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how to modify EDKII MRC parameters(PCD)? #162

Open naiyining opened 3 years ago

naiyining commented 3 years ago

To All: I want to change MinnowTurbot board'Memory down TOTAL-size 2G to 4G, so I modify EDKII MRC parameters(PCD), and rebuild the bios. but It doesn't work, as if it hadn't been compiled.

My problem is how to modify EDKII MRC parameters(PCD)? or, I must use the FSP to do this work?

thanks!

\edk2-platforms\Silicon\Intel\Vlv2DeviceRefCodePkg\Vlv2DeviceRefCodePkg.dec line:187 gVlvRefCodePkgTokenSpaceGuid.PcdMemoryParameterPatchable|TRUE|BOOLEAN|0x20000010 gVlvRefCodePkgTokenSpaceGuid.PcdDimmDensity|3|UINT8|0x20000006

\edk2-platforms\Platform\Intel\Vlv2TbltDevicePkg\PlatformPkgIA32.dsc line:569 gVlvRefCodePkgTokenSpaceGuid.PcdMemoryParameterPatchable|TRUE gVlvRefCodePkgTokenSpaceGuid.PcdDimmDensity|2

I want to change PcdDimmDensity|3

\edk2-non-osi\Silicon\Intel\Vlv2SocBinPkg\IA32RELEASE\IA32\MemoryInit.inf line:66 gVlvRefCodePkgTokenSpaceGuid.PcdMemoryParameterPatchable|0x01|0x1693C gVlvRefCodePkgTokenSpaceGuid.PcdDimmDensity|0x02|0x124E5

I want to change PcdDimmDensity|0x03|0x124E5