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/*
* descriptor_gbe.c
* This file is part of the ich9deblob utility from the libreboot project
*
* Purpose: common descriptor/gbe functions used by ich9deblob
*
* Copyright (C) 2014 Steve Shenton <sgsit@libreboot.org>
* Francis Rowe <info@gluglug.org.uk>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include "descriptor_gbe.h"
/*
* create 12KiB file with descriptor, and then gbe immediately after.
*/
int notCreatedDescriptorGbeFile(struct DESCRIPTORREGIONRECORD descriptorStruct, struct GBEREGIONRECORD_8K gbeStruct8k, char* fileName)
{
FILE* fileStream = NULL;
/* These will have the structs copied to them */
char descriptorBuffer[DESCRIPTORREGIONSIZE];
char gbeBuffer8k[GBEREGIONSIZE_8K];
/* Copy the structs to buffers, to make writing them as files easier */
memcpy(&descriptorBuffer, &descriptorStruct, DESCRIPTORREGIONSIZE); /* descriptor */
memcpy(&gbeBuffer8k, &gbeStruct8k, GBEREGIONSIZE_8K); /* gbe */
/* delete old file before continuing */
remove(fileName);
/* open new file for writing the descriptor+gbe */
fileStream = fopen(fileName, "ab");
/* write the descriptor region into the first part */
if (DESCRIPTORREGIONSIZE != fwrite(descriptorBuffer, sizeof(char), DESCRIPTORREGIONSIZE, fileStream))
{
printf("\nerror: writing descriptor region failed\n");
return 1;
}
/* add gbe to the end of the file */
if (GBEREGIONSIZE_8K != fwrite(gbeBuffer8k, sizeof(char), GBEREGIONSIZE_8K, fileStream))
{
printf("\nerror: writing GBe region failed\n");
return 1;
}
fclose(fileStream);
printf("descriptor and gbe successfully written to the file: %s\n", fileName);
printf("Now do: dd if=deblobbed_descriptor.bin of=libreboot.rom bs=1 count=12k conv=notrunc\n");
printf("(in other words, add the modified descriptor+gbe to your ROM image)\n\n");
return 0;
}
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