Mercurial > flash_v2

annotate packages/io/flash/current/src/flash.c @ 136:a9ac27ec7abc ecos-sw-2000-11-17

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Merge from eCos master repository on 2000-11-17-18:24:25-GMT
author jlarmour
date Fri, 17 Nov 2000 23:16:43 +0000
parents 6bd9d475ed4b
children 450e4e1f1e80
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1 //==========================================================================
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2 //
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3 // flash.c
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4 //
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5 // Flash programming
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2000-07-26
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37 // Purpose:
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38 // Description:
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39 //
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40 //####DESCRIPTIONEND####
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41 //
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42 //==========================================================================
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43
119
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44 #include <pkgconf/system.h>
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45 #include <pkgconf/io_flash.h>
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46
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47 #include <cyg/hal/hal_arch.h>
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48 #include <cyg/hal/hal_intr.h>
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49 #include <cyg/hal/hal_cache.h>
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50
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51 #define _FLASH_PRIVATE_
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52 #include <cyg/io/flash.h>
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53
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54 // When this flag is set,
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55 #undef RAM_FLASH_DEV_DEBUG
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56 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG)
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57 # warning "Can only enable the flash debugging when configured for RAM startup"
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58 # undef RAM_FLASH_DEV_DEBUG
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59 #endif
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60
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61 struct flash_info flash_info;
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62
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63 int
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64 flash_init(void *work_space, int work_space_size)
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65 {
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66 int err;
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67
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68 if (flash_info.init) return FLASH_ERR_OK;
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69 flash_info.work_space = work_space;
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70 flash_info.work_space_size = work_space_size;
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71 if ((err = flash_hwr_init()) != FLASH_ERR_OK) {
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72 return err;
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73 }
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74 flash_info.block_mask = ~(flash_info.block_size-1);
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75 flash_info.init = 1;
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76 return FLASH_ERR_OK;
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77 }
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78
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79 int
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80 flash_verify_addr(void *target)
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81 {
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82 if (!flash_info.init) {
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83 return FLASH_ERR_NOT_INIT;
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84 }
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85 if (((unsigned long)target >= (unsigned long)flash_info.start) &&
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86 ((unsigned long)target < (unsigned long)flash_info.end)) {
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87 return FLASH_ERR_OK;
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88 } else {
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89 return FLASH_ERR_INVALID;
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90 }
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91 }
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92
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93 int
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94 flash_get_limits(void *target, void **start, void **end)
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95 {
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96 if (!flash_info.init) {
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97 return FLASH_ERR_NOT_INIT;
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98 }
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99 *start = flash_info.start;
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100 *end = flash_info.end;
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101 return FLASH_ERR_OK;
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102 }
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103
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104 int
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105 flash_get_block_info(int *block_size, int *blocks)
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106 {
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107 if (!flash_info.init) {
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108 return FLASH_ERR_NOT_INIT;
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109 }
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110 *block_size = flash_info.block_size;
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111 *blocks = flash_info.blocks;
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112 return FLASH_ERR_OK;
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113 }
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114
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115 int
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116 flash_erase(void *addr, int len, void **err_addr)
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117 {
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118 unsigned short *block, *end_addr;
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119 int stat = 0;
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120 extern char flash_erase_block, flash_erase_block_end;
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121 int code_len;
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122 typedef int code_fun(unsigned short *);
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123 code_fun *_flash_erase_block;
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124
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125 if (!flash_info.init) {
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126 return FLASH_ERR_NOT_INIT;
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127 }
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128
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129 // Copy 'erase' code to RAM for execution
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130 code_len = (unsigned long)&flash_erase_block_end - (unsigned long)&flash_erase_block;
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131 _flash_erase_block = (code_fun *)flash_info.work_space;
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132 memcpy(_flash_erase_block, &flash_erase_block, code_len);
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133 HAL_DCACHE_SYNC(); // Should guarantee this code will run
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134 HAL_ICACHE_DISABLE(); // is also required to avoid old contents
115
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135
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136 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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137 end_addr = (unsigned short *)((unsigned long)addr+len);
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138
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139 printf("... Erase from %p-%p: ", block, end_addr);
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140
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141 while (block < end_addr) {
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142 #ifdef RAM_FLASH_DEV_DEBUG
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143 _flash_erase_block = &flash_erase_block;
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144 #endif
115
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145 stat = (*_flash_erase_block)(block);
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146 stat = flash_hwr_map_error(stat);
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147 if (stat) {
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148 *err_addr = (void *)block;
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149 break;
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150 }
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151 block += flash_info.block_size / sizeof(*block);
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152 printf(".");
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153 }
117
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154 HAL_ICACHE_ENABLE();
115
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155 printf("\n");
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156 return (stat);
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157 }
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158
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159 int
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160 flash_program(void *_addr, void *_data, int len, void **err_addr)
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161 {
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162 int stat = 0;
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163 int code_len, size;
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164 extern char flash_program_buf, flash_program_buf_end;
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165 typedef int code_fun(unsigned short *, unsigned short *, int);
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166 code_fun *_flash_program_buf;
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167 unsigned short *addr = (unsigned short *)_addr;
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168 unsigned short *data = (unsigned short *)_data;
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169
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170 if (!flash_info.init) {
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171 return FLASH_ERR_NOT_INIT;
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172 }
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173
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174 // Copy 'program' code to RAM for execution
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175 code_len = (unsigned long)&flash_program_buf_end - (unsigned long)&flash_program_buf;
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176 _flash_program_buf = (code_fun *)flash_info.work_space;
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177 memcpy(_flash_program_buf, &flash_program_buf, code_len);
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178 HAL_DCACHE_SYNC(); // Should guarantee this code will run
117
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179 HAL_ICACHE_DISABLE(); // is also required to avoid old contents
115
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180
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181 printf("... Program from %p-%p at %p: ", data, ((unsigned long)data)+len, addr);
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182
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183 while (len > 0) {
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184 size = len;
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185 if (size > flash_info.block_size) size = flash_info.block_size;
136
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186 #ifdef RAM_FLASH_DEV_DEBUG
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187 _flash_program_buf = &flash_program_buf;
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188 #endif
115
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189 stat = (*_flash_program_buf)(addr, data, size);
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190 stat = flash_hwr_map_error(stat);
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191 if (stat) {
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192 *err_addr = (void *)addr;
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193 break;
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194 }
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195 printf(".");
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196 len -= size;
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197 addr += size/sizeof(*addr);
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198 data += size/sizeof(*data);
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199 }
117
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200 HAL_ICACHE_ENABLE();
115
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201 printf("\n");
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202 return (stat);
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203 }
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204
121
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205 #if 0 < CYGHWR_IO_FLASH_BLOCK_LOCKING // This is an *interface*
119
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206
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207 int
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208 flash_lock(void *addr, int len, void **err_addr)
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209 {
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210 unsigned short *block, *end_addr;
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211 int stat = 0;
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212 extern char flash_lock_block, flash_lock_block_end;
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213 int code_len;
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214 typedef int code_fun(unsigned short *);
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215 code_fun *_flash_lock_block;
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216
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217 if (!flash_info.init) {
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218 return FLASH_ERR_NOT_INIT;
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219 }
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220
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221 // Copy 'lock' code to RAM for execution
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222 code_len = (unsigned long)&flash_lock_block_end - (unsigned long)&flash_lock_block;
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223 _flash_lock_block = (code_fun *)flash_info.work_space;
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224 memcpy(_flash_lock_block, &flash_lock_block, code_len);
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225 HAL_DCACHE_SYNC(); // Should guarantee this code will run
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226 HAL_ICACHE_DISABLE(); // is also required to avoid old contents
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227
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228 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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229 end_addr = (unsigned short *)((unsigned long)addr+len);
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230
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231 printf("... Lock from %p-%p: ", block, end_addr);
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232
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233 while (block < end_addr) {
136
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234 #ifdef RAM_FLASH_DEV_DEBUG
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235 _flash_lock_block = &flash_lock_block;
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236 #endif
119
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237 stat = (*_flash_lock_block)(block);
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238 stat = flash_hwr_map_error(stat);
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239 if (stat) {
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240 *err_addr = (void *)block;
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241 break;
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242 }
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243 block += flash_info.block_size / sizeof(*block);
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244 printf(".");
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245 }
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246 HAL_ICACHE_ENABLE();
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247 printf("\n");
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248 return (stat);
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249 }
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250
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251 int
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252 flash_unlock(void *addr, int len, void **err_addr)
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253 {
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254 unsigned short *block, *end_addr;
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255 int stat = 0;
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256 extern char flash_unlock_block, flash_unlock_block_end;
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257 int code_len;
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258 typedef int code_fun(unsigned short *, int, int);
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259 code_fun *_flash_unlock_block;
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260
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261 if (!flash_info.init) {
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262 return FLASH_ERR_NOT_INIT;
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263 }
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264
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265 // Copy 'lock' code to RAM for execution
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266 code_len = (unsigned long)&flash_unlock_block_end - (unsigned long)&flash_unlock_block;
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267 _flash_unlock_block = (code_fun *)flash_info.work_space;
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268 memcpy(_flash_unlock_block, &flash_unlock_block, code_len);
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269 HAL_DCACHE_SYNC(); // Should guarantee this code will run
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270 HAL_ICACHE_DISABLE(); // is also required to avoid old contents
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271
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272 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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273 end_addr = (unsigned short *)((unsigned long)addr+len);
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274
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275 printf("... Unlock from %p-%p: ", block, end_addr);
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276
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277 while (block < end_addr) {
136
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278 #ifdef RAM_FLASH_DEV_DEBUG
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279 _flash_unlock_block = &flash_unlock_block;
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280 #endif
119
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281 stat = (*_flash_unlock_block)(block, flash_info.block_size, flash_info.blocks);
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282 stat = flash_hwr_map_error(stat);
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283 if (stat) {
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284 *err_addr = (void *)block;
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285 break;
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286 }
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287 block += flash_info.block_size / sizeof(*block);
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288 printf(".");
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289 }
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290 HAL_ICACHE_ENABLE();
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291 printf("\n");
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292 return (stat);
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293 }
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294 #endif
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295
115
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296 char *
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297 flash_errmsg(int err)
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298 {
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299 switch (err) {
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300 case FLASH_ERR_OK:
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301 return "No error - operation complete";
136
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302 case FLASH_ERR_ERASE_SUSPEND:
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303 return "Device is in erase suspend state";
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304 case FLASH_ERR_PROGRAM_SUSPEND:
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305 return "Device is in program suspend state";
115
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306 case FLASH_ERR_INVALID:
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307 return "Invalid FLASH address";
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308 case FLASH_ERR_ERASE:
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309 return "Error trying to erase";
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310 case FLASH_ERR_LOCK:
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311 return "Error trying to lock/unlock";
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312 case FLASH_ERR_PROGRAM:
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313 return "Error trying to program";
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314 case FLASH_ERR_PROTOCOL:
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315 return "Generic error";
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316 case FLASH_ERR_PROTECT:
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317 return "Device/region is write-protected";
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318 case FLASH_ERR_NOT_INIT:
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319 return "FLASH sub-system not initialized";
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320 default:
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321 return "Unknown error";
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322 }
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323 }