UefiCpuPkg/ResetVector/Vtf0: Move Page Table/CR3 setting to a new file

[mirror_edk2.git] / UefiCpuPkg / ResetVector / Vtf0 / Ia32 / PageTables64.asm

diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm
new file mode 100644 (file)
index 0000000..0cfcbae
--- /dev/null
+++ b/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm
@@ -0,0 +1,30 @@
+;------------------------------------------------------------------------------\r
+; @file\r
+; Sets the CR3 register for 64-bit paging\r
+;\r
+; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>\r
+; This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution.  The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+BITS    32\r
+\r
+;\r
+; Modified:  EAX\r
+;\r
+SetCr3ForPageTables64:\r
+\r
+    ;\r
+    ; These pages are built into the ROM image by Tools/FixupForRawSection.py\r
+    ;\r
+    mov     eax, ((ADDR_OF_START_OF_RESET_CODE & ~0xfff) - 0x1000)\r
+    mov     cr3, eax\r
+\r
+    OneTimeCallRet SetCr3ForPageTables64\r
+\r