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Diffstat (limited to 'pc-bios/optionrom')
-rwxr-xr-xpc-bios/optionrom/signrom.sh5
1 files changed, 3 insertions, 2 deletions
diff --git a/pc-bios/optionrom/signrom.sh b/pc-bios/optionrom/signrom.sh
index 263ba5ffc..432281137 100755
--- a/pc-bios/optionrom/signrom.sh
+++ b/pc-bios/optionrom/signrom.sh
@@ -31,9 +31,10 @@ x=`dd if="$1" bs=1 count=1 skip=2 2>/dev/null | od -t u1 -A n`
size=$(( $x * 512 - 1 ))
# now get the checksum
-for i in `od -A n -t u1 -v "$1"`; do
+nums=`od -A n -t u1 -v "$1"`
+for i in ${nums}; do
# add each byte's value to sum
- sum=$(( $sum + $i ))
+ sum=`expr $sum + $i`
done
sum=$(( $sum % 256 ))