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OvmfPkg: Add PCD for Host Bridge dev. ID (PcdOvmfHostBridgePciDevId) 

Set from PEI, this PCD allows subsequent stages (specifically
DXE_DRIVER and DXE_RUNTIME_DRIVER) to infer the underlying platform
type (e.g. PIIX4 or Q35/MCH) without the need to further query the
Host Bridge for its Device ID.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16374 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Gabriel Somlo 2014-11-14 00:37:39 +00:00 committed by jljusten
parent 97380beb15
commit d55004dac9
6 changed files with 7 additions and 1 deletions
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1
OvmfPkg/OvmfPkg.dec
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@ -94,6 +94,7 @@
[PcdsDynamic, PcdsDynamicEx]
gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent|0|UINT64|2
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashVariablesEnable|FALSE|BOOLEAN|0x10
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId|0|UINT16|0x1b
[PcdsFeatureFlag]
gUefiOvmfPkgTokenSpaceGuid.PcdSecureBootEnable|FALSE|BOOLEAN|3

1
OvmfPkg/OvmfPkgIa32.dsc
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@ -330,6 +330,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution|800
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution|600
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId|0
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPlatformBootTimeOut|0

1
OvmfPkg/OvmfPkgIa32X64.dsc
View File

@ -336,6 +336,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution|800
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution|600
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId|0
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPlatformBootTimeOut|0

1
OvmfPkg/OvmfPkgX64.dsc
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@ -335,6 +335,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution|800
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution|600
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId|0
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPlatformBootTimeOut|0

3
OvmfPkg/PlatformPei/Platform.c
View File

@ -245,7 +245,7 @@ MiscInitialization (
BuildCpuHob (36, 16);
//
// Query Host Bridge DID to determine platform type
// Query Host Bridge DID to determine platform type and save to PCD
//
HostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID);
switch (HostBridgeDevId) {
@ -265,6 +265,7 @@ MiscInitialization (
ASSERT (FALSE);
return;
}
PcdSet16 (PcdOvmfHostBridgePciDevId, HostBridgeDevId);
//
// If PMREGMISC/PMIOSE is set, assume the ACPI PMBA has been configured (for

1
OvmfPkg/PlatformPei/PlatformPei.inf
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@ -73,6 +73,7 @@
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfLockBoxStorageBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfLockBoxStorageSize
gUefiOvmfPkgTokenSpaceGuid.PcdGuidedExtractHandlerTableSize
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdS3AcpiReservedMemorySize
gEfiMdePkgTokenSpaceGuid.PcdGuidedExtractHandlerTableAddress
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize