PeiCryptLib.c

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#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
#include <Ppi/Crypto.h>
 
VOID *
GetCryptoServices (
  VOID
  )
{
  EFI_STATUS        Status;
  EDKII_CRYPTO_PPI  *CryptoPpi;
  UINTN             Version;
 
  CryptoPpi = NULL;
  Status    = PeiServicesLocatePpi (
                &gEdkiiCryptoPpiGuid,
                0,
                NULL,
                (VOID **)&CryptoPpi
                );
  if (EFI_ERROR (Status) || (CryptoPpi == NULL)) {
    DEBUG ((DEBUG_ERROR, "[PeiCryptLib] Failed to locate Crypto PPI. Status = %r\n", Status));
    ASSERT_EFI_ERROR (Status);
    ASSERT (CryptoPpi != NULL);
    return NULL;
  }
 
  Version = CryptoPpi->GetVersion ();
  if (Version < EDKII_CRYPTO_VERSION) {
    DEBUG ((DEBUG_ERROR, "[PeiCryptLib] Crypto PPI unsupported version %d\n", Version));
    ASSERT (Version >= EDKII_CRYPTO_VERSION);
    return NULL;
  }
 
  return (VOID *)CryptoPpi;
}