Merge tag 'video-for-2019.10-rc1' of https://gitlab.denx.de/u-boot/custodians/u-boot...
[oweals/u-boot.git] / cmd / booti.c
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 #ifdef CONFIG_RISCV_SMODE
81         images.os.arch = IH_ARCH_RISCV;
82 #elif CONFIG_ARM64
83         images.os.arch = IH_ARCH_ARM64;
84 #endif
85         ret = do_bootm_states(cmdtp, flag, argc, argv,
86 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
87                               BOOTM_STATE_RAMDISK |
88 #endif
89                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
90                               BOOTM_STATE_OS_GO,
91                               &images, 1);
92
93         return ret;
94 }
95
96 #ifdef CONFIG_SYS_LONGHELP
97 static char booti_help_text[] =
98         "[addr [initrd[:size]] [fdt]]\n"
99         "    - boot Linux 'Image' stored at 'addr'\n"
100         "\tThe argument 'initrd' is optional and specifies the address\n"
101         "\tof an initrd in memory. The optional parameter ':size' allows\n"
102         "\tspecifying the size of a RAW initrd.\n"
103 #if defined(CONFIG_OF_LIBFDT)
104         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
105         "\tthird argument providing the address of the device-tree blob\n"
106         "\tis required. To boot a kernel with a device-tree blob but\n"
107         "\twithout an initrd image, use a '-' for the initrd argument.\n"
108 #endif
109         "";
110 #endif
111
112 U_BOOT_CMD(
113         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
114         "boot Linux kernel 'Image' format from memory", booti_help_text
115 );