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OvmfPkg/ResetSystemLib: add driver for microvm

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Uses the generic event device to reset and poweroff.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3599
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
This commit is contained in:
Gerd Hoffmann
2021-09-08 11:01:14 +02:00
committed by mergify[bot]
parent bf02d73e74
commit 1d3e89f349
8 changed files with 231 additions and 7 deletions
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37
OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf Normal file
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## @file
# DXE library instance for ResetSystem library class for OVMF
#
# Copyright (C) 2020, Red Hat, Inc.
# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
[Defines]
INF_VERSION = 1.29
BASE_NAME = ResetSystemLibMicrovm
FILE_GUID = 7cd630bb-f581-4d1a-97ca-9dbc900e26a4
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = ResetSystemLib|SEC PEI_CORE PEIM DXE_CORE
#
# The following information is for reference only and not required by the build
# tools.
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
ResetSystemLibMicrovm.c
[Packages]
MdeModulePkg/MdeModulePkg.dec
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
BaseLib
DebugLib
IoLib
TimerLib

49
OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c Normal file
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/** @file
Reset System Library functions for OVMF
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h> // BIT1
#include <PiDxe.h>
#include <Library/BaseLib.h> // CpuDeadLoop()
#include <Library/DebugLib.h> // ASSERT()
#include <Library/DxeServicesTableLib.h>
#include <Library/IoLib.h> // IoWrite8()
#include <Library/ResetSystemLib.h> // ResetCold()
#include <Library/TimerLib.h> // MicroSecondDelay()
#include <Library/UefiRuntimeLib.h> // EfiGoneVirtual()
#include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE
EFI_STATUS
EFIAPI
DxeResetSystemLibMicrovmConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
UINTN Address = MICROVM_GED_MMIO_BASE;
EFI_STATUS Status;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;
DEBUG ((DEBUG_INFO, "%a: start\n", __FUNCTION__));
Status = gDS->GetMemorySpaceDescriptor (Address, &Descriptor);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "%a: GetMemorySpaceDescriptor failed\n", __FUNCTION__));
return RETURN_UNSUPPORTED;
}
Status = gDS->SetMemorySpaceAttributes (Address, SIZE_4KB,
Descriptor.Attributes | EFI_MEMORY_RUNTIME);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "%a: SetMemorySpaceAttributes failed\n", __FUNCTION__));
return RETURN_UNSUPPORTED;
}
DEBUG ((DEBUG_INFO, "%a: done\n", __FUNCTION__));
return EFI_SUCCESS;
}

40
OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf Normal file
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## @file
# DXE library instance for ResetSystem library class for OVMF
#
# Copyright (C) 2020, Red Hat, Inc.
# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
[Defines]
INF_VERSION = 1.29
BASE_NAME = ResetSystemLibMicrovm
FILE_GUID = 3d6faf60-804a-4ca9-a36a-1a92416919d0
MODULE_TYPE = DXE_RUNTIME_DRIVER
VERSION_STRING = 1.0
LIBRARY_CLASS = ResetSystemLib|DXE_DRIVER DXE_RUNTIME_DRIVER SMM_CORE DXE_SMM_DRIVER UEFI_DRIVER UEFI_APPLICATION
CONSTRUCTOR = DxeResetSystemLibMicrovmConstructor
#
# The following information is for reference only and not required by the build
# tools.
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
ResetSystemLibMicrovm.c
DxeResetSystemLibMicrovm.c
[Packages]
MdeModulePkg/MdeModulePkg.dec
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
BaseLib
DebugLib
DxeServicesTableLib
IoLib
TimerLib

89
OvmfPkg/Library/ResetSystemLib/ResetSystemLibMicrovm.c Normal file
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/** @file
Reset System Library functions for OVMF
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h> // BIT1
#include <Library/BaseLib.h> // CpuDeadLoop()
#include <Library/DebugLib.h> // ASSERT()
#include <Library/IoLib.h> // IoWrite8()
#include <Library/ResetSystemLib.h> // ResetCold()
#include <Library/TimerLib.h> // MicroSecondDelay()
#include <Library/UefiRuntimeLib.h> // EfiGoneVirtual()
#include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE
static UINTN MicrovmGedBase (VOID)
{
VOID *Address = (VOID*) MICROVM_GED_MMIO_BASE_REGS;
if (EfiGoneVirtual ()) {
EfiConvertPointer (0, &Address);
DEBUG ((DEBUG_INFO, "%a: virtual -> 0x%x\n", __FUNCTION__, Address));
} else {
DEBUG ((DEBUG_INFO, "%a: physical -> 0x%x\n", __FUNCTION__, Address));
}
return (UINTN) Address;
}
static VOID MicrovmReset (VOID)
{
UINTN Address = MicrovmGedBase();
DEBUG ((DEBUG_INFO, "%a: microvm reset via ged\n", __FUNCTION__));
MmioWrite8 (Address + MICROVM_ACPI_GED_REG_RESET,
MICROVM_ACPI_GED_RESET_VALUE);
CpuDeadLoop ();
}
static VOID MicrovmShutdown (VOID)
{
UINTN Address = MicrovmGedBase();
DEBUG ((DEBUG_INFO, "%a: microvm poweroff via ged\n", __FUNCTION__));
MmioWrite8 (Address + MICROVM_ACPI_GED_REG_SLEEP_CTL,
(1 << 5) /* enable bit */ |
(5 << 2) /* typ == S5 */);
CpuDeadLoop ();
}
VOID EFIAPI ResetCold (VOID)
{
MicrovmReset();
}
VOID EFIAPI ResetWarm (VOID)
{
MicrovmReset();
}
VOID
EFIAPI
ResetPlatformSpecific (
IN UINTN DataSize,
IN VOID *ResetData
)
{
MicrovmReset();
}
VOID
EFIAPI
ResetSystem (
IN EFI_RESET_TYPE ResetType,
IN EFI_STATUS ResetStatus,
IN UINTN DataSize,
IN VOID *ResetData OPTIONAL
)
{
MicrovmReset();
}
VOID EFIAPI ResetShutdown (VOID)
{
MicrovmShutdown();
}