1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7 #include <common.h>
8 #include <bootm.h>
9 #include <command.h>
10 #include <image.h>
11 #include <irq_func.h>
12 #include <lmb.h>
13 #include <log.h>
14 #include <linux/compiler.h>
15
bootz_setup(ulong image,ulong * start,ulong * end)16 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
17 {
18 /* Please define bootz_setup() for your platform */
19
20 puts("Your platform's zImage format isn't supported yet!\n");
21 return -1;
22 }
23
24 /*
25 * zImage booting support
26 */
bootz_start(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[],bootm_headers_t * images)27 static int bootz_start(struct cmd_tbl *cmdtp, int flag, int argc,
28 char *const argv[], bootm_headers_t *images)
29 {
30 int ret;
31 ulong zi_start, zi_end;
32
33 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
34 images, 1);
35
36 /* Setup Linux kernel zImage entry point */
37 if (!argc) {
38 images->ep = image_load_addr;
39 debug("* kernel: default image load address = 0x%08lx\n",
40 image_load_addr);
41 } else {
42 images->ep = simple_strtoul(argv[0], NULL, 16);
43 debug("* kernel: cmdline image address = 0x%08lx\n",
44 images->ep);
45 }
46
47 ret = bootz_setup(images->ep, &zi_start, &zi_end);
48 if (ret != 0)
49 return 1;
50
51 lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
52
53 /*
54 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
55 * have a header that provide this informaiton.
56 */
57 if (bootm_find_images(flag, argc, argv, images->ep, zi_end - zi_start))
58 return 1;
59
60 return 0;
61 }
62
do_bootz(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])63 int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
64 {
65 int ret;
66
67 /* Consume 'bootz' */
68 argc--; argv++;
69
70 if (bootz_start(cmdtp, flag, argc, argv, &images))
71 return 1;
72
73 /*
74 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
75 * disable interrupts ourselves
76 */
77 bootm_disable_interrupts();
78
79 images.os.os = IH_OS_LINUX;
80 ret = do_bootm_states(cmdtp, flag, argc, argv,
81 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
82 BOOTM_STATE_RAMDISK |
83 #endif
84 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
85 BOOTM_STATE_OS_GO,
86 &images, 1);
87
88 return ret;
89 }
90
91 #ifdef CONFIG_SYS_LONGHELP
92 static char bootz_help_text[] =
93 "[addr [initrd[:size]] [fdt]]\n"
94 " - boot Linux zImage stored in memory\n"
95 "\tThe argument 'initrd' is optional and specifies the address\n"
96 "\tof the initrd in memory. The optional argument ':size' allows\n"
97 "\tspecifying the size of RAW initrd.\n"
98 #if defined(CONFIG_OF_LIBFDT)
99 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
100 "\ta third argument is required which is the address of the\n"
101 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
102 "\tuse a '-' for the second argument. If you do not pass a third\n"
103 "\ta bd_info struct will be passed instead\n"
104 #endif
105 "";
106 #endif
107
108 U_BOOT_CMD(
109 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
110 "boot Linux zImage image from memory", bootz_help_text
111 );
112