build: fix bug: images for i945 ROM's were not dd'd

For X60/X60T/T60

An optimization was made earlier to reduce the number of steps
taken but it was found that the ROM images did not contain
identical data in the top two 64K regions of the image.

This would have bricked the users machine if the followed the
correct instructions, even. This patch fixed the issue.

1 files changed, 14 insertions, 0 deletions

diff --git a/build b/build
index 142d920..c5cf371 100755
--- a/build
+++ b/build
@@ -57,6 +57,20 @@ do
 	./buildrom-withgrub $board
 done
 
+# Needed on i945 systems for the bucts/dd trick (documented)
+# This enables the ROM to be flashed over the lenovo bios firmware
+for i945board in x60 x60t t60
+do
+	cd bin/"$i945board"/
+	for i945rom in $(ls)
+	do
+		dd if="$i945rom" of=top64k.bin bs=1 skip=$[$(stat -c %s "$i945rom") - 0x10000] count=64k
+		dd if=top64k.bin of="$i945rom" bs=1 seek=$[$(stat -c %s "$i945rom") - 0x20000] count=64k conv=notrunc
+		rm -f top64k.bin
+	done
+	cd ../../
+done
+
 # The GRUB payloads are no longer needed
 rm -f coreboot/grub_vesafb.elf
 rm -f coreboot/grub_txtmode.elf