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EnableGop: Improve ROM overflow detection in vBIOS insert script

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This commit is contained in:
Mike Beaton 2023-02-28 09:51:05 +00:00
parent 01db6a0a23
commit 86ef0dc2e8
1 changed files with 10 additions and 4 deletions
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14
Staging/EnableGop/vBiosInsert.sh
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@ -137,6 +137,7 @@ if [ "$AMD" -eq 1 ] ; then
dd bs=1 if="$ROM_FILE" of="$tmpdir/keep_part.rom" skip=$(($AMD_SAFE_SIZE)) 2>/dev/null || exit 1
else
cp "$ROM_FILE" "$tmpdir/modify_part.rom" || exit 1
echo -n > "$tmpdir/keep_part.rom" || exit 1
fi
if [ "$GOP_OFFSET" = "-" ] ; then
@ -218,11 +219,16 @@ fi
if [ "$TRUNCATE" -eq 1 ] ; then
dd bs=1 if="$tmpdir/combined.rom" of="$tmpdir/truncated.rom" count="$TRUNCATE_SIZE" 2>/dev/null || exit 1
ERROR=0
hexdump -v -e '1/8 " %016X\n"' "$tmpdir/truncated.rom" | tail | grep -q "FFFFFFFFFFFFFFFF" || ERROR=1
COUNT=$(hexdump -v -e '1/8 " %016X\n"' "temp/truncated.rom" | tail -n 8 | grep "FFFFFFFFFFFFFFFF" | wc -l)
if [ "$COUNT" -ne 8 ] ; then
# Some Nvidia ROMs, at least, incorrectly have 00000000 padding after active contents
# (it is incorrect, since writing only active contents using nvflash resets the rest to ffffffff).
# May also be relevant if we ever have any truly 00000000 default ROM images.
COUNT=$(hexdump -v -e '1/8 " %016X\n"' "temp/truncated.rom" | tail -n 8 | grep "0000000000000000" | wc -l)
fi
if [ "$ERROR" -eq 1 ] ; then
echo " - Not enough space within AMD $((TRUNCATE_SIZE / 1024))k limit - aborting!" && exit 1
if [ "$COUNT" -ne 8 ] ; then
echo " - Not enough space within $((TRUNCATE_SIZE / 1024))k limit - aborting!" && exit 1
fi
cat "$tmpdir/truncated.rom" "$tmpdir/keep_part.rom" > "$OUT_FILE" || exit 1