Mercurial > flash_v2

annotate packages/hal/arm/pid/current/src/flash.c @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
parents
children e0c0827131d1
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76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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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 // ARM PID7 eval board FLASH program tool
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 1998-11-18
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37 // Description: Tool used to program onboard FLASH image
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38 //####DESCRIPTIONEND####
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39
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40 //
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41 // This program will program the FLASH on the PID board
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42 //
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43
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44 #include <pkgconf/libc.h> // Configuration header
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45
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46 #include <cyg/kernel/kapi.h>
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47 #include <stdlib.h>
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48 #include <ctype.h>
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49 #include <cyg/infra/testcase.h>
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50 #include <sys/cstartup.h>
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51
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52 #ifndef FALSE
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53 #define FALSE 0
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54 #define TRUE 1
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55 #endif
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56
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57 #define SYNC_COUNT 63
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58
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59 extern void diag_printf(const char *, ...);
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60 int identify_FLASH(void);
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61 void write_sector(int, char *);
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62 bool load_srecords(char (*readc)(), CYG_ADDRESS *start, int *size);
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63
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64 char dbuf[256];
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65 char *raw = (char *)0x10000;
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66 char *flash_buffer = (char *)0x30000;
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67 int pos, len;
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68
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69 // FUNCTIONS
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70
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71 externC void
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72 cyg_package_start( void )
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73 {
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74 #ifdef CYGPKG_LIBC
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75 cyg_iso_c_start();
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76 #else
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77 (void)main(0, NULL);
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78 #endif
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79 } // cyg_package_start()
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80
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81 char nextch(void)
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82 {
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83 return (raw[pos++]);
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84 }
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85
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86 int
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87 main( int argc, char *argv[] )
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88 {
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89 int i, j, size;
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90 CYG_ADDRESS entry;
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91 char c;
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92 diag_printf("FLASH here!\n");
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93 while (identify_FLASH() == 0) {
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94 diag_printf("... Please change FLASH jumper - hit C/R to continue:");
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95 do {
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96 hal_diag_read_char(&c);
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97 } while ((c != '\r') && (c != '\n'));
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98 diag_printf("\n");
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99 }
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100 restart:
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101 diag_printf("Ready file - hit C/R to continue:");
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102 while (TRUE) {
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103 hal_diag_read_char(&c);
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104 if (c == '>') break;
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105 }
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106 i = 0; j = 0;
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107 while (1) {
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108 hal_diag_read_char(&c);
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109 if (c == '!') {
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110 diag_printf("... Reset\n");
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111 goto restart;
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112 }
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113 raw[i++] = c;
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114 if (++j == SYNC_COUNT) {
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115 hal_diag_write_char(c);
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116 j = 0;
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117 }
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118 if (c == ':') break;
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119 }
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120 diag_printf("\n");
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121 pos = 0; len = i;
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122 if (load_srecords(nextch, &entry, &size)) {
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123 diag_printf("Read %x bytes, entry: %x\n", size, entry);
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124 dump_buf(flash_buffer, 128);
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125 diag_printf("\nData loaded - hit '!' to continue:");
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126 while (TRUE) {
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127 hal_diag_read_char(&c);
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128 if (c == '!') break;
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129 }
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130 diag_printf("\n");
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131 diag_printf("...Programming FLASH\n");
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132 pos = 0; i = 0;
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133 while (pos < size) {
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134 write_sector(i++, flash_buffer+pos);
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135 pos += 256;
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136 }
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137 } else {
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138 // Display buffer around failure
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139 dump_buf(&raw[pos-32], 64);
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140 }
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141 diag_printf("All done!\n");
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142 while (1) ;
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143 }
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144
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145 // Adapted from ARM sample code
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146 #define SEQ_ADD1 0x5555
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147 #define SEQ_ADD2 0xAAAA
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148 #define START_CMD1 0xAA
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149 #define START_CMD2 0x55
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150 #define ID_CMD 0x90
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151 #define PROG_CMD 0xA0
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152 #define STOP_CMD 0xF0
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153
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154 #define MAN_ATMEL 0x1F
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155 #define ATMEL_AT29C040_ID 0X5B
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156 #define ATMEL_AT29C040A_ID 0XA4
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157 #define ATMEL_AT29C1024_ID 0X25
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158 #define ATMEL_SECTOR_SIZE 256
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159 #define ATMEL_MAX_SECTORS 2048
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160
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161 int manuf_code, device_code, sector_size, max_no_of_sectors, word_mode;
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162 volatile char *FLASH = (volatile char *)0x04000000;
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163
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164 int
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165 identify_FLASH(void )
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166 {
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167 // Enter Software Product Identification Mode
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168 FLASH[SEQ_ADD1] = START_CMD1;
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169 FLASH[SEQ_ADD2] = START_CMD2;
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170 FLASH[SEQ_ADD1] = ID_CMD;
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171
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172 // Wait at least 10ms
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173 cyg_thread_delay(2);
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174
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175 // Read Manufacturer and device code from the device
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176 manuf_code = FLASH[0];
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177 device_code = FLASH[1];
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178
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179 diag_printf("manuf: %x, device: %x\n", manuf_code, device_code);
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180
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181 // Exit Software Product Identification Mode
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182 FLASH[SEQ_ADD1] = START_CMD1;
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183 FLASH[SEQ_ADD2] = START_CMD2;
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184 FLASH[SEQ_ADD1] = STOP_CMD;
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185
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186 // Wait at least 10ms
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187 cyg_thread_delay(5);
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188
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189 if (manuf_code != MAN_ATMEL) {
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190 diag_printf ( "Error: Wrong Manufaturer: %02x\n",manuf_code );
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191 return (0);
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192 }
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193
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194 switch (device_code) {
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195 case ATMEL_AT29C040A_ID:
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196 diag_printf ("AT29C040A recognised\n");
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197 sector_size = ATMEL_SECTOR_SIZE;
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198 max_no_of_sectors = ATMEL_MAX_SECTORS;
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199 word_mode = FALSE;
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200 break;
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201 case ATMEL_AT29C1024_ID:
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202 diag_printf ("AT29C1024 recognised\n");
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203 sector_size = ATMEL_SECTOR_SIZE;
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204 max_no_of_sectors = ATMEL_MAX_SECTORS;
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205 word_mode = TRUE;
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206 break;
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207 default :
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208 diag_printf ( "Error: Unsupported device: %02x\n", device_code);
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209 return (0);
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210 }
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211 return (1);
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212 }
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213
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214 void
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215 write_sector(int num, char *buf)
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216 {
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217 int i, cnt;
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218 volatile char *wrt = (volatile int *)&FLASH[num*sector_size];
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219
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220 // diag_printf("Writing to %08x\n", wrt);
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221 // Enter Program Mode
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222 FLASH[SEQ_ADD1] = START_CMD1;
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223 FLASH[SEQ_ADD2] = START_CMD2;
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224 FLASH[SEQ_ADD1] = PROG_CMD;
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225
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226 // Note: write bytes as longs regardless of bus width
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227 for (i = 0; i < sector_size; i++) {
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228 wrt[i] = buf[i];
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229 }
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230
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231 // Wait for sector to program
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232 cnt = 0;
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233 i = sector_size - 1;
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234 while (wrt[i] != buf[i]) {
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235 if (cnt++ > 0x01000000) break;
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236 }
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237 // diag_printf("Out - i: %d, wrt[i] = %08X.%08X, buf[i] = %08X, count = %x\n", i, &wrt[i], wrt[i], buf[i], cnt);
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238
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239 // Verify
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240 for (i = 0; i < sector_size; i++) {
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241 for (cnt = 0; cnt < 10; cnt++) {
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242 if (*wrt == *buf) break;
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243 cyg_thread_delay(1);
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244 }
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245 if (cnt == 10) {
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246 diag_printf("Can't program at 0x%08X: %02X not %02X\n", wrt, *wrt, *buf);
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247 }
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248 wrt++; buf++;
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249 }
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250 }
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251
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252 // S-record download code - viciously 'adapted' from "kernel/src/sload/sload.c"
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253
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254 /*---------------------------------------------------------------------------*/
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255 /*
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256 //
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257 // An srecord looks like this:
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258 //
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259 // byte count-+ address
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260 // start ---+ | | data +- checksum
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261 // | | | |
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262 // S01000006F6B692D746573742E73726563E4
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263 // S315000448600000000000000000FC00005900000000E9
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264 // S31A0004000023C1400037DE00F023604000377B009020825000348D
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265 // S30B0004485A0000000000004E
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266 // S70500040000F6
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267 //
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268 // S<type><length><address><data><checksum>
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269 //
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270 // Where
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271 // - length (2 characters)
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272 // is the number of bytes following upto the checksum. Note that
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273 // this is not the number of chars following, since it takes two
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274 // chars to represent a byte.
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275 // - type (2 characters)
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276 // is one of:
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277 // 0) header record
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278 // 1) two byte address data record
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279 // 2) three byte address data record
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280 // 3) four byte address data record
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281 // 5) record containing the number of S1, S2, or S3 records
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282 // 7) four byte address termination record
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283 // 8) three byte address termination record
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284 // 9) two byte address termination record
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285 //
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286 // - address (4, 6, or 8 characters)
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287 // is the start address of the data following, or in the case of
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288 // a termination record, the start address of the image
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289 // - data (0-2n characters)
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290 // is the data.
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291 // - checksum (2 characters)
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292 // is the sum of all the raw byte data in the record, from the length
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293 // upwards, modulo 256 and subtracted from 255.
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294 //
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295 // Useful S-records for testing purposes:
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296 // Start record:
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297 // S00B0000737461303030447563
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298 // This sets the default address to be 0x02005000:
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299 // S31A020050002700801481C4E0B0A15000000100000091D02000018F
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300 // S31A0200501500000001000000010000002700801881C4E2E4A150C1
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301 // S311020080A42407070A090B0A0781050000E1
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302 // Termination record:
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303 // S70502005000A8
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304 //
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305 */
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306
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307 #define S0 0
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308 #define S1 1
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309 #define S2 2
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310 #define S3 3
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311 #define S5 5
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312 #define S7 7
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313 #define S8 8
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314 #define S9 9
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315
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316 /*---------------------------------------------------------------------------*/
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317
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318 int hex2digit(char c)
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319 {
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320 if( c & 0x40 ) c += 9;;
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321 return c &0x0f;
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322
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323 // return ( c <= '9' ? c - '0' :
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324 // c <= 'Z' ? c - 'A' + 10 :
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325 // c - 'a' + 10);
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326 }
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327
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328 /*---------------------------------------------------------------------------*/
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329
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330 bool load_srecords(char (*readc)(),
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331 CYG_ADDRESS *start,
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332 int *size)
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333 {
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334 CYG_ADDRESS addr, load_addr;
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335 int addrsize;
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336 int length;
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337 int i;
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338 cyg_uint8 chksum, ochksum;
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339 cyg_uint8 val;
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340 cyg_uint8 *tdata;
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341 char s;
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342 char type;
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343 char len0;
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344 char len1;
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345 bool first = true;
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346
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347
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348 do {
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349 // Skip whitespace characters until we find something that
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350 // might be an 'S'.
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351 do {
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352 s = readc();
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353 } while( s == '\r' || s == '\n' || s == ' ');
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354
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355 // Check that this is an S record
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356 if( s != 'S' ) {
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357 diag_printf("Invalid 'S' record\n");
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358 return false;
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359 }
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360
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361 // First 4 bytes are standard S + type + len
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362 type = readc();
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363 len0 = readc();
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364 len1 = readc();
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365
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366 // decode the type
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367 type = hex2digit(type);
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368
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369 // determine address size
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370 switch (type) {
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371 case S0: // start records have no address
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372 addrsize = 0;
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373 break;
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374 case S1: // two byte address
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375 case S9:
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376 addrsize = 4;
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377 break;
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378 case S2: // 3 byte address
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379 case S8:
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380 addrsize = 6;
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381 break;
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382 case S3: // 4 byte address
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383 case S7:
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384 addrsize = 8;
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385 break;
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386 }
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387
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388 length = hex2digit (len0) << 4;
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389 length |= hex2digit (len1);
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390 chksum = length;
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391
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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392 // read the address
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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393 addr = 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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394 for (i = 0; i < addrsize; i++) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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395 val = hex2digit(readc());
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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396 addr = (addr << 4) | val;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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397 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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398
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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399 // calculate the checksum, which is done by the byte, not the digit
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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400 for (i = 0; i < addrsize*4; i += 8) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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401 chksum += ((addr >> i) & 0xff);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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402 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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403
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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404 // decide where to load this data
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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405 if (first && (type != S0)) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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406 load_addr = addr;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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407 first = false;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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408 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
409
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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410 // read the data and put it directly into memory where it belongs
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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411 tdata = (cyg_uint8 *)((addr - load_addr) + flash_buffer);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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412 if (type < S7) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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413 *size = (addr - load_addr);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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414 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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415 val = 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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416 for (i = 0; i < ((length - 1) * 2) - addrsize; i += 2 ) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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417 val = hex2digit (readc()) << 4;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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418 val |= hex2digit (readc());
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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419 chksum += val;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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420 if( type != S0 ) *tdata++ = val;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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421 if (type < S7) *size = *size + 1;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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422 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
423
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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424 // now get the old checksum
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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425 ochksum = hex2digit(readc()) << 4;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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426 ochksum |= hex2digit(readc());
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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427 chksum = ~chksum;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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428 if (chksum != ochksum) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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429 diag_printf("Bad checksum - addr: %x\n", addr);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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430 return false;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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431 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
432
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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433 } while( type < S7 );
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
434
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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435 *start = addr;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
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436 return true;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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437 }