LXR uboot/arch/sandbox/lib/bootm.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (c) 2011 The Chromium OS Authors.
   4 * Copyright (c) 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk>
   5 */
   6
   7#include <common.h>
   8#include <bootstage.h>
   9#include <image.h>
  10#include <asm/io.h>
  11
  12#define LINUX_ARM_ZIMAGE_MAGIC  0x016f2818
  13
  14struct arm_z_header {
  15        uint32_t        code[9];
  16        uint32_t        zi_magic;
  17        uint32_t        zi_start;
  18        uint32_t        zi_end;
  19} __attribute__ ((__packed__));
  20
  21int bootz_setup(ulong image, ulong *start, ulong *end)
  22{
  23        uint8_t *zimage = map_sysmem(image, 0);
  24        struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage;
  25        int ret = 0;
  26
  27        if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
  28                uint8_t setup_sects = *(zimage + 0x1f1);
  29                uint32_t syssize =
  30                        le32_to_cpu(*(uint32_t *)(zimage + 0x1f4));
  31
  32                *start = 0;
  33                *end = (setup_sects + 1) * 512 + syssize * 16;
  34
  35                printf("setting up X86 zImage [ %ld - %ld ]\n",
  36                       *start, *end);
  37        } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) {
  38                *start = le32_to_cpu(arm_hdr->zi_start);
  39                *end = le32_to_cpu(arm_hdr->zi_end);
  40
  41                printf("setting up ARM zImage [ %ld - %ld ]\n",
  42                       *start, *end);
  43        } else {
  44                printf("Unrecognized zImage\n");
  45                ret = 1;
  46        }
  47
  48        unmap_sysmem((void *)image);
  49
  50        return ret;
  51}
  52
  53int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
  54{
  55        if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
  56                bootstage_mark(BOOTSTAGE_ID_RUN_OS);
  57                printf("## Transferring control to Linux (at address %08lx)...\n",
  58                       images->ep);
  59                printf("sandbox: continuing, as we cannot run Linux\n");
  60        }
  61
  62        return 0;
  63}
  64