diff options
| -rw-r--r-- | resources/utilities/ich9deblob/src/gbe/gbe.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/resources/utilities/ich9deblob/src/gbe/gbe.c b/resources/utilities/ich9deblob/src/gbe/gbe.c index baefec8..5f4cffc 100644 --- a/resources/utilities/ich9deblob/src/gbe/gbe.c +++ b/resources/utilities/ich9deblob/src/gbe/gbe.c @@ -35,20 +35,18 @@ /* Read a 16-bit unsigned int from a supplied region buffer */ uint16_t gbeGetRegionWordFrom8kBuffer(int wordOffset, uint8_t* regionData) { - return *((uint16_t*)(regionData + (wordOffset << 1))); + int byteOffset = wordOffset << 1; + + uint16_t* regionDataWordAddress = (uint16_t*)(regionData+byteOffset); + uint16_t regionWord = *regionDataWordAddress; + + return regionWord; } -/* - * gbe checksum calculation (algorithm based on datasheet) - */ +/* gbe checksum calculation (algorithm based on datasheet) */ uint16_t gbeGetChecksumFrom8kBuffer(uint8_t* regionData, uint16_t desiredValue, int byteOffset) { int i; - - /* - * byteOffset defines the byte address where the gbe begins in the buffer "regionData". - * However, this function works with 16-bit words. Shift the byte offset to the right for the word (16-bit) offset. - */ int wordOffset = byteOffset >> 1; uint16_t regionWord; /* store words here for adding to checksum */ @@ -59,6 +57,7 @@ uint16_t gbeGetChecksumFrom8kBuffer(uint8_t* regionData, uint16_t desiredValue, checksum += regionWord; } checksum = desiredValue - checksum; + return checksum; } @@ -67,6 +66,7 @@ uint16_t gbeGetChecksumFrom4kStruct(struct GBEREGIONRECORD_4K gbeStruct4k, uint1 { uint8_t gbeBuffer4k[GBEREGIONSIZE_4K]; memcpy(&gbeBuffer4k, &gbeStruct4k, GBEREGIONSIZE_4K); + return gbeGetChecksumFrom8kBuffer(gbeBuffer4k, desiredValue, 0); } |