qemu/roms/u-boot/arch/x86/lib/bootm.c

   1 /*
   2  * (C) Copyright 2002
   3  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   4  * Marius Groeger <mgroeger@sysgo.de>
   5  *
   6  * Copyright (C) 2001  Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <common.h>
  12 #include <command.h>
  13 #include <image.h>
  14 #include <u-boot/zlib.h>
  15 #include <asm/bootparam.h>
  16 #include <asm/byteorder.h>
  17 #include <asm/zimage.h>
  18
  19 #define COMMAND_LINE_OFFSET 0x9000
  20
  21 /*cmd_boot.c*/
  22 int do_bootm_linux(int flag, int argc, char * const argv[],
  23                 bootm_headers_t *images)
  24 {
  25         struct boot_params *base_ptr = NULL;
  26         ulong os_data, os_len;
  27         image_header_t *hdr;
  28         void *load_address;
  29
  30 #if defined(CONFIG_FIT)
  31         const void      *data;
  32         size_t          len;
  33 #endif
  34
  35         if (flag & BOOTM_STATE_OS_PREP)
  36                 return 0;
  37         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
  38                 return 1;
  39
  40         if (images->legacy_hdr_valid) {
  41                 hdr = images->legacy_hdr_os;
  42                 if (image_check_type(hdr, IH_TYPE_MULTI)) {
  43                         /* if multi-part image, we need to get first subimage */
  44                         image_multi_getimg(hdr, 0, &os_data, &os_len);
  45                 } else {
  46                         /* otherwise get image data */
  47                         os_data = image_get_data(hdr);
  48                         os_len = image_get_data_size(hdr);
  49                 }
  50 #if defined(CONFIG_FIT)
  51         } else if (images->fit_uname_os) {
  52                 int ret;
  53
  54                 ret = fit_image_get_data(images->fit_hdr_os,
  55                                         images->fit_noffset_os, &data, &len);
  56                 if (ret) {
  57                         puts("Can't get image data/size!\n");
  58                         goto error;
  59                 }
  60                 os_data = (ulong)data;
  61                 os_len = (ulong)len;
  62 #endif
  63         } else {
  64                 puts("Could not find kernel image!\n");
  65                 goto error;
  66         }
  67
  68 #ifdef CONFIG_CMD_ZBOOT
  69         base_ptr = load_zimage((void *)os_data, os_len, &load_address);
  70 #endif
  71
  72         if (NULL == base_ptr) {
  73                 printf("## Kernel loading failed ...\n");
  74                 goto error;
  75         }
  76
  77         if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
  78                         0, images->rd_start,
  79                         images->rd_end - images->rd_start)) {
  80                 printf("## Setting up boot parameters failed ...\n");
  81                 goto error;
  82         }
  83
  84         boot_zimage(base_ptr, load_address);
  85         /* does not return */
  86
  87 error:
  88         return 1;
  89 }