CpuCacheInfoLib.h

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#ifndef _CPU_CACHE_INFO_LIB_H_
#define _CPU_CACHE_INFO_LIB_H_
 
typedef struct {
  //
  // Package number.
  //
  UINT32    Package;
  //
  // Core type of logical processor.
  // Value = CPUID.1Ah:EAX[31:24]
  //
  UINT8     CoreType;
  //
  // Level of the cache that this package's this type of logical processor corresponds to.
  // Value = CPUID.04h:EAX[07:05]
  //
  UINT8     CacheLevel            : 3;
  //
  // Type of the cache that this package's this type of logical processor corresponds to.
  // Value = CPUID.04h:EAX[04:00]
  //
  UINT8     CacheType             : 5;
  //
  // Ways of associativity.
  // Value = CPUID.04h:EBX[31:22]
  //
  UINT16    CacheWays             : 10;
  //
  // Fully associative cache.
  // Value = CPUID.04h:EAX[09]
  //
  UINT16    FullyAssociativeCache : 1;
  //
  // Direct mapped cache.
  // Value = CPUID.04h:EDX[02]
  //
  UINT16    DirectMappedCache     : 1;
  UINT16    Reserved              : 4;
  //
  // Size of single cache that this package's this type of logical processor corresponds to.
  // Value = (CPUID.04h:EBX[31:22] + 1) * (CPUID.04h:EBX[21:12] + 1) *
  //         (CPUID.04h:EBX[11:00] + 1) * (CPUID.04h:ECX[31:00] + 1)
  //
  UINT32    CacheSizeinKB;
  //
  // Number of the cache that this package's this type of logical processor corresponds to.
  // Have subtracted the number of caches that are shared.
  //
  UINT16    CacheCount;
} CPU_CACHE_INFO;
 
EFI_STATUS
EFIAPI
GetCpuCacheInfo (
  IN OUT CPU_CACHE_INFO  *CpuCacheInfo,
  IN OUT UINTN           *CpuCacheInfoCount
  );
 
#endif