mirror of https://github.com/acidanthera/audk.git
OvmfPkg/PlatformPei: Add Xen support
* Make PlatformPei aware of Xen * Fix assigned PIO and MMIO ranges to be compatible with Xen * Reserve Xen HVM address range * Publish XenInfo HOB * Don't program PIIX4 PMBA for Xen Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Reviewed-by: gavinguan Signed-off-by: jljusten git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12091 6f19259b-4bc3-4df7-8a09-765794883524
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8379337c91
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eec7d42017
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@ -1,7 +1,9 @@
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/**@file
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/**@file
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Platform PEI driver
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Platform PEI driver
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>
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This program and the accompanying materials
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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which accompanies this distribution. The full text of the license may be found at
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@ -73,6 +75,22 @@ AddIoMemoryBaseSizeHob (
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);
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);
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}
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}
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VOID
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AddReservedMemoryBaseSizeHob (
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EFI_PHYSICAL_ADDRESS MemoryBase,
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UINT64 MemorySize
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)
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{
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BuildResourceDescriptorHob (
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EFI_RESOURCE_MEMORY_RESERVED,
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EFI_RESOURCE_ATTRIBUTE_PRESENT |
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EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
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EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_TESTED,
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MemoryBase,
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MemorySize
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);
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}
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VOID
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VOID
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AddIoMemoryRangeHob (
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AddIoMemoryRangeHob (
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@ -164,19 +182,19 @@ MemMapInitialization (
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//
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//
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BuildResourceDescriptorHob (
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BuildResourceDescriptorHob (
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EFI_RESOURCE_IO,
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EFI_RESOURCE_IO,
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EFI_RESOURCE_ATTRIBUTE_PRESENT |
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EFI_RESOURCE_ATTRIBUTE_PRESENT |
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EFI_RESOURCE_ATTRIBUTE_INITIALIZED,
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EFI_RESOURCE_ATTRIBUTE_INITIALIZED,
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0x1000,
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0xC000,
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0xF000
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0x4000
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);
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);
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//
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//
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// Add PCI MMIO space available to PCI resource allocations
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// Add PCI MMIO space available to PCI resource allocations
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//
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//
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if (TopOfMemory < BASE_2GB) {
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if (TopOfMemory < BASE_2GB) {
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AddIoMemoryBaseSizeHob (BASE_2GB, 0xFEC00000 - BASE_2GB);
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AddIoMemoryBaseSizeHob (BASE_2GB, 0xFC000000 - BASE_2GB);
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} else {
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} else {
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AddIoMemoryBaseSizeHob (TopOfMemory, 0xFEC00000 - TopOfMemory);
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AddIoMemoryBaseSizeHob (TopOfMemory, 0xFC000000 - TopOfMemory);
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}
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}
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//
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//
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@ -198,6 +216,7 @@ MemMapInitialization (
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VOID
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VOID
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MiscInitialization (
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MiscInitialization (
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BOOLEAN Xen
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)
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)
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{
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{
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//
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//
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@ -210,10 +229,12 @@ MiscInitialization (
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//
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//
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BuildCpuHob (36, 16);
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BuildCpuHob (36, 16);
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//
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if (!Xen) {
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// Set the PM I/O base address to 0x400
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//
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//
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// Set the PM I/O base address to 0x400
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PciAndThenOr32 (PCI_LIB_ADDRESS (0, 1, 3, 0x40), (UINT32) ~0xfc0, 0x400);
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//
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PciAndThenOr32 (PCI_LIB_ADDRESS (0, 1, 3, 0x40), (UINT32) ~0xfc0, 0x400);
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}
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}
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}
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@ -294,7 +315,9 @@ InitializePlatform (
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IN CONST EFI_PEI_SERVICES **PeiServices
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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)
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{
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{
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EFI_STATUS Status;
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EFI_PHYSICAL_ADDRESS TopOfMemory;
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EFI_PHYSICAL_ADDRESS TopOfMemory;
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BOOLEAN Xen;
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DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));
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DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));
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@ -302,13 +325,16 @@ InitializePlatform (
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TopOfMemory = MemDetect ();
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TopOfMemory = MemDetect ();
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Status = InitializeXen ();
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Xen = EFI_ERROR (Status) ? FALSE : TRUE;
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ReserveEmuVariableNvStore ();
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ReserveEmuVariableNvStore ();
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PeiFvInitialization ();
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PeiFvInitialization ();
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MemMapInitialization (TopOfMemory);
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MemMapInitialization (TopOfMemory);
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MiscInitialization ();
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MiscInitialization (Xen);
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BootModeInitialization ();
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BootModeInitialization ();
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@ -1,7 +1,7 @@
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/** @file
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/** @file
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Platform PEI module include file.
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Platform PEI module include file.
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Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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which accompanies this distribution. The full text of the license may be found at
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@ -45,6 +45,12 @@ AddUntestedMemoryBaseSizeHob (
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UINT64 MemorySize
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UINT64 MemorySize
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);
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);
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VOID
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AddReservedMemoryBaseSizeHob (
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EFI_PHYSICAL_ADDRESS MemoryBase,
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UINT64 MemorySize
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);
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VOID
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VOID
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AddUntestedMemoryRangeHob (
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AddUntestedMemoryRangeHob (
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EFI_PHYSICAL_ADDRESS MemoryBase,
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EFI_PHYSICAL_ADDRESS MemoryBase,
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@ -61,4 +67,9 @@ PeiFvInitialization (
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VOID
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VOID
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);
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);
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EFI_STATUS
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InitializeXen (
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VOID
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);
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#endif // _PLATFORM_PEI_H_INCLUDED_
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#endif // _PLATFORM_PEI_H_INCLUDED_
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@ -2,7 +2,7 @@
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# Platform PEI driver
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# Platform PEI driver
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#
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#
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# This module provides platform specific function to detect boot mode.
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# This module provides platform specific function to detect boot mode.
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# Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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# Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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#
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#
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# This program and the accompanying materials
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# are licensed and made available under the terms and conditions of the BSD License
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@ -33,6 +33,7 @@
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Fv.c
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Fv.c
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MemDetect.c
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MemDetect.c
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Platform.c
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Platform.c
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Xen.c
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[Packages]
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[Packages]
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MdePkg/MdePkg.dec
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MdePkg/MdePkg.dec
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@ -41,6 +42,7 @@
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[Guids]
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[Guids]
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gEfiMemoryTypeInformationGuid
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gEfiMemoryTypeInformationGuid
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gEfiXenInfoGuid
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[LibraryClasses]
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[LibraryClasses]
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DebugLib
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DebugLib
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@ -0,0 +1,144 @@
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/**@file
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Xen Platform PEI support
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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//
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// The package level header files this module uses
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//
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#include <PiPei.h>
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//
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// The Library classes this module consumes
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//
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PcdLib.h>
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#include <Guid/XenInfo.h>
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#include "Platform.h"
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EFI_XEN_INFO mXenInfo;
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/**
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Connects to the Hypervisor.
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@param XenLeaf CPUID index used to connect.
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@return EFI_STATUS
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**/
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EFI_STATUS
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XenConnect (
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UINT32 XenLeaf
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)
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{
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UINT32 Index;
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UINT32 TransferReg;
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UINT32 TransferPages;
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UINT32 XenVersion;
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AsmCpuid (XenLeaf + 2, &TransferPages, &TransferReg, NULL, NULL);
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mXenInfo.HyperPages = AllocatePages (TransferPages);
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if (!mXenInfo.HyperPages) {
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return EFI_OUT_OF_RESOURCES;
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}
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for (Index = 0; Index < TransferPages; Index++) {
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AsmWriteMsr64 (TransferReg,
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(UINTN) mXenInfo.HyperPages +
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(Index << EFI_PAGE_SHIFT) + Index);
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}
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AsmCpuid (XenLeaf + 1, &XenVersion, NULL, NULL, NULL);
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DEBUG ((EFI_D_ERROR, "Detected Xen version %d.%d\n",
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XenVersion >> 16, XenVersion & 0xFFFF));
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mXenInfo.VersionMajor = XenVersion >> 16;
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mXenInfo.VersionMinor = XenVersion & 0xFFFF;
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/* TBD: Locate hvm_info and reserve it away. */
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mXenInfo.HvmInfo = NULL;
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BuildGuidDataHob (
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&gEfiXenInfoGuid,
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&mXenInfo,
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sizeof(mXenInfo)
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);
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return EFI_SUCCESS;
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}
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/**
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Figures out if we are running inside Xen HVM.
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@return UINT32 CPUID index used to connect to HV.
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**/
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UINT32
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XenDetect (
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VOID
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)
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{
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UINT32 XenLeaf;
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UINT8 Signature[13];
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for (XenLeaf = 0x40000000; XenLeaf < 0x40010000; XenLeaf += 0x100) {
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AsmCpuid (XenLeaf, NULL, (UINT32 *) &Signature[0],
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(UINT32 *) &Signature[4],
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(UINT32 *) &Signature[8]);
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Signature[12] = '\0';
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if (!AsciiStrCmp ((CHAR8 *) Signature, "XenVMMXenVMM")) {
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return XenLeaf;
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}
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}
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return 0;
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}
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/**
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Perform Xen PEI initialization.
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@return EFI_SUCCESS Xen initialized successfully
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@return EFI_NOT_FOUND Not running under Xen
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**/
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EFI_STATUS
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InitializeXen (
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VOID
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)
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{
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UINT32 XenLeaf;
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XenLeaf = XenDetect ();
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if (XenLeaf == 0) {
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return EFI_NOT_FOUND;
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}
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DEBUG ((EFI_D_INFO, "Xen was detected\n"));
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XenConnect (XenLeaf);
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//
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// Reserve away HVMLOADER reserved memory [0xFC000000,0xFD000000).
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// This needs to match HVMLOADER RESERVED_MEMBASE/RESERVED_MEMSIZE.
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//
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AddReservedMemoryBaseSizeHob (0xFC000000, 0x1000000);
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return EFI_SUCCESS;
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}
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