diff options
Diffstat (limited to 'projects/ich9gen/sources/src/gbe/gbe.c')
| -rw-r--r-- | projects/ich9gen/sources/src/gbe/gbe.c | 78 |
1 files changed, 39 insertions, 39 deletions
diff --git a/projects/ich9gen/sources/src/gbe/gbe.c b/projects/ich9gen/sources/src/gbe/gbe.c index d04b8f2a..6bd41549 100644 --- a/projects/ich9gen/sources/src/gbe/gbe.c +++ b/projects/ich9gen/sources/src/gbe/gbe.c @@ -18,7 +18,7 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ - + /* * Provide gbe related functions. */ @@ -40,7 +40,7 @@ uint16_t gbeGetChecksumFrom4kBuffer(uint16_t* gbeWord, uint16_t desiredValue, in for (wordOffset = 0; wordOffset < 0x3F; wordOffset++) total += gbeWord[wordOffset + (gbeRegionBase>>1)]; - + return desiredValue - total; } @@ -51,25 +51,25 @@ uint16_t gbeGetChecksumFrom4kStruct(struct GBEREGIONRECORD_4K gbeStruct4k, uint1 } /* modify the gbe region extracted from a factory.rom dump */ -struct GBEREGIONRECORD_8K deblobbedGbeStructFromFactory(struct GBEREGIONRECORD_8K gbeStruct8k) -{ +struct GBEREGIONRECORD_8K deblobbedGbeStructFromFactory(struct GBEREGIONRECORD_8K gbeStruct8k) +{ unsigned int i; - + /* * http://www.intel.co.uk/content/dam/doc/application-note/82573-nvm-map-appl-note.pdf - * That is a datasheet for a later chipset. Word 40H-53H seems (as per this datasheet) to be for AMT. + * That is a datasheet for a later chipset. Word 40H-53H seems (as per this datasheet) to be for AMT. * Writing over it doesn't seem to cause any harm, since the ME/AMT is already removed in libreboot. */ for(i = 0; i < sizeof(gbeStruct8k.backup.padding); i++) { gbeStruct8k.backup.padding[i] = 0xFF; /* FF is correct. In the struct, this is a char buffer. */ } /* We really only need to do this for words 40h-53h, but let's just nuke the whole lot. It's all 0xFF anyway. */ - + /* Fix the checksum */ gbeStruct8k.backup.checkSum = gbeGetChecksumFrom4kStruct(gbeStruct8k.backup, GBECHECKSUMTOTAL); - + /* Main Gbe region on X200 (as shipped by Lenovo) is broken. Fix it by over-writing it with the contents of the backup */ memcpy(&gbeStruct8k.main, &gbeStruct8k.backup, GBEREGIONSIZE_4K); - + return gbeStruct8k; } @@ -81,46 +81,46 @@ struct GBEREGIONRECORD_8K deblobbedGbeStructFromFactory(struct GBEREGIONRECORD_8 /* * Generate a C (.h) header file for the C source file made by notCreatedCFileFromGbeStruct4k() - * + * * Output it to a file. */ -int notCreatedHFileForGbeCFile(char* outFileName, char* cFileName) -{ +int notCreatedHFileForGbeCFile(char* outFileName, char* cFileName) +{ remove(outFileName); /* Remove the old file before continuing */ - + /* Open the file that will be written to */ FILE* fp = fopen(outFileName, "w+"); /* ------------------------------ */ - + fprintf(fp, "/* %s: generated C code from ich9deblob */\n", outFileName); fprintf(fp, "/* .h header file for the gbe-generating C code (%s) */\n\n", cFileName); - + fprintf(fp, "#ifndef ICH9GEN_MKGBE_H\n"); fprintf(fp, "#define ICH9GEN_MKGBE_H\n\n"); - + fprintf(fp, "#include <stdio.h>\n"); fprintf(fp, "#include <string.h>\n"); fprintf(fp, "#include \"../gbe/gbe.h\"\n\n"); - + fprintf(fp, "struct GBEREGIONRECORD_4K generatedGbeStruct4k();\n"); fprintf(fp, "struct GBEREGIONRECORD_8K generatedGbeStruct8k();\n\n"); - + fprintf(fp, "#endif\n"); - + /* ------------------------------ */ - + fclose(fp); /* Always close the file when done. */ - + return 0; } /* * Generate a C source file that initializes the same data from a given * 4KiB Gbe data structure. - * + * * It will simply copy the 4KiB struct at the end to make a full 8KiB struct. * So just pass a working 4KiB Gbe struct here and you're good to go. - * + * * Output it to a file. */ int notCreatedCFileFromGbeStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* outFileName, char* headerFileName) @@ -128,22 +128,22 @@ int notCreatedCFileFromGbeStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* int i; int paddingSize; int paddingIdentical; - + remove(outFileName); /* Remove the old file before continuing */ - + /* Open the file that will be written to */ FILE* fp = fopen(outFileName, "w+"); /* ------------------------------ */ - + fprintf(fp, "/* %s: generated C code from ich9deblob */\n", outFileName); fprintf(fp, "/* .c source file for the gbe-generating C code */\n\n"); - + fprintf(fp, "#include \"%s\"\n\n", headerFileName); - + fprintf(fp, "/* Generate a 4KiB Gbe struct, with default values. */\n"); fprintf(fp, "/* Read ../gbe/gbe.h for an explanation of the default values used here */\n\n"); - + fprintf(fp, "struct GBEREGIONRECORD_4K generatedGbeStruct4k()\n"); fprintf(fp, "{\n"); fprintf(fp, " int i;\n"); @@ -402,7 +402,7 @@ int notCreatedCFileFromGbeStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* fprintf(fp, "\n"); fprintf(fp, " return gbeStruct4k;\n"); fprintf(fp, "}\n\n"); - + fprintf(fp, "struct GBEREGIONRECORD_8K generatedGbeStruct8k()\n"); fprintf(fp, "{\n"); fprintf(fp, " struct GBEREGIONRECORD_8K gbeStruct8k;\n"); @@ -410,11 +410,11 @@ int notCreatedCFileFromGbeStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* fprintf(fp, " memcpy(&gbeStruct8k.backup, &gbeStruct8k.main, GBEREGIONSIZE_4K);\n"); fprintf(fp, " return gbeStruct8k;\n"); fprintf(fp, "}\n\n"); - + /* ------------------------------ */ - + fclose(fp); /* Always close the file when done. */ - + return 0; } @@ -431,24 +431,24 @@ int notCreatedCFileFromGbeStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* void printGbeChecksumDataFromStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, char* romName, char* regionName) { printf( - "%s Gbe (%s): calculated Gbe checksum: 0x%hx and actual GBe checksum: 0x%hx\n", + "%s Gbe (%s): calculated Gbe checksum: 0x%hx and actual GBe checksum: 0x%hx\n", romName, regionName, - gbeGetChecksumFrom4kStruct(gbeStruct4k, GBECHECKSUMTOTAL), + gbeGetChecksumFrom4kStruct(gbeStruct4k, GBECHECKSUMTOTAL), gbeStruct4k.checkSum ); - + return; } /* - * show debugging info: show calculated (correct) gbe checksum and what + * show debugging info: show calculated (correct) gbe checksum and what * is actually stored, in a 8K gbe struct. Do so for main and backup regions. */ void printGbeChecksumDataFromStruct8k(struct GBEREGIONRECORD_8K gbeStruct8k, char* romName) -{ +{ printGbeChecksumDataFromStruct4k(gbeStruct8k.main, romName, "main"); printGbeChecksumDataFromStruct4k(gbeStruct8k.backup, romName, "backup"); - + return; } |