From 3b17b2458726bf7e2cf640d29ebe14f8af587905 Mon Sep 17 00:00:00 2001
From: "Ma, Maurice" <maurice.ma@intel.com>
Date: Wed, 29 Apr 2015 03:10:24 +0000
Subject: Add dual FSP binaries support.

There are two FSP images at different locations in a flash (one factory version is read only and other in updatable version)
TempRamInit, FspMemoryInit and TempRamExit are executed from factory version and FspSiliconInit/NotifyPhase will be executed from updatable version.

Also update FSP specification version to v1.1.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Ma, Maurice" <maurice.ma@intel.com>
Reviewed-by: "Yao, Jiewen" <Jiewen.Yao@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17248 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../Library/BaseFspSwitchStackLib/Ia32/Stack.asm   | 24 ++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

(limited to 'IntelFspPkg/Library/BaseFspSwitchStackLib/Ia32/Stack.asm')

diff --git a/IntelFspPkg/Library/BaseFspSwitchStackLib/Ia32/Stack.asm b/IntelFspPkg/Library/BaseFspSwitchStackLib/Ia32/Stack.asm
index d04f229a6b..1efab52059 100644
--- a/IntelFspPkg/Library/BaseFspSwitchStackLib/Ia32/Stack.asm
+++ b/IntelFspPkg/Library/BaseFspSwitchStackLib/Ia32/Stack.asm
@@ -1,6 +1,6 @@
 ;------------------------------------------------------------------------------
 ;
-; Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2014 - 2015, 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
@@ -28,7 +28,8 @@
 ;------------------------------------------------------------------------------
 EXTERNDEF  C   MeasurePoint:PROC
 Pei2LoaderSwitchStack   PROC C PUBLIC
-    jmp     Loader2PeiSwitchStack
+    xor     eax, eax
+    jmp     FspSwitchStack
 Pei2LoaderSwitchStack   ENDP
 
 ;------------------------------------------------------------------------------
@@ -38,10 +39,21 @@ Pei2LoaderSwitchStack   ENDP
 ;   VOID
 ;   )
 ;------------------------------------------------------------------------------
-EXTERNDEF  C   SwapStack:PROC
 Loader2PeiSwitchStack   PROC C PUBLIC
+    jmp     FspSwitchStack
+Loader2PeiSwitchStack   ENDP
+
+;------------------------------------------------------------------------------
+; UINT32
+; EFIAPI
+; FspSwitchStack (
+;   VOID
+;   )
+;------------------------------------------------------------------------------
+EXTERNDEF  C   SwapStack:PROC
+FspSwitchStack   PROC C PUBLIC
     ; Save current contexts
-    push    offset exit
+    push    eax
     pushfd
     cli
     pushad
@@ -58,8 +70,8 @@ Loader2PeiSwitchStack   PROC C PUBLIC
     add     esp, 8
     popad
     popfd
-exit:
+    add     esp, 4
     ret
-Loader2PeiSwitchStack   ENDP
+FspSwitchStack   ENDP
 
     END
-- 
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