Files
system76-edk2/OvmfPkg/XenResetVector/XenResetVector.nasmb
Anthony PERARD c05de360ec OvmfPkg: Introduce XenResetVector
Introduce XenResetVector, a copy of OvmfPkg/ResetVector, with one
changes:
  - SEC_DEFAULT_CR0: enable cache (bit 30 or CD set to 0)

Xen copies the OVMF code to RAM, there is no need to disable cache.

This new module will later be modified to add a new entry point, more
detail in a following commit "OvmfPkg/XenResetVector: Add new entry point
for Xen PVH"

Value FILE_GUID of XenResetVector have not changed compare to ResetVector
because it is a special value (gEfiFirmwareVolumeTopFileGuid).

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190813113119.14804-4-anthony.perard@citrix.com>
2019-08-21 18:03:49 +02:00

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;------------------------------------------------------------------------------
; @file
; This file includes all other code files to assemble the reset vector code
;
; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2019, Citrix Systems, Inc.
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
;------------------------------------------------------------------------------
;
; If neither ARCH_IA32 nor ARCH_X64 are defined, then try to include
; Base.h to use the C pre-processor to determine the architecture.
;
%ifndef ARCH_IA32
%ifndef ARCH_X64
#include <Base.h>
#if defined (MDE_CPU_IA32)
%define ARCH_IA32
#elif defined (MDE_CPU_X64)
%define ARCH_X64
#endif
%endif
%endif
%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_PORT80
%include "Port80Debug.asm"
%elifdef DEBUG_SERIAL
%include "SerialDebug.asm"
%else
%include "DebugDisabled.asm"
%endif
%include "Ia32/SearchForBfvBase.asm"
%include "Ia32/SearchForSecEntry.asm"
%ifdef ARCH_X64
#include <AutoGen.h>
%if (FixedPcdGet32 (PcdOvmfSecPageTablesSize) != 0x6000)
%error "This implementation inherently depends on PcdOvmfSecPageTablesSize"
%endif
%define PT_ADDR(Offset) (FixedPcdGet32 (PcdOvmfSecPageTablesBase) + (Offset))
%include "Ia32/Flat32ToFlat64.asm"
%include "Ia32/PageTables64.asm"
%endif
%include "Ia16/Real16ToFlat32.asm"
%include "Ia16/Init16.asm"
%include "Main.asm"
%include "Ia16/ResetVectorVtf0.asm"