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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children 74dbf4c3f2e1
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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 //####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####
76
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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: 1998-11-18
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46 // Description: Tool used to program onboard FLASH image
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47 //####DESCRIPTIONEND####
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48
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49 //
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50 // This program will program the FLASH on the PID board
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51 // It is similar to 'flash' (which also downloads S records) but it always
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52 // programs from a fixed buffer. This is sufficient to load/update the GDB
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53 // stubs on the board.
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54 //
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55
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56 #include <pkgconf/libc.h> // Configuration header
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57
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58 #include <cyg/kernel/kapi.h>
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59 #include <stdlib.h>
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60 #include <ctype.h>
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61 #include <cyg/infra/testcase.h>
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62 #include <sys/cstartup.h>
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63
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64 #ifndef FALSE
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65 #define FALSE 0
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66 #define TRUE 1
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67 #endif
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68
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69 extern void diag_printf(const char *, ...);
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70 int identify_FLASH(void);
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71 void write_sector(int, char *);
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72
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73 char *flash_buffer = (char *)0x60000;
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74 char *flash_buffer_end = (char *)0x80000;
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75
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76 #ifdef BE_IMAGE
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77 #define BUF(x) buf[x^3]
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78 #else
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79 #define BUF(x) buf[x]
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80 #endif
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81
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82 // FUNCTIONS
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83
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84 externC void
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85 cyg_package_start( void )
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86 {
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87 #ifdef CYGPKG_LIBC
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88 cyg_iso_c_start();
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89 #else
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90 (void)main(0, NULL);
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91 #endif
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92 } // cyg_package_start()
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93
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94 int
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95 main( int argc, char *argv[] )
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96 {
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97 int i;
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98
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99 diag_printf("FLASH here!\n");
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100 while (identify_FLASH() == 0) {
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101 diag_printf("... Please change FLASH jumper\n");
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102 cyg_thread_delay(5*100);
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103 }
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104 diag_printf("About to program FLASH using data at %x..%x\n", flash_buffer, flash_buffer_end);
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105 diag_printf("*** Press RESET now to abort!\n");
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106 cyg_thread_delay(5*100);
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107 diag_printf("\n");
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108 diag_printf("...Programming FLASH\n");
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109
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110 i = 0;
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111 while (flash_buffer < flash_buffer_end) {
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112 write_sector(i++, flash_buffer);
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113 flash_buffer += 256;
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114 }
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115 diag_printf("All done!\n");
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116 while (1) ;
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117 }
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118
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119 // Adapted from ARM sample code
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120 #define SEQ_ADD1 0x5555
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121 #define SEQ_ADD2 0xAAAA
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122 #define START_CMD1 0xAA
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123 #define START_CMD2 0x55
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124 #define ID_CMD 0x90
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125 #define PROG_CMD 0xA0
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126 #define STOP_CMD 0xF0
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127
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128 #define MAN_ATMEL 0x1F
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129 #define ATMEL_AT29C040_ID 0X5B
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130 #define ATMEL_AT29C040A_ID 0XA4
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131 #define ATMEL_AT29C1024_ID 0X25
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132 #define ATMEL_SECTOR_SIZE 256
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133 #define ATMEL_MAX_SECTORS 2048
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134
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135 int manuf_code, device_code, sector_size, max_no_of_sectors, word_mode;
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136 volatile char *FLASH = (volatile char *)0x04000000;
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137
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138 int
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139 identify_FLASH(void )
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140 {
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141 // Enter Software Product Identification Mode
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142 FLASH[SEQ_ADD1] = START_CMD1;
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143 FLASH[SEQ_ADD2] = START_CMD2;
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144 FLASH[SEQ_ADD1] = ID_CMD;
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145
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146 // Wait at least 10ms
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147 cyg_thread_delay(2);
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148
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149 // Read Manufacturer and device code from the device
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150 manuf_code = FLASH[0];
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151 device_code = FLASH[1];
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152
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153 diag_printf("manuf: %x, device: %x\n", manuf_code, device_code);
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154
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155 // Exit Software Product Identification Mode
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156 FLASH[SEQ_ADD1] = START_CMD1;
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157 FLASH[SEQ_ADD2] = START_CMD2;
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158 FLASH[SEQ_ADD1] = STOP_CMD;
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159
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160 // Wait at least 10ms
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161 cyg_thread_delay(5);
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162
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163 if (manuf_code != MAN_ATMEL) {
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164 diag_printf ( "Error: Wrong Manufaturer: %02x\n",manuf_code );
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165 return (0);
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166 }
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167
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168 switch (device_code) {
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169 case ATMEL_AT29C040A_ID:
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170 diag_printf ("AT29C040A recognised\n");
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171 sector_size = ATMEL_SECTOR_SIZE;
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172 max_no_of_sectors = ATMEL_MAX_SECTORS;
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173 word_mode = FALSE;
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174 break;
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175 case ATMEL_AT29C1024_ID:
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176 diag_printf ("AT29C1024 recognised\n");
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177 sector_size = ATMEL_SECTOR_SIZE;
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178 max_no_of_sectors = ATMEL_MAX_SECTORS;
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179 word_mode = TRUE;
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180 break;
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181 default :
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182 diag_printf ( "Error: Unsupported device: %02x\n", device_code);
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183 return (0);
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184 }
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185 return (1);
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186 }
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187
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188 void
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189 write_sector(int num, char *buf)
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190 {
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191 int i, cnt;
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192 volatile char *wrt = (volatile char *)&FLASH[num*sector_size];
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193
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194 // diag_printf("Writing to %08x\n", wrt);
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195 // Enter Program Mode
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196 FLASH[SEQ_ADD1] = START_CMD1;
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197 FLASH[SEQ_ADD2] = START_CMD2;
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198 FLASH[SEQ_ADD1] = PROG_CMD;
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199
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200 // Note: write bytes as longs regardless of bus width
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201 for (i = 0; i < sector_size; i++) {
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202 wrt[i] = BUF(i);
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203 }
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204
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205 // Wait for sector to program
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206 cnt = 0;
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207 i = sector_size - 1;
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208 while (wrt[i] != BUF(i)) {
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209 if (cnt++ > 0x01000000) break;
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210 }
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211 // 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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212
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213 // Verify
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214 for (i = 0; i < sector_size; i++) {
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215 for (cnt = 0; cnt < 10; cnt++) {
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216 if (wrt[i] == BUF(i)) break;
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217 cyg_thread_delay(1);
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218 }
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219 if (cnt == 10) {
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220 diag_printf("Can't program at 0x%08X: %02X not %02X\n", wrt, *wrt, BUF(0));
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221 }
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222 }
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223 }