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xen_pv_protocol.patch
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xen_pv_protocol.patch
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Index: OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.h
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.h (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.h (revision 0)
@@ -0,0 +1,92 @@
+/** @file
+
+Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+
+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.
+
+**/
+
+#ifndef _PARA_VIRTUALIZATION_H_
+#define _PARA_VIRTUALIZATION_H_
+
+#include <PiDxe.h>
+
+#include <Protocol/Hypercall.h>
+#include <Guid/XenInfo.h>
+#include <Library/HobLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/XenLib.h>
+
+#include <Library/BaseLib.h>
+
+#include "GasketHypercall.h"
+
+/**
+ Get Xen Hypercall page from HOB.
+
+**/
+VOID*
+GetHypercallPage (
+ VOID
+ );
+
+/**
+ Xen Hypercall
+
+**/
+
+/**
+ Xen Hypercall
+
+ @param Cmd parameter.
+ @param Arg Parameter.
+
+**/
+EFI_STATUS
+EFIAPI
+HypervisorXenVersion (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ );
+
+EFI_STATUS
+EFIAPI
+HypervisorGrantTableOp(
+ IN UINTN Cmd,
+ IN VOID *Uop,
+ IN UINTN Count
+);
+
+EFI_STATUS
+EFIAPI
+HypervisorSchedOp (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ );
+
+EFI_STATUS
+EFIAPI
+HypervisorEventChannelOp (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ );
+
+EFI_STATUS
+EFIAPI
+HypervisorHvmOp (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ );
+
+
+
+#endif
+
Index: OvmfPkg/ParaVirtualizationDxe/X64/GasketHypercall.asm
===================================================================
Index: OvmfPkg/ParaVirtualizationDxe/X64/GasketHypercall.S
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/X64/GasketHypercall.S (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/X64/GasketHypercall.S (revision 0)
@@ -0,0 +1,93 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+#
+# 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.
+#
+# Module Name:
+#
+# GasketHypercall.S
+#
+# Abstract:
+#
+# Hypercall function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+# UINTN
+# EFIAPI
+# Hypercall (
+# IN VOID *HypercallPageAddress, // passed in %rcx
+# IN UINTN HypercallOffset, // passed in %rdx
+# IN UINTN Arg1, // passed in %r8
+# IN UINTN Arg2, // passed in %r9
+# IN UINTN Arg3, // passed in stack
+# IN UINTN Arg4, // passed in stack
+# IN UINTN Arg5, // passed in stack
+# )
+#------------------------------------------------------------------------------
+
+ .text
+
+ASM_GLOBAL ASM_PFX(Hypercall)
+ASM_PFX(Hypercall):
+ pushq %rbp // stack frame is for the debugger
+ movq %rsp, %rbp
+ subq $16, %rsp // Allocate space for args on the stack
+
+ pushq %rsi // %rsi & %rdi are callee-save in EFI ABI
+ pushq %rdi
+
+ movq %rcx, %rax // Swizzle args
+ addq %rdx, %rax // Address of hypercall is in %rax
+
+ movq %r8, %rdi // Move parameters into %rdi,
+ movq %r9, %rsi // %rsi,
+ movq 48(%rbp), %rdx // %rdx,
+ movq 56(%rbp), %r10 // %r10,
+ movq 64(%rbp), %r8 // %r8
+ movq %r8, (%rsp) //
+
+ call *%rax
+ addq $16, %rsp
+
+ popq %rdi // restore state
+ popq %rsi
+ popq %rbp
+ ret // return value is in %rax
+
+
+//
+// Hypercall2 is not used.
+//
+ASM_GLOBAL ASM_PFX(Hypercall2)
+ASM_PFX(Hypercall2):
+ pushq %rbp // stack frame is for the debugger
+ movq %rsp, %rbp
+
+ pushq %rsi // %rsi & %rdi are callee-save in EFI ABI
+ pushq %rdi
+
+ movq %rcx, %rax // Swizzle args
+ addq %rdx, %rax // Address of hypercall is in %rax
+
+ movq %r8, %rdi // Move parameters into %rdi, %rsi
+ movq %r9, %rsi
+
+ call *%rax
+
+ popq %rdi // restore state
+ popq %rsi
+ popq %rbp
+ ret // return value is in %rax
+
+
Index: OvmfPkg/ParaVirtualizationDxe/Hypercall.c
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/Hypercall.c (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/Hypercall.c (revision 0)
@@ -0,0 +1,112 @@
+/**@file
+ This file holds all the needed Xen Hypercalls.
+
+ Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+
+ 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.
+
+**/
+
+#include "ParaVirtualizationDxe.h"
+
+/**
+ This method passes the hypercall parameters and hypercall number to UNIX ABI function, as well as the address of hypercall page.
+
+ @param HypercallNum The Number of the hypercall.
+ @param Arg1-Arg5 Parameters for the hypercall.
+
+**/
+EFI_STATUS
+EFIAPI
+Hypercall2Abi (
+ IN UINTN HypercallNum,
+ IN UINTN Arg1,
+ IN UINTN Arg2,
+ IN UINTN Arg3,
+ IN UINTN Arg4,
+ IN UINTN Arg5
+ )
+{
+ VOID *HypercallPages;
+
+ HypercallPages = GetHypercallPage ();
+ if (HypercallPages == NULL) {
+ return 0;
+ }
+
+ //
+ // All the hypercall just call one function.
+ //
+ return Hypercall (HypercallPages, HypercallNum * 32, Arg1, Arg2, Arg3, Arg4, Arg5);
+}
+
+/**
+ Xen Hypercall. All the hypercalls call one function.
+
+ @param Cmd parameter.
+ @param Arg Parameter.
+
+**/
+EFI_STATUS
+EFIAPI
+HypervisorXenVersion (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ )
+{
+ return Hypercall2Abi (HYPERVISOR_XEN_VERSION, (UINTN) Cmd, (UINTN) Arg, 0, 0, 0);
+}
+
+EFI_STATUS
+EFIAPI
+HypervisorGrantTableOp(
+ IN UINTN Cmd,
+ IN VOID *Uop,
+ IN UINTN Count
+)
+{
+ return Hypercall2Abi (HYPERVISOR_GRANT_TABLE_OP, (UINTN) Cmd, (UINTN) Uop, Count, 0, 0);
+}
+
+EFI_STATUS
+EFIAPI
+HypervisorSchedOp (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ )
+{
+ return Hypercall2Abi(HYPERVISOR_SCHED_OP, (UINTN) Cmd, (UINTN) Arg, 0, 0, 0);
+}
+
+EFI_STATUS
+EFIAPI
+HypervisorEventChannelOp (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ )
+{
+ return Hypercall2Abi(HYPERVISOR_EVENT_CHANNEL_OP, (UINTN) Cmd, (UINTN) Arg, 0, 0, 0);
+}
+
+EFI_STATUS
+EFIAPI
+HypervisorHvmOp (
+ IN UINTN Cmd,
+ IN VOID *Arg
+ )
+{
+ return Hypercall2Abi (HYPERVISOR_HVM_OP, (UINTN) Cmd, (UINTN) Arg, 0, 0, 0);
+}
+
+
+/*
+ Add more hypercall here
+
+**/
+
Index: OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.inf
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.inf (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.inf (revision 0)
@@ -0,0 +1,65 @@
+## @file
+# Component description file for Xen ParaVirtualization driver module.
+#
+# Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+#
+# 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.
+#
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ParaVirtualizationDxe
+ FILE_GUID = 0a5baf88-b6ec-4338-b1a7-f1496f605359
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = XenPvDriverEntryPoint
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources]
+ GasketHypercall.h
+ ParaVirtualizationDxe.h
+ ParaVirtualizationDxe.c
+ Hypercall.c
+
+[Sources.X64]
+ X64/GasketHypercall.S # convert between Emu x86_64 ABI and EFI X64 ABI
+
+[Sources.IA32]
+ Ia32/GasketHypercall.S #
+
+
+[Packages]
+ MdePkg/MdePkg.dec
+ OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ UefiBootServicesTableLib
+ DebugLib
+ HobLib
+
+ BaseLib
+
+[Protocols]
+ gEfiXenHvProtocolGuid ## PRODUCED
+
+[Guids]
+ gEfiXenInfoGuid # PROTOCOL ALWAYS_CONSUMED
+
+[FixedPcd]
+
+[Depex]
+ TRUE
Index: OvmfPkg/ParaVirtualizationDxe/GasketHypercall.h
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/GasketHypercall.h (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/GasketHypercall.h (revision 0)
@@ -0,0 +1,44 @@
+/** @file
+
+ Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+
+ 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.
+
+**/
+
+#ifndef _GASKET_HYPERCALL_H_
+#define _GASKET_HYPERCALL_H_
+
+UINTN
+EFIAPI
+Hypercall (
+ IN VOID *HypercallPageAddress, // Address of hypercall page
+ IN UINTN HypercallOffset, // Hypercall Offset ( = hypercall num * 32)
+ IN UINTN Arg1, // parameters
+ IN UINTN Arg2, //
+ IN UINTN Arg3, //
+ IN UINTN Arg4, //
+ IN UINTN Arg5 //
+ );
+
+
+//
+// Hypercall2 is not used!
+//
+UINTN
+EFIAPI
+Hypercall2 (
+ IN VOID *HypercallPageAddress, // Address of hypercall page
+ IN UINTN HypercallOffset, // Hypercall Offset ( = hypercall num * 32)
+ IN UINTN Arg1, // parameters
+ IN UINTN Arg2 //
+ );
+
+#endif
+
Index: OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.c
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.c (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/ParaVirtualizationDxe.c (revision 0)
@@ -0,0 +1,224 @@
+/** @file
+
+Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+
+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.
+
+**/
+
+#include "ParaVirtualizationDxe.h"
+
+//
+// Module Global:
+//
+EFI_HANDLE mXenHypercallHandle = NULL;
+EFI_XEN_HV_PROTOCOL mXenHypercallProtocol;
+
+
+/**
+
+ Get Xen Hypercall page from HOB.
+
+**/
+VOID*
+GetHypercallPage (
+ VOID
+ )
+{
+ EFI_PEI_HOB_POINTERS GuidHob;
+ EFI_XEN_INFO *mXenInfo;
+
+ GuidHob.Raw = GetFirstGuidHob (&gEfiXenInfoGuid);
+ if (GuidHob.Raw != NULL) {
+ mXenInfo = GET_GUID_HOB_DATA (GuidHob.Guid);
+ if (mXenInfo != NULL) {
+ return (VOID *) (UINTN) mXenInfo->HyperPages;
+ }
+ }
+
+ DEBUG ((EFI_D_ERROR, "Gasket_Fail to get Xen info from hob\n"));
+ return NULL;
+}
+
+
+/**
+ Print String (For Hypercall test)
+**/
+INTN
+EFIAPI
+PrintAsciiStr (
+ IN CONST CHAR8 *FirstString,
+ IN UINTN Length
+ )
+{
+ ASSERT (AsciiStrSize (FirstString));
+
+ while ((*FirstString != '\0') && (Length > 0)) {
+ DEBUG ((EFI_D_INFO, "%c", *FirstString));
+ FirstString++;
+ Length--;
+ }
+
+ DEBUG ((EFI_D_INFO, "\n"));
+ return EFI_SUCCESS;
+}
+
+/**
+
+ Test of calling hypercall in OVMF
+
+**/
+VOID
+TestHypercall (
+ VOID
+ )
+{
+ UINT32 Major, Minor;
+ XenExtraversion ExtraVersion;
+
+ //hypercall simple test
+ Major = 0; Minor = 0;
+ Minor = mXenHypercallProtocol.HypervisorXenVersion(XENVER_VERSION, 0);
+ Major = Minor >> 16;
+ Minor &= 0xFFFF;
+ DEBUG ((EFI_D_INFO, "[TestInfo_CallHypercallInsideXenPvDXE]OVMF is running on Xen version: %d.%d\n", Major, Minor));
+
+ //test2
+ mXenHypercallProtocol.HypervisorXenVersion(XENVER_EXTRAVERSION, ExtraVersion);
+ DEBUG ((EFI_D_INFO, "[TestInfo_CallHypercallInsideXenPvDXE]Detected Xen "));
+ PrintAsciiStr(ExtraVersion, 16);
+}
+
+/**
+
+ Initialize the methods of EFI_XEN_HV_PROTOCOL;
+
+ @param XenProtocolInstance Points to the EFI_XEN_HV_PROTOCOL instance.
+
+**/
+EFI_STATUS
+EFIAPI
+ProtocolInitialize (
+ IN OUT EFI_XEN_HV_PROTOCOL *XenProtocolInstance
+ )
+{
+ //
+ // Check for invalid input parameters
+ //
+ ASSERT (XenProtocolInstance);
+
+ //
+ // Initialize the protocol methods
+ //
+ XenProtocolInstance->HypervisorSetTrapTable = NULL;
+ XenProtocolInstance->HypervisorMmuUpdate = NULL;
+ XenProtocolInstance->HypervisorSetGdt = NULL;
+ XenProtocolInstance->HypervisorStackSwitch = NULL;
+ XenProtocolInstance->HypervisorSetCallbacks = NULL;
+ XenProtocolInstance->HypervisorFpuTaskswitch = NULL;
+ XenProtocolInstance->HypervisorSchedOpCompat = NULL;
+ XenProtocolInstance->HypervisorPlatformOp = NULL;
+ XenProtocolInstance->HypervisorSetDebugreg = NULL;
+ XenProtocolInstance->HypervisorGetDebugreg = NULL;
+ XenProtocolInstance->HypervisorUpdateDescriptor = NULL;
+ XenProtocolInstance->HypervisorMemoryOp = NULL;
+ XenProtocolInstance->HypervisorMulticall = NULL;
+ XenProtocolInstance->HypervisorUpdateVaMapping = NULL;
+ XenProtocolInstance->HypervisorSetTimerOp = NULL;
+ XenProtocolInstance->HypervisorEventChannelOpCompat = NULL;
+ XenProtocolInstance->HypervisorXenVersion = HypervisorXenVersion;
+ XenProtocolInstance->HypervisorConsoleIo = NULL;
+ XenProtocolInstance->HypervisorPhysdevOpCompat = NULL;
+ XenProtocolInstance->HypervisorGrantTableOp = HypervisorGrantTableOp;
+ XenProtocolInstance->HypervisorVmAssist = NULL;
+ XenProtocolInstance->HypervisorUpdateVaMappingOtherdomain = NULL;
+ XenProtocolInstance->HypervisorIret = NULL;
+ XenProtocolInstance->HypervisorVcpuOp = NULL;
+ XenProtocolInstance->HypervisorSetSegmentBase = NULL;
+ XenProtocolInstance->HypervisorMmuextOp = NULL;
+ XenProtocolInstance->HypervisorXsmOp = NULL;
+ XenProtocolInstance->HypervisorNmiOp = NULL;
+ XenProtocolInstance->HypervisorSchedOp = HypervisorSchedOp;
+ XenProtocolInstance->HypervisorCallbackOp = NULL;
+ XenProtocolInstance->HypervisorXenoprofOp = NULL;
+ XenProtocolInstance->HypervisorEventChannelOp = HypervisorEventChannelOp;
+ XenProtocolInstance->HypervisorPhysdevOp = NULL;
+ XenProtocolInstance->HypervisorHvmOp = HypervisorHvmOp;
+ XenProtocolInstance->HypervisorSysctl = NULL;
+ XenProtocolInstance->HypervisorDomctl = NULL;
+ XenProtocolInstance->HypervisorKexecOp = NULL;
+ XenProtocolInstance->HypervisorTmemOp = NULL;
+
+ XenProtocolInstance->HypervisorArch0 = NULL;
+ XenProtocolInstance->HypervisorArch1 = NULL;
+ XenProtocolInstance->HypervisorArch2 = NULL;
+ XenProtocolInstance->HypervisorArch3 = NULL;
+ XenProtocolInstance->HypervisorArch4 = NULL;
+ XenProtocolInstance->HypervisorArch5 = NULL;
+ XenProtocolInstance->HypervisorArch6 = NULL;
+ XenProtocolInstance->HypervisorArch7 = NULL;
+
+ //
+ // Initialize other info in protocol
+ // TODO: Set the version info
+ //
+ XenProtocolInstance->MajorVersion = 0;
+ XenProtocolInstance->MinorVersion = 0;
+
+ return EFI_SUCCESS;
+}
+
+/**
+
+ Driver to produce EFI_XEN_HV_PROTOCOL protocol.
+
+ @param ImageHandle Module's image handle
+ @param SystemTable Pointer of EFI_SYSTEM_TABLE
+
+ @retval EFI_SUCCESS Smbios protocol installed
+ @retval Other No protocol installed, unload driver.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvDriverEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Make sure the Xen ParaVirtualization Protocol has not been installed in the system yet.
+ //
+ ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiXenHvProtocolGuid);
+
+ //
+ // Initialize protocol
+ //
+ ProtocolInitialize(&mXenHypercallProtocol);
+
+ //
+ // Test inside Xen PV driver Dxe
+ //
+ TestHypercall();
+
+ //
+ // Make a new handle and install the protocol
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &mXenHypercallHandle,
+ &gEfiXenHvProtocolGuid, &mXenHypercallProtocol,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
+
Index: OvmfPkg/ParaVirtualizationDxe/Ia32/GasketHypercall.asm
===================================================================
Index: OvmfPkg/ParaVirtualizationDxe/Ia32/GasketHypercall.S
===================================================================
--- OvmfPkg/ParaVirtualizationDxe/Ia32/GasketHypercall.S (revision 0)
+++ OvmfPkg/ParaVirtualizationDxe/Ia32/GasketHypercall.S (revision 0)
@@ -0,0 +1,96 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+#
+# 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.
+#
+# Module Name:
+#
+# GasketHypercall.S
+#
+# Abstract:
+#
+# Hypercall function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+# UINTN
+# EFIAPI
+# Hypercall (
+# IN VOID *HypercallPageAddress, // passed in stack 8(%ebp)
+# IN UINTN HypercallOffset, // passed in stack 12(%ebp)
+# IN UINTN Arg1, // passed in stack 16(%ebp)
+# IN UINTN Arg2, // passed in stack 20(%ebp)
+# IN UINTN Arg3, // passed in stack 24(%ebp)
+# IN UINTN Arg4, // passed in stack 28(%ebp)
+# IN UINTN Arg5, // passed in stack 32(%ebp)
+# )
+#------------------------------------------------------------------------------
+
+ .text
+
+ASM_GLOBAL ASM_PFX(Hypercall)
+ASM_PFX(Hypercall):
+ pushl %ebp
+ movl %esp, %ebp
+
+ pushl %ebx
+ pushl %ecx
+ pushl %edx
+ pushl %esi
+ pushl %edi
+
+ movl 8(%ebp), %eax // Address of hypercall page
+ addl 12(%ebp), %eax // Address of hypercall is in %rax
+
+ movl 32(%ebp), %edi // Swizzle args
+ movl 28(%ebp), %esi
+ movl 24(%ebp), %edx
+ movl 20(%ebp), %ecx
+ movl 16(%ebp), %ebx
+
+ call *%eax
+
+ popl %edi
+ popl %esi
+ popl %edx
+ popl %ecx
+ popl %ebx
+
+ movl %ebp, %esp
+ popl %ebp
+ ret
+
+
+//
+// Hypercall2 is not used.
+//
+ASM_GLOBAL ASM_PFX(Hypercall2)
+ASM_PFX(Hypercall2):
+ pushl %ebp
+ movl %esp, %ebp
+
+ pushl %ecx
+
+ movl 8(%ebp), %eax // Address of hypercall page
+ addl 12(%ebp), %eax // Address of hypercall is in %rax
+
+ movl 20(%ebp), %ecx // Swizzle args
+ movl 16(%ebp), %ebx
+
+ call *%eax
+
+ popl %ecx
+ movl %ebp, %esp
+ popl %ebp
+ ret
+
Index: OvmfPkg/Include/Library/XenLib.h
===================================================================
--- OvmfPkg/Include/Library/XenLib.h (revision 0)
+++ OvmfPkg/Include/Library/XenLib.h (revision 0)
@@ -0,0 +1,37 @@
+/** @file
+
+ XEN_HV_PROTOCOL protocol allows consumers to log SMBIOS data records, and enables the producer
+ to create the SMBIOS tables for a platform.
+
+ Copyright (c) 2006 - 2008, 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.
+
+**/
+
+#ifndef _XEN_LIB_H_
+#define _XEN_LIB_H_
+
+
+/*
+* For Xen Version Hypercall
+*/
+#define XENVER_VERSION 0
+/* arg == xen_extraversion_t. */
+#define XENVER_EXTRAVERSION 1
+typedef CHAR8 XenExtraversion[16];
+
+
+
+
+
+
+
+
+#endif
+
Index: OvmfPkg/Include/Protocol/Hypercall.h
===================================================================
--- OvmfPkg/Include/Protocol/Hypercall.h (revision 0)
+++ OvmfPkg/Include/Protocol/Hypercall.h (revision 0)
@@ -0,0 +1,436 @@
+/** @file
+
+ XEN_HV_PROTOCOL protocol allows consumers to log SMBIOS data records, and enables the producer
+ to create the SMBIOS tables for a platform.
+
+ Copyright (c) 2006 - 2008, 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.
+
+**/
+
+#ifndef _XEN_HV_PROTOCOL_H_
+#define _XEN_HV_PROTOCOL_H_
+
+#define EFI_XEN_HV_PROTOCOL_GUID \
+ { 0x90d9933f, 0x0f3f, 0x4027, { 0xaa, 0x7c, 0x05, 0x44, 0xb6, 0x62, 0x38, 0x5f }}
+
+//
+// HYPERCALLS
+//
+#define HYPERVISOR_SET_TRAP_TABLE 0
+#define HYPERVISOR_MMU_UPDATE 1
+#define HYPERVISOR_SET_GDT 2
+#define HYPERVISOR_STACK_SWITCH 3
+#define HYPERVISOR_SET_CALLBACKS 4
+#define HYPERVISOR_FPU_TASKSWITCH 5
+#define HYPERVISOR_SCHED_OP_COMPAT 6 /* compat since 0x00030101 */
+#define HYPERVISOR_PLATFORM_OP 7
+#define HYPERVISOR_SET_DEBUGREG 8
+#define HYPERVISOR_GET_DEBUGREG 9
+#define HYPERVISOR_UPDATE_DESCRIPTOR 10
+#define HYPERVISOR_MEMORY_OP 12
+#define HYPERVISOR_MULTICALL 13
+#define HYPERVISOR_UPDATE_VA_MAPPING 14
+#define HYPERVISOR_SET_TIMER_OP 15
+#define HYPERVISOR_EVENT_CHANNEL_OP_COMPAT 16 /* compat since 0x00030202 */
+#define HYPERVISOR_XEN_VERSION 17
+#define HYPERVISOR_CONSOLE_IO 18
+#define HYPERVISOR_PHYSDEV_OP_COMPAT 19 /* compat since 0x00030202 */
+#define HYPERVISOR_GRANT_TABLE_OP 20
+#define HYPERVISOR_VM_ASSIST 21
+#define HYPERVISOR_UPDATE_VA_MAPPING_OTHERDOMAIN 22
+#define HYPERVISOR_IRET 23 /* x86 only */
+#define HYPERVISOR_VCPU_OP 24
+#define HYPERVISOR_SET_SEGMENT_BASE 25 /* x86/64 only */
+#define HYPERVISOR_MMUEXT_OP 26
+#define HYPERVISOR_XSM_OP 27
+#define HYPERVISOR_NMI_OP 28
+#define HYPERVISOR_SCHED_OP 29
+#define HYPERVISOR_CALLBACK_OP 30
+#define HYPERVISOR_XENOPROF_OP 31
+#define HYPERVISOR_EVENT_CHANNEL_OP 32
+#define HYPERVISOR_PHYSDEV_OP 33
+#define HYPERVISOR_HVM_OP 34
+#define HYPERVISOR_SYSCTL 35
+#define HYPERVISOR_DOMCTL 36
+#define HYPERVISOR_KEXEC_OP 37
+#define HYPERVISOR_TMEM_OP 38
+
+/* Architecture-specific hypercall definitions. */
+#define HYPERVISOR_ARCH_0 48
+#define HYPERVISOR_ARCH_1 49
+#define HYPERVISOR_ARCH_2 50
+#define HYPERVISOR_ARCH_3 51
+#define HYPERVISOR_ARCH_4 52
+#define HYPERVISOR_ARCH_5 53
+#define HYPERVISOR_ARCH_6 54
+#define HYPERVISOR_ARCH_7 55
+
+typedef struct _EFI_XEN_HV_PROTOCOL EFI_XEN_HV_PROTOCOL;
+
+/**
+ Hypercall methods.
+
+ @param[in] TODO parameters description
+ @param[in] TODO parameters description
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_SET_TRAP_TABLE)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_MMU_UPDATE )(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_SET_GDT)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_STACK_SWITCH)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_SET_CALLBACKS)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_FPU_TASKSWITCH)(
+ IN UINTN Cmd
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_SCHED_OP_COMPAT)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_PLATFORM_OP)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_SET_DEBUGREG)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_GET_DEBUGREG)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_UPDATE_DESCRIPTOR)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_MEMORY_OP)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_MULTICALL)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_UPDATE_VA_MAPPING)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_SET_TIMER_OP)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_EVENT_CHANNEL_OP_COMPAT)(
+ //TODO Add parameters
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_HYPERVISOR_XEN_VERSION)(
+ IN UINTN Cmd,
+ IN VOID *Arg
+);
+
+typedef
+EFI_STATUS