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Diffstat (limited to 'util/ich9utils/src/ich9show.c')
| -rw-r--r-- | util/ich9utils/src/ich9show.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/util/ich9utils/src/ich9show.c b/util/ich9utils/src/ich9show.c deleted file mode 100644 index 4d71dadf..00000000 --- a/util/ich9utils/src/ich9show.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * ich9show.c - * Just a little hack by Leah to show the ICH9 region read/write status - * - * Purpose: disable and remove the ME from ich9m/gm45 systems in coreboot. - * - * Copyright (C) 2014 Steve Shenton <sgsit@libreboot.org> - * Copyright (C) 2014,2015,2019 Leah Rowe <info@minifree.org> - * - * 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/>. - */ - -/* Initially based on proof of concept by Steve Shenton. */ -/* Original utility can be found at https://gitorious.org/ich9descriptortool */ - -/* - * Read a factory.rom dump (ich9m/gm45 systems) 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/hardware/x200_remove_me.html for info plus links to datasheet (also linked below) - * - * Info about flash descriptor (read page 845 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://web.archive.org/web/20150912070329/https://communities.intel.com/community/wired/blog/2010/10/14/how-to-basic-eeprom-checksums - */ - -#include "ich9show.h" - -int main(int argc, char *argv[]) -{ - if(argc!=2) { - printf("Incorrect number of arguments. Please specify *one* ROM path.\n"); - return 1; - } /* TODO: Make ich9show support dumping stats of multiple ROM images */ - - struct DESCRIPTORREGIONRECORD descriptorStruct; - uint8_t* descriptorBuffer = (uint8_t*)&descriptorStruct; - - struct GBEREGIONRECORD_8K gbeStruct8k; - uint8_t* gbeBuffer8k = (uint8_t*)&gbeStruct8k; - uint32_t gbeRegionStart; - - char* romFilename = argv[1]; - - unsigned int bufferLength; - unsigned int romSize; - - /* - * ------------------------------------------------------------------ - * Compatibility checks. This version of ich9deblob is not yet portable. - * ------------------------------------------------------------------ - */ - - if (systemOrCompilerIncompatible(descriptorStruct, gbeStruct8k)) return 1; - /* If true, fail with error message */ - - /* - * ------------------------------------------------------------------ - * Extract the descriptor and gbe regions from the factory.rom dump - * ------------------------------------------------------------------ - */ - FILE* fp = NULL; - fp = fopen(romFilename, "rb"); - if (NULL == fp) - { - printf("\nerror: could not open %s\n", romFilename); - fclose(fp); - return 1; - } - printf("\n%s opened successfully\n", romFilename); - - /* - * Get the descriptor region dump from the the given ROM - * (goes in factoryDescriptorBuffer variable) - */ - bufferLength = fread(descriptorBuffer, 1, DESCRIPTORREGIONSIZE, fp); - if (DESCRIPTORREGIONSIZE != bufferLength) // - { - printf("\nerror: could not read descriptor from %s (%i) bytes read\n", romFilename, bufferLength); - fclose(fp); - return 1; - } - printf("\ndescriptor region read successfully\n"); - - if(!validDescriptor(descriptorStruct)) { - printf("Invalid input: incorrect signature in the given descriptor."); - fclose(fp); - return 1; - } - - if (descriptorDefinesGbeRegion(descriptorStruct)) - { - gbeRegionStart = descriptorStruct.regionSection.flReg3.BASE << FLREGIONBITSHIFT; - - /* - * Set offset so that we can read the data from - * the gbe region - */ - fseek(fp, gbeRegionStart, SEEK_SET); - /* Read the gbe data from the given ROM and put it in factoryGbeBuffer8k */ - bufferLength = fread(gbeBuffer8k, 1, GBEREGIONSIZE_8K, fp); - if (GBEREGIONSIZE_8K != bufferLength) - { - printf("\nerror: could not read GBe region from %s (%i) bytes read\n", romFilename, bufferLength); - fclose(fp); - return 1; - } - printf("\ngbe (8KiB) region read successfully\n"); - } - - fseek(fp, 0L, SEEK_END); - romSize = ftell(fp); - printf("\n%s size: [%i] bytes\n", romFilename, romSize); - - fclose(fp); - - showDescriptorData(descriptorStruct); - - if (descriptorDefinesGbeRegion(descriptorStruct)) - { - printf("\nMain GbE region:\n\n"); - showGbeData(gbeStruct8k.main); - printf("\n"); - - printf("\nBackup GbE region:\n\n"); - showGbeData(gbeStruct8k.backup); - printf("\n"); - } - - return 0; -} |