diff options
Diffstat (limited to 'projects/ich9gen/sources/src/ich9deblob.c')
| -rw-r--r-- | projects/ich9gen/sources/src/ich9deblob.c | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/projects/ich9gen/sources/src/ich9deblob.c b/projects/ich9gen/sources/src/ich9deblob.c index d79a3a89..b9153ed6 100644 --- a/projects/ich9gen/sources/src/ich9deblob.c +++ b/projects/ich9gen/sources/src/ich9deblob.c @@ -1,7 +1,7 @@ /* * ich9deblob.c * This file is part of the ich9deblob utility from the libreboot project - * + * * Purpose: disable and remove the ME from ich9m/gm45 systems in coreboot. * * Copyright (C) 2014 Steve Shenton <sgsit@libreboot.org> @@ -20,26 +20,26 @@ * 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 + * 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://communities.intel.com/community/wired/blog/2010/10/14/how-to-basic-eeprom-checksums @@ -51,18 +51,18 @@ int main() { struct DESCRIPTORREGIONRECORD descriptorStruct; uint8_t* descriptorBuffer = (uint8_t*)&descriptorStruct; - + struct GBEREGIONRECORD_8K gbeStruct8k; uint8_t* gbeBuffer8k = (uint8_t*)&gbeStruct8k; uint32_t gbeRegionStart; - + char* romFilename = "factory.rom"; char* descriptorGbeFilename = "deblobbed_descriptor.bin"; char* descriptorNoGbeFilename = "deblobbed_4kdescriptor.bin"; - + unsigned int bufferLength; unsigned int romSize; - + /* * ------------------------------------------------------------------ * Compatibility checks. This version of ich9deblob is not yet portable. @@ -71,7 +71,7 @@ int main() if (systemOrCompilerIncompatible(descriptorStruct, gbeStruct8k)) return 1; /* If true, fail with error message */ - + /* * ------------------------------------------------------------------ * Extract the descriptor and gbe regions from the factory.rom dump @@ -86,20 +86,20 @@ int main() return 1; } printf("\n%s opened successfully\n", romFilename); - - /* + + /* * Get the descriptor region dump from the factory.rom * (goes in factoryDescriptorBuffer variable) */ bufferLength = fread(descriptorBuffer, 1, DESCRIPTORREGIONSIZE, fp); - if (DESCRIPTORREGIONSIZE != bufferLength) // + 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 (descriptorDefinesGbeRegion(descriptorStruct)) { gbeRegionStart = descriptorStruct.regionSection.flReg3.BASE << FLREGIONBITSHIFT; @@ -125,13 +125,13 @@ int main() printf("\n%s size: [%i] bytes\n", romFilename, romSize); fclose(fp); - + /* Debugging (before modification) */ printDescriptorRegionLocations(descriptorStruct, "Original"); - if (descriptorDefinesGbeRegion(descriptorStruct)) + if (descriptorDefinesGbeRegion(descriptorStruct)) printGbeChecksumDataFromStruct8k(gbeStruct8k, "Original"); else printf("NO GBE REGION\n"); - + /* * ------------------------------------------------------------------ * Modify the descriptor and gbe regions, ready to go in libreboot.rom @@ -179,7 +179,7 @@ int main() return 1; } } - + /* * ------------------------------------------------------------------ * Generate ich9gen data (C code that will recreate the deblobbed descriptor+gbe from scratch) @@ -205,7 +205,7 @@ int main() return 1; } } - + if (descriptorDefinesGbeRegion(descriptorStruct)) { printf("The modified descriptor and gbe regions have also been dumped as src files: mkdescriptor.c, mkdescriptor.h, mkgbe.c, mkgbe.h\n"); |