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-rw-r--r--OvmfPkg/Include/IndustryStandard/QemuFwCfg.h1
-rw-r--r--OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c6
-rw-r--r--OvmfPkg/SmmControl2Dxe/SmiFeatures.c2
3 files changed, 5 insertions, 4 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h b/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
index 776bfe88ae..5da6b456fe 100644
--- a/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
+++ b/OvmfPkg/Include/IndustryStandard/QemuFwCfg.h
@@ -47,6 +47,7 @@
// platforms (Ia32 and X64).
//
#define FW_CFG_IO_SELECTOR 0x510
+#define FW_CFG_IO_DATA 0x511
//
// Numerically defined keys.
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
index 1387ea85f3..d79d0a444c 100644
--- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
+++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
@@ -135,7 +135,7 @@ InternalQemuFwCfgReadBytes (
InternalQemuFwCfgDmaBytes ((UINT32)Size, Buffer, FW_CFG_DMA_CTL_READ);
return;
}
- IoReadFifo8 (0x511, Size, Buffer);
+ IoReadFifo8 (FW_CFG_IO_DATA, Size, Buffer);
}
@@ -187,7 +187,7 @@ QemuFwCfgWriteBytes (
InternalQemuFwCfgDmaBytes ((UINT32)Size, Buffer, FW_CFG_DMA_CTL_WRITE);
return;
}
- IoWriteFifo8 (0x511, Size, Buffer);
+ IoWriteFifo8 (FW_CFG_IO_DATA, Size, Buffer);
}
}
@@ -230,7 +230,7 @@ QemuFwCfgSkipBytes (
//
while (Size > 0) {
ChunkSize = MIN (Size, sizeof SkipBuffer);
- IoReadFifo8 (0x511, ChunkSize, SkipBuffer);
+ IoReadFifo8 (FW_CFG_IO_DATA, ChunkSize, SkipBuffer);
Size -= ChunkSize;
}
}
diff --git a/OvmfPkg/SmmControl2Dxe/SmiFeatures.c b/OvmfPkg/SmmControl2Dxe/SmiFeatures.c
index 352ffa0173..73c29848b3 100644
--- a/OvmfPkg/SmmControl2Dxe/SmiFeatures.c
+++ b/OvmfPkg/SmmControl2Dxe/SmiFeatures.c
@@ -303,7 +303,7 @@ SaveSmiFeatures (
S3SaveState, // This
EFI_BOOT_SCRIPT_IO_POLL_OPCODE, // OpCode
EfiBootScriptWidthUint8, // Width
- (UINT64)(UINTN)0x511, // Address
+ (UINT64)(UINTN)FW_CFG_IO_DATA, // Address
&FeaturesOkData, // Data
&FeaturesOkMask, // DataMask
MAX_UINT64 // Delay