1 files changed, 103 insertions, 0 deletions
diff --git a/roms/edk2/EmulatorPkg/AutoScanPei/AutoScanPei.c b/roms/edk2/EmulatorPkg/AutoScanPei/AutoScanPei.c
new file mode 100644
index 000000000..c5e190a93
--- /dev/null
+++ b/roms/edk2/EmulatorPkg/AutoScanPei/AutoScanPei.c
@@ -0,0 +1,103 @@
+/*++ @file
+
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+Portions copyright (c) 2011, Apple Inc. All rights reserved.
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "PiPei.h"
+#include <Ppi/EmuThunk.h>
+#include <Ppi/MemoryDiscovered.h>
+
+#include <Library/DebugLib.h>
+#include <Library/PeimEntryPoint.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/HobLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PeiServicesTablePointerLib.h>
+
+EFI_STATUS
+EFIAPI
+PeimInitializeAutoScanPei (
+  IN       EFI_PEI_FILE_HANDLE       FileHandle,
+  IN CONST EFI_PEI_SERVICES          **PeiServices
+  )
+/*++
+
+Routine Description:
+  Perform a call-back into the SEC simulator to get a memory value
+
+Arguments:
+  FfsHeader   - General purpose data available to every PEIM
+  PeiServices - General purpose services available to every PEIM.
+
+Returns:
+  None
+
+**/
+{
+  EFI_STATUS                  Status;
+  EFI_PEI_PPI_DESCRIPTOR      *PpiDescriptor;
+  EMU_THUNK_PPI               *Thunk;
+  UINT64                      MemorySize;
+  EFI_PHYSICAL_ADDRESS        MemoryBase;
+  UINTN                       Index;
+  EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
+
+
+  DEBUG ((EFI_D_ERROR, "Emu Autoscan PEIM Loaded\n"));
+
+  //
+  // Get the PEI UNIX Autoscan PPI
+  //
+  Status = PeiServicesLocatePpi (
+             &gEmuThunkPpiGuid,      // GUID
+             0,                      // INSTANCE
+             &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
+             (VOID **)&Thunk         // PPI
+             );
+  ASSERT_EFI_ERROR (Status);
+
+  Index = 0;
+  do {
+    Status = Thunk->MemoryAutoScan (Index, &MemoryBase, &MemorySize);
+    if (!EFI_ERROR (Status)) {
+      Attributes =
+        (
+          EFI_RESOURCE_ATTRIBUTE_PRESENT |
+          EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
+          EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
+          EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
+          EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
+          EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
+        );
+
+      if (Index == 0) {
+        //
+        // Register the memory with the PEI Core
+        //
+        Status = PeiServicesInstallPeiMemory (MemoryBase, MemorySize);
+        ASSERT_EFI_ERROR (Status);
+
+        Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
+      }
+
+      BuildResourceDescriptorHob (
+        EFI_RESOURCE_SYSTEM_MEMORY,
+        Attributes,
+        MemoryBase,
+        MemorySize
+        );
+    }
+    Index++;
+  } while (!EFI_ERROR (Status));
+
+  //
+  // Build the CPU hob with 57-bit addressing and 16-bits of IO space.
+  //
+  BuildCpuHob (57, 16);
+
+  return Status;
+}