From a8b13d23f29a08026eaa308b8b09be7e9d1ff5a6 Mon Sep 17 00:00:00 2001 From: Francis Rowe Date: Thu, 25 Dec 2014 16:25:49 -0500 Subject: ich9deblob: moved src to src/, .o files to obj/ --- (limited to 'resources/utilities/ich9deblob/ich9deblob.c') diff --git a/resources/utilities/ich9deblob/ich9deblob.c b/resources/utilities/ich9deblob/ich9deblob.c deleted file mode 100644 index ee549d2..0000000 --- a/resources/utilities/ich9deblob/ich9deblob.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * ich9deblob.c - * This file is part of the ich9deblob utility from the libreboot project - * - * Purpose: disable and remove the ME from ich9m/gm45 machines in coreboot. - * - * Copyright (C) 2014 Steve Shenton - * Francis Rowe - * - * 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 . - */ - -/* Initially based on proof of concept by Steve Shenton. */ - -/* - * Read a factory.rom dump (ich9m/gm45 machines) and - * modify the flash descriptor to remove all regions except descriptor, - * Gbe and BIOS. Set BIOS region to full size of the ROM image (after - * the flash descriptor and gbe). Basically, deblob the descriptor. - * - * This will will generate a concatenated descriptor+gbe dump suitable - * for use in libreboot. Currently tested: ThinkPad X200 (coreboot/libreboot) - */ - -/* - * See docs/hcl/x200_remove_me.html for info plus links to datasheet (also linked below) - * - * Info about flash descriptor (read page 850 onwards): - * http://www.intel.co.uk/content/dam/doc/datasheet/io-controller-hub-9-datasheet.pdf - * - * Info about Gbe region (read whole datasheet): - * http://www.intel.co.uk/content/dam/doc/application-note/i-o-controller-hub-9m-82567lf-lm-v-nvm-map-appl-note.pdf - * https://communities.intel.com/community/wired/blog/2010/10/14/how-to-basic-eeprom-checksums - */ - -#include "ich9deblob.h" - -int main(int argc, char *argv[]) -{ - /* - * descriptor region. Will have an actual descriptor struct mapped to it (from the factory.rom dump) - * and then it will be modified (deblobbed) to remove the ME/AMT - */ - char factoryDescriptorBuffer[DESCRIPTORREGIONSIZE]; - struct DESCRIPTORREGIONRECORD factoryDescriptorStruct; - struct DESCRIPTORREGIONRECORD deblobbedDescriptorStruct; - - /* - * gbe region. Well have actual gbe buffer mapped to it (from the factory.rom dump) - * and then it will be modified to correct the main region - */ - char factoryGbeBuffer8k[GBEREGIONSIZE_8K]; - struct GBEREGIONRECORD_8K factoryGbeStruct8k; - struct GBEREGIONRECORD_8K deblobbedGbeStruct8k; - - /* - * Used to store the location of the Gbe - * region inside the factory.rom image. - */ - unsigned int factoryGbeRegionStart; - - /* names of the files that this utility will handle */ - char* factoryRomFilename = "factory.rom"; /* user-supplied factory.bin dump (original firmware) */ - char* deblobbedDescriptorFilename = "deblobbed_descriptor.bin"; /* descriptor+gbe: to be dd'd to beginning of a libreboot image */ - - /* Used when reading the factory.rom to extract descriptor/gbe regions */ - unsigned int bufferLength; - - /* For storing the size of the factory.rom dump in bytes */ - unsigned int factoryRomSize; - - /* - * ------------------------------------------------------------------ - * Compatibility checks. This version of ich9deblob is not yet portable. - * ------------------------------------------------------------------ - */ - - if (systemOrCompilerIncompatible(factoryDescriptorStruct, factoryGbeStruct8k)) return 1; - /* If true, fail with error message */ - - /* - * ------------------------------------------------------------------ - * Extract the descriptor and gbe regions from the factory.rom dump - * ------------------------------------------------------------------ - */ - FILE* fileStream = NULL; - fileStream = fopen(factoryRomFilename, "rb"); /* open factory.rom */ - if (NULL == fileStream) - { - printf("\nerror: could not open factory.rom\n"); - return 1; - } - printf("\nfactory.rom opened successfully\n"); - - /* - * Get the descriptor region dump from the factory.rom - * (goes in factoryDescriptorBuffer variable) - */ - bufferLength = fread(factoryDescriptorBuffer, sizeof(char), DESCRIPTORREGIONSIZE, fileStream); - if (DESCRIPTORREGIONSIZE != bufferLength) // - { - printf("\nerror: could not read descriptor from factory.rom (%i) bytes read\n", bufferLength); - return 1; - } - printf("\ndescriptor region read successfully\n"); - /* - * copy descriptor buffer into descriptor struct memory - * factoryDescriptorStruct is an instance of a struct that actually - * defines the locations of all these variables in the descriptor, - * as defined in the datasheets. This allows us to map the extracted - * descriptor over the struct so that it can then be modified - * for libreboot's purpose - */ - memcpy(&factoryDescriptorStruct, &factoryDescriptorBuffer, DESCRIPTORREGIONSIZE); - /* - * ^ the above is just for reference if needed. The modifications will be made here: - */ - memcpy(&deblobbedDescriptorStruct, &factoryDescriptorBuffer, DESCRIPTORREGIONSIZE); - - /* - * Get the gbe region dump from the factory.rom - */ - - /* - * get original GBe region location - * (it will be moved to the beginning of the flash, after the descriptor region) - * note for example, factoryGbeRegionStart is set to <