[edk2-devel][PATCH v4 1/7] IntelSiliconPkg/ReportCpuHobLib: Add ReportCpuHobLib

Ni, Ray ray.ni at intel.com
Thu May 6 10:09:44 UTC 2021


> +/**
> 
> +  Function for Report CPU HOB library
> +  This library report the CPU HOB with Physical Address bits.

1. "Build a HOB for the CPU."
> 
> +  UINT8                           PhysicalAddressBits;
> 
> +  CPUID_VIR_PHY_ADDRESS_SIZE_EAX  AddressSizeEax;
> 
> +
> 
> +  AsmCpuid (CPUID_VIR_PHY_ADDRESS_SIZE, &AddressSizeEax.Uint32, NULL, NULL, NULL);
> 
> +  if (AddressSizeEax.Uint32 >= CPUID_VIR_PHY_ADDRESS_SIZE) {
> 
> +    AsmCpuid (CPUID_VIR_PHY_ADDRESS_SIZE, &AddressSizeEax.Uint32, NULL, NULL, NULL);
> 
> +    PhysicalAddressBits = (UINT8) AddressSizeEax.Uint32;

2. PhysicalAddressBits = (UINT8) AddressSizeEax.Bits.PhysicalAddressBits



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#74789): https://edk2.groups.io/g/devel/message/74789
Mute This Topic: https://groups.io/mt/82571357/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-






More information about the edk2-devel-archive mailing list