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MdeModulePkg/AhciPei: Fix MMIO base assignment

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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4041

There is a mistake in getting MMIO base using PciDevicePpi that
can lead to the data corruption.

Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Maciej Czajkowski <maciej.czajkowski@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
This commit is contained in:
Czajkowski, Maciej 2022-09-10 02:10:55 +08:00 committed by mergify[bot]
parent 838c730fe6
commit 1dccbd1a38
1 changed files with 4 additions and 2 deletions
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6
MdeModulePkg/Bus/Ata/AhciPei/AhciPei.c
View File

@ -405,7 +405,7 @@ AtaAhciInitPrivateDataFromPciDevice (
{
EFI_STATUS Status;
PCI_TYPE00 PciData;
UINTN MmioBase;
UINT32 MmioBase;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
UINTN DevicePathLength;
UINT64 EnabledPciAttributes;
@ -454,13 +454,15 @@ AtaAhciInitPrivateDataFromPciDevice (
&PciDevice->PciIo,
EfiPciIoWidthUint32,
0x24,
sizeof (UINTN),
1,
&MmioBase
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
MmioBase &= 0xFFFFFFF0;
DevicePathLength = GetDevicePathSize (PciDevice->DevicePath);
DevicePath = PciDevice->DevicePath;