Mercurial > flash_v2

annotate packages/io/flash/current/src/flash.c @ 156:b939e9cada46

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Merge from eCos master repository on 2001-03-29-21:44:39-BST
author jlarmour
date Fri, 06 Apr 2001 17:20:13 +0000
parents e2d866e32dac
children b65ec671dd4c
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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, 2001 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.
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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 CYGHWR_IO_FLASH_DEVICE_IN_RAM
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62 # define CYGHWR_IO_FLASH_DEVICE_IN_RAM 1
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63 #endif
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64
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65 struct flash_info flash_info;
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66
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67 int
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68 flash_init(void *work_space, int work_space_size)
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69 {
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70 int err;
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71
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72 if (flash_info.init) return FLASH_ERR_OK;
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73 flash_info.work_space = work_space;
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74 flash_info.work_space_size = work_space_size;
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75 if ((err = flash_hwr_init()) != FLASH_ERR_OK) {
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76 return err;
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77 }
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78 flash_info.block_mask = ~(flash_info.block_size-1);
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79 flash_info.init = 1;
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80 return FLASH_ERR_OK;
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81 }
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82
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83 #ifdef CYGHWR_IO_FLASH_DEVICE_IN_RAM
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84 // Use this function to make function pointers anonymous - forcing the
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85 // compiler to use jumps instead of branches when calling driver
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86 // services.
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87 static void* __anonymizer(void* p)
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88 {
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89 return p;
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90 }
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91 #endif
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92
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93 // FIXME: Want to change all drivers to use this function. But it may
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94 // make sense to wait till device structure pointer arguments get
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95 // added as well.
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96 void
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97 flash_dev_query(void* data)
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98 {
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99 typedef void code_fun(void*);
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100 code_fun *_flash_query;
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101 int d_cache, i_cache;
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102
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103 #ifdef CYGHWR_IO_FLASH_DEVICE_IN_RAM
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104 {
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105 externC code_fun flash_query;
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106 _flash_query = (code_fun*) __anonymizer(&flash_query);
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107 }
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108 #else
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109 {
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110 extern char flash_query[], flash_query_end[];
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111 int code_len;
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112
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113 // Query the device driver - copy 'query' code to RAM for execution
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114 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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115 _flash_query = (code_fun *)flash_info.work_space;
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116 memcpy(_flash_query, &flash_query, code_len);
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117 }
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118 #endif
143
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119
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120 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
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121 (*_flash_query)(data);
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122 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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123 }
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124
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125 int
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126 flash_verify_addr(void *target)
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127 {
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128 if (!flash_info.init) {
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129 return FLASH_ERR_NOT_INIT;
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130 }
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131 if (((unsigned long)target >= (unsigned long)flash_info.start) &&
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132 ((unsigned long)target < (unsigned long)flash_info.end)) {
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133 return FLASH_ERR_OK;
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134 } else {
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135 return FLASH_ERR_INVALID;
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136 }
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137 }
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138
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139 int
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140 flash_get_limits(void *target, void **start, void **end)
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141 {
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142 if (!flash_info.init) {
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143 return FLASH_ERR_NOT_INIT;
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144 }
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145 *start = flash_info.start;
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146 *end = flash_info.end;
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147 return FLASH_ERR_OK;
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148 }
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149
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150 int
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151 flash_get_block_info(int *block_size, int *blocks)
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152 {
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153 if (!flash_info.init) {
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154 return FLASH_ERR_NOT_INIT;
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155 }
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156 *block_size = flash_info.block_size;
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157 *blocks = flash_info.blocks;
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158 return FLASH_ERR_OK;
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159 }
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160 int
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161 flash_erase(void *addr, int len, void **err_addr)
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162 {
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163 unsigned short *block, *end_addr;
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164 int stat = 0;
151
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165 typedef int code_fun(unsigned short *, unsigned int);
115
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166 code_fun *_flash_erase_block;
141
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167 int d_cache, i_cache;
115
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168
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169 if (!flash_info.init) {
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170 return FLASH_ERR_NOT_INIT;
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171 }
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172
154
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173 #ifdef CYGHWR_IO_FLASH_DEVICE_IN_RAM
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174 {
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175 externC code_fun flash_erase_block;
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176 _flash_erase_block = (code_fun*) __anonymizer(&flash_erase_block);
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177 }
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178 #else
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179 {
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180 extern char flash_erase_block[], flash_erase_block_end[];
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181 int code_len;
115
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182
154
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183 // Copy 'erase' code to RAM for execution
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184 code_len = (unsigned long)&flash_erase_block_end - (unsigned long)&flash_erase_block;
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185 _flash_erase_block = (code_fun *)flash_info.work_space;
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186 memcpy(_flash_erase_block, &flash_erase_block, code_len);
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187 }
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188 #endif
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189
115
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190 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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191 end_addr = (unsigned short *)((unsigned long)addr+len);
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192
143
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193 printf("... Erase from %p-%p: ", (void*)block, (void*)end_addr);
115
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194
154
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195 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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196 FLASH_Enable(block, end_addr);
115
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197 while (block < end_addr) {
151
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198 // Supply the blocksize for a gross check for erase success
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199 stat = (*_flash_erase_block)(block, flash_info.block_size);
115
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200 stat = flash_hwr_map_error(stat);
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201 if (stat) {
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202 *err_addr = (void *)block;
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203 break;
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204 }
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205 block += flash_info.block_size / sizeof(*block);
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206 printf(".");
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207 }
156
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208 FLASH_Disable(block, end_addr);
141
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209 HAL_FLASH_CACHES_ON(d_cache, i_cache);
115
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210 printf("\n");
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211 return (stat);
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212 }
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213
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214 int
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215 flash_program(void *_addr, void *_data, int len, void **err_addr)
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216 {
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217 int stat = 0;
154
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218 int size;
156
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219 typedef int code_fun(unsigned short *, unsigned short *, int, unsigned long, int);
115
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220 code_fun *_flash_program_buf;
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221 unsigned short *addr = (unsigned short *)_addr;
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222 unsigned short *data = (unsigned short *)_data;
141
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223 int d_cache, i_cache;
115
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224
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225 if (!flash_info.init) {
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226 return FLASH_ERR_NOT_INIT;
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227 }
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228
154
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229 #ifdef CYGHWR_IO_FLASH_DEVICE_IN_RAM
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230 {
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231 externC code_fun flash_program_buf;
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232 _flash_program_buf = (code_fun*) __anonymizer(&flash_program_buf);
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233 }
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234 #else
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235 {
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236 int code_len;
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237 extern char flash_program_buf[], flash_program_buf_end[];
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238 // Copy 'program' code to RAM for execution
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239 code_len = (unsigned long)&flash_program_buf_end - (unsigned long)&flash_program_buf;
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240 _flash_program_buf = (code_fun *)flash_info.work_space;
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241 memcpy(_flash_program_buf, &flash_program_buf, code_len);
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242 }
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243 #endif
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244
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245 printf("... Program from %p-%p at %p: ", (void*)data,
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246 (void*)(((unsigned long)data)+len), (void*)addr);
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247
141
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248 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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249 FLASH_Enable(addr, addr+len);
115
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250 while (len > 0) {
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251 size = len;
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252 if (size > flash_info.block_size) size = flash_info.block_size;
154
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253
156
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254 stat = (*_flash_program_buf)(addr, data, size,
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255 flash_info.block_mask, flash_info.buffer_size);
115
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256 stat = flash_hwr_map_error(stat);
156
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257 if (memcmp(addr, data, size) != 0) {
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258 stat = 0x0BAD;
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259 printf("V");
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260 }
115
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261 if (stat) {
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262 *err_addr = (void *)addr;
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263 break;
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264 }
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265 printf(".");
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266 len -= size;
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267 addr += size/sizeof(*addr);
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268 data += size/sizeof(*data);
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269 }
156
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270 FLASH_Disable(addr, addr+len);
141
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271 HAL_FLASH_CACHES_ON(d_cache, i_cache);
115
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272 printf("\n");
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273 return (stat);
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274 }
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275
121
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276 #if 0 < CYGHWR_IO_FLASH_BLOCK_LOCKING // This is an *interface*
119
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277
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278 int
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279 flash_lock(void *addr, int len, void **err_addr)
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280 {
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281 unsigned short *block, *end_addr;
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282 int stat = 0;
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283 typedef int code_fun(unsigned short *);
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284 code_fun *_flash_lock_block;
141
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285 int d_cache, i_cache;
119
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286
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287 if (!flash_info.init) {
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288 return FLASH_ERR_NOT_INIT;
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289 }
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290
154
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291 #ifdef CYGHWR_IO_FLASH_DEVICE_IN_RAM
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292 {
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293 externC code_fun flash_lock_block;
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294 _flash_lock_block = (code_fun*) __anonymizer(&flash_lock_block);
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295 }
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296 #else
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297 {
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298 extern char flash_lock_block[], flash_lock_block_end[];
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299 int code_len;
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300 // Copy 'lock' code to RAM for execution
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301 code_len = (unsigned long)&flash_lock_block_end - (unsigned long)&flash_lock_block;
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302 _flash_lock_block = (code_fun *)flash_info.work_space;
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303 memcpy(_flash_lock_block, &flash_lock_block, code_len);
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304 }
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305 #endif
119
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306
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307 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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308 end_addr = (unsigned short *)((unsigned long)addr+len);
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309
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310 printf("... Lock from %p-%p: ", block, end_addr);
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311
154
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312 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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313 FLASH_Enable(block, end_addr);
119
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314 while (block < end_addr) {
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315 stat = (*_flash_lock_block)(block);
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316 stat = flash_hwr_map_error(stat);
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317 if (stat) {
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318 *err_addr = (void *)block;
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319 break;
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320 }
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321 block += flash_info.block_size / sizeof(*block);
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322 printf(".");
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323 }
156
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324 FLASH_Disable(block, end_addr);
141
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325 HAL_FLASH_CACHES_ON(d_cache, i_cache);
119
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326 printf("\n");
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327 return (stat);
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328 }
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329
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330 int
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331 flash_unlock(void *addr, int len, void **err_addr)
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332 {
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333 unsigned short *block, *end_addr;
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334 int stat = 0;
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335 typedef int code_fun(unsigned short *, int, int);
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336 code_fun *_flash_unlock_block;
141
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337 int d_cache, i_cache;
119
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338
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339 if (!flash_info.init) {
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340 return FLASH_ERR_NOT_INIT;
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341 }
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342
154
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343 #ifdef CYGHWR_IO_FLASH_DEVICE_IN_RAM
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344 {
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345 externC code_fun flash_unlock_block;
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346 _flash_unlock_block = (code_fun*) __anonymizer(&flash_unlock_block);
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347 }
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348 #else
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349 {
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350 extern char flash_unlock_block[], flash_unlock_block_end[];
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351 int code_len;
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352 // Copy 'lock' code to RAM for execution
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353 code_len = (unsigned long)&flash_unlock_block_end - (unsigned long)&flash_unlock_block;
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354 _flash_unlock_block = (code_fun *)flash_info.work_space;
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355 memcpy(_flash_unlock_block, &flash_unlock_block, code_len);
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356 }
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357 #endif
119
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358
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359 block = (unsigned short *)((unsigned long)addr & flash_info.block_mask);
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360 end_addr = (unsigned short *)((unsigned long)addr+len);
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361
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362 printf("... Unlock from %p-%p: ", block, end_addr);
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363
154
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364 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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365 FLASH_Enable(block, end_addr);
119
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366 while (block < end_addr) {
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367 stat = (*_flash_unlock_block)(block, flash_info.block_size, flash_info.blocks);
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368 stat = flash_hwr_map_error(stat);
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369 if (stat) {
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370 *err_addr = (void *)block;
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371 break;
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372 }
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373 block += flash_info.block_size / sizeof(*block);
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374 printf(".");
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375 }
156
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376 FLASH_Disable(block, end_addr);
141
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377 HAL_FLASH_CACHES_ON(d_cache, i_cache);
119
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378 printf("\n");
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379 return (stat);
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380 }
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381 #endif
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382
115
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383 char *
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384 flash_errmsg(int err)
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385 {
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386 switch (err) {
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387 case FLASH_ERR_OK:
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388 return "No error - operation complete";
136
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389 case FLASH_ERR_ERASE_SUSPEND:
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390 return "Device is in erase suspend state";
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391 case FLASH_ERR_PROGRAM_SUSPEND:
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392 return "Device is in program suspend state";
115
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393 case FLASH_ERR_INVALID:
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394 return "Invalid FLASH address";
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395 case FLASH_ERR_ERASE:
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396 return "Error trying to erase";
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397 case FLASH_ERR_LOCK:
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398 return "Error trying to lock/unlock";
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399 case FLASH_ERR_PROGRAM:
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400 return "Error trying to program";
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401 case FLASH_ERR_PROTOCOL:
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402 return "Generic error";
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403 case FLASH_ERR_PROTECT:
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404 return "Device/region is write-protected";
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405 case FLASH_ERR_NOT_INIT:
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406 return "FLASH sub-system not initialized";
143
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407 case FLASH_ERR_DRV_VERIFY:
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408 return "Data verify failed after operation";
154
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409 case FLASH_ERR_DRV_TIMEOUT:
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410 return "Driver timed out waiting for device";
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411 case FLASH_ERR_DRV_WRONG_PART:
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412 return "Driver does not support device";
156
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413 case FLASH_ERR_LOW_VOLTAGE:
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414 return "Device reports low voltage";
115
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415 default:
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416 return "Unknown error";
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417 }
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418 }
151
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419
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420 // EOF io/flash/..../flash.c