1 files changed, 93 insertions, 0 deletions
diff --git a/Platform/Intel/MinPlatformPkg/Services/StallServicePei/StallServicePei.c b/Platform/Intel/MinPlatformPkg/Services/StallServicePei/StallServicePei.c
new file mode 100644
index 0000000000..8b0f5027b4
--- /dev/null
+++ b/Platform/Intel/MinPlatformPkg/Services/StallServicePei/StallServicePei.c
@@ -0,0 +1,93 @@
+/** @file
+
+Copyright (c) 2018, 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 that 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 <Ppi/Stall.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PeimEntryPoint.h>
+#include <Library/TimerLib.h>
+#include <Library/PeiServicesLib.h>
+
+#define PEI_STALL_RESOLUTION   1
+
+/**
+  The Stall() function provides a blocking stall for at least the number
+  of microseconds stipulated in the final argument of the API.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table
+                         published by the PEI Foundation.
+  @param  This           Pointer to the local data for the interface.
+  @param  Microseconds   Number of microseconds for which to stall.
+
+  @retval EFI_SUCCESS    The service provided at least the required delay.
+
+**/
+EFI_STATUS
+EFIAPI
+Stall (
+  IN CONST EFI_PEI_SERVICES   **PeiServices,
+  IN CONST EFI_PEI_STALL_PPI  *This,
+  IN UINTN                    Microseconds
+  );
+
+EFI_PEI_STALL_PPI mStallPpi = {
+  PEI_STALL_RESOLUTION,
+  Stall
+};
+
+EFI_PEI_PPI_DESCRIPTOR  mPeiInstallStallPpi = {
+  (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+  &gEfiPeiStallPpiGuid,
+  &mStallPpi
+};
+
+EFI_STATUS
+EFIAPI
+Stall (
+  IN CONST EFI_PEI_SERVICES   **PeiServices,
+  IN CONST EFI_PEI_STALL_PPI  *This,
+  IN UINTN                    Microseconds
+  )
+{
+  MicroSecondDelay (Microseconds);
+
+  return EFI_SUCCESS;
+}
+
+/**
+  This function will install the EFI_PEI_STALL_PPI.
+
+  @param  FileHandle            Handle of the file being invoked.
+  @param  PeiServices           Pointer to PEI Services table.
+
+  @retval EFI_SUCCESS           The EFI_PEI_STALL_PPI was installed successfully.
+  @retval EFI_INVALID_PARAMETER The PpiList pointer is NULL.
+  @retval EFI_INVALID_PARAMETER The PEI PPI descriptor in the list does not have the
+                                EFI_PEI_PPI_DESCRIPTOR_PPI bit set in the Flags field.
+  @retval EFI_OUT_OF_RESOURCES  There is no additional space in the PPI database.
+
+**/
+EFI_STATUS
+EFIAPI
+StallServiceEntryPoint (
+  IN       EFI_PEI_FILE_HANDLE  FileHandle,
+  IN CONST EFI_PEI_SERVICES     **PeiServices
+  )
+{
+  EFI_STATUS   Status;
+
+  Status = PeiServicesInstallPpi (&mPeiInstallStallPpi);
+  ASSERT_EFI_ERROR (Status);
+
+  return Status;
+}