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 <lmb.h>
11 #include <linux/compiler.h>
12
bootz_setup(ulong image,ulong * start,ulong * end)13 int __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 */
bootz_start(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[],bootm_headers_t * images)24 static 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
do_bootz(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])60 int 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,
78 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
79 BOOTM_STATE_RAMDISK |
80 #endif
81 BOOTM_STATE_MEASURE |
82 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
83 BOOTM_STATE_OS_GO,
84 &images, 1);
85
86 return ret;
87 }
88
89 #ifdef CONFIG_SYS_LONGHELP
90 static char bootz_help_text[] =
91 "[addr [initrd[:size]] [fdt]]\n"
92 " - boot Linux zImage stored in memory\n"
93 "\tThe argument 'initrd' is optional and specifies the address\n"
94 "\tof the initrd in memory. The optional argument ':size' allows\n"
95 "\tspecifying the size of RAW initrd.\n"
96 #if defined(CONFIG_OF_LIBFDT)
97 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
98 "\ta third argument is required which is the address of the\n"
99 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
100 "\tuse a '-' for the second argument. If you do not pass a third\n"
101 "\ta bd_info struct will be passed instead\n"
102 #endif
103 "";
104 #endif
105
106 U_BOOT_CMD(
107 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
108 "boot Linux zImage image from memory", bootz_help_text
109 );
110