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 <bootm.h>
   8 #include <command.h>
   9 #include <image.h>
  10 #include <irq_func.h>
  11 #include <lmb.h>
  12 #include <log.h>
  13 #include <mapmem.h>
  14 #include <asm/global_data.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sizes.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19 /*
  20  * Image booting support
  21  */
  22 static int booti_start(struct bootm_info *bmi)
  23 {
  24         struct bootm_headers *images = bmi->images;
  25         int ret;
  26         ulong ld;
  27         ulong relocated_addr;
  28         ulong image_size;
  29         uint8_t *temp;
  30         ulong dest;
  31         ulong dest_end;
  32         unsigned long comp_len;
  33         unsigned long decomp_len;
  34         int ctype;
  35
  36         ret = bootm_run_states(bmi, BOOTM_STATE_START);
  37
  38         /* Setup Linux kernel Image entry point */
  39         if (!bmi->addr_img) {
  40                 ld = image_load_addr;
  41                 debug("*  kernel: default image load address = 0x%08lx\n",
  42                                 image_load_addr);
  43         } else {
  44                 ld = hextoul(bmi->addr_img, NULL);
  45                 debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
  46         }
  47
  48         temp = map_sysmem(ld, 0);
  49         ctype = image_decomp_type(temp, 2);
  50         if (ctype > 0) {
  51                 dest = env_get_ulong("kernel_comp_addr_r", 16, 0);
  52                 comp_len = env_get_ulong("kernel_comp_size", 16, 0);
  53                 if (!dest || !comp_len) {
  54                         puts("kernel_comp_addr_r or kernel_comp_size is not provided!\n");
  55                         return -EINVAL;
  56                 }
  57                 if (dest < gd->ram_base || dest > gd->ram_top) {
  58                         puts("kernel_comp_addr_r is outside of DRAM range!\n");
  59                         return -EINVAL;
  60                 }
  61
  62                 debug("kernel image compression type %d size = 0x%08lx address = 0x%08lx\n",
  63                         ctype, comp_len, (ulong)dest);
  64                 decomp_len = comp_len * 10;
  65                 ret = image_decomp(ctype, 0, ld, IH_TYPE_KERNEL,
  66                                  (void *)dest, (void *)ld, comp_len,
  67                                  decomp_len, &dest_end);
  68                 if (ret)
  69                         return ret;
  70                 /* dest_end contains the uncompressed Image size */
  71                 memmove((void *) ld, (void *)dest, dest_end);
  72         }
  73         unmap_sysmem((void *)ld);
  74
  75         ret = booti_setup(ld, &relocated_addr, &image_size, false);
  76         if (ret)
  77                 return 1;
  78
  79         /* Handle BOOTM_STATE_LOADOS */
  80         if (relocated_addr != ld) {
  81                 printf("Moving Image from 0x%lx to 0x%lx, end=%lx\n", ld,
  82                        relocated_addr, relocated_addr + image_size);
  83                 memmove((void *)relocated_addr, (void *)ld, image_size);
  84         }
  85
  86         images->ep = relocated_addr;
  87         images->os.start = relocated_addr;
  88         images->os.end = relocated_addr + image_size;
  89
  90         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  91
  92         /*
  93          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  94          * have a header that provide this informaiton.
  95          */
  96         if (bootm_find_images(image_load_addr, bmi->conf_ramdisk, bmi->conf_fdt,
  97                               relocated_addr, image_size))
  98                 return 1;
  99
 100         return 0;
 101 }
 102
 103 int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 104 {
 105         struct bootm_info bmi;
 106         int states;
 107         int ret;
 108
 109         /* Consume 'booti' */
 110         argc--; argv++;
 111
 112         bootm_init(&bmi);
 113         if (argc)
 114                 bmi.addr_img = argv[0];
 115         if (argc > 1)
 116                 bmi.conf_ramdisk = argv[1];
 117         if (argc > 2)
 118                 bmi.conf_fdt = argv[2];
 119         bmi.boot_progress = true;
 120         bmi.cmd_name = "booti";
 121         /* do not set up argc and argv[] since nothing uses them */
 122
 123         if (booti_start(&bmi))
 124                 return 1;
 125
 126         /*
 127          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 128          * disable interrupts ourselves
 129          */
 130         bootm_disable_interrupts();
 131
 132         images.os.os = IH_OS_LINUX;
 133         if (IS_ENABLED(CONFIG_RISCV_SMODE))
 134                 images.os.arch = IH_ARCH_RISCV;
 135         else if (IS_ENABLED(CONFIG_ARM64))
 136                 images.os.arch = IH_ARCH_ARM64;
 137
 138         states = BOOTM_STATE_MEASURE | BOOTM_STATE_OS_PREP |
 139                 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO;
 140         if (IS_ENABLED(CONFIG_SYS_BOOT_RAMDISK_HIGH))
 141                 states |= BOOTM_STATE_RAMDISK;
 142
 143         ret = bootm_run_states(&bmi, states);
 144
 145         return ret;
 146 }
 147
 148 U_BOOT_LONGHELP(booti,
 149         "[addr [initrd[:size]] [fdt]]\n"
 150         "    - boot Linux flat or compressed 'Image' stored at 'addr'\n"
 151         "\tThe argument 'initrd' is optional and specifies the address\n"
 152         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 153         "\tspecifying the size of a RAW initrd.\n"
 154         "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
 155         "\ttypes are supported. In order to boot from any of these compressed\n"
 156         "\timages, user have to set kernel_comp_addr_r and kernel_comp_size environment\n"
 157         "\tvariables beforehand.\n"
 158 #if defined(CONFIG_OF_LIBFDT)
 159         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 160         "\tthird argument providing the address of the device-tree blob\n"
 161         "\tis required. To boot a kernel with a device-tree blob but\n"
 162         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 163 #endif
 164         );
 165
 166 U_BOOT_CMD(
 167         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 168         "boot Linux kernel 'Image' format from memory", booti_help_text
 169 );