summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorFrancis Rowe <info@gluglug.org.uk>2014-12-23 21:20:47 (EST)
committer Francis Rowe <info@gluglug.org.uk>2014-12-23 21:20:47 (EST)
commit44dbb6e5e4160ff8663df9f176bb6313cabb8ad1 (patch)
treec143757549e2e12af04c31d949159e3963a72f09
parent7f550097fa1089c6072e3373648a2278ee3b89d4 (diff)
downloadlibreboot-44dbb6e5e4160ff8663df9f176bb6313cabb8ad1.zip
libreboot-44dbb6e5e4160ff8663df9f176bb6313cabb8ad1.tar.gz
libreboot-44dbb6e5e4160ff8663df9f176bb6313cabb8ad1.tar.bz2
ich9deblob: add define for 0xBABA gbe checksum and use it
-rw-r--r--resources/utilities/ich9deblob/gbe/gbe.c4
-rw-r--r--resources/utilities/ich9deblob/gbe/gbe.h9
2 files changed, 10 insertions, 3 deletions
diff --git a/resources/utilities/ich9deblob/gbe/gbe.c b/resources/utilities/ich9deblob/gbe/gbe.c
index 3caa3ee..417f37b 100644
--- a/resources/utilities/ich9deblob/gbe/gbe.c
+++ b/resources/utilities/ich9deblob/gbe/gbe.c
@@ -86,7 +86,7 @@ struct GBEREGIONRECORD_8K deblobbedGbeStructFromFactory(struct GBEREGIONRECORD_8
struct GBEREGIONRECORD_8K deblobbedGbeStruct8k;
memcpy(&deblobbedGbeStruct8k, &factoryGbeStruct8k, GBEREGIONSIZE_8K);
- deblobbedGbeStruct8k.backup.checkSum = gbeGetChecksumFrom4kStruct(deblobbedGbeStruct8k.backup, 0xBABA);
+ deblobbedGbeStruct8k.backup.checkSum = gbeGetChecksumFrom4kStruct(deblobbedGbeStruct8k.backup, GBECHECKSUMTOTAL);
memcpy(&deblobbedGbeStruct8k.main, &deblobbedGbeStruct8k.backup, GBEREGIONSIZE_4K);
return deblobbedGbeStruct8k;
@@ -108,7 +108,7 @@ void printGbeChecksumDataFromStruct4k(struct GBEREGIONRECORD_4K gbeStruct4k, cha
"%s Gbe (%s): calculated Gbe checksum: 0x%hx and actual GBe checksum: 0x%hx\n",
romName,
regionName,
- gbeGetChecksumFrom4kStruct(gbeStruct4k, 0xBABA),
+ gbeGetChecksumFrom4kStruct(gbeStruct4k, GBECHECKSUMTOTAL),
gbeStruct4k.checkSum
);
}
diff --git a/resources/utilities/ich9deblob/gbe/gbe.h b/resources/utilities/ich9deblob/gbe/gbe.h
index 17d6a93..27ad4d7 100644
--- a/resources/utilities/ich9deblob/gbe/gbe.h
+++ b/resources/utilities/ich9deblob/gbe/gbe.h
@@ -43,6 +43,13 @@
*/
#define GBEREGIONSIZE_4K 0x1000
+/*
+ * When adding up the first 0x3F 16-bit words
+ * in a 4KiB GBE region, it should be equal
+ * to 0xBABA
+ */
+#define GBECHECKSUMTOTAL 0xBABA
+
/*
* These will have a modified descriptor+gbe based on what's in the factory.rom
* These will be joined into a single 12KiB buffer (descriptor, then gbe) and saved to a file
@@ -59,7 +66,7 @@
struct GBEREGIONRECORD_4K {
unsigned char macAddress[6]; /* 0x03 words, or 0x06 bytes */
unsigned char otherStuff[120]; /* 0x3c words, or 0x7E bytes */
- unsigned short checkSum; /* when added to the sum of all words above, this should be 0xBABA */
+ unsigned short checkSum; /* when added to the sum of all words above, this should match GBECHECKSUMTOTAL */
unsigned char padding1[3968];
};