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annotate packages/hal/mips/arch/current/src/redboot_linux_exec.c @ 171:42f843b391aa

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Merge from eCos master repository on 2001-07-18-03:13:25-BST
author jlarmour
date Wed, 18 Jul 2001 11:38:39 +0000
parents
children cd45958b28ff
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1 //==========================================================================
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2 //
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3 // redboot_linux_exec.c
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4 //
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5 // RedBoot exec command for Linux booting
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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): t@keshi.org
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35 // Contributors: t@keshi.org, jskov, dwmw2
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36 // Date: 2001-07-09
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37 // Purpose: RedBoot exec command for Linux booting
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38 //
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39 //####DESCRIPTIONEND####
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40 //
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41 //===========================================================================
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42
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43 #include <redboot.h>
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44
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45 #include <cyg/infra/cyg_type.h>
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46 #include <cyg/hal/hal_intr.h>
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47 #include <cyg/hal/hal_cache.h>
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48
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49 #define xstr(s) str(s)
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50 #define str(s...) #s
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51
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52 typedef struct
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53 {
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54 char *name;
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55 char *val;
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56 } t_env_var;
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57
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58 struct parmblock {
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59 t_env_var memsize;
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60 t_env_var modetty0;
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61 t_env_var ethaddr;
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62 t_env_var env_end;
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63 char *argv[2];
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64 char text[0];
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65 };
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66
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67 static void do_exec(int argc, char *argv[]);
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68 RedBoot_cmd("exec",
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69 "Execute an image",
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70 "[-b <argv addr>] [-c \"kernel command line\"] [-w <timeout>]\n"
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71 " [<entry point>]",
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72 do_exec
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73 );
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74
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75 static void
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76 do_exec(int argc, char *argv[])
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77 {
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78 cyg_uint32 entry = (cyg_uint32)entry_address?:CYGDAT_REDBOOT_MIPS_LINUX_BOOT_ENTRY;
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79 cyg_uint32 base_addr = CYGDAT_REDBOOT_MIPS_LINUX_BOOT_ARGV_ADDR;
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80 char *cmd_line = xstr(CYGDAT_REDBOOT_MIPS_LINUX_BOOT_COMMAND_LINE);
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81 bool base_addr_set, cmd_line_set, wait_time_set;
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82 int wait_time, res;
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83 char line[8];
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84
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85 struct option_info opts[3];
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86 char *pcmd;
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87 struct parmblock *pb;
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88 void (*linux)(int, char **, void *);
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89 int oldints;
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90
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91 init_opts(&opts[0], 'b', true, OPTION_ARG_TYPE_NUM,
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92 (void **)&base_addr, &base_addr_set, "base address");
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93 init_opts(&opts[1], 'w', true, OPTION_ARG_TYPE_NUM,
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94 (void **)&wait_time, (bool *)&wait_time_set, "wait timeout");
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95 init_opts(&opts[2], 'c', true, OPTION_ARG_TYPE_STR,
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96 (void **)&cmd_line, &cmd_line_set, "kernel command line");
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97
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98 if (!scan_opts(argc, argv, 1, opts, 3, (void *)&entry,
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99 OPTION_ARG_TYPE_NUM, "entry address"))
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100 return;
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101
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102 linux = (void *)entry;
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103
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104 printf("Now booting linux kernel:\n");
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105 printf(" Base address 0x%08x Entry 0x%08x\n", base_addr, entry);
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106 printf(" Cmdline : %s\n", cmd_line);
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107
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108 if (wait_time_set) {
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109 printf("About to start execution at %p - abort with ^C within %d seconds\n",
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110 (void *)entry, wait_time);
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111 res = gets(line, sizeof(line), wait_time*1000);
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112 if (res == _GETS_CTRLC) {
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113 return;
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114 }
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115 }
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116
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117 HAL_DISABLE_INTERRUPTS(oldints);
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118
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119 pb = (struct parmblock *)base_addr;
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120 pcmd = pb->text;
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121
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122 pb->memsize.name = pcmd;
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123 pcmd += sprintf(pcmd, "memsize");
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124 pb->memsize.val = ++pcmd;
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125 pcmd += sprintf(pcmd, "0x%08x", (ram_end - ram_start + 0xFFFFF) & ~0xFFFFF);
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126
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127 pb->modetty0.name = ++pcmd;
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128 pcmd += sprintf(pcmd, "modetty0");
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129 pb->modetty0.val = ++pcmd;
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130 pcmd += sprintf(pcmd, "%d,n,8,1,hw", CYGNUM_HAL_VIRTUAL_VECTOR_CHANNELS_DEFAULT_BAUD);
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131
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132 #ifdef CYGPKG_REDBOOT_NETWORKING
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133 pb->ethaddr.name = ++pcmd;
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134 pcmd += sprintf(pcmd, "ethaddr");
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135 pb->ethaddr.val = ++pcmd;
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136 pcmd += sprintf(pcmd, "%02x.%02x.%02x.%02x.%02x.%02x",
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137 __local_enet_addr[0], __local_enet_addr[1],
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138 __local_enet_addr[2], __local_enet_addr[3],
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139 __local_enet_addr[4], __local_enet_addr[5]);
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140 pb->env_end.name = NULL;
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141 pb->env_end.val = NULL;
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142 #else
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143 pb->ethaddr.name = NULL;
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144 pb->ethaddr.val = NULL;
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145 #endif
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146
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147 /* Point argv[0] at a handy `\0` */
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148 pb->argv[0] = pcmd;
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149 pb->argv[1] = ++pcmd;
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150
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151 strcpy(pcmd, cmd_line);
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152
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153 HAL_DCACHE_SYNC();
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154 HAL_ICACHE_DISABLE();
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155 HAL_DCACHE_DISABLE();
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156 HAL_DCACHE_SYNC();
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157 HAL_ICACHE_INVALIDATE_ALL();
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158 HAL_DCACHE_INVALIDATE_ALL();
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159
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160 linux(2, pb->argv, pb);
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161 }