X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=UefiCpuPkg%2FResetVector%2FVtf0%2FIa32%2FPageTables64.asm;fp=UefiCpuPkg%2FResetVector%2FVtf0%2FIa32%2FPageTables64.asm;h=0cfcbae87b5d1e2c0b4cf761a6b6e38155f9e229;hp=0000000000000000000000000000000000000000;hb=a63f2e245099ac9ab17046322ab6e13f84bb053c;hpb=cd5a40bd98ab3298b87af4baa247cbaeeff4cb1e

diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm
new file mode 100644
index 0000000000..0cfcbae87b
--- /dev/null
+++ b/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm
@@ -0,0 +1,30 @@
+;------------------------------------------------------------------------------
+; @file
+; Sets the CR3 register for 64-bit paging
+;
+; Copyright (c) 2008 - 2013, 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.
+;
+;------------------------------------------------------------------------------
+
+BITS    32
+
+;
+; Modified:  EAX
+;
+SetCr3ForPageTables64:
+
+    ;
+    ; These pages are built into the ROM image by Tools/FixupForRawSection.py
+    ;
+    mov     eax, ((ADDR_OF_START_OF_RESET_CODE & ~0xfff) - 0x1000)
+    mov     cr3, eax
+
+    OneTimeCallRet SetCr3ForPageTables64
+