blob: 9648fe9948d5a16327c4153a12bf8b90542a4501 [file] [log] [blame]
Tom Rini5db28902016-08-12 08:31:15 -04001/*
2 * (C) Copyright 2000-2009
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <common.h>
9#include <bootm.h>
10#include <command.h>
11#include <lmb.h>
12#include <linux/compiler.h>
13
14int __weak bootz_setup(ulong image, ulong *start, ulong *end)
15{
16 /* Please define bootz_setup() for your platform */
17
18 puts("Your platform's zImage format isn't supported yet!\n");
19 return -1;
20}
21
22/*
23 * zImage booting support
24 */
25static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
26 char * const argv[], bootm_headers_t *images)
27{
28 int ret;
29 ulong zi_start, zi_end;
30
31 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
32 images, 1);
33
34 /* Setup Linux kernel zImage entry point */
35 if (!argc) {
36 images->ep = load_addr;
37 debug("* kernel: default image load address = 0x%08lx\n",
38 load_addr);
39 } else {
40 images->ep = simple_strtoul(argv[0], NULL, 16);
41 debug("* kernel: cmdline image address = 0x%08lx\n",
42 images->ep);
43 }
44
45 ret = bootz_setup(images->ep, &zi_start, &zi_end);
46 if (ret != 0)
47 return 1;
48
49 lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
50
51 /*
52 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
53 * have a header that provide this informaiton.
54 */
55 if (bootm_find_images(flag, argc, argv))
56 return 1;
57
58 return 0;
59}
60
61int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
62{
63 int ret;
64
65 /* Consume 'bootz' */
66 argc--; argv++;
67
68 if (bootz_start(cmdtp, flag, argc, argv, &images))
69 return 1;
70
71 /*
72 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
73 * disable interrupts ourselves
74 */
75 bootm_disable_interrupts();
76
77 images.os.os = IH_OS_LINUX;
78 ret = do_bootm_states(cmdtp, flag, argc, argv,
79 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
80 BOOTM_STATE_OS_GO,
81 &images, 1);
82
83 return ret;
84}
85
86#ifdef CONFIG_SYS_LONGHELP
87static char bootz_help_text[] =
88 "[addr [initrd[:size]] [fdt]]\n"
89 " - boot Linux zImage stored in memory\n"
90 "\tThe argument 'initrd' is optional and specifies the address\n"
91 "\tof the initrd in memory. The optional argument ':size' allows\n"
92 "\tspecifying the size of RAW initrd.\n"
93#if defined(CONFIG_OF_LIBFDT)
94 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
95 "\ta third argument is required which is the address of the\n"
96 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
97 "\tuse a '-' for the second argument. If you do not pass a third\n"
98 "\ta bd_info struct will be passed instead\n"
99#endif
100 "";
101#endif
102
103U_BOOT_CMD(
104 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
105 "boot Linux zImage image from memory", bootz_help_text
106);