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annotate packages/redboot/current/src/load.c @ 157:b65ec671dd4c

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Merge from eCos master repository on 2001-04-06-18:28:36-BST
author jlarmour
date Fri, 06 Apr 2001 19:06:06 +0000
parents b939e9cada46
children ac086aa3217e
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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
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49 #ifdef CYGPKG_COMPRESS_ZLIB
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50 static unsigned char _buffer[CYGNUM_REDBOOT_LOAD_ZLIB_BUFFER];
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51 static _pipe_t load_pipe;
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52 #endif
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53
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54 // Buffer used by redboot_getc
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55 getc_info_t getc_info;
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56
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57 static char usage[] = "[-r] [-v] "
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58 #ifdef CYGPKG_COMPRESS_ZLIB
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59 "[-d] "
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60 #endif
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61 "[-h <host>] [-m {TFTP | xyzMODEM}]\n"
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62 " [-b <base_address>] <file_name>";
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63
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64 // Exported CLI function
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65 RedBoot_cmd("load",
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66 "Load a file",
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67 usage,
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68 do_load
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69 );
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70
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71 static unsigned long
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72 load_elf_image(int (*getc)(void))
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73 {
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74 printf("ELF images not supported\n");
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75 return 0;
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76 }
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77
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78 //
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79 // Scan a string of hex bytes and update the checksum
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80 //
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81 static long
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82 _hex2(int (*getc)(void), int len, long *sum)
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83 {
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84 int val, byte;
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85 char c1, c2;
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86
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87 val = 0;
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88 while (len-- > 0) {
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89 c1 = (*getc)();
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90 c2 = (*getc)();
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91 if (_is_hex(c1) && _is_hex(c2)) {
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92 val <<= 8;
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93 byte = (_from_hex(c1)<<4) | _from_hex(c2);
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94 val |= byte;
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95 if (sum) {
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96 *sum += byte;
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97 }
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98 } else {
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99 return (-1);
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100 }
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101 }
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102 return (val);
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103 }
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104
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105 //
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106 // Process a set of S-records, loading the contents into memory.
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107 // Note: if a "base" value is provided, the data will be relocated
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108 // relative to that location. Of course, this can only work for
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109 // the first section of the data, so if there are non-contiguous
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110 // pieces of data, they will end up relocated in the same fashion.
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111 // Because of this, "base" probably only makes sense for a set of
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112 // data which has only one section, e.g. a ROM image.
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113 //
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114 #define MAX_LINE 80
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115 static unsigned long
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116 load_srec_image(int (*getc)(void), unsigned long base)
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117 {
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118 char line[MAX_LINE];
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119 char *lp;
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120 int c, len;
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121 long offset = 0, count, sum, val, cksum;
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122 unsigned char *addr, *base_addr;
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123 char type;
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124 bool first_addr = true;
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125 unsigned long addr_offset = 0;
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126 unsigned long highest_address = 0;
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127 unsigned long lowest_address = 0xFFFFFFFF;
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128
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129 while ((c = (*getc)()) > 0) {
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130 lp = line; len = 0;
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131 // Start of line
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132 if (c != 'S') {
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133 printf("Invalid S-record at offset %p, input: %c\n",
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134 (void *)offset, c);
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135 return 0;
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136 }
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137 type = (*getc)();
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138 offset += 2;
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139 sum = 0;
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140 if ((count = _hex2(getc, 1, &sum)) < 0) {
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141 printf("Bad S-record count at offset %p\n", (void *)offset);
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142 return 0;
115
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143 }
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144 offset += 1;
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145 switch (type) {
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146 case '0':
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147 break;
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148 case '1':
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149 case '2':
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150 case '3':
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151 base_addr = addr = (unsigned char *)_hex2(getc, (type-'1'+2), &sum);
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152 offset += (type-'1'+2);
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153 if (first_addr) {
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154 if (base) {
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155 addr_offset = (unsigned long)base - (unsigned long)addr;
117
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156 printf("Address offset = %p\n", (void *)addr_offset);
115
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157 } else {
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158 addr_offset = 0;
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159 }
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160 first_addr = false;
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161 }
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162 addr += addr_offset;
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163 if ((unsigned long)(addr-addr_offset) < lowest_address) {
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164 lowest_address = (unsigned long)(addr - addr_offset);
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165 }
156
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166 if ((addr < user_ram_start) || (addr > user_ram_end)) {
143
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167 printf("Attempt to load S-record data to address: %p [not in RAM]\n", (void*)addr);
156
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168 return 0;
115
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169 }
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170 count -= ((type-'1'+2)+1);
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171 offset += count;
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172 while (count-- > 0) {
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173 val = _hex2(getc, 1, &sum);
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174 *addr++ = val;
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175 }
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176 cksum = _hex2(getc, 1, 0);
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177 offset += 1;
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178 sum = sum & 0xFF;
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179 cksum = (~cksum & 0xFF);
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180 if (cksum != sum) {
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181 printf("*** Warning! Checksum failure - Addr: %lx, %02lX <> %02lX\n",
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182 (unsigned long)base_addr, sum, cksum);
156
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183 return 0;
115
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184 }
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185 if ((unsigned long)(addr-addr_offset) > highest_address) {
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186 highest_address = (unsigned long)(addr - addr_offset);
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187 }
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188 break;
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189 case '7':
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190 case '8':
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191 case '9':
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192 addr = (unsigned char *)_hex2(getc, ('9'-type+2), &sum);
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193 offset += ('9'-type+2);
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194 entry_address = (unsigned long *)addr;
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195 printf("Entry point: %p, address range: %p-%p\n",
143
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196 (void*)entry_address, (void *)lowest_address, (void *)highest_address);
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197 while ((c = (*getc)()) > 0) ; // Swallow rest of data
156
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198 return highest_address;
115
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199 default:
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200 printf("Invalid S-record at offset 0x%lx, type: %x\n",
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201 (unsigned long)offset, type);
156
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202 return 0;
115
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203 }
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204 while ((c = (*getc)()) != '\n') offset++;
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205 }
156
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206 return 0;
115
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207 }
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208
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209
124
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210 int
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211 redboot_getc(void)
115
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212 {
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213 static char spin[] = "|/-\\|-";
124
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214 if (getc_info.avail < 0) {
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215 return -1;
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216 }
115
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217 if (getc_info.avail == 0) {
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218 if (getc_info.verbose) {
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219 printf("%c\b", spin[getc_info.tick++]);
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220 if (getc_info.tick >= sizeof(spin)) {
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221 getc_info.tick = 0;
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222 }
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223 }
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224 if (getc_info.len < BUF_SIZE) {
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225 // No more data available
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226 if (getc_info.verbose) printf("\n");
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227 return -1;
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228 }
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229 getc_info.bufp = getc_info.buf;
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230 getc_info.len = (*getc_info.fun)(getc_info.bufp, BUF_SIZE, &getc_info.err);
117
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231 if ((getc_info.avail = getc_info.len) <= 0) {
115
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232 if (getc_info.verbose) printf("\n");
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233 return -1;
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234 }
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235 }
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236 getc_info.avail--;
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237 return *getc_info.bufp++;
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238 }
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239
124
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240 void
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241 redboot_getc_init(int (*fun)(char *, int, int *), int verbose)
115
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242 {
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243 getc_info.avail = 0;
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244 getc_info.len = BUF_SIZE;
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245 getc_info.fun = fun;
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246 getc_info.verbose = verbose;
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247 getc_info.tick = 0;
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248 }
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249
124
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250 void
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251 redboot_getc_rewind(void)
115
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252 {
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253 getc_info.bufp = getc_info.buf;
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254 getc_info.avail = getc_info.len;
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255 }
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256
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257 #define MODE_TFTP 0
132
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258 #define MODE_XMODEM xyzModem_xmodem
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259 #define MODE_YMODEM xyzModem_ymodem
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260 #define MODE_ZMODEM xyzModem_zmodem
115
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261
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262 void
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263 do_load(int argc, char *argv[])
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264 {
126
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265 int res, num_options;
132
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266 int i, err, mode;
117
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267 bool verbose, raw;
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268 bool base_addr_set, mode_str_set;
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269 char *mode_str;
115
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270 #ifdef CYGPKG_REDBOOT_NETWORKING
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271 struct sockaddr_in host;
117
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272 bool hostname_set;
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273 char *hostname;
115
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274 #endif
156
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275 #ifdef CYGPKG_COMPRESS_ZLIB
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276 bool decompress;
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277 #endif
115
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278 unsigned long base = 0;
156
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279 unsigned long end = 0;
115
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280 char type[4];
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281 char *filename = 0;
156
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282 struct option_info opts[6];
115
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283
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284 #ifdef CYGPKG_REDBOOT_NETWORKING
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285 memset((char *)&host, 0, sizeof(host));
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286 host.sin_len = sizeof(host);
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287 host.sin_family = AF_INET;
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288 host.sin_addr = my_bootp_info.bp_siaddr;
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289 host.sin_port = 0;
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diff changeset
290 #endif
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291 #ifdef CYGPKG_REDBOOT_NETWORKING
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292 mode = MODE_TFTP;
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diff changeset
293 #else
132
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294 mode = MODE_YMODEM;
115
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295 #endif
117
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diff changeset
296
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297 init_opts(&opts[0], 'v', false, OPTION_ARG_TYPE_FLG,
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298 (void **)&verbose, 0, "verbose");
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diff changeset
299 init_opts(&opts[1], 'r', false, OPTION_ARG_TYPE_FLG,
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300 (void **)&raw, 0, "load raw data");
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diff changeset
301 init_opts(&opts[2], 'b', true, OPTION_ARG_TYPE_NUM,
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302 (void **)&base, (bool *)&base_addr_set, "load address");
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303 init_opts(&opts[3], 'm', true, OPTION_ARG_TYPE_STR,
132
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304 (void **)&mode_str, (bool *)&mode_str_set, "download mode (TFTP or xyzMODEM)");
117
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305 num_options = 4;
115
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306 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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307 init_opts(&opts[4], 'h', true, OPTION_ARG_TYPE_STR,
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308 (void **)&hostname, (bool *)&hostname_set, "host name (IP address)");
156
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309 num_options++;
115
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310 #endif
156
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311 #ifdef CYGPKG_COMPRESS_ZLIB
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312 init_opts(&opts[5], 'd', false, OPTION_ARG_TYPE_FLG,
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313 (void **)&decompress, 0, "decompress");
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314 num_options++;
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diff changeset
315 #endif
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316
117
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317 if (!scan_opts(argc, argv, 1, opts, num_options, (void *)&filename, OPTION_ARG_TYPE_STR, "file name"))
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318 {
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319 return;
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320 }
115
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321 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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322 if (hostname_set) {
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323 if (!inet_aton(hostname, (in_addr_t *)&host)) {
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diff changeset
324 printf("Invalid IP address: %s\n", hostname);
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325 return;
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diff changeset
326 }
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diff changeset
327 }
115
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328 #endif
117
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diff changeset
329 if (mode_str_set) {
132
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330 if (strncmpci(&mode_str[1], "modem", strlen(&mode_str[1])) == 0) {
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diff changeset
331 switch (tolower(mode_str[0])) {
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diff changeset
332 case 'x':
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333 mode = MODE_XMODEM;
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334 break;
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diff changeset
335 case 'y':
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336 mode = MODE_YMODEM;
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337 break;
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338 case 'z':
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339 mode = MODE_ZMODEM;
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340 break;
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341 default:
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342 printf("Invalid 'mode': %s\n", mode_str);
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343 return;
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344 }
117
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345 #ifdef CYGPKG_REDBOOT_NETWORKING
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346 } else if (strcmpci(mode_str, "tftp") == 0) {
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347 mode = MODE_TFTP;
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348 if (!have_net) {
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349 printf("TFTP mode requires a working network\n");
115
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350 return;
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351 }
117
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352 #endif
115
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353 } else {
117
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diff changeset
354 printf("Invalid 'mode': %s\n", mode_str);
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diff changeset
355 return;
115
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356 }
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357 }
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358 if ((mode == MODE_TFTP) && !filename) {
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359 printf("File name missing\n");
132
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diff changeset
360 printf("usage: load %s\n", usage);
115
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361 return;
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362 }
153
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diff changeset
363 if (base_addr_set &&
156
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364 ((base < (unsigned long)user_ram_start) ||
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diff changeset
365 (base > (unsigned long)user_ram_end))) {
143
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366 printf("Specified address (%p) is not in RAM.\n", (void*)base);
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367 return;
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368 }
157
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369 if (raw && !base_addr_set) {
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diff changeset
370 printf("Raw load requires a memory address\n");
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371 return;
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diff changeset
372 }
115
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373 #ifdef CYGPKG_REDBOOT_NETWORKING
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374 if (mode == MODE_TFTP) {
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375 res = tftp_stream_open(filename, &host, TFTP_OCTET, &err);
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376 if (res < 0) {
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377 printf("Can't load '%s': %s\n", filename, tftp_error(err));
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378 return;
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379 }
124
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diff changeset
380 redboot_getc_init(tftp_stream_read, verbose);
115
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381 }
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382 #endif
132
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diff changeset
383 else {
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diff changeset
384 res = xyzModem_stream_open(filename, mode, &err);
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385 if (res < 0) {
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diff changeset
386 printf("Can't load '%s': %s\n", filename, xyzModem_error(err));
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387 return;
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diff changeset
388 }
143
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diff changeset
389 // Suppress verbosity when using xyz modem download
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390 redboot_getc_init(xyzModem_stream_read, 0 && verbose);
115
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391 }
157
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diff changeset
392 if (raw) {
156
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diff changeset
393 #ifdef CYGPKG_COMPRESS_ZLIB
157
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diff changeset
394 if (decompress) {
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diff changeset
395 _pipe_t* p = &load_pipe;
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diff changeset
396 p->out_buf = (unsigned char*) base;
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diff changeset
397 p->out_size = 0;
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diff changeset
398 p->in_buf = _buffer;
156
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diff changeset
399
157
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diff changeset
400 err = (*_dc_init)(p);
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diff changeset
401
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diff changeset
402 while (0 == err) {
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diff changeset
403 p->in_avail = 0;
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diff changeset
404 for (i = 0; i < CYGNUM_REDBOOT_LOAD_ZLIB_BUFFER; i++) {
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diff changeset
405 res = redboot_getc();
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diff changeset
406 if (res < 0) break;
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diff changeset
407 p->in_buf[p->in_avail++] = res;
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diff changeset
408 }
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diff changeset
409 if (0 == p->in_avail) break;
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diff changeset
410
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diff changeset
411 err = (*_dc_inflate)(p);
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diff changeset
412 }
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diff changeset
413
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diff changeset
414 // Free used resources, do final translation of
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diff changeset
415 // error value.
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diff changeset
416 err = (*_dc_close)(p, err);
156
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diff changeset
417
157
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diff changeset
418 if (0 != err && p->msg)
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diff changeset
419 printf("zlib: %s\n", p->msg);
156
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diff changeset
420
157
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421 end = (unsigned long) base + p->out_size;
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422 } else // dangling block
156
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423 #endif
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424 {
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425 unsigned char *mp = (unsigned char *)base;
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426 while ((res = redboot_getc()) >= 0) {
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427 *mp++ = res;
132
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428 }
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429 err = 0;
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430 end = (unsigned long) mp;
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431 }
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432 if (0 == err)
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433 printf("Raw file loaded %p-%p\n", (void *)base, (void *)end);
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434 } else {
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435 // Read initial header - to determine file [image] type
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436 for (i = 0; i < sizeof(type); i++) {
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437 if ((res = redboot_getc()) < 0) {
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438 err = getc_info.err;
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439 break;
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440 }
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441 type[i] = res;
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442 }
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443 if (res >= 0) {
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444 redboot_getc_rewind(); // Restore header to stream
132
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445 // Treat data as some sort of executable image
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446 if (strncmp(&type[1], "ELF", 3) == 0) {
156
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447 end = load_elf_image(redboot_getc);
132
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448 } else if ((type[0] == 'S') &&
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449 ((type[1] >= '0') && (type[1] <= '9'))) {
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450 end = load_srec_image(redboot_getc, base);
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451 } else {
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452 printf("Unrecognized image type: %lx\n", *(unsigned long *)type);
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453 }
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454 }
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455 }
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456 #ifdef CYGPKG_REDBOOT_NETWORKING
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457 if (mode == MODE_TFTP) {
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458 tftp_stream_close(&err);
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459 }
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460 #endif
143
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461 if (mode != MODE_TFTP) {
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462 xyzModem_stream_close(&err);
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463 }
115
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464 return;
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465 }