blob: 0e75509ee9623505570f10440b6e4880d8057f06 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Tom Rini5db28902016-08-12 08:31:15 -04002/*
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
Tom Rini5db28902016-08-12 08:31:15 -04005 */
6
7#include <common.h>
8#include <bootm.h>
9#include <command.h>
10#include <lmb.h>
11#include <linux/compiler.h>
12
13int __weak bootz_setup(ulong image, ulong *start, ulong *end)
14{
15 /* Please define bootz_setup() for your platform */
16
17 puts("Your platform's zImage format isn't supported yet!\n");
18 return -1;
19}
20
21/*
22 * zImage booting support
23 */
24static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
25 char * const argv[], bootm_headers_t *images)
26{
27 int ret;
28 ulong zi_start, zi_end;
29
30 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
31 images, 1);
32
33 /* Setup Linux kernel zImage entry point */
34 if (!argc) {
35 images->ep = load_addr;
36 debug("* kernel: default image load address = 0x%08lx\n",
37 load_addr);
38 } else {
39 images->ep = simple_strtoul(argv[0], NULL, 16);
40 debug("* kernel: cmdline image address = 0x%08lx\n",
41 images->ep);
42 }
43
44 ret = bootz_setup(images->ep, &zi_start, &zi_end);
45 if (ret != 0)
46 return 1;
47
48 lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
49
50 /*
51 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
52 * have a header that provide this informaiton.
53 */
54 if (bootm_find_images(flag, argc, argv))
55 return 1;
56
57 return 0;
58}
59
60int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
61{
62 int ret;
63
64 /* Consume 'bootz' */
65 argc--; argv++;
66
67 if (bootz_start(cmdtp, flag, argc, argv, &images))
68 return 1;
69
70 /*
71 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
72 * disable interrupts ourselves
73 */
74 bootm_disable_interrupts();
75
76 images.os.os = IH_OS_LINUX;
77 ret = do_bootm_states(cmdtp, flag, argc, argv,
Cédric Schieli4943dc22017-01-23 16:51:45 +010078#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
79 BOOTM_STATE_RAMDISK |
80#endif
Tom Rini5db28902016-08-12 08:31:15 -040081 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
82 BOOTM_STATE_OS_GO,
83 &images, 1);
84
85 return ret;
86}
87
88#ifdef CONFIG_SYS_LONGHELP
89static char bootz_help_text[] =
90 "[addr [initrd[:size]] [fdt]]\n"
91 " - boot Linux zImage stored in memory\n"
92 "\tThe argument 'initrd' is optional and specifies the address\n"
93 "\tof the initrd in memory. The optional argument ':size' allows\n"
94 "\tspecifying the size of RAW initrd.\n"
95#if defined(CONFIG_OF_LIBFDT)
96 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
97 "\ta third argument is required which is the address of the\n"
98 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
99 "\tuse a '-' for the second argument. If you do not pass a third\n"
100 "\ta bd_info struct will be passed instead\n"
101#endif
102 "";
103#endif
104
105U_BOOT_CMD(
106 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
107 "boot Linux zImage image from memory", bootz_help_text
108);