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
16int __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 */
27static int bootz_start(struct cmd_tbl *cmdtp, int flag, int argc,
28		       char *const argv[], struct bootm_headers *images)
29{
30	ulong zi_start, zi_end;
31	struct bootm_info bmi;
32	int ret;
33
34	bootm_init(&bmi);
35	if (argc)
36		bmi.addr_img = argv[0];
37	if (argc > 1)
38		bmi.conf_ramdisk = argv[1];
39	if (argc > 2)
40		bmi.conf_fdt = argv[2];
41	/* do not set up argc and argv[] since nothing uses them */
42
43	ret = bootm_run_states(&bmi, BOOTM_STATE_START);
44
45	/* Setup Linux kernel zImage entry point */
46	if (!argc) {
47		images->ep = image_load_addr;
48		debug("*  kernel: default image load address = 0x%08lx\n",
49				image_load_addr);
50	} else {
51		images->ep = hextoul(argv[0], NULL);
52		debug("*  kernel: cmdline image address = 0x%08lx\n",
53			images->ep);
54	}
55
56	ret = bootz_setup(images->ep, &zi_start, &zi_end);
57	if (ret != 0)
58		return 1;
59
60	lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
61
62	/*
63	 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
64	 * have a header that provide this informaiton.
65	 */
66	if (bootm_find_images(image_load_addr, cmd_arg1(argc, argv),
67			      cmd_arg2(argc, argv), images->ep,
68			      zi_end - zi_start))
69		return 1;
70
71	return 0;
72}
73
74int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
75{
76	struct bootm_info bmi;
77	int ret;
78
79	/* Consume 'bootz' */
80	argc--; argv++;
81
82	if (bootz_start(cmdtp, flag, argc, argv, &images))
83		return 1;
84
85	/*
86	 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
87	 * disable interrupts ourselves
88	 */
89	bootm_disable_interrupts();
90
91	images.os.os = IH_OS_LINUX;
92
93	bootm_init(&bmi);
94	if (argc)
95		bmi.addr_img = argv[0];
96	if (argc > 1)
97		bmi.conf_ramdisk = argv[1];
98	if (argc > 2)
99		bmi.conf_fdt = argv[2];
100	bmi.cmd_name = "bootz";
101
102	ret = bootz_run(&bmi);
103
104	return ret;
105}
106
107U_BOOT_LONGHELP(bootz,
108	"[addr [initrd[:size]] [fdt]]\n"
109	"    - boot Linux zImage stored in memory\n"
110	"\tThe argument 'initrd' is optional and specifies the address\n"
111	"\tof the initrd in memory. The optional argument ':size' allows\n"
112	"\tspecifying the size of RAW initrd.\n"
113#if defined(CONFIG_OF_LIBFDT)
114	"\tWhen booting a Linux kernel which requires a flat device-tree\n"
115	"\ta third argument is required which is the address of the\n"
116	"\tdevice-tree blob. To boot that kernel without an initrd image,\n"
117	"\tuse a '-' for the second argument. If you do not pass a third\n"
118	"\ta bd_info struct will be passed instead\n"
119#endif
120	);
121
122U_BOOT_CMD(
123	bootz,	CONFIG_SYS_MAXARGS,	1,	do_bootz,
124	"boot Linux zImage image from memory", bootz_help_text
125);
126