cmd/booti.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2009
   4  * Wolfgang Denk, DENX Software Engineering, [email protected].
   5  */
   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
  19 DECLARE_GLOBAL_DATA_PTR;
  20 /*
  21  * Image booting support
  22  */
  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         unsigned long comp_len;
  34         unsigned long decomp_len;
  35         int ctype;
  36
  37         ret = do_bootm_states(bmi, BOOTM_STATE_START);
  38
  39         /* Setup Linux kernel Image entry point */
  40         if (!bmi->addr_img) {
  41                 ld = image_load_addr;
  42                 debug("*  kernel: default image load address = 0x%08lx\n",
  43                                 image_load_addr);
  44         } else {
  45                 ld = hextoul(bmi->addr_img, NULL);
  46                 debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
  47         }
  48
  49         temp = map_sysmem(ld, 0);
  50         ctype = image_decomp_type(temp, 2);
  51         if (ctype > 0) {
  52                 dest = env_get_ulong("kernel_comp_addr_r", 16, 0);
  53                 comp_len = env_get_ulong("kernel_comp_size", 16, 0);
  54                 if (!dest || !comp_len) {
  55                         puts("kernel_comp_addr_r or kernel_comp_size is not provided!\n");
  56                         return -EINVAL;
  57                 }
  58                 if (dest < gd->ram_base || dest > gd->ram_top) {
  59                         puts("kernel_comp_addr_r is outside of DRAM range!\n");
  60                         return -EINVAL;
  61                 }
  62
  63                 debug("kernel image compression type %d size = 0x%08lx address = 0x%08lx\n",
  64                         ctype, comp_len, (ulong)dest);
  65                 decomp_len = comp_len * 10;
  66                 ret = image_decomp(ctype, 0, ld, IH_TYPE_KERNEL,
  67                                  (void *)dest, (void *)ld, comp_len,
  68                                  decomp_len, &dest_end);
  69                 if (ret)
  70                         return ret;
  71                 /* dest_end contains the uncompressed Image size */
  72                 memmove((void *) ld, (void *)dest, dest_end);
  73         }
  74         unmap_sysmem((void *)ld);
  75
  76         ret = booti_setup(ld, &relocated_addr, &image_size, false);
  77         if (ret || IS_ENABLED(CONFIG_SANDBOX))
  78                 return 1;
  79
  80         /* Handle BOOTM_STATE_LOADOS */
  81         if (relocated_addr != ld) {
  82                 printf("Moving Image from 0x%lx to 0x%lx, end=%lx\n", ld,
  83                        relocated_addr, relocated_addr + image_size);
  84                 memmove((void *)relocated_addr, (void *)ld, image_size);
  85         }
  86
  87         images->ep = relocated_addr;
  88         images->os.start = relocated_addr;
  89         images->os.end = relocated_addr + image_size;
  90
  91         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  92
  93         /*
  94          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  95          * have a header that provide this informaiton.
  96          */
  97         if (bootm_find_images(image_load_addr, bmi->conf_ramdisk, bmi->conf_fdt,
  98                               relocated_addr, image_size))
  99                 return 1;
 100
 101         return 0;
 102 }
 103
 104 int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 105 {
 106         struct bootm_info bmi;
 107         int states;
 108         int ret;
 109
 110         /* Consume 'booti' */
 111         argc--; argv++;
 112
 113         bootm_init(&bmi);
 114         if (argc)
 115                 bmi.addr_img = argv[0];
 116         if (argc > 1)
 117                 bmi.conf_ramdisk = argv[1];
 118         if (argc > 2)
 119                 bmi.conf_fdt = argv[2];
 120         bmi.boot_progress = true;
 121         bmi.cmd_name = "booti";
 122         /* do not set up argc and argv[] since nothing uses them */
 123
 124         if (booti_start(&bmi))
 125                 return 1;
 126
 127         /*
 128          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 129          * disable interrupts ourselves
 130          */
 131         bootm_disable_interrupts();
 132
 133         images.os.os = IH_OS_LINUX;
 134         if (IS_ENABLED(CONFIG_RISCV_SMODE))
 135                 images.os.arch = IH_ARCH_RISCV;
 136         else if (IS_ENABLED(CONFIG_ARM64))
 137                 images.os.arch = IH_ARCH_ARM64;
 138
 139         states = BOOTM_STATE_MEASURE | BOOTM_STATE_OS_PREP |
 140                 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO;
 141         if (IS_ENABLED(CONFIG_SYS_BOOT_RAMDISK_HIGH))
 142                 states |= BOOTM_STATE_RAMDISK;
 143
 144         ret = do_bootm_states(&bmi, states);
 145
 146         return ret;
 147 }
 148
 149 U_BOOT_LONGHELP(booti,
 150         "[addr [initrd[:size]] [fdt]]\n"
 151         "    - boot Linux flat or compressed 'Image' stored at 'addr'\n"
 152         "\tThe argument 'initrd' is optional and specifies the address\n"
 153         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 154         "\tspecifying the size of a RAW initrd.\n"
 155         "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
 156         "\ttypes are supported. In order to boot from any of these compressed\n"
 157         "\timages, user have to set kernel_comp_addr_r and kernel_comp_size environment\n"
 158         "\tvariables beforehand.\n"
 159 #if defined(CONFIG_OF_LIBFDT)
 160         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 161         "\tthird argument providing the address of the device-tree blob\n"
 162         "\tis required. To boot a kernel with a device-tree blob but\n"
 163         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 164 #endif
 165         );
 166
 167 U_BOOT_CMD(
 168         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 169         "boot Linux kernel 'Image' format from memory", booti_help_text
 170 );