1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 *
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26 * $Id: bootinfo.c,v 1.1.1.1 1998/08/21 03:17:41 msmith Exp $
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26 * $Id: bootinfo.c,v 1.2 1998/09/03 02:10:09 msmith Exp $ |
27 */ 28 29#include <sys/reboot.h> 30#include <stand.h> 31#include "bootstrap.h" 32 33 34/* 35 * Return a 'boothowto' value corresponding to the kernel arguments in 36 * (kargs) and any relevant environment variables. 37 */ 38static struct 39{ 40 char *ev; 41 int mask; 42} howto_names[] = { 43 {"boot_askname", RB_ASKNAME}, 44 {"boot_userconfig", RB_CONFIG}, 45 {"boot_ddb", RB_KDB}, 46 {"boot_gdb", RB_GDB}, 47 {"boot_single", RB_SINGLE}, 48 {"boot_verbose", RB_VERBOSE}, 49 {NULL, 0} 50}; 51 52int 53bi_getboothowto(char *kargs) 54{ 55 char *cp; 56 int howto; 57 int active; 58 int i; 59
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60 /* Parse kargs */ |
61 howto = 0; 62 if (kargs != NULL) { 63 cp = kargs; 64 active = 0; 65 while (*cp != 0) { 66 if (!active && (*cp == '-')) { 67 active = 1; 68 } else if (active) 69 switch (*cp) { 70 case 'a': 71 howto |= RB_ASKNAME; 72 break; 73 case 'c': 74 howto |= RB_CONFIG; 75 break; 76 case 'd': 77 howto |= RB_KDB; 78 break; 79 case 'g': 80 howto |= RB_GDB; 81 break; 82 case 'h': 83 howto |= RB_SERIAL; 84 break; 85 case 'r': 86 howto |= RB_DFLTROOT; 87 break; 88 case 's': 89 howto |= RB_SINGLE; 90 break; 91 case 'v': 92 howto |= RB_VERBOSE; 93 break; 94 default: 95 active = 0; 96 break; 97 }
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98 active = 0; 99 cp++; |
100 }
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98 cp++;
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101 }
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102 /* get equivalents from the environment */ |
103 for (i = 0; howto_names[i].ev != NULL; i++) 104 if (getenv(howto_names[i].ev) != NULL) 105 howto |= howto_names[i].mask; 106 if (!strcmp(getenv("console"), "comconsole")) 107 howto |= RB_SERIAL; 108 return(howto); 109} 110 111/* 112 * Copy the environment into the load area starting at (addr). 113 * Each variable is formatted as <name>=<value>, with a single nul 114 * separating each variable, and a double nul terminating the environment. 115 */ 116vm_offset_t 117bi_copyenv(vm_offset_t addr) 118{ 119 struct env_var *ep; 120 121 /* traverse the environment */ 122 for (ep = environ; ep != NULL; ep = ep->ev_next) { 123 vpbcopy(ep->ev_name, addr, strlen(ep->ev_name)); 124 addr += strlen(ep->ev_name); 125 vpbcopy("=", addr, 1); 126 addr++; 127 if (ep->ev_value != NULL) { 128 vpbcopy(ep->ev_value, addr, strlen(ep->ev_value)); 129 addr += strlen(ep->ev_value); 130 } 131 vpbcopy("", addr, 1); 132 addr++; 133 } 134 vpbcopy("", addr, 1); 135 addr++; 136} 137 138/* 139 * Copy module-related data into the load area, where it can be 140 * used as a directory for loaded modules. 141 * 142 * Module data is presented in a self-describing format. Each datum
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140 * is preceeded by a 16-bit identifier and a 16-bit size field.
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143 * is preceeded by a 32-bit identifier and a 32-bit size field. |
144 * 145 * Currently, the following data are saved: 146 * 147 * MOD_NAME (variable) module name (string) 148 * MOD_TYPE (variable) module type (string) 149 * MOD_ADDR sizeof(vm_offset_t) module load address 150 * MOD_SIZE sizeof(size_t) module size 151 * MOD_METADATA (variable) type-specific metadata 152 */ 153#define MOD_STR(t, a, s) { \ 154 u_int32_t ident = (t << 16) + strlen(s) + 1; \ 155 vpbcopy(&ident, a, sizeof(ident)); \ 156 a += sizeof(ident); \ 157 vpbcopy(s, a, strlen(s) + 1); \ 158 a += strlen(s) + 1; \ 159} 160 161#define MOD_NAME(a, s) MOD_STR(MODINFO_NAME, a, s) 162#define MOD_TYPE(a, s) MOD_STR(MODINFO_TYPE, a, s) 163 164#define MOD_VAR(t, a, s) { \ 165 u_int32_t ident = (t << 16) + sizeof(s); \ 166 vpbcopy(&ident, a, sizeof(ident)); \ 167 a += sizeof(ident); \ 168 vpbcopy(&s, a, sizeof(s)); \ 169 a += sizeof(s); \ 170} 171 172#define MOD_ADDR(a, s) MOD_VAR(MODINFO_ADDR, a, s) 173#define MOD_SIZE(a, s) MOD_VAR(MODINFO_SIZE, a, s) 174 175#define MOD_METADATA(a, mm) { \ 176 u_int32_t ident = ((MODINFO_METADATA | mm->md_type) << 16) + mm->md_size; \ 177 vpbcopy(&ident, a, sizeof(ident)); \ 178 a += sizeof(ident); \ 179 vpbcopy(mm->md_data, a, mm->md_size); \ 180 a += mm->md_size; \ 181} 182
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183#define MOD_END(a) { \ 184 u_int32_t ident = 0; \ 185 vpbcopy(&ident, a, sizeof(ident)); \ 186 a += sizeof(ident); \ 187 vpbcopy(&ident, a, sizeof(ident)); \ 188 a += sizeof(ident); \ 189} 190 |
191vm_offset_t 192bi_copymodules(vm_offset_t addr) 193{ 194 struct loaded_module *mp; 195 struct module_metadata *md; 196 197 /* start with the first module on the list, should be the kernel */ 198 for (mp = mod_findmodule(NULL, NULL); mp != NULL; mp = mp->m_next) { 199
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189 MOD_NAME(addr, mp->m_name);
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200 MOD_NAME(addr, mp->m_name); /* this field must come first */ |
201 MOD_TYPE(addr, mp->m_type); 202 MOD_ADDR(addr, mp->m_addr); 203 MOD_SIZE(addr, mp->m_size); 204 for (md = mp->m_metadata; md != NULL; md = md->md_next) 205 if (!(md->md_type & MODINFOMD_NOCOPY)) 206 MOD_METADATA(addr, md); 207 }
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208 MOD_END(addr); |
209 return(addr); 210}
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