1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* kexec: Linux boots Linux
*
* Copyright (C) 2003,2004 Eric Biederman (ebiederm@xmission.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation (version 2 of the License).
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stddef.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <limits.h>
#include <stdlib.h>
#include <getopt.h>
#include "../../kexec.h"
#include "../../kexec-elf.h"
#include "../../kexec-syscall.h"
#include "kexec-x86_64.h"
#include "../i386/crashdump-x86.h"
#include <arch/options.h>
struct file_type file_type[] = {
{ "elf-x86_64", elf_x86_64_probe, elf_x86_64_load, elf_x86_64_usage },
{ "multiboot-x86", multiboot_x86_probe, multiboot_x86_load,
multiboot_x86_usage },
{ "elf-x86", elf_x86_probe, elf_x86_load, elf_x86_usage },
{ "bzImage64", bzImage64_probe, bzImage64_load, bzImage64_usage },
{ "bzImage", bzImage_probe, bzImage_load, bzImage_usage },
{ "beoboot-x86", beoboot_probe, beoboot_load, beoboot_usage },
{ "nbi-x86", nbi_probe, nbi_load, nbi_usage },
};
int file_types = sizeof(file_type)/sizeof(file_type[0]);
void arch_usage(void)
{
printf(
" --reset-vga Attempt to reset a standard vga device\n"
" --serial=<port> Specify the serial port for debug output\n"
" --serial-baud=<baud_rate> Specify the serial port baud rate\n"
" --console-vga Enable the vga console\n"
" --console-serial Enable the serial console\n"
" --pass-memmap-cmdline Pass memory map via command line in kexec on panic case\n"
" --noefi Disable efi support\n"
" --reuse-video-type Reuse old boot time video type blindly\n"
);
}
struct arch_options_t arch_options = {
.reset_vga = 0,
.serial_base = 0x3f8,
.serial_baud = 0,
.console_vga = 0,
.console_serial = 0,
.core_header_type = CORE_TYPE_ELF64,
.pass_memmap_cmdline = 0,
.noefi = 0,
.reuse_video_type = 0,
};
int arch_process_options(int argc, char **argv)
{
static const struct option options[] = {
KEXEC_ALL_OPTIONS
{ 0, 0, NULL, 0 },
};
static const char short_options[] = KEXEC_ALL_OPT_STR;
int opt;
unsigned long value;
char *end;
opterr = 0; /* Don't complain about unrecognized options here */
while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
switch(opt) {
default:
break;
case OPT_RESET_VGA:
arch_options.reset_vga = 1;
break;
case OPT_CONSOLE_VGA:
arch_options.console_vga = 1;
break;
case OPT_CONSOLE_SERIAL:
arch_options.console_serial = 1;
break;
case OPT_SERIAL:
value = ULONG_MAX;
if (strcmp(optarg, "ttyS0") == 0) {
value = 0x3f8;
}
else if (strcmp(optarg, "ttyS1") == 0) {
value = 0x2f8;
}
else if (strncmp(optarg, "0x", 2) == 0) {
value = strtoul(optarg +2, &end, 16);
if (*end != '\0') {
value = ULONG_MAX;
}
}
if (value >= 65536) {
fprintf(stderr, "Bad serial port base '%s'\n",
optarg);
usage();
return -1;
}
arch_options.serial_base = value;
break;
case OPT_SERIAL_BAUD:
value = strtoul(optarg, &end, 0);
if ((value > 115200) || ((115200 %value) != 0) ||
(value < 9600) || (*end))
{
fprintf(stderr, "Bad serial port baud rate '%s'\n",
optarg);
usage();
return -1;
}
arch_options.serial_baud = value;
break;
case OPT_PASS_MEMMAP_CMDLINE:
arch_options.pass_memmap_cmdline = 1;
break;
case OPT_NOEFI:
arch_options.noefi = 1;
break;
case OPT_REUSE_VIDEO_TYPE:
arch_options.reuse_video_type = 1;
break;
}
}
/* Reset getopt for the next pass; called in other source modules */
opterr = 1;
optind = 1;
return 0;
}
const struct arch_map_entry arches[] = {
{ "x86_64", KEXEC_ARCH_X86_64 },
{ NULL, 0 },
};
int arch_compat_trampoline(struct kexec_info *UNUSED(info))
{
return 0;
}
void arch_update_purgatory(struct kexec_info *info)
{
uint8_t panic_kernel = 0;
elf_rel_set_symbol(&info->rhdr, "reset_vga",
&arch_options.reset_vga, sizeof(arch_options.reset_vga));
elf_rel_set_symbol(&info->rhdr, "serial_base",
&arch_options.serial_base, sizeof(arch_options.serial_base));
elf_rel_set_symbol(&info->rhdr, "serial_baud",
&arch_options.serial_baud, sizeof(arch_options.serial_baud));
elf_rel_set_symbol(&info->rhdr, "console_vga",
&arch_options.console_vga, sizeof(arch_options.console_vga));
elf_rel_set_symbol(&info->rhdr, "console_serial",
&arch_options.console_serial, sizeof(arch_options.console_serial));
elf_rel_set_symbol(&info->rhdr, "backup_src_start",
&info->backup_src_start, sizeof(info->backup_src_start));
elf_rel_set_symbol(&info->rhdr, "backup_src_size",
&info->backup_src_size, sizeof(info->backup_src_size));
if (info->kexec_flags & KEXEC_ON_CRASH) {
panic_kernel = 1;
elf_rel_set_symbol(&info->rhdr, "backup_start",
&info->backup_start, sizeof(info->backup_start));
}
elf_rel_set_symbol(&info->rhdr, "panic_kernel",
&panic_kernel, sizeof(panic_kernel));
}
|
