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 <irq_func.h>
  12 #include <lmb.h>
  13 #include <mapmem.h>
  14 #include <linux/kernel.h>
  15 #include <linux/sizes.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18 /*
  19  * Image booting support
  20  */
  21 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
  22                         char * const argv[], bootm_headers_t *images)
  23 {
  24         int ret;
  25         ulong ld;
  26         ulong relocated_addr;
  27         ulong image_size;
  28         uint8_t *temp;
  29         ulong dest;
  30         ulong dest_end;
  31         unsigned long comp_len;
  32         unsigned long decomp_len;
  33         int ctype;
  34
  35         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
  36                               images, 1);
  37
  38         /* Setup Linux kernel Image entry point */
  39         if (!argc) {
  40                 ld = image_load_addr;
  41                 debug("*  kernel: default image load address = 0x%08lx\n",
  42                                 image_load_addr);
  43         } else {
  44                 ld = simple_strtoul(argv[0], NULL, 16);
  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 != 0)
  77                 return 1;
  78
  79         /* Handle BOOTM_STATE_LOADOS */
  80         if (relocated_addr != ld) {
  81                 debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
  82                 memmove((void *)relocated_addr, (void *)ld, image_size);
  83         }
  84
  85         images->ep = relocated_addr;
  86         images->os.start = relocated_addr;
  87         images->os.end = relocated_addr + image_size;
  88
  89         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  90
  91         /*
  92          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  93          * have a header that provide this informaiton.
  94          */
  95         if (bootm_find_images(flag, argc, argv))
  96                 return 1;
  97
  98         return 0;
  99 }
 100
 101 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 102 {
 103         int ret;
 104
 105         /* Consume 'booti' */
 106         argc--; argv++;
 107
 108         if (booti_start(cmdtp, flag, argc, argv, &images))
 109                 return 1;
 110
 111         /*
 112          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 113          * disable interrupts ourselves
 114          */
 115         bootm_disable_interrupts();
 116
 117         images.os.os = IH_OS_LINUX;
 118 #ifdef CONFIG_RISCV_SMODE
 119         images.os.arch = IH_ARCH_RISCV;
 120 #elif CONFIG_ARM64
 121         images.os.arch = IH_ARCH_ARM64;
 122 #endif
 123         ret = do_bootm_states(cmdtp, flag, argc, argv,
 124 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 125                               BOOTM_STATE_RAMDISK |
 126 #endif
 127                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 128                               BOOTM_STATE_OS_GO,
 129                               &images, 1);
 130
 131         return ret;
 132 }
 133
 134 #ifdef CONFIG_SYS_LONGHELP
 135 static char booti_help_text[] =
 136         "[addr [initrd[:size]] [fdt]]\n"
 137         "    - boot Linux flat or compressed 'Image' stored at 'addr'\n"
 138         "\tThe argument 'initrd' is optional and specifies the address\n"
 139         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 140         "\tspecifying the size of a RAW initrd.\n"
 141         "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
 142         "\ttypes are supported. In order to boot from any of these compressed\n"
 143         "\timages, user have to set kernel_comp_addr_r and kernel_comp_size enviornment\n"
 144         "\tvariables beforehand.\n"
 145 #if defined(CONFIG_OF_LIBFDT)
 146         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 147         "\tthird argument providing the address of the device-tree blob\n"
 148         "\tis required. To boot a kernel with a device-tree blob but\n"
 149         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 150 #endif
 151         "";
 152 #endif
 153
 154 U_BOOT_CMD(
 155         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 156         "boot Linux kernel 'Image' format from memory", booti_help_text
 157 );