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/*
* Copyright (C) 2014 Francis Rowe <info@gluglug.org.uk>
*
* 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;
uint8_t customMacAddress[6]; /* Only set/used if the user wants to */
struct GBEREGIONRECORD_8K gbeStruct8k = generatedGbeStruct8k();
struct DESCRIPTORREGIONRECORD descriptorStruct4M = generatedDescriptorStructRom4M();
struct DESCRIPTORREGIONRECORD descriptorStruct8M = generatedDescriptorStructRom8M();
/* 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++) {
customMacAddress[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')
customMacAddress[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')
customMacAddress[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')
customMacAddress[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;
}
}
}
/* Now that the new MAC address is verified, use it */
memcpy(&gbeStruct8k.main.macAddress, &customMacAddress, 6); /* Update MAC address in main Gbe */
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;
}
return 0;
}
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