1 files changed, 66 insertions, 0 deletions
diff --git a/Core/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.S b/Core/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.S
new file mode 100644
index 0000000000..21516d5ad9
--- /dev/null
+++ b/Core/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.S
@@ -0,0 +1,66 @@
+## @file
+#
+# Copyright (c) 2010, 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.
+#
+##
+
+#-----------------------------------------
+#VOID
+#AsmTransferControl (
+#  IN   UINT32           S3WakingVector,
+#  IN   UINT32           AcpiLowMemoryBase
+#  );
+#-----------------------------------------
+
+ASM_GLOBAL ASM_PFX(AsmTransferControl)
+ASM_PFX(AsmTransferControl):
+    # S3WakingVector    :DWORD
+    # AcpiLowMemoryBase :DWORD
+    pushl %ebp
+    movl  %esp,%ebp
+    leal  LABLE, %eax
+    pushl $0x28             # CS
+    pushl %eax
+    movl  8(%ebp),%ecx
+    shrdl $20,%ecx,%ebx
+    andl  $0xf,%ecx
+    movw  %cx,%bx
+    movl  %ebx, jmp_addr
+    lret
+LABLE: 
+    .byte 0xb8,0x30,0       # mov ax, 30h as selector
+    movw  %ax,%ds
+    movw  %ax,%es
+    movw  %ax,%fs
+    movw  %ax,%gs
+    movw  %ax,%ss
+    movl  %cr0, %eax        # Get control register 0  
+    .byte 0x66
+    .byte 0x83,0xe0,0xfe    # and    eax, 0fffffffeh  ; Clear PE bit (bit #0)
+    .byte 0xf,0x22,0xc0     # mov    cr0, eax         ; Activate real mode
+    .byte 0xea              # jmp far @jmp_addr
+jmp_addr: 
+    .long    0
+
+ASM_GLOBAL ASM_PFX(AsmTransferControl32)
+ASM_PFX(AsmTransferControl32):
+    jmp ASM_PFX(AsmTransferControl)
+
+# dummy
+ASM_GLOBAL ASM_PFX(AsmTransferControl16)
+ASM_PFX(AsmTransferControl16):
+ASM_GLOBAL ASM_PFX(AsmFixAddress16)
+ASM_PFX(AsmFixAddress16):
+    .long    0
+ASM_GLOBAL ASM_PFX(AsmJmpAddr32)
+ASM_PFX(AsmJmpAddr32):
+    .long    0
+