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  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28 #include <command.h>
  29 #include <image.h>
  30 #include <u-boot/zlib.h>
  31 #include <asm/bootparam.h>
  32 #include <asm/byteorder.h>
  33 #include <asm/zimage.h>
  34
  35 #define COMMAND_LINE_OFFSET 0x9000
  36
  37 /*cmd_boot.c*/
  38 int do_bootm_linux(int flag, int argc, char * const argv[],
  39                 bootm_headers_t *images)
  40 {
  41         struct boot_params *base_ptr = NULL;
  42         ulong os_data, os_len;
  43         image_header_t *hdr;
  44         void *load_address;
  45
  46 #if defined(CONFIG_FIT)
  47         const void      *data;
  48         size_t          len;
  49 #endif
  50
  51         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
  52                 return 1;
  53
  54         if (images->legacy_hdr_valid) {
  55                 hdr = images->legacy_hdr_os;
  56                 if (image_check_type(hdr, IH_TYPE_MULTI)) {
  57                         /* if multi-part image, we need to get first subimage */
  58                         image_multi_getimg(hdr, 0, &os_data, &os_len);
  59                 } else {
  60                         /* otherwise get image data */
  61                         os_data = image_get_data(hdr);
  62                         os_len = image_get_data_size(hdr);
  63                 }
  64 #if defined(CONFIG_FIT)
  65         } else if (images->fit_uname_os) {
  66                 ret = fit_image_get_data(images->fit_hdr_os,
  67                                         images->fit_noffset_os, &data, &len);
  68                 if (ret) {
  69                         puts("Can't get image data/size!\n");
  70                         goto error;
  71                 }
  72                 os_data = (ulong)data;
  73                 os_len = (ulong)len;
  74 #endif
  75         } else {
  76                 puts("Could not find kernel image!\n");
  77                 goto error;
  78         }
  79
  80 #ifdef CONFIG_CMD_ZBOOT
  81         base_ptr = load_zimage((void *)os_data, os_len, &load_address);
  82 #endif
  83
  84         if (NULL == base_ptr) {
  85                 printf("## Kernel loading failed ...\n");
  86                 goto error;
  87         }
  88
  89         if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
  90                         0, images->rd_start,
  91                         images->rd_end - images->rd_start)) {
  92                 printf("## Setting up boot parameters failed ...\n");
  93                 goto error;
  94         }
  95
  96         boot_zimage(base_ptr, load_address);
  97         /* does not return */
  98
  99 error:
 100         return 1;
 101 }