xref: /openbmc/u-boot/cmd/booti.c (revision bbbb50f9)
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 <lmb.h>
12 #include <mapmem.h>
13 #include <linux/kernel.h>
14 #include <linux/sizes.h>
15 
16 /*
17  * Image booting support
18  */
19 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
20 			char * const argv[], bootm_headers_t *images)
21 {
22 	int ret;
23 	ulong ld;
24 	ulong relocated_addr;
25 	ulong image_size;
26 
27 	ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
28 			      images, 1);
29 
30 	/* Setup Linux kernel Image entry point */
31 	if (!argc) {
32 		ld = load_addr;
33 		debug("*  kernel: default image load address = 0x%08lx\n",
34 				load_addr);
35 	} else {
36 		ld = simple_strtoul(argv[0], NULL, 16);
37 		debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
38 	}
39 
40 	ret = booti_setup(ld, &relocated_addr, &image_size, false);
41 	if (ret != 0)
42 		return 1;
43 
44 	/* Handle BOOTM_STATE_LOADOS */
45 	if (relocated_addr != ld) {
46 		debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
47 		memmove((void *)relocated_addr, (void *)ld, image_size);
48 	}
49 
50 	images->ep = relocated_addr;
51 	lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
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))
58 		return 1;
59 
60 	return 0;
61 }
62 
63 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
64 {
65 	int ret;
66 
67 	/* Consume 'booti' */
68 	argc--; argv++;
69 
70 	if (booti_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 	images.os.arch = IH_ARCH_ARM64;
81 	ret = do_bootm_states(cmdtp, flag, argc, argv,
82 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
83 			      BOOTM_STATE_RAMDISK |
84 #endif
85 			      BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
86 			      BOOTM_STATE_OS_GO,
87 			      &images, 1);
88 
89 	return ret;
90 }
91 
92 #ifdef CONFIG_SYS_LONGHELP
93 static char booti_help_text[] =
94 	"[addr [initrd[:size]] [fdt]]\n"
95 	"    - boot arm64 Linux Image stored in memory\n"
96 	"\tThe argument 'initrd' is optional and specifies the address\n"
97 	"\tof an initrd in memory. The optional parameter ':size' allows\n"
98 	"\tspecifying the size of a RAW initrd.\n"
99 #if defined(CONFIG_OF_LIBFDT)
100 	"\tSince booting a Linux kernel requires a flat device-tree, a\n"
101 	"\tthird argument providing the address of the device-tree blob\n"
102 	"\tis required. To boot a kernel with a device-tree blob but\n"
103 	"\twithout an initrd image, use a '-' for the initrd argument.\n"
104 #endif
105 	"";
106 #endif
107 
108 U_BOOT_CMD(
109 	booti,	CONFIG_SYS_MAXARGS,	1,	do_booti,
110 	"boot arm64 Linux Image image from memory", booti_help_text
111 );
112