Mercurial > flash_v2

annotate packages/io/flash/current/src/flash.c @ 143:6b5f480c6929 ecos-sw-2000-12-08

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Merge from eCos master repository on 2000-12-08-02:09:36-GMT
author jlarmour
date Fri, 08 Dec 2000 03:30:06 +0000
parents 450e4e1f1e80
children 25e238959bae
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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
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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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55 // When this flag is set, do not actually jump to the relocated code.
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56 // This can be used for running the function in place (RAM startup only),
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57 // allowing calls to diag_printf() and similar.
136
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58 #undef RAM_FLASH_DEV_DEBUG
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59 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG)
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60 # warning "Can only enable the flash debugging when configured for RAM startup"
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61 # undef RAM_FLASH_DEV_DEBUG
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62 #endif
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63
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64 struct flash_info flash_info;
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65
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66 int
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67 flash_init(void *work_space, int work_space_size)
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68 {
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69 int err;
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70
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71 if (flash_info.init) return FLASH_ERR_OK;
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72 flash_info.work_space = work_space;
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73 flash_info.work_space_size = work_space_size;
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74 if ((err = flash_hwr_init()) != FLASH_ERR_OK) {
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75 return err;
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76 }
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77 flash_info.block_mask = ~(flash_info.block_size-1);
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78 flash_info.init = 1;
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79 return FLASH_ERR_OK;
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80 }
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81
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82 // FIXME: Want to change all drivers to use this function. But it may
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83 // make sense to wait till device structure pointer arguments get
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84 // added as well.
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85 void
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86 flash_dev_query(void* data)
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87 {
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88 extern char flash_query[], flash_query_end[];
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89 typedef void code_fun(void*);
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90 int code_len;
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91 code_fun *_flash_query;
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92 int d_cache, i_cache;
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93 void* flash_id;
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94
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95 // Query the device driver - copy 'query' code to RAM for execution
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96 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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97 _flash_query = (code_fun *)flash_info.work_space;
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98 memcpy(_flash_query, &flash_query, code_len);
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99
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100 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
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101 #ifdef RAM_FLASH_DEV_DEBUG
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102 _flash_query = &flash_query;
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103 #endif
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104 (*_flash_query)(data);
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105 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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106 }
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107
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108 int
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109 flash_verify_addr(void *target)
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110 {
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111 if (!flash_info.init) {
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112 return FLASH_ERR_NOT_INIT;
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113 }
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114 if (((unsigned long)target >= (unsigned long)flash_info.start) &&
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115 ((unsigned long)target < (unsigned long)flash_info.end)) {
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116 return FLASH_ERR_OK;
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117 } else {
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118 return FLASH_ERR_INVALID;
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119 }
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120 }
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121
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122 int
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123 flash_get_limits(void *target, void **start, void **end)
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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 *start = flash_info.start;
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129 *end = flash_info.end;
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130 return FLASH_ERR_OK;
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131 }
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132
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133 int
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134 flash_get_block_info(int *block_size, int *blocks)
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135 {
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136 if (!flash_info.init) {
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137 return FLASH_ERR_NOT_INIT;
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138 }
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139 *block_size = flash_info.block_size;
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140 *blocks = flash_info.blocks;
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141 return FLASH_ERR_OK;
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142 }
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143 int
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144 flash_erase(void *addr, int len, void **err_addr)
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145 {
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146 unsigned short *block, *end_addr;
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147 int stat = 0;
143
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148 extern char flash_erase_block[], flash_erase_block_end[];
115
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149 int code_len;
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150 typedef int code_fun(unsigned short *);
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151 code_fun *_flash_erase_block;
141
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152 int d_cache, i_cache;
115
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153
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154 if (!flash_info.init) {
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155 return FLASH_ERR_NOT_INIT;
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156 }
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157
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158 // Copy 'erase' code to RAM for execution
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159 code_len = (unsigned long)&flash_erase_block_end - (unsigned long)&flash_erase_block;
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160 _flash_erase_block = (code_fun *)flash_info.work_space;
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161 memcpy(_flash_erase_block, &flash_erase_block, code_len);
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162
141
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163 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
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164 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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165 end_addr = (unsigned short *)((unsigned long)addr+len);
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166
143
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167 printf("... Erase from %p-%p: ", (void*)block, (void*)end_addr);
115
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168
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169 while (block < end_addr) {
136
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170 #ifdef RAM_FLASH_DEV_DEBUG
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171 _flash_erase_block = &flash_erase_block;
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172 #endif
115
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173 stat = (*_flash_erase_block)(block);
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174 stat = flash_hwr_map_error(stat);
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175 if (stat) {
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176 *err_addr = (void *)block;
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177 break;
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178 }
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179 block += flash_info.block_size / sizeof(*block);
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180 printf(".");
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181 }
141
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182 HAL_FLASH_CACHES_ON(d_cache, i_cache);
115
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183 printf("\n");
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184 return (stat);
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185 }
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186
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187 int
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188 flash_program(void *_addr, void *_data, int len, void **err_addr)
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189 {
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190 int stat = 0;
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191 int code_len, size;
143
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192 extern char flash_program_buf[], flash_program_buf_end[];
115
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193 typedef int code_fun(unsigned short *, unsigned short *, int);
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194 code_fun *_flash_program_buf;
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195 unsigned short *addr = (unsigned short *)_addr;
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196 unsigned short *data = (unsigned short *)_data;
141
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197 int d_cache, i_cache;
115
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198
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199 if (!flash_info.init) {
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200 return FLASH_ERR_NOT_INIT;
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201 }
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202
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203 // Copy 'program' code to RAM for execution
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204 code_len = (unsigned long)&flash_program_buf_end - (unsigned long)&flash_program_buf;
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205 _flash_program_buf = (code_fun *)flash_info.work_space;
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206 memcpy(_flash_program_buf, &flash_program_buf, code_len);
141
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207 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
115
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208
143
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209 printf("... Program from %p-%p at %p: ", (void*)data, (void*)(((unsigned long)data)+len), (void*)addr);
115
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210
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211 while (len > 0) {
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212 size = len;
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213 if (size > flash_info.block_size) size = flash_info.block_size;
136
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214 #ifdef RAM_FLASH_DEV_DEBUG
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215 _flash_program_buf = &flash_program_buf;
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216 #endif
115
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217 stat = (*_flash_program_buf)(addr, data, size);
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218 stat = flash_hwr_map_error(stat);
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219 if (stat) {
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220 *err_addr = (void *)addr;
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221 break;
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222 }
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223 printf(".");
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224 len -= size;
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225 addr += size/sizeof(*addr);
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226 data += size/sizeof(*data);
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227 }
141
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228 HAL_FLASH_CACHES_ON(d_cache, i_cache);
115
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229 printf("\n");
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230 return (stat);
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231 }
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232
121
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233 #if 0 < CYGHWR_IO_FLASH_BLOCK_LOCKING // This is an *interface*
119
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234
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235 int
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236 flash_lock(void *addr, int len, void **err_addr)
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237 {
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238 unsigned short *block, *end_addr;
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239 int stat = 0;
143
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240 extern char flash_lock_block[], flash_lock_block_end[];
119
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241 int code_len;
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242 typedef int code_fun(unsigned short *);
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243 code_fun *_flash_lock_block;
141
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244 int d_cache, i_cache;
119
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245
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246 if (!flash_info.init) {
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247 return FLASH_ERR_NOT_INIT;
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248 }
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249
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250 // Copy 'lock' code to RAM for execution
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251 code_len = (unsigned long)&flash_lock_block_end - (unsigned long)&flash_lock_block;
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252 _flash_lock_block = (code_fun *)flash_info.work_space;
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253 memcpy(_flash_lock_block, &flash_lock_block, code_len);
141
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254 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
119
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255
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256 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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257 end_addr = (unsigned short *)((unsigned long)addr+len);
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258
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259 printf("... Lock from %p-%p: ", block, end_addr);
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260
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261 while (block < end_addr) {
136
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262 #ifdef RAM_FLASH_DEV_DEBUG
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263 _flash_lock_block = &flash_lock_block;
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264 #endif
119
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265 stat = (*_flash_lock_block)(block);
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266 stat = flash_hwr_map_error(stat);
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267 if (stat) {
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268 *err_addr = (void *)block;
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269 break;
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270 }
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271 block += flash_info.block_size / sizeof(*block);
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272 printf(".");
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273 }
141
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274 HAL_FLASH_CACHES_ON(d_cache, i_cache);
119
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275 printf("\n");
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276 return (stat);
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277 }
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278
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279 int
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280 flash_unlock(void *addr, int len, void **err_addr)
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281 {
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282 unsigned short *block, *end_addr;
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283 int stat = 0;
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284 extern char flash_unlock_block[], flash_unlock_block_end[];
119
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285 int code_len;
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286 typedef int code_fun(unsigned short *, int, int);
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287 code_fun *_flash_unlock_block;
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288 int d_cache, i_cache;
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289
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290 if (!flash_info.init) {
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291 return FLASH_ERR_NOT_INIT;
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292 }
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293
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294 // Copy 'lock' code to RAM for execution
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295 code_len = (unsigned long)&flash_unlock_block_end - (unsigned long)&flash_unlock_block;
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296 _flash_unlock_block = (code_fun *)flash_info.work_space;
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297 memcpy(_flash_unlock_block, &flash_unlock_block, code_len);
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298 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
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299
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300 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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301 end_addr = (unsigned short *)((unsigned long)addr+len);
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302
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303 printf("... Unlock from %p-%p: ", block, end_addr);
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304
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305 while (block < end_addr) {
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306 #ifdef RAM_FLASH_DEV_DEBUG
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307 _flash_unlock_block = &flash_unlock_block;
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308 #endif
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309 stat = (*_flash_unlock_block)(block, flash_info.block_size, flash_info.blocks);
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310 stat = flash_hwr_map_error(stat);
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311 if (stat) {
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312 *err_addr = (void *)block;
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313 break;
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314 }
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315 block += flash_info.block_size / sizeof(*block);
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316 printf(".");
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317 }
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318 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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319 printf("\n");
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320 return (stat);
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321 }
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322 #endif
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323
115
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324 char *
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325 flash_errmsg(int err)
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326 {
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327 switch (err) {
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328 case FLASH_ERR_OK:
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329 return "No error - operation complete";
136
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330 case FLASH_ERR_ERASE_SUSPEND:
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331 return "Device is in erase suspend state";
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332 case FLASH_ERR_PROGRAM_SUSPEND:
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333 return "Device is in program suspend state";
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334 case FLASH_ERR_INVALID:
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335 return "Invalid FLASH address";
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336 case FLASH_ERR_ERASE:
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337 return "Error trying to erase";
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338 case FLASH_ERR_LOCK:
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339 return "Error trying to lock/unlock";
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340 case FLASH_ERR_PROGRAM:
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341 return "Error trying to program";
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342 case FLASH_ERR_PROTOCOL:
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343 return "Generic error";
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344 case FLASH_ERR_PROTECT:
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345 return "Device/region is write-protected";
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346 case FLASH_ERR_NOT_INIT:
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347 return "FLASH sub-system not initialized";
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348 case FLASH_ERR_DRV_VERIFY:
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349 return "Data verify failed after operation";
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350 default:
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351 return "Unknown error";
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352 }
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353 }