Mercurial > flash_v2

annotate packages/io/flash/current/src/flash.c @ 1371:e4d78a7a628d

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Remove support for non-RAM drivers (depricated)
author gthomas
date Thu, 20 Nov 2003 14:48:46 +0000
parents 7fb73b26ec8a
children 587b0b1c6927
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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 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 // Copyright (C) 2003 Gary Thomas
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): gthomas
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45 // Contributors: gthomas
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46 // Date: 2000-07-26
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47 // Purpose:
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48 // Description:
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49 //
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50 //####DESCRIPTIONEND####
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51 //
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52 //==========================================================================
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53
119
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54 #include <pkgconf/system.h>
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55 #include <pkgconf/io_flash.h>
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56
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57 #include <cyg/hal/hal_arch.h>
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58 #include <cyg/hal/hal_intr.h>
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59 #include <cyg/hal/hal_cache.h>
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60 #include <string.h>
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61
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62 #define _FLASH_PRIVATE_
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63 #include <cyg/io/flash.h>
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64
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65 // When this flag is set, do not actually jump to the relocated code.
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66 // This can be used for running the function in place (RAM startup only),
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67 // allowing calls to diag_printf() and similar.
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68 #undef RAM_FLASH_DEV_DEBUG
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69 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG)
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70 # warning "Can only enable the flash debugging when configured for RAM startup"
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71 #endif
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72
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73 struct flash_info flash_info;
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74
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75 int
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76 flash_init(void *work_space, int work_space_size, _printf *pf)
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77 {
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78 int err;
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79
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80 if (flash_info.init) return FLASH_ERR_OK;
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81 flash_info.pf = pf; // Do this before calling into the driver
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82 flash_info.work_space = work_space;
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83 flash_info.work_space_size = work_space_size;
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84 if ((err = flash_hwr_init()) != FLASH_ERR_OK) {
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85 return err;
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86 }
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87 flash_info.block_mask = ~(flash_info.block_size-1);
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88 flash_info.init = 1;
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89 return FLASH_ERR_OK;
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90 }
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91
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92 // Use this function to make function pointers anonymous - forcing the
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93 // compiler to use jumps instead of branches when calling driver
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94 // services.
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95 static void* __anonymizer(void* p)
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96 {
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97 return p;
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98 }
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99
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100 // FIXME: Want to change all drivers to use this function. But it may
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101 // make sense to wait till device structure pointer arguments get
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102 // added as well.
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103 void
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104 flash_dev_query(void* data)
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105 {
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106 typedef void code_fun(void*);
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107 code_fun *_flash_query;
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108 int d_cache, i_cache;
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109
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110 externC code_fun flash_query;
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111 _flash_query = (code_fun*) __anonymizer(&flash_query);
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112
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113 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
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114 (*_flash_query)(data);
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115 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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116 }
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117
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118 int
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119 flash_verify_addr(void *target)
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120 {
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121 if (!flash_info.init) {
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122 return FLASH_ERR_NOT_INIT;
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123 }
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124 if (((CYG_ADDRESS)target >= (CYG_ADDRESS)flash_info.start) &&
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125 ((CYG_ADDRESS)target <= ( ((CYG_ADDRESS)flash_info.end) - 1) )) {
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126 return FLASH_ERR_OK;
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127 } else {
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128 return FLASH_ERR_INVALID;
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129 }
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130 }
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131
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132 int
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133 flash_get_limits(void *target, void **start, void **end)
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134 {
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135 if (!flash_info.init) {
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136 return FLASH_ERR_NOT_INIT;
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137 }
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138 *start = flash_info.start;
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139 *end = flash_info.end;
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140 return FLASH_ERR_OK;
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141 }
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142
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143 int
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144 flash_get_block_info(int *block_size, int *blocks)
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145 {
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146 if (!flash_info.init) {
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147 return FLASH_ERR_NOT_INIT;
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148 }
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149 *block_size = flash_info.block_size;
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150 *blocks = flash_info.blocks;
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151 return FLASH_ERR_OK;
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152 }
157
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153
115
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154 int
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155 flash_erase(void *addr, int len, void **err_addr)
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156 {
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157 unsigned short *block, *end_addr;
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158 int stat = 0;
151
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159 typedef int code_fun(unsigned short *, unsigned int);
115
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160 code_fun *_flash_erase_block;
141
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161 int d_cache, i_cache;
115
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162
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163 if (!flash_info.init) {
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164 return FLASH_ERR_NOT_INIT;
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165 }
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166
174
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167 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
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168 if (plf_flash_query_soft_wp(addr,len))
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169 return FLASH_ERR_PROTECT;
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170 #endif
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171
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172 externC code_fun flash_erase_block;
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173 _flash_erase_block = (code_fun*) __anonymizer(&flash_erase_block);
154
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174
174
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175 block = (unsigned short *)((CYG_ADDRESS)addr & flash_info.block_mask);
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176 end_addr = (unsigned short *)((CYG_ADDRESS)addr+len);
115
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177
208
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178 /* Check to see if end_addr overflowed */
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179 if( (end_addr < block) && (len > 0) ){
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180 end_addr = (unsigned short *) ((CYG_ADDRESS) flash_info.end - 1);
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181 }
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182
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183 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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184 (*flash_info.pf)("... Erase from %p-%p: ", (void*)block, (void*)end_addr);
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185 #endif
115
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186
154
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187 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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188 FLASH_Enable(block, end_addr);
115
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189 while (block < end_addr) {
151
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190 // Supply the blocksize for a gross check for erase success
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191 unsigned short *tmp_block;
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192 #if !defined(CYGSEM_IO_FLASH_READ_INDIRECT)
195
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193 int i;
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194 unsigned char *dp;
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195 bool erased = true;
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196
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197 dp = (unsigned char *)block;
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198 for (i = 0; i < flash_info.block_size; i++) {
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199 if (*dp++ != (unsigned char)0xFF) {
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200 erased = false;
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201 break;
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202 }
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203 }
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204 #else
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205 bool erased = false;
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206 #endif
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207
195
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208 if (!erased) {
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209 stat = (*_flash_erase_block)(block, flash_info.block_size);
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210 stat = flash_hwr_map_error(stat);
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211 }
115
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212 if (stat) {
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213 *err_addr = (void *)block;
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214 break;
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215 }
208
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216
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217 // Check to see if block will overflow
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218 tmp_block = block + flash_info.block_size / sizeof(*block);
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219 if(tmp_block < block){
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220 // If block address overflows, set block value to end on this loop
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221 block = end_addr;
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222 }
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223 else{
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224 block = tmp_block;
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225 }
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226 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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227 (*flash_info.pf)(".");
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228 #endif
115
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229 }
156
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230 FLASH_Disable(block, end_addr);
141
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231 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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232 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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233 (*flash_info.pf)("\n");
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234 #endif
115
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235 return (stat);
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236 }
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237
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238 int
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239 flash_program(void *_addr, void *_data, int len, void **err_addr)
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240 {
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241 int stat = 0;
154
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242 int size;
174
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243 typedef int code_fun(void *, void *, int, unsigned long, int);
115
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244 code_fun *_flash_program_buf;
174
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245 unsigned char *addr = (unsigned char *)_addr;
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246 unsigned char *data = (unsigned char *)_data;
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247 CYG_ADDRESS tmp;
141
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248 int d_cache, i_cache;
115
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249
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250 if (!flash_info.init) {
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251 return FLASH_ERR_NOT_INIT;
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252 }
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253
174
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254 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
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255 if (plf_flash_query_soft_wp(addr,len))
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256 return FLASH_ERR_PROTECT;
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257 #endif
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258
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259 externC code_fun flash_program_buf;
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260 _flash_program_buf = (code_fun*) __anonymizer(&flash_program_buf);
154
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261
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262 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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263 (*flash_info.pf)("... Program from %p-%p at %p: ", (void*)data,
174
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264 (void*)(((CYG_ADDRESS)data)+len), (void*)addr);
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265 #endif
154
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266
141
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267 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
174
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268 FLASH_Enable((unsigned short*)addr, (unsigned short *)(addr+len));
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269 while (len > 0) {
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270 size = len;
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271 if (size > flash_info.block_size) size = flash_info.block_size;
154
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272
174
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273 tmp = (CYG_ADDRESS)addr & ~flash_info.block_mask;
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274 if (tmp) {
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275 tmp = flash_info.block_size - tmp;
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276 if (size>tmp) size = tmp;
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277
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278 }
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279
156
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280 stat = (*_flash_program_buf)(addr, data, size,
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281 flash_info.block_mask, flash_info.buffer_size);
115
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282 stat = flash_hwr_map_error(stat);
157
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283 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM
163
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284 if (0 == stat) // Claims to be OK
195
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285 if (memcmp(addr, data, size) != 0) {
163
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286 stat = 0x0BAD;
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287 #ifdef CYGSEM_IO_FLASH_CHATTER
163
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288 (*flash_info.pf)("V");
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289 #endif
163
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290 }
157
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291 #endif
115
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292 if (stat) {
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293 *err_addr = (void *)addr;
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294 break;
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295 }
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296 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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297 (*flash_info.pf)(".");
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298 #endif
115
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299 len -= size;
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300 addr += size/sizeof(*addr);
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301 data += size/sizeof(*data);
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302 }
174
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303 FLASH_Disable((unsigned short*)addr, (unsigned short *)(addr+len));
141
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304 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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305 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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306 (*flash_info.pf)("\n");
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307 #endif
115
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308 return (stat);
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309 }
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310
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311 int
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312 flash_read(void *_addr, void *_data, int len, void **err_addr)
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313 {
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314 #ifdef CYGSEM_IO_FLASH_READ_INDIRECT
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315 int stat = 0;
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316 int size;
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317 typedef int code_fun(void *, void *, int, unsigned long, int);
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318 code_fun *_flash_read_buf;
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319 unsigned char *addr = (unsigned char *)_addr;
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320 unsigned char *data = (unsigned char *)_data;
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321 CYG_ADDRESS tmp;
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322 int d_cache, i_cache;
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323
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324 if (!flash_info.init) {
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325 return FLASH_ERR_NOT_INIT;
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326 }
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327
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328 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
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329 if (plf_flash_query_soft_wp(addr,len))
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330 return FLASH_ERR_PROTECT;
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331 #endif
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332
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333 externC code_fun flash_read_buf;
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334 _flash_read_buf = (code_fun*) __anonymizer(&flash_read_buf);
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335
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336 #ifdef CYGSEM_IO_FLASH_CHATTER
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337 (*flash_info.pf)("... Read from %p-%p at %p: ", (void*)data,
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338 (void*)(((CYG_ADDRESS)data)+len), (void*)addr);
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339 #endif
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340
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341 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
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342 FLASH_Enable((unsigned short*)addr, (unsigned short *)(addr+len));
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343 while (len > 0) {
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344 size = len;
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345 if (size > flash_info.block_size) size = flash_info.block_size;
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346
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347 tmp = (CYG_ADDRESS)addr & ~flash_info.block_mask;
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348 if (tmp) {
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349 tmp = flash_info.block_size - tmp;
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350 if (size>tmp) size = tmp;
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351
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352 }
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353
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354 stat = (*_flash_read_buf)(addr, data, size,
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355 flash_info.block_mask, flash_info.buffer_size);
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356 stat = flash_hwr_map_error(stat);
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357 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM_
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358 if (0 == stat) // Claims to be OK
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359 if (memcmp(addr, data, size) != 0) {
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360 stat = 0x0BAD;
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361 #ifdef CYGSEM_IO_FLASH_CHATTER
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362 (*flash_info.pf)("V");
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363 #endif
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364 }
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365 #endif
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366 if (stat) {
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367 *err_addr = (void *)addr;
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368 break;
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369 }
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370 #ifdef CYGSEM_IO_FLASH_CHATTER
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371 (*flash_info.pf)(".");
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372 #endif
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373 len -= size;
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374 addr += size/sizeof(*addr);
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375 data += size/sizeof(*data);
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376 }
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377 FLASH_Disable((unsigned short*)addr, (unsigned short *)(addr+len));
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378 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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379 #ifdef CYGSEM_IO_FLASH_CHATTER
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380 (*flash_info.pf)("\n");
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381 #endif
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382 return (stat);
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383 #else // CYGSEM_IO_FLASH_READ_INDIRECT
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384 // Direct access to FLASH memory is possible - just move the requested bytes
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385 if (!flash_info.init) {
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386 return FLASH_ERR_NOT_INIT;
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387 }
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388 memcpy(_data, _addr, len);
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389 return FLASH_ERR_OK;
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390 #endif
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391 }
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392
177
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393 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
119
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394
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395 int
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396 flash_lock(void *addr, int len, void **err_addr)
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397 {
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398 unsigned short *block, *end_addr;
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399 int stat = 0;
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400 typedef int code_fun(unsigned short *);
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401 code_fun *_flash_lock_block;
141
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diff changeset
402 int d_cache, i_cache;
119
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diff changeset
403
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404 if (!flash_info.init) {
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405 return FLASH_ERR_NOT_INIT;
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406 }
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diff changeset
407
174
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408 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
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409 if (plf_flash_query_soft_wp(addr,len))
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410 return FLASH_ERR_PROTECT;
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411 #endif
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412
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413 externC code_fun flash_lock_block;
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414 _flash_lock_block = (code_fun*) __anonymizer(&flash_lock_block);
119
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diff changeset
415
174
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416 block = (unsigned short *)((CYG_ADDRESS)addr & flash_info.block_mask);
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417 end_addr = (unsigned short *)((CYG_ADDRESS)addr+len);
119
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diff changeset
418
208
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diff changeset
419 /* Check to see if end_addr overflowed */
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diff changeset
420 if( (end_addr < block) && (len > 0) ){
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421 end_addr = (unsigned short *) ((CYG_ADDRESS) flash_info.end - 1);
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422 }
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diff changeset
423
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diff changeset
424 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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425 (*flash_info.pf)("... Lock from %p-%p: ", block, end_addr);
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diff changeset
426 #endif
119
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diff changeset
427
154
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diff changeset
428 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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429 FLASH_Enable(block, end_addr);
119
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diff changeset
430 while (block < end_addr) {
208
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diff changeset
431 unsigned short *tmp_block;
119
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432 stat = (*_flash_lock_block)(block);
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433 stat = flash_hwr_map_error(stat);
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diff changeset
434 if (stat) {
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435 *err_addr = (void *)block;
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diff changeset
436 break;
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diff changeset
437 }
208
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diff changeset
438
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diff changeset
439 // Check to see if block will overflow
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diff changeset
440 tmp_block = block + flash_info.block_size / sizeof(*block);
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441 if(tmp_block < block){
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diff changeset
442 // If block address overflows, set block value to end on this loop
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443 block = end_addr;
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444 }
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445 else{
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446 block = tmp_block;
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447 }
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448 #ifdef CYGSEM_IO_FLASH_CHATTER
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449 (*flash_info.pf)(".");
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450 #endif
119
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451 }
156
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452 FLASH_Disable(block, end_addr);
141
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453 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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454 #ifdef CYGSEM_IO_FLASH_CHATTER
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455 (*flash_info.pf)("\n");
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456 #endif
119
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457 return (stat);
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diff changeset
458 }
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459
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diff changeset
460 int
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461 flash_unlock(void *addr, int len, void **err_addr)
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462 {
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463 unsigned short *block, *end_addr;
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464 int stat = 0;
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465 typedef int code_fun(unsigned short *, int, int);
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466 code_fun *_flash_unlock_block;
141
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diff changeset
467 int d_cache, i_cache;
119
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diff changeset
468
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469 if (!flash_info.init) {
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470 return FLASH_ERR_NOT_INIT;
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471 }
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472
174
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473 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
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474 if (plf_flash_query_soft_wp(addr,len))
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475 return FLASH_ERR_PROTECT;
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476 #endif
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diff changeset
477
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diff changeset
478 externC code_fun flash_unlock_block;
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479 _flash_unlock_block = (code_fun*) __anonymizer(&flash_unlock_block);
119
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diff changeset
480
174
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481 block = (unsigned short *)((CYG_ADDRESS)addr & flash_info.block_mask);
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482 end_addr = (unsigned short *)((CYG_ADDRESS)addr+len);
119
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diff changeset
483
208
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484 /* Check to see if end_addr overflowed */
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diff changeset
485 if( (end_addr < block) && (len > 0) ){
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486 end_addr = (unsigned short *) ((CYG_ADDRESS) flash_info.end - 1);
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487 }
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488
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489 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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490 (*flash_info.pf)("... Unlock from %p-%p: ", block, end_addr);
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491 #endif
119
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492
154
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493 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
156
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494 FLASH_Enable(block, end_addr);
119
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495 while (block < end_addr) {
208
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diff changeset
496 unsigned short *tmp_block;
119
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497 stat = (*_flash_unlock_block)(block, flash_info.block_size, flash_info.blocks);
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498 stat = flash_hwr_map_error(stat);
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499 if (stat) {
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500 *err_addr = (void *)block;
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501 break;
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502 }
208
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503
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504 tmp_block = block + flash_info.block_size / sizeof(*block);
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505 if(tmp_block < block){
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diff changeset
506 // If block address overflows, set block value to end on this loop
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507 block = end_addr;
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508 }
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509 else{
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510 block = tmp_block;
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511 }
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512 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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513 (*flash_info.pf)(".");
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514 #endif
119
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515 }
156
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diff changeset
516 FLASH_Disable(block, end_addr);
141
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517 HAL_FLASH_CACHES_ON(d_cache, i_cache);
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518 #ifdef CYGSEM_IO_FLASH_CHATTER
162
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519 (*flash_info.pf)("\n");
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520 #endif
119
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521 return (stat);
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522 }
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diff changeset
523 #endif
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diff changeset
524
115
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diff changeset
525 char *
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526 flash_errmsg(int err)
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527 {
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528 switch (err) {
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529 case FLASH_ERR_OK:
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530 return "No error - operation complete";
136
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diff changeset
531 case FLASH_ERR_ERASE_SUSPEND:
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532 return "Device is in erase suspend state";
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diff changeset
533 case FLASH_ERR_PROGRAM_SUSPEND:
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534 return "Device is in program suspend state";
115
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diff changeset
535 case FLASH_ERR_INVALID:
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536 return "Invalid FLASH address";
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parents:
diff changeset
537 case FLASH_ERR_ERASE:
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538 return "Error trying to erase";
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parents:
diff changeset
539 case FLASH_ERR_LOCK:
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540 return "Error trying to lock/unlock";
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diff changeset
541 case FLASH_ERR_PROGRAM:
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diff changeset
542 return "Error trying to program";
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parents:
diff changeset
543 case FLASH_ERR_PROTOCOL:
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diff changeset
544 return "Generic error";
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parents:
diff changeset
545 case FLASH_ERR_PROTECT:
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parents:
diff changeset
546 return "Device/region is write-protected";
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diff changeset
547 case FLASH_ERR_NOT_INIT:
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diff changeset
548 return "FLASH sub-system not initialized";
143
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parents: 141
diff changeset
549 case FLASH_ERR_DRV_VERIFY:
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diff changeset
550 return "Data verify failed after operation";
154
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parents: 151
diff changeset
551 case FLASH_ERR_DRV_TIMEOUT:
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parents: 151
diff changeset
552 return "Driver timed out waiting for device";
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parents: 151
diff changeset
553 case FLASH_ERR_DRV_WRONG_PART:
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parents: 151
diff changeset
554 return "Driver does not support device";
156
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parents: 154
diff changeset
555 case FLASH_ERR_LOW_VOLTAGE:
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parents: 154
diff changeset
556 return "Device reports low voltage";
115
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parents:
diff changeset
557 default:
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diff changeset
558 return "Unknown error";
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parents:
diff changeset
559 }
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diff changeset
560 }
151
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diff changeset
561
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diff changeset
562 // EOF io/flash/..../flash.c