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
|
/*
* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <bootm.h>
#include <command.h>
#include <image.h>
#include <lmb.h>
#include <mapmem.h>
DECLARE_GLOBAL_DATA_PTR;
/* See Documentation/arm64/booting.txt in the Linux kernel */
struct Image_header {
uint32_t code0; /* Executable code */
uint32_t code1; /* Executable code */
uint64_t text_offset; /* Image load offset, LE */
uint64_t image_size; /* Effective Image size, LE */
uint64_t res1; /* reserved */
uint64_t res2; /* reserved */
uint64_t res3; /* reserved */
uint64_t res4; /* reserved */
uint32_t magic; /* Magic number */
uint32_t res5;
};
#define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
static int booti_setup(bootm_headers_t *images)
{
struct Image_header *ih;
uint64_t dst;
uint64_t image_size;
ih = (struct Image_header *)map_sysmem(images->ep, 0);
if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
puts("Bad Linux ARM64 Image magic!\n");
return 1;
}
if (ih->image_size == 0) {
puts("Image lacks image_size field, assuming 16MiB\n");
image_size = 16 << 20;
} else {
image_size = le64_to_cpu(ih->image_size);
}
/*
* If we are not at the correct run-time location, set the new
* correct location and then move the image there.
*/
dst = gd->bd->bi_dram[0].start + le64_to_cpu(ih->text_offset);
unmap_sysmem(ih);
if (images->ep != dst) {
void *src;
debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst);
src = (void *)images->ep;
images->ep = dst;
memmove((void *)dst, src, image_size);
}
return 0;
}
/*
* Image booting support
*/
static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[], bootm_headers_t *images)
{
int ret;
struct Image_header *ih;
ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
images, 1);
/* Setup Linux kernel Image entry point */
if (!argc) {
images->ep = load_addr;
debug("* kernel: default image load address = 0x%08lx\n",
load_addr);
} else {
images->ep = simple_strtoul(argv[0], NULL, 16);
debug("* kernel: cmdline image address = 0x%08lx\n",
images->ep);
}
ret = booti_setup(images);
if (ret != 0)
return 1;
ih = (struct Image_header *)map_sysmem(images->ep, 0);
lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size));
unmap_sysmem(ih);
/*
* Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
* have a header that provide this informaiton.
*/
if (bootm_find_images(flag, argc, argv))
return 1;
return 0;
}
int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int ret;
/* Consume 'booti' */
argc--; argv++;
if (booti_start(cmdtp, flag, argc, argv, &images))
return 1;
/*
* We are doing the BOOTM_STATE_LOADOS state ourselves, so must
* disable interrupts ourselves
*/
bootm_disable_interrupts();
images.os.os = IH_OS_LINUX;
ret = do_bootm_states(cmdtp, flag, argc, argv,
BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
BOOTM_STATE_OS_GO,
&images, 1);
return ret;
}
#ifdef CONFIG_SYS_LONGHELP
static char booti_help_text[] =
"[addr [initrd[:size]] [fdt]]\n"
" - boot arm64 Linux Image stored in memory\n"
"\tThe argument 'initrd' is optional and specifies the address\n"
"\tof an initrd in memory. The optional parameter ':size' allows\n"
"\tspecifying the size of a RAW initrd.\n"
#if defined(CONFIG_OF_LIBFDT)
"\tSince booting a Linux kernel requires a flat device-tree, a\n"
"\tthird argument providing the address of the device-tree blob\n"
"\tis required. To boot a kernel with a device-tree blob but\n"
"\twithout an initrd image, use a '-' for the initrd argument.\n"
#endif
"";
#endif
U_BOOT_CMD(
booti, CONFIG_SYS_MAXARGS, 1, do_booti,
"boot arm64 Linux Image image from memory", booti_help_text
);
|
