diff options
| author | Jordan Justen <jordan.l.justen@intel.com> | 2013-09-24 18:23:20 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-09-24 18:23:20 +0000 |
| commit | c90e37b503d4e79dbebbd49f9bfc3c6c14ffb67d (patch) | |
| tree | 10d35aaf20f624bd410bef20f3869ed6bfd8a70a /OvmfPkg/ResetVector/ResetVectorCode.asm | |
| parent | a63f2e245099ac9ab17046322ab6e13f84bb053c (diff) | |
| download | edk2-platforms-c90e37b503d4e79dbebbd49f9bfc3c6c14ffb67d.tar.xz | |
OvmfPkg: Add platform specific reset vector code for X64
KVM has a bug that prevents using page tables in the ROM if the ROM
region utilizes the KVM READONLY memory feature. Therefore, we
avoid using page tables stored in the ROM.
Since OVMF doesn't require memory initialization, we just build
page table entries in RAM at 0x80000 very early in the OVMF boot
process. This address is just after the 'temp RAM' which is set
up by the SEC module.
Currently we only set up 4GB of page tables for OVMF's PEI,
but DxeIpl will build identity mapped page tables that cover all
of the available processor physical address space.
Reported-by: Gary Ching-Pang Lin <glin@suse.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14715 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/ResetVector/ResetVectorCode.asm')
| -rw-r--r-- | OvmfPkg/ResetVector/ResetVectorCode.asm | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/OvmfPkg/ResetVector/ResetVectorCode.asm b/OvmfPkg/ResetVector/ResetVectorCode.asm new file mode 100644 index 0000000000..052c821f21 --- /dev/null +++ b/OvmfPkg/ResetVector/ResetVectorCode.asm @@ -0,0 +1,53 @@ +;------------------------------------------------------------------------------
+; @file
+; This file includes all other code files to assemble the reset vector code
+;
+; 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.
+;
+;------------------------------------------------------------------------------
+
+%ifdef ARCH_IA32
+ %ifdef ARCH_X64
+ %error "Only one of ARCH_IA32 or ARCH_X64 can be defined."
+ %endif
+%elifdef ARCH_X64
+%else
+ %error "Either ARCH_IA32 or ARCH_X64 must be defined."
+%endif
+
+%include "CommonMacros.inc"
+
+%include "PostCodes.inc"
+
+%ifdef DEBUG_NONE
+ %include "DebugDisabled.asm"
+%elifdef DEBUG_PORT80
+ %include "Port80Debug.asm"
+%elifdef DEBUG_SERIAL
+ %include "SerialDebug.asm"
+%else
+ %error "No debug type was specified."
+%endif
+
+%include "Ia32/SearchForBfvBase.asm"
+%include "Ia32/SearchForSecEntry.asm"
+
+%ifdef ARCH_X64
+%include "Ia32/Flat32ToFlat64.asm"
+%include "Ia32/PageTables64.asm"
+%endif
+
+%include "Ia16/Real16ToFlat32.asm"
+%include "Ia16/Init16.asm"
+
+%include "Main.asm"
+
+%include "Ia16/ResetVectorVtf0.asm"
+
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