diff options
Diffstat (limited to 'OvmfPkg/PlatformPei/Xen.c')
| -rw-r--r-- | OvmfPkg/PlatformPei/Xen.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/OvmfPkg/PlatformPei/Xen.c b/OvmfPkg/PlatformPei/Xen.c deleted file mode 100644 index 104922c67e..0000000000 --- a/OvmfPkg/PlatformPei/Xen.c +++ /dev/null @@ -1,222 +0,0 @@ -/**@file
- Xen Platform PEI support
-
- Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
- Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-//
-// The package level header files this module uses
-//
-#include <PiPei.h>
-
-//
-// The Library classes this module consumes
-//
-#include <Library/DebugLib.h>
-#include <Library/HobLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/PcdLib.h>
-#include <Guid/XenInfo.h>
-#include <IndustryStandard/E820.h>
-#include <Library/ResourcePublicationLib.h>
-#include <Library/MtrrLib.h>
-
-#include "Platform.h"
-#include "Xen.h"
-
-BOOLEAN mXen = FALSE;
-
-STATIC UINT32 mXenLeaf = 0;
-
-EFI_XEN_INFO mXenInfo;
-
-/**
- Returns E820 map provided by Xen
-
- @param Entries Pointer to E820 map
- @param Count Number of entries
-
- @return EFI_STATUS
-**/
-EFI_STATUS
-XenGetE820Map (
- EFI_E820_ENTRY64 **Entries,
- UINT32 *Count
- )
-{
- EFI_XEN_OVMF_INFO *Info =
- (EFI_XEN_OVMF_INFO *)(UINTN) OVMF_INFO_PHYSICAL_ADDRESS;
-
- if (AsciiStrCmp ((CHAR8 *) Info->Signature, "XenHVMOVMF")) {
- return EFI_NOT_FOUND;
- }
-
- ASSERT (Info->E820 < MAX_ADDRESS);
- *Entries = (EFI_E820_ENTRY64 *)(UINTN) Info->E820;
- *Count = Info->E820EntriesCount;
-
- return EFI_SUCCESS;
-}
-
-/**
- Connects to the Hypervisor.
-
- @param XenLeaf CPUID index used to connect.
-
- @return EFI_STATUS
-
-**/
-EFI_STATUS
-XenConnect (
- UINT32 XenLeaf
- )
-{
- UINT32 Index;
- UINT32 TransferReg;
- UINT32 TransferPages;
- UINT32 XenVersion;
-
- AsmCpuid (XenLeaf + 2, &TransferPages, &TransferReg, NULL, NULL);
- mXenInfo.HyperPages = AllocatePages (TransferPages);
- if (!mXenInfo.HyperPages) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- for (Index = 0; Index < TransferPages; Index++) {
- AsmWriteMsr64 (TransferReg,
- (UINTN) mXenInfo.HyperPages +
- (Index << EFI_PAGE_SHIFT) + Index);
- }
-
- AsmCpuid (XenLeaf + 1, &XenVersion, NULL, NULL, NULL);
- DEBUG ((DEBUG_ERROR, "Detected Xen version %d.%d\n",
- XenVersion >> 16, XenVersion & 0xFFFF));
- mXenInfo.VersionMajor = (UINT16)(XenVersion >> 16);
- mXenInfo.VersionMinor = (UINT16)(XenVersion & 0xFFFF);
-
- BuildGuidDataHob (
- &gEfiXenInfoGuid,
- &mXenInfo,
- sizeof(mXenInfo)
- );
-
- return EFI_SUCCESS;
-}
-
-/**
- Figures out if we are running inside Xen HVM.
-
- @retval TRUE Xen was detected
- @retval FALSE Xen was not detected
-
-**/
-BOOLEAN
-XenDetect (
- VOID
- )
-{
- UINT8 Signature[13];
-
- if (mXenLeaf != 0) {
- return TRUE;
- }
-
- Signature[12] = '\0';
- for (mXenLeaf = 0x40000000; mXenLeaf < 0x40010000; mXenLeaf += 0x100) {
- AsmCpuid (mXenLeaf,
- NULL,
- (UINT32 *) &Signature[0],
- (UINT32 *) &Signature[4],
- (UINT32 *) &Signature[8]);
-
- if (!AsciiStrCmp ((CHAR8 *) Signature, "XenVMMXenVMM")) {
- mXen = TRUE;
- return TRUE;
- }
- }
-
- mXenLeaf = 0;
- return FALSE;
-}
-
-
-VOID
-XenPublishRamRegions (
- VOID
- )
-{
- EFI_E820_ENTRY64 *E820Map;
- UINT32 E820EntriesCount;
- EFI_STATUS Status;
-
- if (!mXen) {
- return;
- }
-
- DEBUG ((DEBUG_INFO, "Using memory map provided by Xen\n"));
-
- //
- // Parse RAM in E820 map
- //
- E820EntriesCount = 0;
- Status = XenGetE820Map (&E820Map, &E820EntriesCount);
-
- ASSERT_EFI_ERROR (Status);
-
- if (E820EntriesCount > 0) {
- EFI_E820_ENTRY64 *Entry;
- UINT32 Loop;
-
- for (Loop = 0; Loop < E820EntriesCount; Loop++) {
- Entry = E820Map + Loop;
-
- //
- // Only care about RAM
- //
- if (Entry->Type != EfiAcpiAddressRangeMemory) {
- continue;
- }
-
- AddMemoryBaseSizeHob (Entry->BaseAddr, Entry->Length);
-
- MtrrSetMemoryAttribute (Entry->BaseAddr, Entry->Length, CacheWriteBack);
- }
- }
-}
-
-
-/**
- Perform Xen PEI initialization.
-
- @return EFI_SUCCESS Xen initialized successfully
- @return EFI_NOT_FOUND Not running under Xen
-
-**/
-EFI_STATUS
-InitializeXen (
- VOID
- )
-{
- RETURN_STATUS PcdStatus;
-
- if (mXenLeaf == 0) {
- return EFI_NOT_FOUND;
- }
-
- XenConnect (mXenLeaf);
-
- //
- // Reserve away HVMLOADER reserved memory [0xFC000000,0xFD000000).
- // This needs to match HVMLOADER RESERVED_MEMBASE/RESERVED_MEMSIZE.
- //
- AddReservedMemoryBaseSizeHob (0xFC000000, 0x1000000, FALSE);
-
- PcdStatus = PcdSetBoolS (PcdPciDisableBusEnumeration, TRUE);
- ASSERT_RETURN_ERROR (PcdStatus);
-
- return EFI_SUCCESS;
-}
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