1 files changed, 76 insertions, 0 deletions
diff --git a/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm b/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm
new file mode 100644
index 0000000000..c48a95694c
--- /dev/null
+++ b/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm
@@ -0,0 +1,76 @@
+;; @file
+;  Provide FSP API entry points.
+;
+; Copyright (c) 2016, 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
+; 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.
+;;
+
+    SECTION .text
+
+;
+; Following functions will be provided in C
+;
+extern ASM_PFX(Loader2PeiSwitchStack)
+extern ASM_PFX(FspApiCallingCheck)
+
+;
+; Following functions will be provided in ASM
+;
+extern ASM_PFX(FspApiCommonContinue)
+extern ASM_PFX(AsmGetFspInfoHeader)
+
+;----------------------------------------------------------------------------
+; FspApiCommon API
+;
+; This is the FSP API common entry point to resume the FSP execution
+;
+;----------------------------------------------------------------------------
+global ASM_PFX(FspApiCommon)
+ASM_PFX(FspApiCommon):
+  ;
+  ; EAX holds the API index
+  ;
+
+  ;
+  ; Stack must be ready
+  ;
+  push   eax
+  add    esp, 4
+  cmp    eax, dword  [esp - 4]
+  jz     FspApiCommon1
+  mov    eax, 080000003h
+  jmp    exit
+
+FspApiCommon1:
+  ;
+  ; Verify the calling condition
+  ;
+  pushad
+  push   DWORD [esp + (4 * 8 + 4)]  ; push ApiParam
+  push   eax                ; push ApiIdx
+  call   ASM_PFX(FspApiCallingCheck)
+  add    esp, 8
+  cmp    eax, 0
+  jz     FspApiCommon2
+  mov    dword  [esp + (4 * 7)], eax
+  popad
+exit:
+  ret
+
+FspApiCommon2:
+  popad
+  cmp    eax, 3   ; FspMemoryInit API
+  jz     FspApiCommon3
+
+  call   ASM_PFX(AsmGetFspInfoHeader)
+  jmp    ASM_PFX(Loader2PeiSwitchStack)
+
+FspApiCommon3:
+  jmp    ASM_PFX(FspApiCommonContinue)
+