Current implementation only supports legacy region of 440 chip.
When QEMU is launched in Q35 mode using CSM enabled OVMF image,
LegacyBios driver fails to start due to the legacy region
[0xC0000, 0xFFFFF] cannot be written.
v2:
* just updates the comments.
v3:
* uses PcdOvmfHostBridgePciDevId as Jordan suggested.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Justen Jordan <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
SVN r16375 (git commit 72a11001, "OvmfPkg: CsmSupportLib: Set/use platform
specific legacy interrupt device") added the
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
PCD to CsmSupportLib. Since that "namespace" GUID is declared in
OvmfPkg/OvmfPkg.dec, and we've not used anything from OvmfPkg/OvmfPkg.dec
in CsmSupportLib.inf thus far, this is a new [Packages] dependency and
must be named.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16414 6f19259b-4bc3-4df7-8a09-765794883524
Use a PCD set from PEI to determine the legacy interrupt device
number appropriate for the underlying platform type during protocol
initialization.
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@16375 6f19259b-4bc3-4df7-8a09-765794883524
Note: The CSM16 binary must be copied into the tree at
OvmfPkg/Csm/Csm16/Csm16.bin in order to use CSM_ENABLE.
If CSM_ENABLE is set during the build, then the CSM16 binary
and the CSM support (Legacy BIOS) drivers will be added to
the build.
Signed-off-by: jljusten
Reviewed-by: geekboy15a
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12682 6f19259b-4bc3-4df7-8a09-765794883524
This library installs the legacy interrupt, region
and platform support required for CSM support
drivers.
Signed-off-by: jljusten
Reviewed-by: geekboy15a
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12681 6f19259b-4bc3-4df7-8a09-765794883524
Ruiyu Ni
Laszlo Ersek
Gabriel Somlo
jljusten