LXR uboot/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 */
  19static 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        lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  52
  53        /*
  54         * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  55         * have a header that provide this informaiton.
  56         */
  57        if (bootm_find_images(flag, argc, argv))
  58                return 1;
  59
  60        return 0;
  61}
  62
  63int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  64{
  65        int ret;
  66
  67        /* Consume 'booti' */
  68        argc--; argv++;
  69
  70        if (booti_start(cmdtp, flag, argc, argv, &images))
  71                return 1;
  72
  73        /*
  74         * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
  75         * disable interrupts ourselves
  76         */
  77        bootm_disable_interrupts();
  78
  79        images.os.os = IH_OS_LINUX;
  80        images.os.arch = IH_ARCH_ARM64;
  81        ret = do_bootm_states(cmdtp, flag, argc, argv,
  82#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  83                              BOOTM_STATE_RAMDISK |
  84#endif
  85                              BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
  86                              BOOTM_STATE_OS_GO,
  87                              &images, 1);
  88
  89        return ret;
  90}
  91
  92#ifdef CONFIG_SYS_LONGHELP
  93static char booti_help_text[] =
  94        "[addr [initrd[:size]] [fdt]]\n"
  95        "    - boot arm64 Linux Image stored in memory\n"
  96        "\tThe argument 'initrd' is optional and specifies the address\n"
  97        "\tof an initrd in memory. The optional parameter ':size' allows\n"
  98        "\tspecifying the size of a RAW initrd.\n"
  99#if defined(CONFIG_OF_LIBFDT)
 100        "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 101        "\tthird argument providing the address of the device-tree blob\n"
 102        "\tis required. To boot a kernel with a device-tree blob but\n"
 103        "\twithout an initrd image, use a '-' for the initrd argument.\n"
 104#endif
 105        "";
 106#endif
 107
 108U_BOOT_CMD(
 109        booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 110        "boot arm64 Linux Image image from memory", booti_help_text
 111);
 112