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", ld);
  41         }
  42
  43         ret = booti_setup(ld, &relocated_addr, &image_size);
  44         if (ret != 0)
  45                 return 1;
  46
  47         /* Handle BOOTM_STATE_LOADOS */
  48         if (relocated_addr != ld) {
  49                 debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
  50                 memmove((void *)relocated_addr, (void *)ld, image_size);
  51         }
  52
  53         images->ep = relocated_addr;
  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         images.os.arch = IH_ARCH_ARM64;
  84         ret = do_bootm_states(cmdtp, flag, argc, argv,
  85 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  86                               BOOTM_STATE_RAMDISK |
  87 #endif
  88                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
  89                               BOOTM_STATE_OS_GO,
  90                               &images, 1);
  91
  92         return ret;
  93 }
  94
  95 #ifdef CONFIG_SYS_LONGHELP
  96 static char booti_help_text[] =
  97         "[addr [initrd[:size]] [fdt]]\n"
  98         "    - boot arm64 Linux Image stored in memory\n"
  99         "\tThe argument 'initrd' is optional and specifies the address\n"
 100         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 101         "\tspecifying the size of a RAW initrd.\n"
 102 #if defined(CONFIG_OF_LIBFDT)
 103         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 104         "\tthird argument providing the address of the device-tree blob\n"
 105         "\tis required. To boot a kernel with a device-tree blob but\n"
 106         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 107 #endif
 108         "";
 109 #endif
 110
 111 U_BOOT_CMD(
 112         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 113         "boot arm64 Linux Image image from memory", booti_help_text
 114 );