diff options
| author | Hao Wu <hao.a.wu@intel.com> | 2019-04-02 15:28:50 +0800 |
|---|---|---|
| committer | Hao Wu <hao.a.wu@intel.com> | 2019-04-11 08:57:27 +0800 |
| commit | 460ffed242af83000945f69f75e381426c172ac8 (patch) | |
| tree | c960b75278dfd261794fa8265a1109980a1bf2b2 /OvmfPkg/OvmfPkg.dec | |
| parent | 10fa47e538290bb22ff5de39bedcce1dd92d488f (diff) | |
| download | edk2-460ffed242af83000945f69f75e381426c172ac8.tar.gz edk2-460ffed242af83000945f69f75e381426c172ac8.tar.bz2 edk2-460ffed242af83000945f69f75e381426c172ac8.zip | |
OvmfPkg/OvmfPkg.dec: Add 8259-related PCDs in OVMF DEC file
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1496
According to the DEC file in PcAtChipsetPkg, this commit adds the two
8259-driver-related PCDs into the OvmfPkg DEC file.
Please note that, instead of adding the two PCDs under section:
[PcdsFixedAtBuild, PcdsDynamic, PcdsDynamicEx, PcdsPatchableInModule]
as in PcAtChipsetPkg.dec file, they are added in section:
[PcdsFixedAtBuild]
in OvmfPkg.dec instead.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'OvmfPkg/OvmfPkg.dec')
| -rw-r--r-- | OvmfPkg/OvmfPkg.dec | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec index d59508db56..cc2a4909af 100644 --- a/OvmfPkg/OvmfPkg.dec +++ b/OvmfPkg/OvmfPkg.dec @@ -122,6 +122,32 @@ gUefiOvmfPkgTokenSpaceGuid.PcdGuidedExtractHandlerTableSize|0x0|UINT32|0x1a
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfDecompressionScratchEnd|0x0|UINT32|0x1f
+ ## Pcd8259LegacyModeMask defines the default mask value for platform. This
+ # value is determined.
+ # 1) If platform only support pure UEFI, value should be set to 0xFFFF or
+ # 0xFFFE; Because only clock interrupt is allowed in legacy mode in pure
+ # UEFI platform.
+ # 2) If platform install CSM and use thunk module:
+ # a) If thunk call provided by CSM binary requires some legacy interrupt
+ # support, the corresponding bit should be opened as 0.
+ # For example, if keyboard interfaces provided CSM binary use legacy
+ # keyboard interrupt in 8259 bit 1, then the value should be set to
+ # 0xFFFC.
+ # b) If all thunk call provied by CSM binary do not require legacy
+ # interrupt support, value should be set to 0xFFFF or 0xFFFE.
+ #
+ # The default value of legacy mode mask could be changed by
+ # EFI_LEGACY_8259_PROTOCOL->SetMask(). But it is rarely need change it
+ # except some special cases such as when initializing the CSM binary, it
+ # should be set to 0xFFFF to mask all legacy interrupt. Please restore the
+ # original legacy mask value if changing is made for these special case.
+ gUefiOvmfPkgTokenSpaceGuid.Pcd8259LegacyModeMask|0xFFFF|UINT16|0x3
+
+ ## Pcd8259LegacyModeEdgeLevel defines the default edge level for legacy
+ # mode's interrrupt controller.
+ # For the corresponding bits, 0 = Edge triggered and 1 = Level triggered.
+ gUefiOvmfPkgTokenSpaceGuid.Pcd8259LegacyModeEdgeLevel|0x0000|UINT16|0x5
+
[PcdsDynamic, PcdsDynamicEx]
gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent|0|UINT64|2
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashVariablesEnable|FALSE|BOOLEAN|0x10
|