mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 02:36:39 +09:00
69370d144a
If vboot successfully verifies a kernel, it will leave it in place and basically ready to boot. The zeropage table which is part of the x86 boot protocol is at the end of the kernel, though, instead of the beginning, and because the image is already in place there's no need to copy it around. This change refactors the code which implements the zboot command so that the configuration of the zeropage table and loading the pieces of the kernel into memory are done separately. Also, because the command line goes before the zeropage table in vboot which is somewhat incompatible with the normal protocol, where to put the command line is a now a parameter instead of being hard coded. Signed-off-by: Gabe Black <gabeblack@chromium.org>
110 lines
2.8 KiB
C
110 lines
2.8 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/bootparam.h>
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#include <asm/byteorder.h>
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#include <asm/zimage.h>
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#define COMMAND_LINE_OFFSET 0x9000
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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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struct boot_params *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, &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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if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
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0, images->rd_start,
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images->rd_end - images->rd_start)) {
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printf("## Setting up boot parameters 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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