EmulatorPkg: Add persistent memory in EmuThunkPpi

The persistent memory is for PEIM to use, and won't lose during cold
or warm reset. PcdPersistentMemorySize is only used by WinHost.c,
other modules can check the persistent memory size using the field
PersistentMemorySize.

Cc: Andrew Fish <afish@apple.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/EmulatorPkg/Unix/Host/Host.c b/EmulatorPkg/Unix/Host/Host.c
index 38c01c84af..8d0be5b54b 100644
--- a/EmulatorPkg/Unix/Host/Host.c
+++ b/EmulatorPkg/Unix/Host/Host.c
@@ -1,6 +1,6 @@
 /*++ @file

 

-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2022, Intel Corporation. All rights reserved.<BR>

 Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR>

 SPDX-License-Identifier: BSD-2-Clause-Patent

 

@@ -102,6 +102,7 @@ main (
   CHAR16                *FirmwareVolumesStr;

   UINTN                 *StackPointer;

   FILE                  *GdbTempFile;

+  EMU_THUNK_PPI         *SecEmuThunkPpi;

 

   //

   // Xcode does not support sourcing gdb scripts directly, so the Xcode XML

@@ -137,7 +138,15 @@ main (
   //

   // PPIs pased into PEI_CORE

   //

-  AddThunkPpi (EFI_PEI_PPI_DESCRIPTOR_PPI, &gEmuThunkPpiGuid, &mSecEmuThunkPpi);

+  SecEmuThunkPpi = AllocateZeroPool (sizeof (EMU_THUNK_PPI) + FixedPcdGet32 (PcdPersistentMemorySize));

+  if (SecEmuThunkPpi == NULL) {

+    printf ("ERROR : Can not allocate memory for SecEmuThunkPpi.  Exiting.\n");

+    exit (1);

+  }

+

+  CopyMem (SecEmuThunkPpi, &mSecEmuThunkPpi, sizeof (EMU_THUNK_PPI));

+  SecEmuThunkPpi->PersistentMemorySize = FixedPcdGet32 (PcdPersistentMemorySize);

+  AddThunkPpi (EFI_PEI_PPI_DESCRIPTOR_PPI, &gEmuThunkPpiGuid, SecEmuThunkPpi);

 

   SecInitThunkProtocol ();