cmd/booti.c

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <bootm.h>
  10 #include <command.h>
  11 #include <image.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 /*
  20  * Image booting support
  21  */
  22 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
  23                         char * const argv[], bootm_headers_t *images)
  24 {
  25         int ret;
  26         ulong ld;
  27         ulong relocated_addr;
  28         ulong image_size;
  29
  30         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
  31                               images, 1);
  32
  33         /* Setup Linux kernel Image entry point */
  34         if (!argc) {
  35                 ld = load_addr;
  36                 debug("*  kernel: default image load address = 0x%08lx\n",
  37                                 load_addr);
  38         } else {
  39                 ld = simple_strtoul(argv[0], NULL, 16);
  40                 debug("*  kernel: cmdline image address = 0x%08lx\n",
  41                         images->ep);
  42         }
  43
  44         ret = booti_setup(ld, &relocated_addr, &image_size);
  45         if (ret != 0)
  46                 return 1;
  47
  48         /* Handle BOOTM_STATE_LOADOS */
  49         if (relocated_addr != ld) {
  50                 debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
  51                 memmove((void *)relocated_addr, (void *)ld, image_size);
  52         }
  53
  54         images->ep = relocated_addr;
  55         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  56
  57         /*
  58          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  59          * have a header that provide this informaiton.
  60          */
  61         if (bootm_find_images(flag, argc, argv))
  62                 return 1;
  63
  64         return 0;
  65 }
  66
  67 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  68 {
  69         int ret;
  70
  71         /* Consume 'booti' */
  72         argc--; argv++;
  73
  74         if (booti_start(cmdtp, flag, argc, argv, &images))
  75                 return 1;
  76
  77         /*
  78          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
  79          * disable interrupts ourselves
  80          */
  81         bootm_disable_interrupts();
  82
  83         images.os.os = IH_OS_LINUX;
  84         images.os.arch = IH_ARCH_ARM64;
  85         ret = do_bootm_states(cmdtp, flag, argc, argv,
  86 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  87                               BOOTM_STATE_RAMDISK |
  88 #endif
  89                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
  90                               BOOTM_STATE_OS_GO,
  91                               &images, 1);
  92
  93         return ret;
  94 }
  95
  96 #ifdef CONFIG_SYS_LONGHELP
  97 static char booti_help_text[] =
  98         "[addr [initrd[:size]] [fdt]]\n"
  99         "    - boot arm64 Linux Image stored in memory\n"
 100         "\tThe argument 'initrd' is optional and specifies the address\n"
 101         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 102         "\tspecifying the size of a RAW initrd.\n"
 103 #if defined(CONFIG_OF_LIBFDT)
 104         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 105         "\tthird argument providing the address of the device-tree blob\n"
 106         "\tis required. To boot a kernel with a device-tree blob but\n"
 107         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 108 #endif
 109         "";
 110 #endif
 111
 112 U_BOOT_CMD(
 113         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 114         "boot arm64 Linux Image image from memory", booti_help_text
 115 );