diff options
| author | David Woodhouse <dwmw2@infradead.org> | 2019-06-26 12:37:42 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2019-06-26 15:06:44 +0200 |
| commit | c7341877f69505e69acd199c84b6c09218058bfa (patch) | |
| tree | 512f65fe68565905eb137ed3f17ccc209c95cfae /OvmfPkg/OvmfPkgIa32X64.dsc | |
| parent | 4b04d9d73604080a42daf737c39b98d4e1245a51 (diff) | |
| download | edk2-c7341877f69505e69acd199c84b6c09218058bfa.tar.gz edk2-c7341877f69505e69acd199c84b6c09218058bfa.tar.bz2 edk2-c7341877f69505e69acd199c84b6c09218058bfa.zip | |
OvmfPkg: don't assign PCI BARs above 4GiB when CSM enabled
Mostly, this is only necessary for devices that the CSM might have
native support for, such as VirtIO and NVMe; PciBusDxe will already
degrade devices to 32-bit if they have an OpROM.
However, there doesn't seem to be a generic way of requesting PciBusDxe
to downgrade specific devices.
There's IncompatiblePciDeviceSupportProtocol but that doesn't provide
the PCI class information or a handle to the device itself, so there's
no simple way to just match on all NVMe devices, for example.
Just leave gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size set to zero for
CSM builds, until/unless that can be fixed.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190626113742.819933-5-dwmw2@infradead.org>
Diffstat (limited to 'OvmfPkg/OvmfPkgIa32X64.dsc')
| -rw-r--r-- | OvmfPkg/OvmfPkgIa32X64.dsc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc index 639e33cb28..ad20531ceb 100644 --- a/OvmfPkg/OvmfPkgIa32X64.dsc +++ b/OvmfPkg/OvmfPkgIa32X64.dsc @@ -543,7 +543,11 @@ gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Base|0x0
+!ifdef $(CSM_ENABLE)
+ gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size|0x0
+!else
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size|0x800000000
+!endif
gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|0
|