ubuntu20.04 init

hc

2024-03-25 edb30157bad0c0001c32b854271ace01d3b9a16a

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/** @file 
  Source code file for Report CPU HOB library. 
 
Copyright (c) 2021, Intel Corporation. All rights reserved.<BR> 
SPDX-License-Identifier: BSD-2-Clause-Patent 
 
**/ 
 
#include <PiPei.h> 
#include <Library/BaseLib.h> 
#include <Library/HobLib.h> 
#include <Register/Intel/Cpuid.h> 
 
 
/** 
  Build a HOB for the CPU. 
**/ 
VOID 
EFIAPI 
ReportCpuHob ( 
  VOID 
  ) 
{ 
  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.Bits.PhysicalAddressBits; 
  } else { 
    PhysicalAddressBits = 36; 
  } 
 
  /// 
  /// Create a CPU hand-off information 
  /// 
  BuildCpuHob (PhysicalAddressBits, 16); 
}