; |
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220 | break; |
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221 | } |
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222 | |
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223 | printf (" Size: %ld MB in %d Sectors\n", |
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224 | info->size >> 20, info->sector_count); |
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225 | |
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226 | printf (" Sector Start Addresses:"); |
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227 | for (i = 0; i < info->sector_count; i++) { |
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228 | if ((i % 5) == 0) { |
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229 | printf ("\n "); |
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230 | } |
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231 | printf (" %08lX%s", info->start[i], |
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232 | info->protect[i] ? " (RO)" : " "); |
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233 | } |
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234 | printf ("\n"); |
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235 | |
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236 | Done: |
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237 | return; |
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238 | } |
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239 | |
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240 | /*----------------------------------------------------------------------- |
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241 | */ |
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242 | |
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243 | int flash_erase (flash_info_t * info, int s_first, int s_last) |
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244 | { |
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245 | int flag, prot, sect; |
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246 | ulong start, now, last; |
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247 | |
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248 | DEBUGF ("Erase flash bank %d sect %d ... %d\n", |
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249 | info - &flash_info[0], s_first, s_last); |
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250 | |
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251 | if ((s_first < 0) || (s_first > s_last)) { |
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252 | if (info->flash_id == FLASH_UNKNOWN) { |
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253 | printf ("- missing\n"); |
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254 | } else { |
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255 | printf ("- no sectors to erase\n"); |
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256 | } |
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257 | return 1; |
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258 | } |
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259 | |
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260 | if ((info->flash_id & FLASH_VENDMASK) != |
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261 | (FLASH_MAN_INTEL & FLASH_VENDMASK)) { |
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262 | printf ("Can erase only Intel flash types - aborted\n"); |
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263 | return 1; |
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264 | } |
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265 | |
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266 | prot = 0; |
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267 | for (sect = s_first; sect <= s_last; ++sect) { |
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268 | if (info->protect[sect]) { |
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269 | prot++; |
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270 | } |
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271 | } |
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272 | |
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273 | if (prot) { |
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274 | printf ("- Warning: %d protected sectors will not be erased!\n", prot); |
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275 | } else { |
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276 | printf ("\n"); |
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277 | } |
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278 | |
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279 | start = get_timer (0); |
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280 | last = start; |
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281 | /* Start erase on unprotected sectors */ |
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282 | for (sect = s_first; sect <= s_last; sect++) { |
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283 | if (info->protect[sect] == 0) { /* not protected */ |
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284 | vu_long *addr = (vu_long *) (info->start[sect]); |
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285 | |
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286 | DEBUGF ("Erase sect %d @ 0x%08lX\n", |
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287 | sect, (ulong) addr); |
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288 | |
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289 | /* Disable interrupts which might cause a timeout |
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290 | * here. |
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291 | */ |
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292 | flag = disable_interrupts (); |
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293 | |
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294 | addr[0] = 0x00500050; /* clear status register */ |
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295 | addr[0] = 0x00200020; /* erase setup */ |
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296 | addr[0] = 0x00D000D0; /* erase confirm */ |
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297 | |
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298 | addr[1] = 0x00500050; /* clear status register */ |
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299 | addr[1] = 0x00200020; /* erase setup */ |
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300 | addr[1] = 0x00D000D0; /* erase confirm */ |
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301 | |
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302 | /* re-enable interrupts if necessary */ |
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303 | if (flag) |
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304 | enable_interrupts (); |
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305 | |
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306 | /* wait at least 80us - let's wait 1 ms */ |
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307 | udelay (1000); |
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308 | |
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309 | while (((addr[0] & 0x00800080) != 0x00800080) || |
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310 | ((addr[1] & 0x00800080) != 0x00800080)) { |
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311 | if ((now = get_timer (start)) > |
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312 | CFG_FLASH_ERASE_TOUT) { |
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313 | printf ("Timeout\n"); |
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314 | addr[0] = 0x00B000B0; /* suspend erase */ |
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315 | addr[0] = 0x00FF00FF; /* to read mode */ |
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316 | return 1; |
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317 | } |
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318 | |
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319 | /* show that we're waiting */ |
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320 | if ((now - last) > 1000) { /* every second */ |
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321 | putc ('.'); |
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322 | last = now; |
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323 | } |
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324 | } |
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325 | |
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326 | addr[0] = 0x00FF00FF; |
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327 | } |
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328 | } |
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329 | printf (" done\n"); |
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330 | return 0; |
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331 | } |
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332 | |
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333 | /*----------------------------------------------------------------------- |
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334 | * Copy memory to flash, returns: |
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335 | * 0 - OK |
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336 | * 1 - write timeout |
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337 | * 2 - Flash not erased |
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338 | * 4 - Flash not identified |
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339 | */ |
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340 | |
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341 | #define FLASH_WIDTH 8 /* flash bus width in bytes */ |
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342 | |
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343 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
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344 | { |
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345 | ulong wp, cp, msr; |
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346 | int l, rc, i; |
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347 | ulong data[2]; |
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348 | ulong *datah = &data[0]; |
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349 | ulong *datal = &data[1]; |
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350 | |
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351 | DEBUGF ("Flash write_buff: @ 0x%08lx, src 0x%08lx len %ld\n", |
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352 | addr, (ulong) src, cnt); |
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353 | |
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354 | if (info->flash_id == FLASH_UNKNOWN) { |
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355 | return 4; |
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356 | } |
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357 | |
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358 | msr = get_msr (); |
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359 | set_msr (msr | MSR_FP); |
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360 | |
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361 | wp = (addr & ~(FLASH_WIDTH - 1)); /* get lower aligned address */ |
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362 | |
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363 | /* |
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364 | * handle unaligned start bytes |
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365 | */ |
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366 | if ((l = addr - wp) != 0) { |
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367 | *datah = *datal = 0; |
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368 | |
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369 | for (i = 0, cp = wp; i < l; i++, cp++) { |
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370 | if (i >= 4) { |
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371 | *datah = (*datah << 8) | |
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372 | ((*datal & 0xFF000000) >> 24); |
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373 | } |
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374 | |
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375 | *datal = (*datal << 8) | (*(uchar *) cp); |
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376 | } |
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377 | for (; i < FLASH_WIDTH && cnt > 0; ++i) { |
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378 | char tmp = *src++; |
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379 | |
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380 | if (i >= 4) { |
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381 | *datah = (*datah << 8) | |
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382 | ((*datal & 0xFF000000) >> 24); |
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383 | } |
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384 | |
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385 | *datal = (*datal << 8) | tmp; |
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386 | --cnt; |
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387 | ++cp; |
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388 | } |
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389 | |
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390 | for (; cnt == 0 && i < FLASH_WIDTH; ++i, ++cp) { |
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391 | if (i >= 4) { |
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392 | *datah = (*datah << 8) | |
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393 | ((*datal & 0xFF000000) >> 24); |
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394 | } |
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395 | |
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396 | *datal = (*datah << 8) | (*(uchar *) cp); |
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397 | } |
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398 | |
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399 | if ((rc = write_data (info, wp, data)) != 0) { |
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400 | set_msr (msr); |
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401 | return (rc); |
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402 | } |
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403 | |
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404 | wp += FLASH_WIDTH; |
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405 | } |
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406 | |
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407 | /* |
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408 | * handle FLASH_WIDTH aligned part |
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409 | */ |
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410 | while (cnt >= FLASH_WIDTH) { |
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411 | *datah = *(ulong *) src; |
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412 | *datal = *(ulong *) (src + 4); |
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413 | if ((rc = write_data (info, wp, data)) != 0) { |
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414 | set_msr (msr); |
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415 | return (rc); |
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416 | } |
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417 | wp += FLASH_WIDTH; |
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418 | cnt -= FLASH_WIDTH; |
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419 | src += FLASH_WIDTH; |
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420 | } |
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421 | |
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422 | if (cnt == 0) { |
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423 | set_msr (msr); |
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424 | return (0); |
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425 | } |
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426 | |
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427 | /* |
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428 | * handle unaligned tail bytes |
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429 | */ |
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430 | *datah = *datal = 0; |
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431 | for (i = 0, cp = wp; i < FLASH_WIDTH && cnt > 0; ++i, ++cp) { |
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432 | char tmp = *src++; |
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433 | |
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434 | if (i >= 4) { |
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435 | *datah = (*datah << 8) | ((*datal & 0xFF000000) >> |
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436 | 24); |
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437 | } |
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438 | |
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439 | *datal = (*datal << 8) | tmp; |
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440 | --cnt; |
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441 | } |
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442 | |
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443 | for (; i < FLASH_WIDTH; ++i, ++cp) { |
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444 | if (i >= 4) { |
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445 | *datah = (*datah << 8) | ((*datal & 0xFF000000) >> |
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446 | 24); |
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447 | } |
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448 | |
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449 | *datal = (*datal << 8) | (*(uchar *) cp); |
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450 | } |
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451 | |
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452 | rc = write_data (info, wp, data); |
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453 | set_msr (msr); |
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454 | |
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455 | return (rc); |
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456 | } |
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457 | |
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458 | /*----------------------------------------------------------------------- |
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459 | * Write a word to Flash, returns: |
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460 | * 0 - OK |
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461 | * 1 - write timeout |
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462 | * 2 - Flash not erased |
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463 | */ |
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464 | static int write_data (flash_info_t * info, ulong dest, ulong * data) |
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465 | { |
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466 | vu_long *addr = (vu_long *) dest; |
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467 | ulong start; |
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468 | int flag; |
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469 | |
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470 | /* Check if Flash is (sufficiently) erased */ |
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471 | if (((addr[0] & data[0]) != data[0]) || |
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472 | ((addr[1] & data[1]) != data[1])) { |
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473 | return (2); |
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474 | } |
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475 | /* Disable interrupts which might cause a timeout here */ |
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476 | flag = disable_interrupts (); |
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477 | |
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478 | addr[0] = 0x00400040; /* write setup */ |
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479 | write_via_fpu (addr, data); |
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480 | |
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481 | /* re-enable interrupts if necessary */ |
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482 | if (flag) |
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483 | enable_interrupts (); |
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484 | |
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485 | start = get_timer (0); |
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486 | |
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487 | while (((addr[0] & 0x00800080) != 0x00800080) || |
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488 | ((addr[1] & 0x00800080) != 0x00800080)) { |
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489 | if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { |
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490 | addr[0] = 0x00FF00FF; /* restore read mode */ |
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491 | return (1); |
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492 | } |
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493 | } |
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494 | |
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495 | addr[0] = 0x00FF00FF; /* restore read mode */ |
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496 | |
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497 | return (0); |
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498 | } |
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499 | |
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500 | /*----------------------------------------------------------------------- |
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501 | */ |
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502 | static void write_via_fpu (vu_long * addr, ulong * data) |
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503 | { |
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504 | __asm__ __volatile__ ("lfd 1, 0(%0)"::"r" (data)); |
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505 | __asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr)); |
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506 | } |
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507 | |
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508 | /*----------------------------------------------------------------------- |
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509 | */ |
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510 | static __inline__ unsigned long get_msr (void) |
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511 | { |
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512 | unsigned long msr; |
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513 | |
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514 | __asm__ __volatile__ ("mfmsr %0":"=r" (msr):); |
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515 | |
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516 | return msr; |
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517 | } |
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518 | |
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519 | static __inline__ void set_msr (unsigned long msr) |
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520 | { |
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521 | __asm__ __volatile__ ("mtmsr %0"::"r" (msr)); |
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522 | } |
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