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Diffstat (limited to 'src/ich9gen.c')
| -rw-r--r-- | src/ich9gen.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/src/ich9gen.c b/src/ich9gen.c new file mode 100644 index 0000000..8054675 --- /dev/null +++ b/src/ich9gen.c @@ -0,0 +1,203 @@ +/* + * Copyright (C) 2014, 2015, 2019 Leah Rowe <info@minifree.org> + * Copyright (C) 2016 Swift Geek <swiftgeek@gmail.com> + * + * 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/>. + */ + +/* Generate deblobbed descriptor and gbe 12KiB file from scratch + * without relying on a factory.rom dump */ + +#include "ich9gen.h" + +int main(int argc, char *argv[]) +{ + int i, j; + + struct GBEREGIONRECORD_8K gbeStruct8k = generatedGbeStruct8k(); + struct DESCRIPTORREGIONRECORD descriptorStruct4M = generatedDescriptorStruct(ROMSIZE_4MB, WITHGBE); + struct DESCRIPTORREGIONRECORD descriptorStruct8M = generatedDescriptorStruct(ROMSIZE_8MB, WITHGBE); + struct DESCRIPTORREGIONRECORD descriptorStruct16M = generatedDescriptorStruct(ROMSIZE_16MB, WITHGBE); + struct DESCRIPTORREGIONRECORD descriptorStructNoGbe4M = generatedDescriptorStruct(ROMSIZE_4MB, WITHOUTGBE); + struct DESCRIPTORREGIONRECORD descriptorStructNoGbe8M = generatedDescriptorStruct(ROMSIZE_8MB, WITHOUTGBE); + struct DESCRIPTORREGIONRECORD descriptorStructNoGbe16M = generatedDescriptorStruct(ROMSIZE_16MB, WITHOUTGBE); + + /* Only for the compatibility checks */ + struct DESCRIPTORREGIONRECORD dummyDescriptorStruct; + struct GBEREGIONRECORD_8K dummyGbeStruct8k; + + /* + * ------------------------------------------------------------------ + * Compatibility checks. This version of ich9deblob is not yet portable. + * ------------------------------------------------------------------ + */ + + if (systemOrCompilerIncompatible(dummyDescriptorStruct, dummyGbeStruct8k)) return 1; + /* If true, fail with error message */ + + /* + * ------------------------------------------------------------------ + * Arguments given on the terminal + * ------------------------------------------------------------------ + */ + + + if(argc==3) { + + /* If user provides their own MAC address, it will be used. + * Otherwise, ich9gen will simply use the default one. + * + * However, if the user provides an invalid MAC address, then ich9gen + * will exit. */ + if(0==strcmp(argv[1],"--macaddress")) { + /* 6 hex chars format (example): AA:BB:CC:DD:EE:FF */ + if (strlen(argv[2]) != 17) { + printf("ich9gen: invalid mac address format (wrong length)\n"); + return 1; + } + for(i=2; i<14; i+=3) { + if(argv[2][i]!=':') { + printf("ich9gen: invalid mac address format (non-colon characters used as spacing)\n"); + return 1; + } + } + for(i=0; i<6; i++) { + gbeStruct8k.main.macAddress[i] = 0; + + /* Go through each nibble of the byte */ + for(j=0; j<2; j++) { + if(argv[2][(i*3)+j]>='a' && argv[2][(i*3)+j]<='f') + gbeStruct8k.main.macAddress[i] |= (uint8_t)((argv[2][(i*3)+j] - 87) << ((j^1) << 2)); + else if(argv[2][(i*3)+j]>='A' && argv[2][(i*3)+j]<='F') + gbeStruct8k.main.macAddress[i] |= (uint8_t)((argv[2][(i*3)+j] - 55) << ((j^1) << 2)); + else if(argv[2][(i*3)+j]>='0' && argv[2][(i*3)+j]<='9') + gbeStruct8k.main.macAddress[i] |= (uint8_t)((argv[2][(i*3)+j] - 48) << ((j^1) << 2)); + else { + printf("ich9gen: invalid mac address format (non-hex characters)\n"); + return 1; + } + } + } + + gbeStruct8k.main.checkSum = gbeGetChecksumFrom4kStruct(gbeStruct8k.main, GBECHECKSUMTOTAL); /* Fix the checksum */ + memcpy(&gbeStruct8k.backup, &gbeStruct8k.main, GBEREGIONSIZE_4K); /* Copy to the backup */ + + /* Generate ich9gen data (C code for Gbe region): */ + + /* mkgbe.h */ + if (notCreatedHFileForGbeCFile("mkgbe.h", "mkgbe.c")) { + return 1; + } /* and now mkgbe.c */ + if (notCreatedCFileFromGbeStruct4k(gbeStruct8k.backup, "mkgbe.c", "mkgbe.h")) { + return 1; + } + + printf("You selected to change the MAC address in the Gbe section. This has been done.\n\n"); + + printf("The modified gbe region has also been dumped as src files: mkgbe.c, mkgbe.h\n"); + printf("To use these in ich9gen, place them in src/ich9gen/ and re-build ich9gen.\n\n"); + } + + } + + /* + * ------------------------------------------------------------------ + * Generate the 12KiB files, ready to be used in a libreboot image + * ------------------------------------------------------------------ + */ + + if (notCreatedDescriptorGbeFile(descriptorStruct4M, gbeStruct8k, "ich9fdgbe_4m.bin")) { + return 1; + } + + if (notCreatedDescriptorGbeFile(descriptorStruct8M, gbeStruct8k, "ich9fdgbe_8m.bin")) { + return 1; + } + + if (notCreatedDescriptorGbeFile(descriptorStruct16M, gbeStruct8k, "ich9fdgbe_16m.bin")) { + return 1; + } + + /* + * ------------------------------------------------------------------ + * Generate the 12KiB files, ready to be used in a libreboot image + * These are special descriptor files where the flash chip is set to read-only + * in FLMSTR1 + * ------------------------------------------------------------------ + */ + + descriptorStruct4M = descriptorHostRegionsReadOnly(descriptorStruct4M); + descriptorStruct8M = descriptorHostRegionsReadOnly(descriptorStruct8M); + descriptorStruct16M = descriptorHostRegionsReadOnly(descriptorStruct16M); + + if (notCreatedDescriptorGbeFile(descriptorStruct4M, gbeStruct8k, "ich9fdgbe_4m_ro.bin")) { + return 1; + } + + if (notCreatedDescriptorGbeFile(descriptorStruct8M, gbeStruct8k, "ich9fdgbe_8m_ro.bin")) { + return 1; + } + + if (notCreatedDescriptorGbeFile(descriptorStruct16M, gbeStruct8k, "ich9fdgbe_16m_ro.bin")) { + return 1; + } + + /* + * ------------------------------------------------------------------ + * Generate the 4KiB files (descriptors without GbE), ready to be used in a libreboot image + * In these descriptors, the onboard Intel GbE NIC is disabled; a discrete one is used instead + * ------------------------------------------------------------------ + */ + + if (notCreated4kDescriptorFile(descriptorStructNoGbe4M, "ich9fdnogbe_4m.bin")) { + return 1; + } + + if (notCreated4kDescriptorFile(descriptorStructNoGbe8M, "ich9fdnogbe_8m.bin")) { + return 1; + } + + if (notCreated4kDescriptorFile(descriptorStructNoGbe16M, "ich9fdnogbe_16m.bin")) { + return 1; + } + + /* + * ------------------------------------------------------------------ + * Generate the 4KiB files (descriptors without GbE), ready to be used in a libreboot image + * In these descriptors, the onboard Intel GbE NIC is disabled; a discrete one is used instead + * + * This is a special version where the flash chip is read-only as specified + * in flmstr1 + * + * ------------------------------------------------------------------ + */ + + descriptorStructNoGbe4M = descriptorHostRegionsReadOnly(descriptorStructNoGbe4M); + descriptorStructNoGbe8M = descriptorHostRegionsReadOnly(descriptorStructNoGbe8M); + descriptorStructNoGbe16M = descriptorHostRegionsReadOnly(descriptorStructNoGbe16M); + + if (notCreated4kDescriptorFile(descriptorStructNoGbe4M, "ich9fdnogbe_4m_ro.bin")) { + return 1; + } + + if (notCreated4kDescriptorFile(descriptorStructNoGbe8M, "ich9fdnogbe_8m_ro.bin")) { + return 1; + } + + if (notCreated4kDescriptorFile(descriptorStructNoGbe16M, "ich9fdnogbe_16m_ro.bin")) { + return 1; + } + + return 0; +} |