233dbc1194
This change conditionally modifies the zboot command so that it can use the 32 bit boot protocol. This is necessary because the 16 bit realmode entry point assumes that it can call BIOS services which neither coreboot nor u-boot provide. Signed-off-by: Gabe Black <gabeblack@chromium.org>
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <image.h>
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#include <u-boot/zlib.h>
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#include <asm/byteorder.h>
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#include <asm/zimage.h>
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/*cmd_boot.c*/
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int do_bootm_linux(int flag, int argc, char * const argv[],
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bootm_headers_t *images)
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{
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void *base_ptr = NULL;
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ulong os_data, os_len;
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image_header_t *hdr;
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void *load_address;
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#if defined(CONFIG_FIT)
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const void *data;
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size_t len;
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#endif
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if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
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return 1;
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if (images->legacy_hdr_valid) {
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hdr = images->legacy_hdr_os;
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if (image_check_type(hdr, IH_TYPE_MULTI)) {
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/* if multi-part image, we need to get first subimage */
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image_multi_getimg(hdr, 0, &os_data, &os_len);
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} else {
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/* otherwise get image data */
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os_data = image_get_data(hdr);
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os_len = image_get_data_size(hdr);
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}
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#if defined(CONFIG_FIT)
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} else if (images->fit_uname_os) {
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ret = fit_image_get_data(images->fit_hdr_os,
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images->fit_noffset_os, &data, &len);
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if (ret) {
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puts("Can't get image data/size!\n");
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goto error;
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}
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os_data = (ulong)data;
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os_len = (ulong)len;
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#endif
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} else {
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puts("Could not find kernel image!\n");
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goto error;
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}
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#ifdef CONFIG_CMD_ZBOOT
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base_ptr = load_zimage((void *)os_data, os_len,
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images->rd_start, images->rd_end - images->rd_start,
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0, &load_address);
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#endif
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if (NULL == base_ptr) {
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printf("## Kernel loading failed ...\n");
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goto error;
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}
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#ifdef DEBUG
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printf("## Transferring control to Linux (at address %08x) ...\n",
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(u32)base_ptr);
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#endif
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/* we assume that the kernel is in place */
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printf("\nStarting kernel ...\n\n");
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boot_zimage(base_ptr, load_address);
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/* does not return */
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error:
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return 1;
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}
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