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annotate packages/redboot/current/src/main.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
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children bd1a71e3e476
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115
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1 //==========================================================================
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2 //
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3 // main.c
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4 //
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5 // RedBoot main routine
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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 #define DEFINE_VARS
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47 #include <redboot.h>
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48 #include <cyg/hal/hal_arch.h>
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49 #include <cyg/hal/hal_intr.h>
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50 #include <cyg/hal/hal_cache.h>
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51 #include CYGHWR_MEMORY_LAYOUT_H
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52
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53 #include <cyg/hal/hal_tables.h>
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54
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55 // GDB interfaces
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56 extern void breakpoint(void);
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57
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58 // Internal functions
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59 static struct cmd *parse(char *line, int *argc, char **argv);
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60
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61 // CLI command processing (defined in this file)
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62 RedBoot_cmd("help",
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63 "Help about help?",
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64 "<topic>",
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65 do_help
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66 );
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67 RedBoot_cmd("go",
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68 "Execute code at a location",
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69 "[-w <timeout>] [entry]",
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70 do_go
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71 );
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72 RedBoot_cmd("dump",
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73 "Display (hex dump) a range of memory",
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74 "<location> [<length>]",
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75 do_dump
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76 );
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77 RedBoot_cmd("cache",
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78 "Manage machine caches",
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79 "[ON | OFF]",
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80 do_caches
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81 );
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82
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83 // Define table boundaries
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84 CYG_HAL_TABLE_BEGIN( __RedBoot_CMD_TAB__, RedBoot_commands );
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85 CYG_HAL_TABLE_END( __RedBoot_CMD_TAB_END__, RedBoot_commands );
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86 extern struct cmd __RedBoot_CMD_TAB__[], __RedBoot_CMD_TAB_END__;
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87
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88 CYG_HAL_TABLE_BEGIN( __RedBoot_INIT_TAB__, RedBoot_inits );
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89 CYG_HAL_TABLE_END( __RedBoot_INIT_TAB_END__, RedBoot_inits );
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90 extern void_fun_ptr __RedBoot_INIT_TAB__[], __RedBoot_INIT_TAB_END__;
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91
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92 //
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93 // This is the main entry point for RedBoot
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94 //
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95 void
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96 cyg_start(void)
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97 {
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98 int res;
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99 bool prompt = true;
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100 char line[256];
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101 struct cmd *cmd;
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102 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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103 void_fun_ptr *init_fun;
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104
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105 CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_HAL_VIRTUAL_VECTOR_CONSOLE_CHANNEL);
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106 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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107 console_selected = false;
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108 #endif
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109 CYGACC_CALL_IF_DELAY_US(2*100000);
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110
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111 ram_start = (unsigned char *)CYGMEM_REGION_ram;
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112 ram_end = (unsigned char *)(CYGMEM_REGION_ram+CYGMEM_REGION_ram_SIZE);
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113
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114 printf("\nRedBoot(tm) debug environment - built %s, %s\n", __TIME__, __DATE__);
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115 printf("Copyright (C) 2000, Red Hat, Inc.\n\n");
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116 printf("RAM: %p-%p\n", ram_start, ram_end);
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117
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118 config_ok = false;
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119
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120 for (init_fun = __RedBoot_INIT_TAB__; init_fun != &__RedBoot_INIT_TAB_END__; init_fun++) {
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121 (*init_fun)();
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122 }
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123
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124 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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125 // Give the guy a chance to abort any boot script
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126 if (script) {
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127 unsigned char *hold_script = script;
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128 printf("== Executing boot script in %d seconds - enter ^C to abort\n", script_timeout);
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129 script = (unsigned char *)0;
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130 res = gets(line, sizeof(line), script_timeout*1000);
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131 if (res == -2) {
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132 script = (unsigned char *)0; // Disable script
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133 } else {
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134 script = hold_script; // Re-enable script
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135 }
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136 }
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137 #endif
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138
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139 while (true) {
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140 if (prompt) {
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141 printf("RedBoot> ");
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142 prompt = false;
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143 }
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144 res = gets(line, sizeof(line), 250);
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145 if (res < 0) {
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146 // No input arrived
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147 #ifdef CYGPKG_REDBOOT_NETWORKING
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148 if (have_net) {
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149 // Check for incoming TCP debug connection
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150 net_io_test();
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151 }
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152 #endif
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153 } else {
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154 if (res == 0) {
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155 // Special case of '$' - need to start GDB protocol
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156 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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157 breakpoint(); // Get GDB stubs started, with a proper environment, etc.
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158 } else {
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159 if (strlen(line) > 0) {
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160 if ((cmd = parse(line, &argc, &argv[0])) != (struct cmd *)0) {
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161 (cmd->fun)(argc, argv);
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162 } else {
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163 printf("Illegal command: %s\n", line);
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164 }
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165 }
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166 prompt = true;
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167 }
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168 }
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169 }
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170 }
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171
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172 //
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173 // Scan through an input line and break it into "arguments". These
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174 // are space delimited strings. Return a structure which points to
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175 // the strings, similar to a Unix program.
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176 // Note: original input is destroyed by replacing the delimiters with
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177 // null ('\0') characters for ease of use.
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178 //
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179 struct cmd *
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180 parse(char *line, int *argc, char **argv)
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181 {
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182 char *cp = line;
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183 int indx = 0;
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184
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185 while (*cp) {
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186 // Skip leading spaces
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187 while (*cp && *cp == ' ') cp++;
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188 if (!*cp) {
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189 break; // Line ended with a string of spaces
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190 }
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191 argv[indx++] = cp;
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192 while (*cp) {
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193 if (*cp == ' ') {
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194 *cp++ = '\0';
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195 break;
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196 } else if (*cp == '"') {
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197 // Swallow quote, scan till following one
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198 if (argv[indx-1] == cp) {
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199 argv[indx-1] = ++cp;
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200 }
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201 while (*cp && *cp != '"') cp++;
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202 if (!*cp) {
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203 printf("Unbalanced string!\n");
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204 } else {
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205 *cp++ = '\0';
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206 break;
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207 }
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208 } else {
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209 cp++;
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210 }
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211 }
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212 }
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213 *argc = indx;
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214 return cmd_search(__RedBoot_CMD_TAB__, &__RedBoot_CMD_TAB_END__, argv[0]);
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215 }
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216
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217 //
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218 // Search through a list of commands
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219 //
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220 struct cmd *
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221 cmd_search(struct cmd *tab, struct cmd *tabend, char *arg)
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222 {
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223 int cmd_len;
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224 struct cmd *cmd, *cmd2;
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225 // Search command table
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226 cmd_len = strlen(arg);
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227 cmd = tab;
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228 while (cmd != tabend) {
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229 if (strncmpci(arg, cmd->str, cmd_len) == 0) {
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230 if (strlen(cmd->str) > cmd_len) {
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231 // Check for ambiguous commands here
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232 // Note: If there are commands which are not length-unique
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233 // then this check will be invalid. E.g. "du" and "dump"
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234 bool first = true;
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235 cmd2 = tab;
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236 while (cmd2 != tabend) {
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237 if ((cmd != cmd2) &&
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238 (strncmpci(arg, cmd2->str, cmd_len) == 0)) {
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239 if (first) {
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240 printf("Ambiguous command '%s', choices are: %s", arg, cmd->str);
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241 first = false;
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242 }
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243 printf(" %s", cmd2->str);
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244 }
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245 cmd2++;
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246 }
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247 if (!first) {
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248 // At least one ambiguity found - fail the lookup
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249 printf("\n");
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250 return (struct cmd *)0;
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251 }
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252 }
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253 return cmd;
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254 }
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255 cmd++;
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256 }
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257 return (struct cmd *)0;
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258 }
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259
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260 void
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261 cmd_usage(struct cmd *tab, struct cmd *tabend, char *prefix)
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262 {
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263 struct cmd *cmd;
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264 printf("Usage:\n"); for (cmd = tab; cmd != tabend; cmd++) {
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265 printf(" %s%s %s\n", prefix, cmd->str, cmd->usage);
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266 }
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267 }
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268
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269 // Option processing
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270
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271 // Initialize option table entry (required because these entries
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272 // may have dynamic contents, thus cannot be statically initialized)
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273 //
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274 void
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275 init_opts(struct option_info *opts, char flag, bool takes_arg,
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276 int arg_type, void **arg, bool *arg_set, char *name)
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277 {
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278 opts->flag = flag;
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279 opts->takes_arg = takes_arg;
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280 opts->arg_type = arg_type,
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281 opts->arg = arg;
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282 opts->arg_set = arg_set;
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283 opts->name = name;
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284 }
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285
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286 //
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287 // Scan command line arguments (argc/argv), processing options, etc.
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288 //
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diff changeset
289 bool
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diff changeset
290 scan_opts(int argc, char *argv[], int first,
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diff changeset
291 struct option_info *opts, int num_opts,
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diff changeset
292 void **def_arg, int def_arg_type, char *def_descr)
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293 {
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diff changeset
294 bool ret = true;
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diff changeset
295 bool flag_ok;
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diff changeset
296 bool def_arg_set = false;
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diff changeset
297 int i, j;
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diff changeset
298 char c, *s;
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diff changeset
299 struct option_info *opt;
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diff changeset
300
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diff changeset
301 if (def_arg && (def_arg_type == OPTION_ARG_TYPE_STR)) {
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302 *def_arg = (char *)0;
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303 }
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diff changeset
304 opt = opts;
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305 for (j = 0; j < num_opts; j++, opt++) {
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306 *opt->arg_set = false;
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diff changeset
307 if (!opt->takes_arg) {
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diff changeset
308 *(int *)opt->arg = 0;
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diff changeset
309 }
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310 }
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diff changeset
311 for (i = first; i < argc; i++) {
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diff changeset
312 if (argv[i][0] == '-') {
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313 c = argv[i][1];
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314 flag_ok = false;
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315 opt = opts;
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316 for (j = 0; j < num_opts; j++, opt++) {
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317 if (c == opt->flag) {
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diff changeset
318 if (*opt->arg_set) {
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319 printf("%s alread set\n", opt->name);
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320 ret = false;
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321 }
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diff changeset
322 if (opt->takes_arg) {
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diff changeset
323 if (argv[i][2] == '=') {
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diff changeset
324 s = &argv[i][3];
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diff changeset
325 } else {
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diff changeset
326 s = argv[i+1];
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diff changeset
327 i++;
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328 }
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diff changeset
329 switch (opt->arg_type) {
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diff changeset
330 case OPTION_ARG_TYPE_NUM:
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331 if (!parse_num(s, (unsigned long *)opt->arg, 0, 0)) {
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332 printf("invalid number '%s' for %s\n", s, opt->name);
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333 ret = false;
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334 }
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diff changeset
335 break;
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diff changeset
336 case OPTION_ARG_TYPE_STR:
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diff changeset
337 *opt->arg = s;
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338 break;
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339 }
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340 *opt->arg_set = true;
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341 } else {
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342 *(int *)opt->arg = *(int *)opt->arg + 1;
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343 }
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diff changeset
344 flag_ok = true;
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345 break;
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346 }
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diff changeset
347 }
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diff changeset
348 if (!flag_ok) {
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diff changeset
349 printf("invalid flag '%c'\n", c);
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350 ret = false;
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351 }
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352 } else {
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diff changeset
353 if (def_arg) {
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diff changeset
354 if (def_arg_set) {
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diff changeset
355 printf("%s already set\n", def_descr);
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356 ret = false;
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357 }
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diff changeset
358 switch (def_arg_type) {
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diff changeset
359 case OPTION_ARG_TYPE_NUM:
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diff changeset
360 if (!parse_num(argv[i], (unsigned long *)def_arg, 0, 0)) {
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361 printf("invalid number '%s' for %s\n", argv[i], def_descr);
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362 ret = false;
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363 }
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diff changeset
364 break;
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365 case OPTION_ARG_TYPE_STR:
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diff changeset
366 *def_arg = argv[i];
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diff changeset
367 break;
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368 }
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diff changeset
369 def_arg_set = true;
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diff changeset
370 } else {
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diff changeset
371 printf("no default/non-flag arguments supported\n");
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372 ret = false;
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diff changeset
373 }
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parents:
diff changeset
374 }
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parents:
diff changeset
375 }
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diff changeset
376 return ret;
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diff changeset
377 }
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jlarmour
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diff changeset
378
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jlarmour
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diff changeset
379 //
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jlarmour
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diff changeset
380 // Parse (scan) a number
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diff changeset
381 //
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diff changeset
382 bool
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diff changeset
383 parse_num(char *s, unsigned long *val, char **es, char *delim)
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diff changeset
384 {
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diff changeset
385 bool first = true;
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diff changeset
386 int radix = 10;
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diff changeset
387 char c;
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diff changeset
388 unsigned long result = 0;
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diff changeset
389 int digit;
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jlarmour
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diff changeset
390
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diff changeset
391 while (*s == ' ') s++;
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diff changeset
392 while (*s) {
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diff changeset
393 if (first && (s[0] == '0') && (tolower(s[1]) == 'x')) {
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diff changeset
394 radix = 16;
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diff changeset
395 s += 2;
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diff changeset
396 }
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diff changeset
397 first = false;
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diff changeset
398 c = *s++;
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diff changeset
399 if (_is_hex(c) && ((digit = _from_hex(c)) < radix)) {
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jlarmour
parents:
diff changeset
400 // Valid digit
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diff changeset
401 result = (result * radix) + digit;
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diff changeset
402 } else {
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jlarmour
parents:
diff changeset
403 if (delim != (char *)0) {
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jlarmour
parents:
diff changeset
404 // See if this character is one of the delimiters
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jlarmour
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diff changeset
405 char *dp = delim;
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jlarmour
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diff changeset
406 while (*dp && (c != *dp)) dp++;
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jlarmour
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diff changeset
407 if (*dp) break; // Found a good delimiter
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jlarmour
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diff changeset
408 }
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jlarmour
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diff changeset
409 return false; // Malformatted number
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jlarmour
parents:
diff changeset
410 }
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jlarmour
parents:
diff changeset
411 }
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jlarmour
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diff changeset
412 *val = result;
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jlarmour
parents:
diff changeset
413 if (es != (char **)0) {
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diff changeset
414 *es = s;
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jlarmour
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diff changeset
415 }
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diff changeset
416 return true;
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jlarmour
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diff changeset
417 }
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jlarmour
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diff changeset
418
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jlarmour
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diff changeset
419 bool
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jlarmour
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diff changeset
420 parse_bool(char *s, bool *val)
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jlarmour
parents:
diff changeset
421 {
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jlarmour
parents:
diff changeset
422 while (*s == ' ') s++;
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jlarmour
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diff changeset
423 if ((*s == 't') || (*s == 'T')) {
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jlarmour
parents:
diff changeset
424 *val = true;
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jlarmour
parents:
diff changeset
425 } else
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jlarmour
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diff changeset
426 if ((*s == 'f') || (*s == 'F')) {
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jlarmour
parents:
diff changeset
427 *val = false;
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jlarmour
parents:
diff changeset
428 } else {
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jlarmour
parents:
diff changeset
429 return false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
430 }
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jlarmour
parents:
diff changeset
431 return true;
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jlarmour
parents:
diff changeset
432 }
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jlarmour
parents:
diff changeset
433
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
434
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
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diff changeset
435 void
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436 do_caches(int argc, char *argv[])
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437 {
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438 unsigned long oldints;
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439 if (argc == 2) {
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440 if (strcmpci(argv[1], "on") == 0) {
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441 HAL_DISABLE_INTERRUPTS(oldints);
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442 HAL_ICACHE_ENABLE();
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443 HAL_DCACHE_ENABLE();
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444 HAL_RESTORE_INTERRUPTS(oldints);
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445 } else if (strcmpci(argv[1], "off") == 0) {
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446 HAL_DISABLE_INTERRUPTS(oldints);
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447 HAL_DCACHE_SYNC();
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448 HAL_ICACHE_DISABLE();
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449 HAL_DCACHE_DISABLE();
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450 HAL_DCACHE_SYNC();
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451 HAL_ICACHE_INVALIDATE_ALL();
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452 HAL_DCACHE_INVALIDATE_ALL();
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453 HAL_RESTORE_INTERRUPTS(oldints);
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454 } else {
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455 printf("Invalid cache mode: %s\n", argv[1]);
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456 }
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457 } else {
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458 printf("caches ?\n");
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459 }
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460 }
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461
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462
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463 void
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464 do_help(int argc, char *argv[])
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465 {
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466 struct cmd *cmd;
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467
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468 cmd = __RedBoot_CMD_TAB__;
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469 while (cmd != &__RedBoot_CMD_TAB_END__) {
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470 printf("%s\n %s %s\n", cmd->help, cmd->str, cmd->usage);
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471 cmd++;
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472 }
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473 return;
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474 }
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475
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476 void
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477 do_dump(int argc, char *argv[])
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diff changeset
478 {
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479 unsigned long base, len;
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diff changeset
480
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481 if (argc < 2) {
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482 printf("Dump what [location]?\n");
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483 return;
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484 }
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485 if (!parse_num(argv[1], &base, 0, 0)) {
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486 printf("Invalid start address: %s\n", argv[1]);
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487 return;
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488 }
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489 if (argc > 2) {
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490 if (!parse_num(argv[2], &len, 0, 0)) {
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491 printf("Invalid length/end address: %s\n", argv[2]);
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492 return;
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493 }
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494 } else {
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495 len = 32;
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496 }
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497 dump_buf((void *)base, len);
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498 }
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499
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diff changeset
500 void
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501 do_go(int argc, char *argv[])
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diff changeset
502 {
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503 typedef void code_fun(void);
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504 unsigned long entry;
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505 unsigned long oldints;
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506 code_fun *fun;
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507 bool wait_time_set;
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508 int wait_time, res;
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509 struct option_info opts[1];
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510 char line[8];
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511
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512 entry = (unsigned long)entry_address; // Default from last 'load' operation
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513 init_opts(&opts[0], 'w', true, OPTION_ARG_TYPE_NUM,
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514 (void **)&wait_time, (bool *)&wait_time_set, "wait timeout");
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515 if (!scan_opts(argc, argv, 1, opts, 1, (void *)&entry, OPTION_ARG_TYPE_NUM, "starting address"))
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516 {
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517 return;
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518 }
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diff changeset
519 if (wait_time_set) {
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diff changeset
520 printf("About to start execution at %p - abort with ^C within %d seconds\n",
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521 (void *)entry, wait_time);
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522 res = gets(line, sizeof(line), wait_time*1000);
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523 if (res == -2) {
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524 return;
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525 }
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526 }
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527 fun = (code_fun *)entry;
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528 HAL_DISABLE_INTERRUPTS(oldints);
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529 HAL_DCACHE_SYNC();
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530 HAL_ICACHE_DISABLE();
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531 HAL_DCACHE_DISABLE();
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532 HAL_DCACHE_SYNC();
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533 HAL_ICACHE_INVALIDATE_ALL();
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534 HAL_DCACHE_INVALIDATE_ALL();
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535 (*fun)();
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536 }