From 379e5098a4836b21b893b4801baa34b570c24599 Mon Sep 17 00:00:00 2001
From: Chasel Chiu <chasel.chiu@intel.com>
Date: Tue, 5 Jan 2021 16:55:25 +0800
Subject: IntelFsp2Pkg: Support FSP private temporary memory.

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3153

In FSP the temporary memory provided by bootloader typically will be
totally given to PeiCore as Heap, but in some cases FSP may have to
reserve some more temporary memory for private usage.

This commit adds this flexibility for FSP to reserve some
temporary memory before giving them to PeiCore.

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
---
 IntelFsp2Pkg/IntelFsp2Pkg.dec | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'IntelFsp2Pkg/IntelFsp2Pkg.dec')

diff --git a/IntelFsp2Pkg/IntelFsp2Pkg.dec b/IntelFsp2Pkg/IntelFsp2Pkg.dec
index 60d40ab6b9..ec7b9a7702 100644
--- a/IntelFsp2Pkg/IntelFsp2Pkg.dec
+++ b/IntelFsp2Pkg/IntelFsp2Pkg.dec
@@ -1,7 +1,7 @@
 ## @file
 # Provides driver and definitions to build fsp in EDKII bios.
 #
-# Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2014 - 2021, Intel Corporation. All rights reserved.<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
 ##
@@ -98,6 +98,11 @@
   # Maximal Interrupt supported in IDT table.
   #
   gIntelFsp2PkgTokenSpaceGuid.PcdFspMaxInterruptSupported |        34| UINT8|0x10000005
+  #
+  # Allows FSP-M to reserve a section of Temporary RAM for implementation specific use.
+  # Reduces the amount of memory available for the PeiCore heap.
+  #
+  gIntelFsp2PkgTokenSpaceGuid.PcdFspPrivateTemporaryRamSize |0x00000000|UINT32|0x10000006
 
 [PcdsFixedAtBuild,PcdsDynamic,PcdsDynamicEx]
   gIntelFsp2PkgTokenSpaceGuid.PcdFspReservedMemoryLength |0x00100000|UINT32|0x46530000
-- 
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