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authorFrancis Rowe <info@gluglug.org.uk>2014-12-25 16:25:49 (EST)
committer Francis Rowe <info@gluglug.org.uk>2014-12-25 16:25:49 (EST)
commita8b13d23f29a08026eaa308b8b09be7e9d1ff5a6 (patch)
tree0cdc767b9b44b94ca4fbec16bf88496bc4656dd4 /resources/utilities/ich9deblob/gbe/gbe.h
parent655ac91c5db8818c7cef7e9e44febaf36459d394 (diff)
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ich9deblob: moved src to src/, .o files to obj/
Diffstat (limited to 'resources/utilities/ich9deblob/gbe/gbe.h')
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1 files changed, 0 insertions, 101 deletions
diff --git a/resources/utilities/ich9deblob/gbe/gbe.h b/resources/utilities/ich9deblob/gbe/gbe.h
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-/*
- * gbe/gbe.h
- * This file is part of the ich9deblob utility from the libreboot project
- *
- * 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/>.
- */
-
-/*
- * Purpose: provide struct representing gbe region.
- * Map actual buffers of this regions, directly to instances of these
- * structs. This makes working with gbe really easy.
- */
-
-/*
- * bit fields used, corresponding to datasheet. See links to datasheets
- * and documentation in ich9deblob.c
- */
-
-#ifndef GBESTRUCT_H
-#define GBESTRUCT_H
-
-#include <stdio.h>
-#include <string.h>
-
-/* Size of the full gbe region in bytes */
-#define GBEREGIONSIZE_8K 0x2000
-/*
- * Size of each sub-region in gbe.
- * gbe contains two regions which
- * can be identical: main and backup.
- * These are each half the size of the full region
- */
-#define GBEREGIONSIZE_4K 0x1000
-
-/*
- * When adding up the first 0x3F 16-bit words
- * in a 4KiB GBE region, it should be equal
- * to 0xBABA
- */
-#define GBECHECKSUMTOTAL 0xBABA
-
-/*
- * These will have a modified descriptor+gbe based on what's in the factory.rom
- * These will be joined into a single 12KiB buffer (descriptor, then gbe) and saved to a file
- * NOTE: The GBE region of 8K is actually 2x 4K regions in a single region; both 4K blocks can be identical (and by default, are)
- * The 2nd one is a "backup", but we don't know when it's used. perhaps it's used when the checksum on the first one does not match?
- */
-
-/*
- * ---------------------------------------------------------------------
- * Gbe struct representing the data:
- * ---------------------------------------------------------------------
- */
-
-struct GBEREGIONRECORD_4K {
- unsigned char macAddress[6]; /* 0x03 words, or 0x06 bytes */
- unsigned char otherStuff[120]; /* 0x3c words, or 0x7E bytes */
- unsigned short checkSum; /* when added to the sum of all words above, this should match GBECHECKSUMTOTAL */
- unsigned char padding1[3968];
-};
-
-/* main and backup region in gbe */
-struct GBEREGIONRECORD_8K {
- struct GBEREGIONRECORD_4K main;
- struct GBEREGIONRECORD_4K backup;
- /*
- * Backup region:
- * This is actually "main" on X200, since the real main has a bad checksum
- * and other errors. You should do what you need on this one (if modifying
- * lenovobios's gbe region) and then copy to main
- */
-};
-
-/*
- * ---------------------------------------------------------------------
- * Function declarations (keep gcc/make happy. check them in gbe.c)
- * ---------------------------------------------------------------------
- */
-
-unsigned short gbeGetRegionWordFrom8kBuffer(int index, char* regionData);
-unsigned short gbeGetChecksumFrom8kBuffer(char* regionData, unsigned short desiredValue, int byteOffset);
-unsigned short gbeGetChecksumFrom4kStruct(struct GBEREGIONRECORD_4K gbeStruct4k, unsigned short desiredValue);
-struct GBEREGIONRECORD_8K deblobbedGbeStructFromFactory(struct GBEREGIONRECORD_8K factoryGbeStruct8k);
-void printGbeChecksumDataFromStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* romName, char* regionName);
-void printGbeChecksumDataFromStruct8k(struct GBEREGIONRECORD_8K gbeStruct8k, char* romName);
-
-#endif