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 <lmb.h>
  12 #include <mapmem.h>
  13 #include <linux/kernel.h>
  14 #include <linux/sizes.h>
  15
  16 /*
  17  * Image booting support
  18  */
  19 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
  20                         char * const argv[], bootm_headers_t *images)
  21 {
  22         int ret;
  23         ulong ld;
  24         ulong relocated_addr;
  25         ulong image_size;
  26
  27         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
  28                               images, 1);
  29
  30         /* Setup Linux kernel Image entry point */
  31         if (!argc) {
  32                 ld = load_addr;
  33                 debug("*  kernel: default image load address = 0x%08lx\n",
  34                                 load_addr);
  35         } else {
  36                 ld = simple_strtoul(argv[0], NULL, 16);
  37                 debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
  38         }
  39
  40         ret = booti_setup(ld, &relocated_addr, &image_size, false);
  41         if (ret != 0)
  42                 return 1;
  43
  44         /* Handle BOOTM_STATE_LOADOS */
  45         if (relocated_addr != ld) {
  46                 debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
  47                 memmove((void *)relocated_addr, (void *)ld, image_size);
  48         }
  49
  50         images->ep = relocated_addr;
  51         images->os.start = relocated_addr;
  52         images->os.end = relocated_addr + image_size;
  53
  54         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  55
  56         /*
  57          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  58          * have a header that provide this informaiton.
  59          */
  60         if (bootm_find_images(flag, argc, argv))
  61                 return 1;
  62
  63         return 0;
  64 }
  65
  66 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  67 {
  68         int ret;
  69
  70         /* Consume 'booti' */
  71         argc--; argv++;
  72
  73         if (booti_start(cmdtp, flag, argc, argv, &images))
  74                 return 1;
  75
  76         /*
  77          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
  78          * disable interrupts ourselves
  79          */
  80         bootm_disable_interrupts();
  81
  82         images.os.os = IH_OS_LINUX;
  83 #ifdef CONFIG_RISCV_SMODE
  84         images.os.arch = IH_ARCH_RISCV;
  85 #elif CONFIG_ARM64
  86         images.os.arch = IH_ARCH_ARM64;
  87 #endif
  88         ret = do_bootm_states(cmdtp, flag, argc, argv,
  89 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  90                               BOOTM_STATE_RAMDISK |
  91 #endif
  92                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
  93                               BOOTM_STATE_OS_GO,
  94                               &images, 1);
  95
  96         return ret;
  97 }
  98
  99 #ifdef CONFIG_SYS_LONGHELP
 100 static char booti_help_text[] =
 101         "[addr [initrd[:size]] [fdt]]\n"
 102         "    - boot Linux 'Image' stored at 'addr'\n"
 103         "\tThe argument 'initrd' is optional and specifies the address\n"
 104         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 105         "\tspecifying the size of a RAW initrd.\n"
 106 #if defined(CONFIG_OF_LIBFDT)
 107         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 108         "\tthird argument providing the address of the device-tree blob\n"
 109         "\tis required. To boot a kernel with a device-tree blob but\n"
 110         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 111 #endif
 112         "";
 113 #endif
 114
 115 U_BOOT_CMD(
 116         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 117         "boot Linux kernel 'Image' format from memory", booti_help_text
 118 );