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annotate packages/redboot/current/src/load.c @ 151:25e238959bae

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Merge from eCos master repository on 2001-02-12-23:44:24-GMT
author jlarmour
date Tue, 13 Feb 2001 01:23:16 +0000
parents 6b5f480c6929
children 5e8f3b328bb3
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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 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
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49 // Buffer used by redboot_getc
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50 getc_info_t getc_info;
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51
132
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52 static char usage[] = "[-r] [-v] [-h <host>] [-m {TFTP | xyzMODEM}] [-b <base_address>] <file_name>";
124
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53
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54 // Exported CLI function
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55 RedBoot_cmd("load",
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56 "Load a file",
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57 usage,
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58 do_load
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59 );
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60
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61 static void
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62 load_elf_image(int (*getc)(void))
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63 {
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64 printf("ELF images not supported\n");
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65 }
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66
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67 //
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68 // Scan a string of hex bytes and update the checksum
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69 //
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70 static long
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71 _hex2(int (*getc)(void), int len, long *sum)
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72 {
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73 int val, byte;
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74 char c1, c2;
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75
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76 val = 0;
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77 while (len-- > 0) {
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78 c1 = (*getc)();
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79 c2 = (*getc)();
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80 if (_is_hex(c1) && _is_hex(c2)) {
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81 val <<= 8;
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82 byte = (_from_hex(c1)<<4) | _from_hex(c2);
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83 val |= byte;
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84 if (sum) {
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85 *sum += byte;
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86 }
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87 } else {
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88 return (-1);
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89 }
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90 }
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91 return (val);
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92 }
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93
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94 //
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95 // Process a set of S-records, loading the contents into memory.
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96 // Note: if a "base" value is provided, the data will be relocated
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97 // relative to that location. Of course, this can only work for
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98 // the first section of the data, so if there are non-contiguous
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99 // pieces of data, they will end up relocated in the same fashion.
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100 // Because of this, "base" probably only makes sense for a set of
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101 // data which has only one section, e.g. a ROM image.
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102 //
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103 #define MAX_LINE 80
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104 static void
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105 load_srec_image(int (*getc)(void), unsigned long base)
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106 {
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107 char line[MAX_LINE];
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108 char *lp;
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109 int c, len;
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110 long offset = 0, count, sum, val, cksum;
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111 unsigned char *addr, *base_addr;
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112 char type;
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113 bool first_addr = true;
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114 unsigned long addr_offset = 0;
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115 unsigned long highest_address = 0;
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116 unsigned long lowest_address = 0xFFFFFFFF;
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117
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118 while ((c = (*getc)()) > 0) {
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119 lp = line; len = 0;
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120 // Start of line
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121 if (c != 'S') {
117
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122 printf("Invalid S-record at offset %p, input: %c\n",
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123 (void *)offset, c);
115
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124 return;
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125 }
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126 type = (*getc)();
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127 offset += 2;
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128 sum = 0;
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129 if ((count = _hex2(getc, 1, &sum)) < 0) {
117
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130 printf("Bad S-record count at offset %p\n", (void *)offset);
115
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131 return;
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132 }
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133 offset += 1;
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134 switch (type) {
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135 case '0':
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136 break;
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137 case '1':
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138 case '2':
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139 case '3':
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140 base_addr = addr = (unsigned char *)_hex2(getc, (type-'1'+2), &sum);
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141 offset += (type-'1'+2);
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142 if (first_addr) {
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143 if (base) {
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144 addr_offset = (unsigned long)base - (unsigned long)addr;
117
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145 printf("Address offset = %p\n", (void *)addr_offset);
115
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146 } else {
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147 addr_offset = 0;
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148 }
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149 first_addr = false;
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150 }
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151 addr += addr_offset;
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152 if ((unsigned long)(addr-addr_offset) < lowest_address) {
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153 lowest_address = (unsigned long)(addr - addr_offset);
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154 }
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155 if ((addr < ram_start) || (addr > ram_end)) {
143
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156 printf("Attempt to load S-record data to address: %p [not in RAM]\n", (void*)addr);
115
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157 return;
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158 }
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159 count -= ((type-'1'+2)+1);
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160 offset += count;
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161 while (count-- > 0) {
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162 val = _hex2(getc, 1, &sum);
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163 *addr++ = val;
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164 }
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165 cksum = _hex2(getc, 1, 0);
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166 offset += 1;
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167 sum = sum & 0xFF;
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168 cksum = (~cksum & 0xFF);
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169 if (cksum != sum) {
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170 printf("*** Warning! Checksum failure - Addr: %lx, %02lX <> %02lX\n",
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171 (unsigned long)base_addr, sum, cksum);
126
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172 return;
115
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173 }
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174 if ((unsigned long)(addr-addr_offset) > highest_address) {
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175 highest_address = (unsigned long)(addr - addr_offset);
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176 }
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177 break;
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178 case '7':
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179 case '8':
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180 case '9':
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181 addr = (unsigned char *)_hex2(getc, ('9'-type+2), &sum);
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182 offset += ('9'-type+2);
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183 entry_address = (unsigned long *)addr;
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184 printf("Entry point: %p, address range: %p-%p\n",
143
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185 (void*)entry_address, (void *)lowest_address, (void *)highest_address);
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186 while ((c = (*getc)()) > 0) ; // Swallow rest of data
115
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187 return;
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188 default:
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189 printf("Invalid S-record at offset 0x%lx, type: %x\n",
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190 (unsigned long)offset, type);
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191 return;
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192 }
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193 while ((c = (*getc)()) != '\n') offset++;
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194 }
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195 }
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196
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197
124
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198 int
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199 redboot_getc(void)
115
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200 {
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201 static char spin[] = "|/-\\|-";
124
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202 if (getc_info.avail < 0) {
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203 return -1;
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204 }
115
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205 if (getc_info.avail == 0) {
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206 if (getc_info.verbose) {
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207 printf("%c\b", spin[getc_info.tick++]);
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208 if (getc_info.tick >= sizeof(spin)) {
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209 getc_info.tick = 0;
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210 }
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211 }
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212 if (getc_info.len < BUF_SIZE) {
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213 // No more data available
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214 if (getc_info.verbose) printf("\n");
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215 return -1;
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216 }
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217 getc_info.bufp = getc_info.buf;
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218 getc_info.len = (*getc_info.fun)(getc_info.bufp, BUF_SIZE, &getc_info.err);
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219 if ((getc_info.avail = getc_info.len) <= 0) {
115
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220 if (getc_info.verbose) printf("\n");
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221 return -1;
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222 }
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223 }
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224 getc_info.avail--;
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225 return *getc_info.bufp++;
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226 }
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227
124
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228 void
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229 redboot_getc_init(int (*fun)(char *, int, int *), int verbose)
115
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230 {
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231 getc_info.avail = 0;
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232 getc_info.len = BUF_SIZE;
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233 getc_info.fun = fun;
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234 getc_info.verbose = verbose;
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235 getc_info.tick = 0;
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236 }
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237
124
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238 void
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239 redboot_getc_rewind(void)
115
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240 {
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241 getc_info.bufp = getc_info.buf;
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242 getc_info.avail = getc_info.len;
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243 }
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244
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245 #define MODE_TFTP 0
132
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246 #define MODE_XMODEM xyzModem_xmodem
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247 #define MODE_YMODEM xyzModem_ymodem
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248 #define MODE_ZMODEM xyzModem_zmodem
115
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249
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250 void
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251 do_load(int argc, char *argv[])
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252 {
126
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253 int res, num_options;
132
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254 int i, err, mode;
117
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255 bool verbose, raw;
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256 bool base_addr_set, mode_str_set;
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257 char *mode_str;
115
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258 #ifdef CYGPKG_REDBOOT_NETWORKING
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259 struct sockaddr_in host;
117
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260 bool hostname_set;
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261 char *hostname;
115
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262 #endif
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263 unsigned long base = 0;
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264 char type[4];
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265 char *filename = 0;
117
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266 struct option_info opts[5];
115
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267
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268 #ifdef CYGPKG_REDBOOT_NETWORKING
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269 memset((char *)&host, 0, sizeof(host));
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270 host.sin_len = sizeof(host);
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271 host.sin_family = AF_INET;
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272 host.sin_addr = my_bootp_info.bp_siaddr;
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273 host.sin_port = 0;
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274 #endif
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275 #ifdef CYGPKG_REDBOOT_NETWORKING
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276 mode = MODE_TFTP;
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277 #else
132
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278 mode = MODE_YMODEM;
115
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279 #endif
117
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280
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281 init_opts(&opts[0], 'v', false, OPTION_ARG_TYPE_FLG,
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282 (void **)&verbose, 0, "verbose");
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283 init_opts(&opts[1], 'r', false, OPTION_ARG_TYPE_FLG,
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diff changeset
284 (void **)&raw, 0, "load raw data");
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diff changeset
285 init_opts(&opts[2], 'b', true, OPTION_ARG_TYPE_NUM,
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286 (void **)&base, (bool *)&base_addr_set, "load address");
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287 init_opts(&opts[3], 'm', true, OPTION_ARG_TYPE_STR,
132
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288 (void **)&mode_str, (bool *)&mode_str_set, "download mode (TFTP or xyzMODEM)");
117
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289 num_options = 4;
115
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290 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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291 init_opts(&opts[4], 'h', true, OPTION_ARG_TYPE_STR,
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292 (void **)&hostname, (bool *)&hostname_set, "host name (IP address)");
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293 num_options = 5;
115
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294 #endif
117
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295 if (!scan_opts(argc, argv, 1, opts, num_options, (void *)&filename, OPTION_ARG_TYPE_STR, "file name"))
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296 {
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diff changeset
297 return;
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298 }
115
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299 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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300 if (hostname_set) {
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301 if (!inet_aton(hostname, (in_addr_t *)&host)) {
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diff changeset
302 printf("Invalid IP address: %s\n", hostname);
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303 return;
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diff changeset
304 }
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305 }
115
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306 #endif
117
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diff changeset
307 if (mode_str_set) {
132
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diff changeset
308 if (strncmpci(&mode_str[1], "modem", strlen(&mode_str[1])) == 0) {
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diff changeset
309 switch (tolower(mode_str[0])) {
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diff changeset
310 case 'x':
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311 mode = MODE_XMODEM;
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312 break;
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diff changeset
313 case 'y':
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314 mode = MODE_YMODEM;
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315 break;
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diff changeset
316 case 'z':
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317 mode = MODE_ZMODEM;
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318 break;
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319 default:
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320 printf("Invalid 'mode': %s\n", mode_str);
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321 return;
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322 }
117
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diff changeset
323 #ifdef CYGPKG_REDBOOT_NETWORKING
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324 } else if (strcmpci(mode_str, "tftp") == 0) {
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325 mode = MODE_TFTP;
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326 if (!have_net) {
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327 printf("TFTP mode requires a working network\n");
115
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328 return;
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329 }
117
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diff changeset
330 #endif
115
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331 } else {
117
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diff changeset
332 printf("Invalid 'mode': %s\n", mode_str);
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333 return;
115
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334 }
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335 }
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336 if ((mode == MODE_TFTP) && !filename) {
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337 printf("File name missing\n");
132
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338 printf("usage: load %s\n", usage);
115
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339 return;
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340 }
143
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341 if (base_addr_set && ((base < ram_start) || (base > ram_end))) {
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342 printf("Specified address (%p) is not in RAM.\n", (void*)base);
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343 return;
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344 }
115
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345 #ifdef CYGPKG_REDBOOT_NETWORKING
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346 if (mode == MODE_TFTP) {
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347 res = tftp_stream_open(filename, &host, TFTP_OCTET, &err);
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348 if (res < 0) {
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349 printf("Can't load '%s': %s\n", filename, tftp_error(err));
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350 return;
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351 }
124
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352 redboot_getc_init(tftp_stream_read, verbose);
115
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353 }
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354 #endif
132
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355 else {
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356 res = xyzModem_stream_open(filename, mode, &err);
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357 if (res < 0) {
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358 printf("Can't load '%s': %s\n", filename, xyzModem_error(err));
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diff changeset
359 return;
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diff changeset
360 }
143
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diff changeset
361 // Suppress verbosity when using xyz modem download
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362 redboot_getc_init(xyzModem_stream_read, 0 && verbose);
115
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363 }
132
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diff changeset
364 // Read initial header - to determine file [image] type
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365 for (i = 0; i < sizeof(type); i++) {
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366 if ((res = redboot_getc()) < 0) {
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diff changeset
367 err = getc_info.err;
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diff changeset
368 break;
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diff changeset
369 }
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370 type[i] = res;
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371 }
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diff changeset
372 if (res >= 0) {
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373 redboot_getc_rewind(); // Restore header to stream
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374 if (raw) {
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375 if (!base_addr_set) {
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376 printf("Raw load requires a memory address\n");
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377 } else {
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diff changeset
378 unsigned char *mp = (unsigned char *)base;
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diff changeset
379 while ((res = redboot_getc()) >= 0) {
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380 *mp++ = res;
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381 }
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diff changeset
382 printf("Raw file loaded %p-%p\n", (void *)base, (void *)mp);
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diff changeset
383 }
115
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384 } else {
132
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diff changeset
385 // Treat data as some sort of executable image
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diff changeset
386 if (strncmp(&type[1], "ELF", 3) == 0) {
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diff changeset
387 load_elf_image(redboot_getc);
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diff changeset
388 } else if ((type[0] == 'S') &&
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diff changeset
389 ((type[1] >= '0') && (type[1] <= '9'))) {
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diff changeset
390 load_srec_image(redboot_getc, base);
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diff changeset
391 } else {
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diff changeset
392 printf("Unrecognized image type: %lx\n", *(unsigned long *)type);
115
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parents:
diff changeset
393 }
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parents:
diff changeset
394 }
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diff changeset
395 }
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diff changeset
396 #ifdef CYGPKG_REDBOOT_NETWORKING
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diff changeset
397 if (mode == MODE_TFTP) {
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398 tftp_stream_close(&err);
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399 }
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diff changeset
400 #endif
143
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diff changeset
401 if (mode != MODE_TFTP) {
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diff changeset
402 xyzModem_stream_close(&err);
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diff changeset
403 }
115
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parents:
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404 return;
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405 }