The ACPI code may reserve the first entry for a certain table
(might be FACS) to help with OS compatible issues.
We need to skip the NULL table entry in RSDT/XSDT.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu...@intel.com>
Cc: Sean Brogan <sean.bro...@microsoft.com>
---
PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
index 2bb41e7..35e34b7 100644
--- a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -1230,6 +1230,11 @@ ScanTableInSDT (
//
Table = 0;
CopyMem (&Table, (VOID *) (EntryBase + Index * TablePointerSize),
TablePointerSize);
+
+ if (Table == NULL) {
+ continue;
+ }
+
if (Table->Signature == Signature) {
return Table;
}
--
2.9.0.windows.1
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