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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 <mapmem.h>
15#include <asm/global_data.h>
16#include <linux/kernel.h>
17#include <linux/sizes.h>
18
19DECLARE_GLOBAL_DATA_PTR;
20
21
22
23static int booti_start(struct cmd_tbl *cmdtp, int flag, int argc,
24 char *const argv[], bootm_headers_t *images)
25{
26 int ret;
27 ulong ld;
28 ulong relocated_addr;
29 ulong image_size;
30 uint8_t *temp;
31 ulong dest;
32 ulong dest_end;
33 unsigned long comp_len;
34 unsigned long decomp_len;
35 int ctype;
36
37 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
38 images, 1);
39
40
41 if (!argc) {
42 ld = image_load_addr;
43 debug("* kernel: default image load address = 0x%08lx\n",
44 image_load_addr);
45 } else {
46 ld = hextoul(argv[0], NULL);
47 debug("* kernel: cmdline image address = 0x%08lx\n", ld);
48 }
49
50 temp = map_sysmem(ld, 0);
51 ctype = image_decomp_type(temp, 2);
52 if (ctype > 0) {
53 dest = env_get_ulong("kernel_comp_addr_r", 16, 0);
54 comp_len = env_get_ulong("kernel_comp_size", 16, 0);
55 if (!dest || !comp_len) {
56 puts("kernel_comp_addr_r or kernel_comp_size is not provided!\n");
57 return -EINVAL;
58 }
59 if (dest < gd->ram_base || dest > gd->ram_top) {
60 puts("kernel_comp_addr_r is outside of DRAM range!\n");
61 return -EINVAL;
62 }
63
64 debug("kernel image compression type %d size = 0x%08lx address = 0x%08lx\n",
65 ctype, comp_len, (ulong)dest);
66 decomp_len = comp_len * 10;
67 ret = image_decomp(ctype, 0, ld, IH_TYPE_KERNEL,
68 (void *)dest, (void *)ld, comp_len,
69 decomp_len, &dest_end);
70 if (ret)
71 return ret;
72
73 memmove((void *) ld, (void *)dest, dest_end);
74 }
75 unmap_sysmem((void *)ld);
76
77 ret = booti_setup(ld, &relocated_addr, &image_size, false);
78 if (ret != 0)
79 return 1;
80
81
82 if (relocated_addr != ld) {
83 printf("Moving Image from 0x%lx to 0x%lx, end=%lx\n", ld,
84 relocated_addr, relocated_addr + image_size);
85 memmove((void *)relocated_addr, (void *)ld, image_size);
86 }
87
88 images->ep = relocated_addr;
89 images->os.start = relocated_addr;
90 images->os.end = relocated_addr + image_size;
91
92 lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
93
94
95
96
97
98 if (bootm_find_images(flag, argc, argv, relocated_addr, image_size))
99 return 1;
100
101 return 0;
102}
103
104int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
105{
106 int ret;
107
108
109 argc--; argv++;
110
111 if (booti_start(cmdtp, flag, argc, argv, &images))
112 return 1;
113
114
115
116
117
118 bootm_disable_interrupts();
119
120 images.os.os = IH_OS_LINUX;
121#ifdef CONFIG_RISCV_SMODE
122 images.os.arch = IH_ARCH_RISCV;
123#elif CONFIG_ARM64
124 images.os.arch = IH_ARCH_ARM64;
125#endif
126 ret = do_bootm_states(cmdtp, flag, argc, argv,
127#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
128 BOOTM_STATE_RAMDISK |
129#endif
130 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
131 BOOTM_STATE_OS_GO,
132 &images, 1);
133
134 return ret;
135}
136
137#ifdef CONFIG_SYS_LONGHELP
138static char booti_help_text[] =
139 "[addr [initrd[:size]] [fdt]]\n"
140 " - boot Linux flat or compressed 'Image' stored at 'addr'\n"
141 "\tThe argument 'initrd' is optional and specifies the address\n"
142 "\tof an initrd in memory. The optional parameter ':size' allows\n"
143 "\tspecifying the size of a RAW initrd.\n"
144 "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
145 "\ttypes are supported. In order to boot from any of these compressed\n"
146 "\timages, user have to set kernel_comp_addr_r and kernel_comp_size environment\n"
147 "\tvariables beforehand.\n"
148#if defined(CONFIG_OF_LIBFDT)
149 "\tSince booting a Linux kernel requires a flat device-tree, a\n"
150 "\tthird argument providing the address of the device-tree blob\n"
151 "\tis required. To boot a kernel with a device-tree blob but\n"
152 "\twithout an initrd image, use a '-' for the initrd argument.\n"
153#endif
154 "";
155#endif
156
157U_BOOT_CMD(
158 booti, CONFIG_SYS_MAXARGS, 1, do_booti,
159 "boot Linux kernel 'Image' format from memory", booti_help_text
160);
161
