Mercurial > flash_v2

annotate packages/devs/flash/arm/edb7xxx/current/src/edb7xxx_flash.c @ 1764:96ec7e534d98

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V2 flash header files clean-up. Eliminate flash_priv.h, moving the functionality into flash_dev.h instead.
author bartv
date Tue, 22 Feb 2005 21:03:43 +0000
parents b83338d7c212
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 //==========================================================================
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2 //
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3 // edb7xxx_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 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
208
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
115
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40 //==========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): gthomas
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44 // Contributors: gthomas
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45 // Date: 2000-07-26
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46 // Purpose:
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47 // Description:
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //==========================================================================
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52
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53 #include <pkgconf/hal.h>
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54 #include <cyg/hal/hal_arch.h>
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55
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56 #include <cyg/io/flash.h>
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57 #include <cyg/io/flash_dev.h>
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58
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59 #include "flash.h"
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60
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61 #define _si(p) ((p[0]<<8)|p[1])
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62
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63 int
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64 flash_hwr_init(void)
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65 {
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66 unsigned short data[4];
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67 int num_regions, region_size;
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68
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69 #if 0
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70 {
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71 volatile int cache_test;
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72 volatile int *cp = 0xE0000000;
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73 // See if the data cache is working
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74 *cp = 0x12345678;
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75 (*flash_info.pf)("ROM cache:\n");
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76 (*flash_info.pf)("cache test = %x\n", *cp);
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77 HAL_DCACHE_INVALIDATE_ALL();
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78 HAL_DCACHE_DISABLE();
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79 (*flash_info.pf)("cache test = %x\n", *cp);
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80 *cp = 0xDEADDEAD;
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81 (*flash_info.pf)("cache test = %x\n", *cp);
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82 HAL_DCACHE_ENABLE();
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83 (*flash_info.pf)("cache test = %x\n", *cp);
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84 cp = 0x00100000;
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85 // See if the data cache is working
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86 *cp = 0x12345678;
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87 (*flash_info.pf)("RAM cache:\n");
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88 (*flash_info.pf)("cache test = %x\n", *cp);
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89 HAL_DCACHE_DISABLE();
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90 (*flash_info.pf)("cache test = %x\n", *cp);
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91 *cp = 0xDEADDEAD;
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92 (*flash_info.pf)("cache test = %x\n", *cp);
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93 HAL_DCACHE_ENABLE();
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94 (*flash_info.pf)("cache test = %x\n", *cp);
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95 }
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96 #endif
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97
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98 flash_dev_query(data);
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99 #if 0
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100 dump_buf(data, sizeof(data));
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101 #endif
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102
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103 #if 0
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104 {
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105 volatile int cache_test;
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106 volatile int *cp = 0xE0000000;
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107 // See if the data cache is working
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108 (*flash_info.pf)("cache test = %x\n", *cp);
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109 *cp = 0x56781234;
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110 (*flash_info.pf)("cache test = %x\n", *cp);
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111 HAL_DCACHE_INVALIDATE_ALL();
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112 HAL_DCACHE_DISABLE();
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113 (*flash_info.pf)("cache test = %x\n", *cp);
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114 *cp = 0xDEADDEAD;
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115 (*flash_info.pf)("cache test = %x\n", *cp);
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116 HAL_DCACHE_ENABLE();
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117 (*flash_info.pf)("cache test = %x\n", *cp);
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118 }
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119 #endif
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120
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121 if (data[0] != FLASH_Intel_code) {
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122 (*flash_info.pf)("Not Intel = %x\n", data[0]);
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123 return FLASH_ERR_HWR;
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124 }
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125
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126 if (data[1] == (unsigned short)0x8897) {
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127 num_regions = 64*2;
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128 region_size = 0x20000;
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129 } else {
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130 (*flash_info.pf)("Unknown device type: %x\n", data[1]);
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131 return FLASH_ERR_HWR;
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132 }
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133
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134 // Hard wired for now
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135 flash_info.block_size = region_size;
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136 flash_info.blocks = num_regions;
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137 flash_info.start = (void *)0xE0000000;
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138 flash_info.end = (void *)(0xE0000000+(num_regions*region_size));
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139 return FLASH_ERR_OK;
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140 }
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141
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142 // Map a hardware status to a package error
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143 int
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144 flash_hwr_map_error(int err)
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145 {
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146 if (err & 0x007E007E) {
162
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147 (*flash_info.pf)("Err = %x\n", err);
115
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148 if (err & 0x00100010) {
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149 return FLASH_ERR_PROGRAM;
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150 } else
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151 if (err & 0x00200020) {
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152 return FLASH_ERR_ERASE;
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153 } else
119
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154 return FLASH_ERR_HWR; // FIXME
115
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155 } else {
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156 return FLASH_ERR_OK;
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157 }
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158 }
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159
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160 // See if a range of FLASH addresses overlaps currently running code
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161 bool
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162 flash_code_overlaps(void *start, void *end)
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163 {
143
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164 extern char _stext[], _etext[];
115
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165
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166 return ((((unsigned long)&_stext >= (unsigned long)start) &&
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167 ((unsigned long)&_stext < (unsigned long)end)) ||
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168 (((unsigned long)&_etext >= (unsigned long)start) &&
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169 ((unsigned long)&_etext < (unsigned long)end)));
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170 }