mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
f6f35c057b
Why? This way we don't need to recompile the image when the size of the LinuxBIOS image changes. This alows building images for 50 motherboards and equipping each with 10 payloads, resulting in 500 images while you only have to build each payload once and each motherboard, too. There's also a small "fix" allowing the compression type to be case insensitive. Not really relevant I guess. Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@427 f3766cd6-281f-0410-b1cd-43a5c92072e9
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/*
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* lar - LinuxBIOS archiver
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*
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* Copyright (C) 2007 coresystems GmbH
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* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "lar.h"
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#include "lib.h"
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char *bootblock_code;
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int bootblock_len;
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int load_bootblock(const char *bootblock)
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{
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struct stat statbuf;
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int ret, filelen;
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FILE *fh;
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ret = stat(bootblock, &statbuf);
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if (ret) {
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fprintf(stderr, "No such file %s\n", bootblock);
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exit(1);
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}
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bootblock_len = statbuf.st_size;
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/* We might want to find additional criteria
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* for identifying a bootblock file
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*/
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if (bootblock_len != BOOTBLOCK_SIZE) {
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printf("Warning: %s does not seem to be a bootblock, "
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"so ignore it\n", bootblock);
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bootblock_code=NULL;
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bootblock_len=0;
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// Is this an error condition?
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}
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bootblock_code = malloc(bootblock_len);
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if (!bootblock_code) {
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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fh = fopen(bootblock, "r");
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if (!fh) {
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fprintf(stderr, "Error while reading file %s\n", bootblock);
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exit(1);
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}
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fread(bootblock_code, bootblock_len, 1, fh);
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fclose(fh);
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return ret;
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}
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int fixup_bootblock(void)
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{
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int i;
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uint32_t *size_pos;
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/* This cleans out the area after the reset vector */
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for(i=13; i>0; i--)
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bootblock_code[bootblock_len - i] = '\0';
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/* add lar size to image */
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size_pos=(uint32_t *)(bootblock_code+bootblock_len-12);
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size_pos[0] = get_larsize();
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return 0;
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}
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