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
|
/*
* kexec: Linux boots Linux
*
* modified from kexec-ppc.c
*
*/
#define _GNU_SOURCE
#include <stddef.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include "../../kexec.h"
#include "../../kexec-syscall.h"
#include "kexec-arm.h"
#include <arch/options.h>
#include "../../fs2dt.h"
#include "iomem.h"
#define MAX_MEMORY_RANGES 64
#define MAX_LINE 160
static struct memory_range memory_range[MAX_MEMORY_RANGES];
/* Return a sorted list of available memory ranges. */
int get_memory_ranges(struct memory_range **range, int *ranges,
unsigned long UNUSED(kexec_flags))
{
const char *iomem = proc_iomem();
int memory_ranges = 0;
char line[MAX_LINE];
FILE *fp;
fp = fopen(iomem, "r");
if (!fp) {
fprintf(stderr, "Cannot open %s: %s\n",
iomem, strerror(errno));
return -1;
}
while(fgets(line, sizeof(line), fp) != 0) {
unsigned long long start, end;
char *str;
int type;
int consumed;
int count;
if (memory_ranges >= MAX_MEMORY_RANGES)
break;
count = sscanf(line, "%llx-%llx : %n",
&start, &end, &consumed);
if (count != 2)
continue;
str = line + consumed;
if (memcmp(str, SYSTEM_RAM_BOOT, strlen(SYSTEM_RAM_BOOT)) == 0 ||
memcmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0) {
type = RANGE_RAM;
}
else if (memcmp(str, "reserved\n", 9) == 0) {
type = RANGE_RESERVED;
}
else {
continue;
}
memory_range[memory_ranges].start = start;
memory_range[memory_ranges].end = end;
memory_range[memory_ranges].type = type;
memory_ranges++;
}
fclose(fp);
*range = memory_range;
*ranges = memory_ranges;
dbgprint_mem_range("MEMORY RANGES", *range, *ranges);
return 0;
}
/* Supported file types and callbacks */
struct file_type file_type[] = {
/* uImage is probed before zImage because the latter also accepts
uncompressed images. */
{"uImage", uImage_arm_probe, uImage_arm_load, zImage_arm_usage},
{"zImage", zImage_arm_probe, zImage_arm_load, zImage_arm_usage},
};
int file_types = sizeof(file_type) / sizeof(file_type[0]);
void arch_usage(void)
{
printf(" --image-size=<size>\n"
" Specify the assumed total image size of\n"
" the kernel that is about to be loaded,\n"
" including the .bss section, as reported\n"
" by 'arm-linux-size vmlinux'. If not\n"
" specified, this value is implicitly set\n"
" to the compressed images size * 4.\n"
" --dt-no-old-root\n"
" do not reuse old kernel root= param.\n"
" while creating flatten device tree.\n");
}
int arch_process_options(int argc, char **argv)
{
/* We look for all options so getopt_long doesn't start reordering
* argv[] before file_type[n].load() gets a look in.
*/
static const struct option options[] = {
KEXEC_ALL_OPTIONS
{ 0, 0, NULL, 0 },
};
static const char short_options[] = KEXEC_ALL_OPT_STR;
int opt;
opterr = 0; /* Don't complain about unrecognized options here */
while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
switch(opt) {
case OPT_DT_NO_OLD_ROOT:
dt_no_old_root = 1;
break;
default:
break;
}
}
/* Reset getopt for the next pass; called in other source modules */
opterr = 1;
optind = 1;
return 0;
}
const struct arch_map_entry arches[] = {
{ "arm", KEXEC_ARCH_ARM },
{ NULL, 0 },
};
int arch_compat_trampoline(struct kexec_info *UNUSED(info))
{
return 0;
}
void arch_update_purgatory(struct kexec_info *UNUSED(info))
{
}
/* return 1 if /sys/firmware/fdt exists, otherwise return 0 */
int have_sysfs_fdt(void)
{
return !access(SYSFS_FDT, F_OK);
}
|
