]>
git.ipfire.org Git - people/ms/u-boot.git/blob - cmd/booti.c
2 * (C) Copyright 2000-2009
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
15 DECLARE_GLOBAL_DATA_PTR
;
17 /* See Documentation/arm64/booting.txt in the Linux kernel */
19 uint32_t code0
; /* Executable code */
20 uint32_t code1
; /* Executable code */
21 uint64_t text_offset
; /* Image load offset, LE */
22 uint64_t image_size
; /* Effective Image size, LE */
23 uint64_t res1
; /* reserved */
24 uint64_t res2
; /* reserved */
25 uint64_t res3
; /* reserved */
26 uint64_t res4
; /* reserved */
27 uint32_t magic
; /* Magic number */
31 #define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
33 static int booti_setup(bootm_headers_t
*images
)
35 struct Image_header
*ih
;
39 ih
= (struct Image_header
*)map_sysmem(images
->ep
, 0);
41 if (ih
->magic
!= le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC
)) {
42 puts("Bad Linux ARM64 Image magic!\n");
46 if (ih
->image_size
== 0) {
47 puts("Image lacks image_size field, assuming 16MiB\n");
48 image_size
= 16 << 20;
50 image_size
= le64_to_cpu(ih
->image_size
);
54 * If we are not at the correct run-time location, set the new
55 * correct location and then move the image there.
57 dst
= gd
->bd
->bi_dram
[0].start
+ le64_to_cpu(ih
->text_offset
);
61 if (images
->ep
!= dst
) {
64 debug("Moving Image from 0x%lx to 0x%llx\n", images
->ep
, dst
);
66 src
= (void *)images
->ep
;
68 memmove((void *)dst
, src
, image_size
);
75 * Image booting support
77 static int booti_start(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
78 char * const argv
[], bootm_headers_t
*images
)
81 struct Image_header
*ih
;
83 ret
= do_bootm_states(cmdtp
, flag
, argc
, argv
, BOOTM_STATE_START
,
86 /* Setup Linux kernel Image entry point */
88 images
->ep
= load_addr
;
89 debug("* kernel: default image load address = 0x%08lx\n",
92 images
->ep
= simple_strtoul(argv
[0], NULL
, 16);
93 debug("* kernel: cmdline image address = 0x%08lx\n",
97 ret
= booti_setup(images
);
101 ih
= (struct Image_header
*)map_sysmem(images
->ep
, 0);
103 lmb_reserve(&images
->lmb
, images
->ep
, le32_to_cpu(ih
->image_size
));
108 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
109 * have a header that provide this informaiton.
111 if (bootm_find_images(flag
, argc
, argv
))
117 int do_booti(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
121 /* Consume 'booti' */
124 if (booti_start(cmdtp
, flag
, argc
, argv
, &images
))
128 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
129 * disable interrupts ourselves
131 bootm_disable_interrupts();
133 images
.os
.os
= IH_OS_LINUX
;
134 ret
= do_bootm_states(cmdtp
, flag
, argc
, argv
,
135 BOOTM_STATE_OS_PREP
| BOOTM_STATE_OS_FAKE_GO
|
142 #ifdef CONFIG_SYS_LONGHELP
143 static char booti_help_text
[] =
144 "[addr [initrd[:size]] [fdt]]\n"
145 " - boot arm64 Linux Image stored in memory\n"
146 "\tThe argument 'initrd' is optional and specifies the address\n"
147 "\tof an initrd in memory. The optional parameter ':size' allows\n"
148 "\tspecifying the size of a RAW initrd.\n"
149 #if defined(CONFIG_OF_LIBFDT)
150 "\tSince booting a Linux kernel requires a flat device-tree, a\n"
151 "\tthird argument providing the address of the device-tree blob\n"
152 "\tis required. To boot a kernel with a device-tree blob but\n"
153 "\twithout an initrd image, use a '-' for the initrd argument.\n"
159 booti
, CONFIG_SYS_MAXARGS
, 1, do_booti
,
160 "boot arm64 Linux Image image from memory", booti_help_text