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 */
booti_start(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[],bootm_headers_t * images)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
do_booti(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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_MEASURE |
86 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
87 BOOTM_STATE_OS_GO,
88 &images, 1);
89
90 return ret;
91 }
92
93 #ifdef CONFIG_SYS_LONGHELP
94 static char booti_help_text[] =
95 "[addr [initrd[:size]] [fdt]]\n"
96 " - boot arm64 Linux Image stored in memory\n"
97 "\tThe argument 'initrd' is optional and specifies the address\n"
98 "\tof an initrd in memory. The optional parameter ':size' allows\n"
99 "\tspecifying the size of a RAW initrd.\n"
100 #if defined(CONFIG_OF_LIBFDT)
101 "\tSince booting a Linux kernel requires a flat device-tree, a\n"
102 "\tthird argument providing the address of the device-tree blob\n"
103 "\tis required. To boot a kernel with a device-tree blob but\n"
104 "\twithout an initrd image, use a '-' for the initrd argument.\n"
105 #endif
106 "";
107 #endif
108
109 U_BOOT_CMD(
110 booti, CONFIG_SYS_MAXARGS, 1, do_booti,
111 "boot arm64 Linux Image image from memory", booti_help_text
112 );
113