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| author | Czajkowski, Maciej <maciej.czajkowski@intel.com> | 2022-09-10 02:10:55 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-09-15 04:17:07 +0000 |
| commit | 1dccbd1a382aa57719e4e0432b3bd6a03a888507 (patch) | |
| tree | 66e10cdfb6a30f174205850cb7b69bab5b13c464 /MdeModulePkg | |
| parent | 838c730fe61578847823da1b815e4c9c5ee1bed4 (diff) | |
| download | edk2-1dccbd1a382aa57719e4e0432b3bd6a03a888507.tar.gz edk2-1dccbd1a382aa57719e4e0432b3bd6a03a888507.tar.bz2 edk2-1dccbd1a382aa57719e4e0432b3bd6a03a888507.zip | |
MdeModulePkg/AhciPei: Fix MMIO base assignment
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>
Diffstat (limited to 'MdeModulePkg')
| -rw-r--r-- | MdeModulePkg/Bus/Ata/AhciPei/AhciPei.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.c b/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.c index 98dd732a40..e33d863d2a 100644 --- a/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.c +++ b/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.c @@ -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;
|