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annotate packages/redboot/current/src/load.c @ 174:38892b97b685

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Merge from eCos master repository on 2001-07-28-00:17:32-BST
author jlarmour
date Sun, 29 Jul 2001 02:00:07 +0000
parents 42f843b391aa
children 391299f9e541
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1 //==========================================================================
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2 //
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3 // load.c
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4 //
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5 // RedBoot file/image loader
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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, 2001 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: 2000-07-14
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37 // Purpose:
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38 // Description:
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39 //
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40 // This code is part of RedBoot (tm).
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41 //
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42 //####DESCRIPTIONEND####
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43 //
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44 //==========================================================================
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45
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46 #include <redboot.h>
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47 #include <xyzModem.h>
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48 #ifdef CYGPKG_REDBOOT_DISK
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49 #include <fs/disk.h>
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50 #endif
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51
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52 // Buffer used by redboot_getc
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53 getc_info_t getc_info;
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54
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55 static char usage[] = "[-r] [-v] "
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56 #ifdef CYGPKG_COMPRESS_ZLIB
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57 "[-d] "
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58 #endif
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59 "[-h <host>] [-m {TFTP | xyzMODEM"
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60 #ifdef CYGPKG_REDBOOT_DISK
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61 " | disk"
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62 #endif
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63 "}]\n [-b <base_address>] <file_name>";
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64
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65 // Exported CLI function
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66 RedBoot_cmd("load",
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67 "Load a file",
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68 usage,
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69 do_load
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70 );
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71
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72 static unsigned long
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73 load_elf_image(int (*getc)(void))
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74 {
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75 printf("ELF images not supported\n");
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76 return 0;
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77 }
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78
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79 //
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80 // Scan a string of hex bytes and update the checksum
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81 //
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82 static long
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83 _hex2(int (*getc)(void), int len, long *sum)
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84 {
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85 int val, byte;
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86 char c1, c2;
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87
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88 val = 0;
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89 while (len-- > 0) {
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90 c1 = (*getc)();
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91 c2 = (*getc)();
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92 if (_is_hex(c1) && _is_hex(c2)) {
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93 val <<= 8;
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94 byte = (_from_hex(c1)<<4) | _from_hex(c2);
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95 val |= byte;
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96 if (sum) {
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97 *sum += byte;
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98 }
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99 } else {
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100 return (-1);
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101 }
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102 }
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103 return (val);
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104 }
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105
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106 //
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107 // Process a set of S-records, loading the contents into memory.
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108 // Note: if a "base" value is provided, the data will be relocated
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109 // relative to that location. Of course, this can only work for
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110 // the first section of the data, so if there are non-contiguous
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111 // pieces of data, they will end up relocated in the same fashion.
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112 // Because of this, "base" probably only makes sense for a set of
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113 // data which has only one section, e.g. a ROM image.
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114 //
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115 #define MAX_LINE 80
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116 static unsigned long
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117 load_srec_image(int (*getc)(void), unsigned long base)
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118 {
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119 char line[MAX_LINE];
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120 char *lp;
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121 int c, len;
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122 long offset = 0, count, sum, val, cksum;
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123 unsigned char *addr, *base_addr;
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124 char type;
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125 bool first_addr = true;
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126 unsigned long addr_offset = 0;
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127 unsigned long highest_address = 0;
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128 unsigned long lowest_address = 0xFFFFFFFF;
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129
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130 while ((c = (*getc)()) > 0) {
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131 lp = line; len = 0;
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132 // Start of line
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133 if (c != 'S') {
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134 printf("Invalid S-record at offset %p, input: %c\n",
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135 (void *)offset, c);
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136 return 0;
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137 }
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138 type = (*getc)();
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139 offset += 2;
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140 sum = 0;
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141 if ((count = _hex2(getc, 1, &sum)) < 0) {
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142 printf("Bad S-record count at offset %p\n", (void *)offset);
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143 return 0;
115
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144 }
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145 offset += 1;
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146 switch (type) {
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147 case '0':
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148 break;
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149 case '1':
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150 case '2':
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151 case '3':
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152 base_addr = addr = (unsigned char *)_hex2(getc, (type-'1'+2), &sum);
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153 offset += (type-'1'+2);
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154 if (first_addr) {
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155 if (base) {
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156 addr_offset = (unsigned long)base - (unsigned long)addr;
117
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157 printf("Address offset = %p\n", (void *)addr_offset);
115
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158 } else {
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159 addr_offset = 0;
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160 }
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161 first_addr = false;
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162 }
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163 addr += addr_offset;
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164 if ((unsigned long)(addr-addr_offset) < lowest_address) {
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165 lowest_address = (unsigned long)(addr - addr_offset);
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166 }
174
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167 #ifdef CYGSEM_REDBOOT_VALIDATE_USER_RAM_LOADS
156
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168 if ((addr < user_ram_start) || (addr > user_ram_end)) {
161
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169 if (!verify_action("Attempt to load S-record data to address: %p\n"
171
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170 "RedBoot does not believe this is in RAM", (void*)addr))
161
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171 return 0;
115
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172 }
174
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173 #endif
115
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174 count -= ((type-'1'+2)+1);
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175 offset += count;
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176 while (count-- > 0) {
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177 val = _hex2(getc, 1, &sum);
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178 *addr++ = val;
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179 }
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180 cksum = _hex2(getc, 1, 0);
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181 offset += 1;
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182 sum = sum & 0xFF;
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183 cksum = (~cksum & 0xFF);
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184 if (cksum != sum) {
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185 printf("*** Warning! Checksum failure - Addr: %lx, %02lX <> %02lX\n",
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186 (unsigned long)base_addr, sum, cksum);
156
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187 return 0;
115
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188 }
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189 if ((unsigned long)(addr-addr_offset) > highest_address) {
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190 highest_address = (unsigned long)(addr - addr_offset);
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191 }
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192 break;
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193 case '7':
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194 case '8':
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195 case '9':
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196 addr = (unsigned char *)_hex2(getc, ('9'-type+2), &sum);
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197 offset += ('9'-type+2);
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198 entry_address = (unsigned long *)addr;
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199 printf("Entry point: %p, address range: %p-%p\n",
143
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200 (void*)entry_address, (void *)lowest_address, (void *)highest_address);
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201 while ((c = (*getc)()) > 0) ; // Swallow rest of data
156
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202 return highest_address;
115
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203 default:
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204 printf("Invalid S-record at offset 0x%lx, type: %x\n",
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205 (unsigned long)offset, type);
156
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206 return 0;
115
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207 }
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208 while ((c = (*getc)()) != '\n') offset++;
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209 }
156
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210 return 0;
115
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211 }
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212
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213
124
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214 int
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215 redboot_getc(void)
115
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216 {
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217 static char spin[] = "|/-\\|-";
124
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218 if (getc_info.avail < 0) {
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219 return -1;
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220 }
115
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221 if (getc_info.avail == 0) {
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222 if (getc_info.verbose) {
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223 printf("%c\b", spin[getc_info.tick++]);
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224 if (getc_info.tick >= sizeof(spin)) {
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225 getc_info.tick = 0;
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226 }
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227 }
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228 if (getc_info.len < BUF_SIZE) {
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229 // No more data available
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230 if (getc_info.verbose) printf("\n");
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231 return -1;
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232 }
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233 getc_info.bufp = getc_info.buf;
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234 getc_info.len = (*getc_info.fun)(getc_info.bufp, BUF_SIZE, &getc_info.err);
117
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235 if ((getc_info.avail = getc_info.len) <= 0) {
115
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236 if (getc_info.verbose) printf("\n");
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237 return -1;
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238 }
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239 }
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240 getc_info.avail--;
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241 return *getc_info.bufp++;
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242 }
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243
124
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244 void
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diff changeset
245 redboot_getc_init(int (*fun)(char *, int, int *), int verbose)
115
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246 {
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247 getc_info.avail = 0;
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248 getc_info.len = BUF_SIZE;
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249 getc_info.fun = fun;
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250 getc_info.verbose = verbose;
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251 getc_info.tick = 0;
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252 }
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253
124
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254 void
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255 redboot_getc_rewind(void)
115
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256 {
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257 getc_info.bufp = getc_info.buf;
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258 getc_info.avail = getc_info.len;
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259 }
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260
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261 #define MODE_TFTP 0
174
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262 #define MODE_XMODEM xyzModem_xmodem // 1
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263 #define MODE_YMODEM xyzModem_ymodem // 2
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264 #define MODE_ZMODEM xyzModem_zmodem // 3
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265 #define MODE_DISK 4
115
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266
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267 void
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268 do_load(int argc, char *argv[])
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269 {
126
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diff changeset
270 int res, num_options;
132
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271 int i, err, mode;
117
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272 bool verbose, raw;
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diff changeset
273 bool base_addr_set, mode_str_set;
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diff changeset
274 char *mode_str;
115
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275 #ifdef CYGPKG_REDBOOT_NETWORKING
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276 struct sockaddr_in host;
117
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diff changeset
277 bool hostname_set;
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278 char *hostname;
115
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279 #endif
156
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280 #ifdef CYGPKG_COMPRESS_ZLIB
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281 bool decompress;
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282 #endif
115
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283 unsigned long base = 0;
156
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diff changeset
284 unsigned long end = 0;
115
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diff changeset
285 char type[4];
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286 char *filename = 0;
156
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diff changeset
287 struct option_info opts[6];
115
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diff changeset
288
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diff changeset
289 #ifdef CYGPKG_REDBOOT_NETWORKING
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290 memset((char *)&host, 0, sizeof(host));
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291 host.sin_len = sizeof(host);
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292 host.sin_family = AF_INET;
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293 host.sin_addr = my_bootp_info.bp_siaddr;
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294 host.sin_port = 0;
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diff changeset
295 #endif
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296 #ifdef CYGPKG_REDBOOT_NETWORKING
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297 mode = MODE_TFTP;
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diff changeset
298 #else
132
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299 mode = MODE_YMODEM;
115
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300 #endif
117
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diff changeset
301
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302 init_opts(&opts[0], 'v', false, OPTION_ARG_TYPE_FLG,
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303 (void **)&verbose, 0, "verbose");
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304 init_opts(&opts[1], 'r', false, OPTION_ARG_TYPE_FLG,
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305 (void **)&raw, 0, "load raw data");
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diff changeset
306 init_opts(&opts[2], 'b', true, OPTION_ARG_TYPE_NUM,
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307 (void **)&base, (bool *)&base_addr_set, "load address");
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308 init_opts(&opts[3], 'm', true, OPTION_ARG_TYPE_STR,
174
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309 (void **)&mode_str, (bool *)&mode_str_set, "download mode (TFTP, xyzMODEM, or disk)");
117
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diff changeset
310 num_options = 4;
115
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311 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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312 init_opts(&opts[4], 'h', true, OPTION_ARG_TYPE_STR,
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313 (void **)&hostname, (bool *)&hostname_set, "host name (IP address)");
156
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314 num_options++;
115
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315 #endif
156
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316 #ifdef CYGPKG_COMPRESS_ZLIB
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317 init_opts(&opts[5], 'd', false, OPTION_ARG_TYPE_FLG,
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318 (void **)&decompress, 0, "decompress");
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319 num_options++;
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320 #endif
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321
117
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322 if (!scan_opts(argc, argv, 1, opts, num_options, (void *)&filename, OPTION_ARG_TYPE_STR, "file name"))
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323 {
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diff changeset
324 return;
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325 }
115
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326 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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327 if (hostname_set) {
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328 if (!inet_aton(hostname, (in_addr_t *)&host)) {
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329 printf("Invalid IP address: %s\n", hostname);
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330 return;
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331 }
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332 }
115
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333 #endif
117
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334 if (mode_str_set) {
132
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335 if (strncmpci(&mode_str[1], "modem", strlen(&mode_str[1])) == 0) {
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336 switch (tolower(mode_str[0])) {
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diff changeset
337 case 'x':
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338 mode = MODE_XMODEM;
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339 break;
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340 case 'y':
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341 mode = MODE_YMODEM;
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342 break;
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343 case 'z':
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344 mode = MODE_ZMODEM;
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345 break;
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346 default:
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347 printf("Invalid 'mode': %s\n", mode_str);
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348 return;
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349 }
165
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350 // When using a serial download type, override verbose
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351 // setting: spinner interferes with the protocol.
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352 verbose = false;
174
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353 #ifdef CYGPKG_REDBOOT_DISK
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354 } else if (strcmpci(mode_str, "disk") == 0) {
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355 mode = MODE_DISK;
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356 #endif
117
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357 #ifdef CYGPKG_REDBOOT_NETWORKING
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358 } else if (strcmpci(mode_str, "tftp") == 0) {
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359 mode = MODE_TFTP;
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360 if (!have_net) {
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361 printf("TFTP mode requires a working network\n");
115
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362 return;
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363 }
117
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diff changeset
364 #endif
115
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365 } else {
117
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366 printf("Invalid 'mode': %s\n", mode_str);
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367 return;
115
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368 }
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369 }
174
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diff changeset
370 #if defined(CYGPKG_REDBOOT_NETWORKING) || defined(CYGPKG_REDBOOT_DISK)
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371 if ((mode == MODE_TFTP || mode == MODE_DISK) && !filename) {
115
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372 printf("File name missing\n");
132
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diff changeset
373 printf("usage: load %s\n", usage);
115
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374 return;
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375 }
162
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diff changeset
376 #endif
174
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diff changeset
377 #ifdef CYGSEM_REDBOOT_VALIDATE_USER_RAM_LOADS
153
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diff changeset
378 if (base_addr_set &&
156
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379 ((base < (unsigned long)user_ram_start) ||
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diff changeset
380 (base > (unsigned long)user_ram_end))) {
161
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381 if (!verify_action("Specified address (%p) is not believed to be in RAM", (void*)base))
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382 return;
143
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diff changeset
383 }
174
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384 #endif
157
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diff changeset
385 if (raw && !base_addr_set) {
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diff changeset
386 printf("Raw load requires a memory address\n");
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387 return;
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diff changeset
388 }
115
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389 #ifdef CYGPKG_REDBOOT_NETWORKING
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390 if (mode == MODE_TFTP) {
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391 res = tftp_stream_open(filename, &host, TFTP_OCTET, &err);
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392 if (res < 0) {
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393 printf("Can't load '%s': %s\n", filename, tftp_error(err));
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394 return;
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395 }
124
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diff changeset
396 redboot_getc_init(tftp_stream_read, verbose);
115
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397 }
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398 #endif
174
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diff changeset
399 #ifdef CYGPKG_REDBOOT_DISK
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diff changeset
400 else if (mode == MODE_DISK) {
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diff changeset
401 res = disk_stream_open(filename, &err);
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diff changeset
402 if (res < 0) {
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diff changeset
403 printf("Can't load '%s': %s\n", filename, disk_error(err));
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diff changeset
404 return;
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diff changeset
405 }
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diff changeset
406 redboot_getc_init(disk_stream_read, verbose);
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diff changeset
407 }
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diff changeset
408 #endif
132
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diff changeset
409 else {
174
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diff changeset
410 res = xyzModem_stream_open(filename, mode, &err);
132
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diff changeset
411 if (res < 0) {
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diff changeset
412 printf("Can't load '%s': %s\n", filename, xyzModem_error(err));
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diff changeset
413 return;
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diff changeset
414 }
143
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diff changeset
415 // Suppress verbosity when using xyz modem download
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416 redboot_getc_init(xyzModem_stream_read, 0 && verbose);
115
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417 }
157
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diff changeset
418 if (raw) {
156
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diff changeset
419 #ifdef CYGPKG_COMPRESS_ZLIB
157
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diff changeset
420 if (decompress) {
163
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421 _pipe_t load_pipe;
157
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422 _pipe_t* p = &load_pipe;
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423 unsigned char _buffer[CYGNUM_REDBOOT_LOAD_ZLIB_BUFFER];
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424
157
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425 p->out_buf = (unsigned char*) base;
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426 p->out_size = 0;
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427 p->in_buf = _buffer;
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428
157
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429 err = (*_dc_init)(p);
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430
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431 while (0 == err) {
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432 p->in_avail = 0;
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433 for (i = 0; i < CYGNUM_REDBOOT_LOAD_ZLIB_BUFFER; i++) {
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434 res = redboot_getc();
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435 if (res < 0) break;
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436 p->in_buf[p->in_avail++] = res;
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437 }
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438 if (0 == p->in_avail) break;
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439
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440 err = (*_dc_inflate)(p);
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441 }
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442
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443 // Free used resources, do final translation of
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444 // error value.
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445 err = (*_dc_close)(p, err);
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446
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447 if (0 != err && p->msg) {
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448 printf("decompression error: %s\n", p->msg);
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449 }
156
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450
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451 end = (unsigned long) base + p->out_size;
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452 } else // dangling block
156
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453 #endif
157
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454 {
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455 unsigned char *mp = (unsigned char *)base;
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456 while ((res = redboot_getc()) >= 0) {
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457 *mp++ = res;
132
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458 }
157
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459 err = 0;
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460 end = (unsigned long) mp;
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461 }
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462 if (0 == err)
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463 printf("Raw file loaded %p-%p\n", (void *)base, (void *)end);
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464 } else {
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465 // Read initial header - to determine file [image] type
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466 for (i = 0; i < sizeof(type); i++) {
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467 if ((res = redboot_getc()) < 0) {
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468 err = getc_info.err;
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469 break;
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470 }
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471 type[i] = res;
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472 }
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473 if (res >= 0) {
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474 redboot_getc_rewind(); // Restore header to stream
132
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475 // Treat data as some sort of executable image
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476 if (strncmp(&type[1], "ELF", 3) == 0) {
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477 end = load_elf_image(redboot_getc);
132
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478 } else if ((type[0] == 'S') &&
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479 ((type[1] >= '0') && (type[1] <= '9'))) {
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480 end = load_srec_image(redboot_getc, base);
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481 } else {
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482 printf("Unrecognized image type: 0x%lx\n", *(unsigned long *)type);
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483 }
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484 }
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485 }
174
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486
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487 switch (mode) {
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488 #ifdef CYGPKG_REDBOOT_DISK
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489 case MODE_DISK:
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490 disk_stream_close(&err);
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491 break;
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492 #endif
115
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493 #ifdef CYGPKG_REDBOOT_NETWORKING
174
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494 case MODE_TFTP:
115
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495 tftp_stream_close(&err);
174
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496 break;
115
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497 #endif
174
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498 default:
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499 xyzModem_stream_close(&err);
174
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500 break;
143
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501 }
115
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502 return;
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503 }