diff options
| -rw-r--r-- | MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c b/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c index cd55272c96..7bd04661d0 100644 --- a/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c +++ b/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c @@ -3,6 +3,7 @@ mode at PEI phase.
Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -92,6 +93,15 @@ AhciPassThruExecute ( {
EFI_STATUS Status;
+ if (PortMultiplierPort == 0xFFFF) {
+ //
+ // If there is no port multiplier, PortMultiplierPort will be 0xFFFF
+ // according to UEFI spec. Here, we convert its value to 0 to follow
+ // AHCI spec.
+ //
+ PortMultiplierPort = 0;
+ }
+
switch (Packet->Protocol) {
case EFI_ATA_PASS_THRU_PROTOCOL_ATA_NON_DATA:
Status = AhciNonDataTransfer (
|