Mercurial > flash_v2

annotate packages/hal/arm/pid/current/src/prog_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
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children e0c0827131d1
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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 // prog_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 // It is similar to 'flash' (which also downloads S records) but it always
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43 // programs from a fixed buffer. This is sufficient to load/update the GDB
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44 // stubs on the board.
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45 //
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46
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47 #include <pkgconf/libc.h> // Configuration header
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48
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49 #include <cyg/kernel/kapi.h>
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50 #include <stdlib.h>
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51 #include <ctype.h>
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52 #include <cyg/infra/testcase.h>
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53 #include <sys/cstartup.h>
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54
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55 #ifndef FALSE
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56 #define FALSE 0
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57 #define TRUE 1
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58 #endif
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59
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60 extern void diag_printf(const char *, ...);
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61 int identify_FLASH(void);
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62 void write_sector(int, char *);
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63
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64 char *flash_buffer = (char *)0x60000;
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65 char *flash_buffer_end = (char *)0x80000;
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66
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67 #ifdef BE_IMAGE
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68 #define BUF(x) buf[x^3]
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69 #else
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70 #define BUF(x) buf[x]
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71 #endif
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72
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73 // FUNCTIONS
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74
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75 externC void
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76 cyg_package_start( void )
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77 {
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78 #ifdef CYGPKG_LIBC
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79 cyg_iso_c_start();
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80 #else
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81 (void)main(0, NULL);
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82 #endif
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83 } // cyg_package_start()
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84
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85 int
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86 main( int argc, char *argv[] )
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87 {
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88 int i;
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89
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90 diag_printf("FLASH here!\n");
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91 while (identify_FLASH() == 0) {
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92 diag_printf("... Please change FLASH jumper\n");
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93 cyg_thread_delay(5*100);
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94 }
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95 diag_printf("About to program FLASH using data at %x..%x\n", flash_buffer, flash_buffer_end);
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96 diag_printf("*** Press RESET now to abort!\n");
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97 cyg_thread_delay(5*100);
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98 diag_printf("\n");
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99 diag_printf("...Programming FLASH\n");
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100
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101 i = 0;
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102 while (flash_buffer < flash_buffer_end) {
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103 write_sector(i++, flash_buffer);
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104 flash_buffer += 256;
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105 }
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106 diag_printf("All done!\n");
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107 while (1) ;
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108 }
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109
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110 // Adapted from ARM sample code
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111 #define SEQ_ADD1 0x5555
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112 #define SEQ_ADD2 0xAAAA
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113 #define START_CMD1 0xAA
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114 #define START_CMD2 0x55
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115 #define ID_CMD 0x90
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116 #define PROG_CMD 0xA0
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117 #define STOP_CMD 0xF0
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118
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119 #define MAN_ATMEL 0x1F
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120 #define ATMEL_AT29C040_ID 0X5B
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121 #define ATMEL_AT29C040A_ID 0XA4
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122 #define ATMEL_AT29C1024_ID 0X25
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123 #define ATMEL_SECTOR_SIZE 256
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124 #define ATMEL_MAX_SECTORS 2048
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125
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126 int manuf_code, device_code, sector_size, max_no_of_sectors, word_mode;
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127 volatile char *FLASH = (volatile char *)0x04000000;
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128
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129 int
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130 identify_FLASH(void )
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131 {
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132 // Enter Software Product Identification Mode
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133 FLASH[SEQ_ADD1] = START_CMD1;
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134 FLASH[SEQ_ADD2] = START_CMD2;
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135 FLASH[SEQ_ADD1] = ID_CMD;
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136
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137 // Wait at least 10ms
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138 cyg_thread_delay(2);
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139
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140 // Read Manufacturer and device code from the device
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141 manuf_code = FLASH[0];
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142 device_code = FLASH[1];
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143
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144 diag_printf("manuf: %x, device: %x\n", manuf_code, device_code);
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145
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146 // Exit Software Product Identification Mode
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147 FLASH[SEQ_ADD1] = START_CMD1;
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148 FLASH[SEQ_ADD2] = START_CMD2;
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149 FLASH[SEQ_ADD1] = STOP_CMD;
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150
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151 // Wait at least 10ms
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152 cyg_thread_delay(5);
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153
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154 if (manuf_code != MAN_ATMEL) {
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155 diag_printf ( "Error: Wrong Manufaturer: %02x\n",manuf_code );
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156 return (0);
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157 }
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158
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159 switch (device_code) {
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160 case ATMEL_AT29C040A_ID:
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161 diag_printf ("AT29C040A recognised\n");
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162 sector_size = ATMEL_SECTOR_SIZE;
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163 max_no_of_sectors = ATMEL_MAX_SECTORS;
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164 word_mode = FALSE;
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165 break;
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166 case ATMEL_AT29C1024_ID:
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167 diag_printf ("AT29C1024 recognised\n");
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168 sector_size = ATMEL_SECTOR_SIZE;
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169 max_no_of_sectors = ATMEL_MAX_SECTORS;
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170 word_mode = TRUE;
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171 break;
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172 default :
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173 diag_printf ( "Error: Unsupported device: %02x\n", device_code);
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174 return (0);
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175 }
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176 return (1);
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177 }
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178
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179 void
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180 write_sector(int num, char *buf)
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181 {
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182 int i, cnt;
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183 volatile char *wrt = (volatile char *)&FLASH[num*sector_size];
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184
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185 // diag_printf("Writing to %08x\n", wrt);
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186 // Enter Program Mode
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187 FLASH[SEQ_ADD1] = START_CMD1;
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188 FLASH[SEQ_ADD2] = START_CMD2;
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189 FLASH[SEQ_ADD1] = PROG_CMD;
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190
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191 // Note: write bytes as longs regardless of bus width
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192 for (i = 0; i < sector_size; i++) {
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193 wrt[i] = BUF(i);
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194 }
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195
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196 // Wait for sector to program
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197 cnt = 0;
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198 i = sector_size - 1;
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199 while (wrt[i] != BUF(i)) {
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200 if (cnt++ > 0x01000000) break;
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201 }
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202 // 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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203
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204 // Verify
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205 for (i = 0; i < sector_size; i++) {
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206 for (cnt = 0; cnt < 10; cnt++) {
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207 if (wrt[i] == BUF(i)) break;
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208 cyg_thread_delay(1);
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209 }
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210 if (cnt == 10) {
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211 diag_printf("Can't program at 0x%08X: %02X not %02X\n", wrt, *wrt, BUF(0));
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212 }
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213 }
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214 }