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 <bootm.h>
8 #include <command.h>
9 #include <env.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
19 DECLARE_GLOBAL_DATA_PTR;
20 /*
21 * Image booting support
22 */
booti_start(struct bootm_info * bmi)23 static int booti_start(struct bootm_info *bmi)
24 {
25 struct bootm_headers *images = bmi->images;
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 phys_addr_t ep_addr;
34 unsigned long comp_len;
35 unsigned long decomp_len;
36 int ctype;
37
38 ret = bootm_run_states(bmi, BOOTM_STATE_START);
39
40 /* Setup Linux kernel Image entry point */
41 if (!bmi->addr_img) {
42 ld = image_load_addr;
43 debug("* kernel: default image load address = 0x%08lx\n",
44 image_load_addr);
45 } else {
46 ld = hextoul(bmi->addr_img, 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 /* dest_end contains the uncompressed Image size */
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)
79 return 1;
80
81 /* Handle BOOTM_STATE_LOADOS */
82 if (relocated_addr != ld) {
83 printf("Moving Image from 0x%lx to 0x%lx, end=0x%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 ep_addr = (phys_addr_t)images->ep;
93 ret = lmb_alloc_mem(LMB_MEM_ALLOC_ADDR, 0, &ep_addr,
94 le32_to_cpu(image_size), LMB_NONE);
95 if (ret) {
96 printf("Failed to allocate memory for the image at %#llx\n",
97 (unsigned long long)images->ep);
98 return 1;
99 }
100
101 /*
102 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
103 * have a header that provide this informaiton.
104 */
105 if (bootm_find_images(image_load_addr, bmi->conf_ramdisk, bmi->conf_fdt,
106 relocated_addr, image_size))
107 return 1;
108
109 return 0;
110 }
111
do_booti(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])112 int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
113 {
114 struct bootm_info bmi;
115 int states;
116 int ret;
117
118 /* Consume 'booti' */
119 argc--; argv++;
120
121 bootm_init(&bmi);
122 if (argc)
123 bmi.addr_img = argv[0];
124 if (argc > 1)
125 bmi.conf_ramdisk = argv[1];
126 if (argc > 2)
127 bmi.conf_fdt = argv[2];
128 bmi.boot_progress = true;
129 bmi.cmd_name = "booti";
130 /* do not set up argc and argv[] since nothing uses them */
131
132 if (booti_start(&bmi))
133 return 1;
134
135 /*
136 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
137 * disable interrupts ourselves
138 */
139 bootm_disable_interrupts();
140
141 images.os.os = IH_OS_LINUX;
142 if (IS_ENABLED(CONFIG_RISCV_SMODE))
143 images.os.arch = IH_ARCH_RISCV;
144 else if (IS_ENABLED(CONFIG_ARM64))
145 images.os.arch = IH_ARCH_ARM64;
146
147 states = BOOTM_STATE_MEASURE | BOOTM_STATE_OS_PREP |
148 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO;
149 if (IS_ENABLED(CONFIG_SYS_BOOT_RAMDISK_HIGH))
150 states |= BOOTM_STATE_RAMDISK;
151
152 ret = bootm_run_states(&bmi, states);
153
154 return ret;
155 }
156
157 U_BOOT_LONGHELP(booti,
158 "[addr [initrd[:size]] [fdt]]\n"
159 " - boot Linux flat or compressed 'Image' stored at 'addr'\n"
160 "\tThe argument 'initrd' is optional and specifies the address\n"
161 "\tof an initrd in memory. The optional parameter ':size' allows\n"
162 "\tspecifying the size of a RAW initrd.\n"
163 "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
164 "\ttypes are supported. In order to boot from any of these compressed\n"
165 "\timages, user have to set kernel_comp_addr_r and kernel_comp_size environment\n"
166 "\tvariables beforehand.\n"
167 #if defined(CONFIG_OF_LIBFDT)
168 "\tSince booting a Linux kernel requires a flat device-tree, a\n"
169 "\tthird argument providing the address of the device-tree blob\n"
170 "\tis required. To boot a kernel with a device-tree blob but\n"
171 "\twithout an initrd image, use a '-' for the initrd argument.\n"
172 #endif
173 );
174
175 U_BOOT_CMD(
176 booti, CONFIG_SYS_MAXARGS, 1, do_booti,
177 "boot Linux kernel 'Image' format from memory", booti_help_text
178 );
179