In order to properly enable multisegment RB, we need
to grab ecam data from the FDT for each bridge.
Current UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGES struct from
MdeModulePkg does not include definition for ecam. In
order to maintain backward compatibility and also avoid
diverging too much from core, we are going to define a
new HOB for UPL segment information and pass it to
GetPciSegmentInfo function. Ths function then grabs specifically
ecam info from the segment hob along with other rb specific
information to create final RB info required by multi segment
PCI driver.
Additionally we would like to support legacy implementations which
rely on ACPIBoard HOB to fill up segment info. So if UplSegmentInfo Hob
is not found we try and look for other hob.
Signed-off-by: Dhaval Sharma <dhaval@rivosinc.com>
Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
The library PciSegmentInfoLibAcpiBoardInfo consumes the Guid gUefiAcpiBoardInfoGuid.
Reviewed-by: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
Today's UefiPayloadPkg always uses 0xE0000000 as the PCIE base address
and ignores the value set in AcpiBoardInfo HOB created by the boot
loader. This makes the payload binary cannot work in environment
where the PCIE base address set by boot loader doesn't equal to
0xE0000000.
The patch enhances UefiPayloadPkg so that the PCIE base address
set by boot loader in the AcpiBoardInfo HOB is used.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Maurice Ma <maurice.ma@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Dhaval
Liu, Zhiguang
Ray Ni