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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/*
* (C) Copyright 2000-2006
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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.
*
*/
/*
* Boot support
*/
#include <common.h>
#include <driver.h>
#include <command.h>
#include <image.h>
#include <malloc.h>
#include <environment.h>
#include <asm/byteorder.h>
#include <xfuncs.h>
#include <getopt.h>
#include <fcntl.h>
#include <fs.h>
#include <errno.h>
#include <boot.h>
#include <of.h>
#include <rtc.h>
#include <init.h>
#include <of.h>
#include <magicvar.h>
#include <uncompress.h>
#include <memory.h>
#include <filetype.h>
#include <binfmt.h>
#include <globalvar.h>
#include <magicvar.h>
#include <asm-generic/memory_layout.h>
/*
* Additional oftree size for the fixed tree
*/
#define OFTREE_SIZE_INCREASE 0x8000
static char *bootm_image_name_and_no(const char *name, int *no)
{
char *at, *ret;
if (!name || !*name)
return NULL;
*no = 0;
ret = xstrdup(name);
at = strchr(ret, '@');
if (!at)
return ret;
*at++ = 0;
*no = simple_strtoul(at, NULL, 10);
return ret;
}
#define BOOTM_OPTS_COMMON "ca:e:vo:f"
#ifdef CONFIG_CMD_BOOTM_INITRD
#define BOOTM_OPTS BOOTM_OPTS_COMMON "L:r:"
#else
#define BOOTM_OPTS BOOTM_OPTS_COMMON
#endif
static int do_bootm(int argc, char *argv[])
{
int opt;
struct image_data data;
int ret = 1;
const char *oftree = NULL, *initrd_file = NULL, *os_file = NULL;
memset(&data, 0, sizeof(struct image_data));
data.initrd_address = UIMAGE_INVALID_ADDRESS;
data.os_address = UIMAGE_SOME_ADDRESS;
data.verify = 0;
data.verbose = 0;
oftree = getenv("global.bootm.oftree");
os_file = getenv("global.bootm.image");
if (IS_ENABLED(CONFIG_CMD_BOOTM_INITRD))
initrd_file = getenv("global.bootm.initrd");
while ((opt = getopt(argc, argv, BOOTM_OPTS)) > 0) {
switch(opt) {
case 'c':
data.verify = 1;
break;
#ifdef CONFIG_CMD_BOOTM_INITRD
case 'L':
data.initrd_address = simple_strtoul(optarg, NULL, 0);
break;
case 'r':
initrd_file = optarg;
break;
#endif
case 'a':
data.os_address = simple_strtoul(optarg, NULL, 0);
break;
case 'e':
data.os_entry = simple_strtoul(optarg, NULL, 0);
break;
case 'v':
data.verbose++;
break;
case 'o':
oftree = optarg;
break;
case 'f':
data.force = 1;
break;
default:
break;
}
}
if (optind != argc)
os_file = argv[optind];
if (!os_file || !*os_file) {
printf("no boot image given\n");
goto err_out;
}
if (initrd_file && !*initrd_file)
initrd_file = NULL;
if (oftree && !*oftree)
oftree = NULL;
data.os_file = bootm_image_name_and_no(os_file, &data.os_num);
data.oftree_file = bootm_image_name_and_no(oftree, &data.oftree_num);
data.initrd_file = bootm_image_name_and_no(initrd_file, &data.initrd_num);
ret = bootm_boot(&data);
printf("handler failed with %s\n", strerror(-ret));
err_out:
free(data.initrd_file);
free(data.os_file);
return 1;
}
static int bootm_init(void)
{
globalvar_add_simple("bootm.image");
globalvar_add_simple("bootm.oftree");
if (IS_ENABLED(CONFIG_CMD_BOOTM_INITRD))
globalvar_add_simple("bootm.initrd");
return 0;
}
late_initcall(bootm_init);
BAREBOX_CMD_HELP_START(bootm)
BAREBOX_CMD_HELP_USAGE("bootm [OPTIONS] image\n")
BAREBOX_CMD_HELP_SHORT("Boot an application image.\n")
BAREBOX_CMD_HELP_OPT ("-c", "crc check uImage data\n")
#ifdef CONFIG_CMD_BOOTM_INITRD
BAREBOX_CMD_HELP_OPT ("-r <initrd>","specify an initrd image\n")
BAREBOX_CMD_HELP_OPT ("-L <load addr>","specify initrd load address\n")
#endif
BAREBOX_CMD_HELP_OPT ("-a <load addr>","specify os load address\n")
BAREBOX_CMD_HELP_OPT ("-e <ofs>","entry point to the image relative to start (0)\n")
#ifdef CONFIG_OFTREE
BAREBOX_CMD_HELP_OPT ("-o <oftree>","specify oftree\n")
#endif
#ifdef CONFIG_CMD_BOOTM_VERBOSE
BAREBOX_CMD_HELP_OPT ("-v","verbose\n")
#endif
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(bootm)
.cmd = do_bootm,
.usage = "boot an application image",
BAREBOX_CMD_HELP(cmd_bootm_help)
BAREBOX_CMD_END
BAREBOX_MAGICVAR(bootargs, "Linux Kernel parameters");
BAREBOX_MAGICVAR_NAMED(global_bootm_image, global.bootm.image, "bootm default boot image");
BAREBOX_MAGICVAR_NAMED(global_bootm_initrd, global.bootm.initrd, "bootm default initrd");
static struct binfmt_hook binfmt_uimage_hook = {
.type = filetype_uimage,
.exec = "bootm",
};
static int binfmt_uimage_init(void)
{
return binfmt_register(&binfmt_uimage_hook);
}
fs_initcall(binfmt_uimage_init);
/**
* @file
* @brief Boot support for Linux
*/
/**
* @page boot_preparation Preparing for Boot
*
* This chapter describes what's to be done to forward the control from
* barebox to Linux. This part describes the generic part, below you can find
* the architecture specific part.
*
* - @subpage arm_boot_preparation
* - @subpage ppc_boot_preparation
* - @subpage x86_boot_preparation
*/
|
