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annotate packages/devs/flash/intel/bootblock/current/src/bootblock_flash.c @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 2395031e7a66
children d2c90368aeef
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1 //==========================================================================
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2 //
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3 // bootblock_flash.c
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4 //
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5 // Flash programming
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6 //
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7 //==========================================================================
208
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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
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
136
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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, jskov
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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 #include <cyg/hal/hal_cache.h>
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56
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57 #define _FLASH_PRIVATE_
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58 #include <cyg/io/flash.h>
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59
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60 #include "flash.h"
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61
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62 #define _si(p) ((p[0]<<8)|p[1])
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63
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64 #define DEBUG 0
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65
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66 int
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67 flash_hwr_init(void)
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68 {
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69 unsigned short data[4];
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70 extern char flash_query, flash_query_end;
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71 typedef int code_fun(unsigned char *);
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72 code_fun *_flash_query;
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73 int code_len, stat, num_regions, region_size;
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74
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75 // Copy 'program' code to RAM for execution
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76 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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77 _flash_query = (code_fun *)flash_info.work_space;
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78 memcpy(_flash_query, &flash_query, code_len);
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79 HAL_DCACHE_SYNC(); // Should guarantee this code will run
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80 HAL_ICACHE_INVALIDATE_ALL(); // is also required to avoid old contents
136
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81 stat = (*_flash_query)(data);
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82 #if DEBUG
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83 (*flash_info.pf)("stat = %x\n", stat);
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84 dump_buf(data, sizeof(data));
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85 #endif
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86
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87 if (data[0] != FLASH_Intel_code) {
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88 (*flash_info.pf)("Not Intel = %x\n", data[0]);
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89 return FLASH_ERR_HWR;
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90 }
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91
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92 // FIXME: More devices, comments, etc
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93 if (data[1] == (unsigned short)0x8897) {
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94 num_regions = 64*2;
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95 region_size = 0x20000;
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96 } else if (data[1] == (unsigned short)0x88f4) {
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97 num_regions = 32; // (only use one for now)*4; // 4 devices in serial, each having 32 regions
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98 region_size = 0x10000;
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99 } else {
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100 (*flash_info.pf)("Unknown device type: %x\n", data[1]);
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101 return FLASH_ERR_HWR;
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102 }
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103
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104 // Hard wired for now FIXME
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105 flash_info.block_size = region_size;
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106 flash_info.blocks = num_regions;
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107 #if 0 // This should be used only for the gross XX firmware build
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108 flash_info.start = (void *)0;
136
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109 flash_info.end = (void *)(0x10000000+(num_regions*region_size));
138
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110 #else
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111 flash_info.start = (void *)0x50000000;
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112 flash_info.end = (void *)(0x50000000+(num_regions*region_size));
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113 #endif
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114
136
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115 return FLASH_ERR_OK;
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116 }
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117
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118 // Map a hardware status to a package error
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119 int
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120 flash_hwr_map_error(int err)
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121 {
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122 if (err & 0x007E007E) {
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123 (*flash_info.pf)("Err = %x\n", err);
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124 if (err & 0x00400040) {
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125 return FLASH_ERR_ERASE_SUSPEND;
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126 } else
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127 if (err & 0x00040004) {
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128 return FLASH_ERR_PROGRAM_SUSPEND;
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129 } else
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130 if (err & 0x00020002) {
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131 return FLASH_ERR_PROTECT;
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132 } else
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133 if (err & 0x00100010) {
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134 return FLASH_ERR_PROGRAM;
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135 } else
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136 if (err & 0x00200020) {
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137 return FLASH_ERR_ERASE;
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138 } else
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139 return FLASH_ERR_HWR; // FIXME
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140 } else {
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141 return FLASH_ERR_OK;
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142 }
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143 }
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144
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145 // See if a range of FLASH addresses overlaps currently running code
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146 bool
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147 flash_code_overlaps(void *start, void *end)
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148 {
143
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149 extern char _stext[], _etext[];
136
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150
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151 return ((((unsigned long)&_stext >= (unsigned long)start) &&
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152 ((unsigned long)&_stext < (unsigned long)end)) ||
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153 (((unsigned long)&_etext >= (unsigned long)start) &&
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154 ((unsigned long)&_etext < (unsigned long)end)));
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155 }