UefiCpuPkg: Add CPU Features PEI/DXE drivers

[mirror_edk2.git] / UefiCpuPkg / CpuFeatures / CpuFeaturesPei.c

diff --git a/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c b/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c
new file mode 100644 (file)
index 0000000..6292f5b
--- /dev/null
+++ b/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c
@@ -0,0 +1,75 @@
+/** @file
+  CPU Features PEIM driver to initialize CPU features.
+
+  Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <PiPei.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/RegisterCpuFeaturesLib.h>
+
+#include <Guid/CpuFeaturesInitDone.h>
+
+EFI_PEI_PPI_DESCRIPTOR           mPeiCpuFeaturesInitDonePpiDesc = {
+  (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+  &gEdkiiCpuFeaturesInitDoneGuid,
+  NULL
+};
+
+/**
+  CPU Features driver entry point function.
+
+  It will perform CPU features initialization, except for
+  PcdCpuFeaturesInitOnS3Resume is FALSE on S3 resume.
+
+  @param  FileHandle    Handle of the file being invoked.
+  @param  PeiServices   Describes the list of possible PEI Services.
+
+  @retval EFI_SUCCESS   CPU Features is initialized successfully.
+**/
+EFI_STATUS
+EFIAPI
+CpuFeaturesPeimInitialize (
+  IN       EFI_PEI_FILE_HANDLE  FileHandle,
+  IN CONST EFI_PEI_SERVICES     **PeiServices
+  )
+{
+  EFI_STATUS                 Status;
+  EFI_BOOT_MODE              BootMode;
+
+  Status = PeiServicesGetBootMode (&BootMode);
+  ASSERT_EFI_ERROR (Status);
+
+  if (BootMode == BOOT_ON_S3_RESUME &&
+      !PcdGetBool (PcdCpuFeaturesInitOnS3Resume)) {
+    //
+    // Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE
+    // on S3 boot mode
+    //
+    return EFI_SUCCESS;
+  }
+
+  CpuFeaturesDetect ();
+
+  CpuFeaturesInitialize ();
+
+  //
+  // Install CPU Features Init Done PPI
+  //
+  Status = PeiServicesInstallPpi(&mPeiCpuFeaturesInitDonePpiDesc);
+  ASSERT_EFI_ERROR (Status);
+
+  return EFI_SUCCESS;
+}
+