diff options
Diffstat (limited to 'resources/utilities/ich9deblob/src/descriptor/descriptor.c')
| -rw-r--r-- | resources/utilities/ich9deblob/src/descriptor/descriptor.c | 51 |
1 files changed, 24 insertions, 27 deletions
diff --git a/resources/utilities/ich9deblob/src/descriptor/descriptor.c b/resources/utilities/ich9deblob/src/descriptor/descriptor.c index 3ef26732..7004c06d 100644 --- a/resources/utilities/ich9deblob/src/descriptor/descriptor.c +++ b/resources/utilities/ich9deblob/src/descriptor/descriptor.c @@ -75,11 +75,8 @@ struct DESCRIPTORREGIONRECORD descriptorMeRegionsForbidden(struct DESCRIPTORREGI * Disable the ME/Platform regions, re-locate Descriptor+Gbe+BIOS like so: * Descriptor(4K), then Gbe (8K), then the remainder of the image is the BIOS region. */ -struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRIPTORREGIONRECORD factoryDescriptorStruct, unsigned int factoryRomSize) +struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRIPTORREGIONRECORD descriptorStruct, unsigned int romSize) { - struct DESCRIPTORREGIONRECORD deblobbedDescriptorStruct; - memcpy(&deblobbedDescriptorStruct, &factoryDescriptorStruct, DESCRIPTORREGIONSIZE); - /* * Remove all those nasty blobs: * ----------------------------- @@ -89,7 +86,7 @@ struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRI * set number of regions from 4 -> 2 (0 based, so 4 means 5 and 2 * means 3. We want 3 regions: descriptor, gbe and bios, in that order) */ - deblobbedDescriptorStruct.flMaps.flMap0.NR = 2; + descriptorStruct.flMaps.flMap0.NR = 2; /* * There are 5 regions. Since we set the number now to 3, that means @@ -100,16 +97,16 @@ struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRI * Also set the LIMIT to 0. */ /* Disable (delete) the ME region */ - deblobbedDescriptorStruct.regionSection.flReg2.BASE = 0x1FFF; - deblobbedDescriptorStruct.regionSection.flReg2.LIMIT = 0; + descriptorStruct.regionSection.flReg2.BASE = 0x1FFF; + descriptorStruct.regionSection.flReg2.LIMIT = 0; /* Disable (delete) the Platform region */ - deblobbedDescriptorStruct.regionSection.flReg4.BASE = 0x1FFF; - deblobbedDescriptorStruct.regionSection.flReg4.LIMIT = 0; + descriptorStruct.regionSection.flReg4.BASE = 0x1FFF; + descriptorStruct.regionSection.flReg4.LIMIT = 0; /* Other steps needed for the deblobbing: */ - deblobbedDescriptorStruct.ichStraps.ichStrap0.meDisable = 1; /* Disable the ME in ICHSTRAP0 */ - deblobbedDescriptorStruct.mchStraps.mchStrap0.meDisable = 1; /* Disable the ME in MCHSTRAP0 */ - deblobbedDescriptorStruct.mchStraps.mchStrap0.tpmDisable = 1; /* Disable the TPM in MCHSTRAP0 */ + descriptorStruct.ichStraps.ichStrap0.meDisable = 1; /* Disable the ME in ICHSTRAP0 */ + descriptorStruct.mchStraps.mchStrap0.meDisable = 1; /* Disable the ME in MCHSTRAP0 */ + descriptorStruct.mchStraps.mchStrap0.tpmDisable = 1; /* Disable the TPM in MCHSTRAP0 */ /* * Removing the ME and Platform regions lets us do cool things, like: @@ -117,13 +114,13 @@ struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRI */ /* Relocate the Gbe region to begin at 4KiB (immediately after the flash descriptor) */ - deblobbedDescriptorStruct.regionSection.flReg3.BASE = DESCRIPTORREGIONSIZE >> FLREGIONBITSHIFT; - deblobbedDescriptorStruct.regionSection.flReg3.LIMIT = GBEREGIONSIZE_8K >> FLREGIONBITSHIFT; + descriptorStruct.regionSection.flReg3.BASE = DESCRIPTORREGIONSIZE >> FLREGIONBITSHIFT; + descriptorStruct.regionSection.flReg3.LIMIT = GBEREGIONSIZE_8K >> FLREGIONBITSHIFT; /* BIOS region (where coreboot/libreboot goes) can now fill the entire ROM image, * after the first 12KiB where the Descriptor+Gbe are. */ - deblobbedDescriptorStruct.regionSection.flReg1.BASE = (DESCRIPTORREGIONSIZE + GBEREGIONSIZE_8K) >> FLREGIONBITSHIFT; - deblobbedDescriptorStruct.regionSection.flReg1.LIMIT = (factoryRomSize >> FLREGIONBITSHIFT) - 1; + descriptorStruct.regionSection.flReg1.BASE = (DESCRIPTORREGIONSIZE + GBEREGIONSIZE_8K) >> FLREGIONBITSHIFT; + descriptorStruct.regionSection.flReg1.LIMIT = (romSize >> FLREGIONBITSHIFT) - 1; /* * Set region read/write access @@ -131,10 +128,10 @@ struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRI */ /* Host/CPU is allowed to read/write all regions. */ - deblobbedDescriptorStruct = descriptorHostRegionsUnlocked(deblobbedDescriptorStruct); + descriptorStruct = descriptorHostRegionsUnlocked(descriptorStruct); /* The ME is disallowed read-write access to all regions * (this is probably redundant, since the ME is already removed from libreboot) */ - deblobbedDescriptorStruct = descriptorMeRegionsForbidden(deblobbedDescriptorStruct); + descriptorStruct = descriptorMeRegionsForbidden(descriptorStruct); /* * Miscellaneous @@ -142,16 +139,16 @@ struct DESCRIPTORREGIONRECORD deblobbedDescriptorStructFromFactory(struct DESCRI */ /* Set OEM string to "LIBERATE" */ - deblobbedDescriptorStruct.oemSection.magicString[0] = 0x4C; - deblobbedDescriptorStruct.oemSection.magicString[1] = 0x49; - deblobbedDescriptorStruct.oemSection.magicString[2] = 0x42; - deblobbedDescriptorStruct.oemSection.magicString[3] = 0x45; - deblobbedDescriptorStruct.oemSection.magicString[4] = 0x52; - deblobbedDescriptorStruct.oemSection.magicString[5] = 0x41; - deblobbedDescriptorStruct.oemSection.magicString[6] = 0x54; - deblobbedDescriptorStruct.oemSection.magicString[7] = 0x45; + descriptorStruct.oemSection.magicString[0] = 0x4C; + descriptorStruct.oemSection.magicString[1] = 0x49; + descriptorStruct.oemSection.magicString[2] = 0x42; + descriptorStruct.oemSection.magicString[3] = 0x45; + descriptorStruct.oemSection.magicString[4] = 0x52; + descriptorStruct.oemSection.magicString[5] = 0x41; + descriptorStruct.oemSection.magicString[6] = 0x54; + descriptorStruct.oemSection.magicString[7] = 0x45; - return deblobbedDescriptorStruct; + return descriptorStruct; } /* |