[edk2-devel] [PATCH 14/17] OvmfPkg/ResetSystemLib: add driver for microvm
Gerd Hoffmann
kraxel at redhat.com
Tue Aug 31 09:57:11 UTC 2021
Uses the generic event device to reset and poweroff.
Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
OvmfPkg/Microvm/MicrovmX64.dsc | 14 +--
.../BaseResetSystemLibMicrovm.inf | 37 ++++++++
.../DxeResetSystemLibMicrovm.inf | 40 +++++++++
OvmfPkg/Include/IndustryStandard/Microvm.h | 7 ++
OvmfPkg/Include/OvmfPlatforms.h | 1 +
.../ResetSystemLib/DxeResetSystemLibMicrovm.c | 49 ++++++++++
.../ResetSystemLib/ResetSystemLibMicrovm.c | 89 +++++++++++++++++++
OvmfPkg/PlatformPei/Platform.c | 1 +
8 files changed, 231 insertions(+), 7 deletions(-)
create mode 100644 OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf
create mode 100644 OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
create mode 100644 OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c
create mode 100644 OvmfPkg/Library/ResetSystemLib/ResetSystemLibMicrovm.c
diff --git a/OvmfPkg/Microvm/MicrovmX64.dsc b/OvmfPkg/Microvm/MicrovmX64.dsc
index 8d17bb4f0520..aaab0fda19c1 100644
--- a/OvmfPkg/Microvm/MicrovmX64.dsc
+++ b/OvmfPkg/Microvm/MicrovmX64.dsc
@@ -128,7 +128,7 @@ [SkuIds]
[LibraryClasses]
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|MdePkg/Library/SecPeiDxeTimerLibCpu/SecPeiDxeTimerLibCpu.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
@@ -318,7 +318,7 @@ [LibraryClasses.common.DXE_CORE]
[LibraryClasses.common.DXE_RUNTIME_DRIVER]
PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
@@ -336,7 +336,7 @@ [LibraryClasses.common.DXE_RUNTIME_DRIVER]
[LibraryClasses.common.UEFI_DRIVER]
PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
@@ -351,7 +351,7 @@ [LibraryClasses.common.UEFI_DRIVER]
[LibraryClasses.common.DXE_DRIVER]
PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
@@ -376,7 +376,7 @@ [LibraryClasses.common.DXE_DRIVER]
[LibraryClasses.common.UEFI_APPLICATION]
PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
@@ -389,7 +389,7 @@ [LibraryClasses.common.UEFI_APPLICATION]
[LibraryClasses.common.DXE_SMM_DRIVER]
PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
MemoryAllocationLib|MdePkg/Library/SmmMemoryAllocationLib/SmmMemoryAllocationLib.inf
ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
@@ -410,7 +410,7 @@ [LibraryClasses.common.DXE_SMM_DRIVER]
[LibraryClasses.common.SMM_CORE]
PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf
- ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLib.inf
+ ResetSystemLib|OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
SmmCorePlatformHookLib|MdeModulePkg/Library/SmmCorePlatformHookLibNull/SmmCorePlatformHookLibNull.inf
MemoryAllocationLib|MdeModulePkg/Library/PiSmmCoreMemoryAllocationLib/PiSmmCoreMemoryAllocationLib.inf
ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf
diff --git a/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf b/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf
new file mode 100644
index 000000000000..74cf7c9b443d
--- /dev/null
+++ b/OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf
@@ -0,0 +1,37 @@
+## @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
diff --git a/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf b/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
new file mode 100644
index 000000000000..8059ebee6ee3
--- /dev/null
+++ b/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.inf
@@ -0,0 +1,40 @@
+## @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
diff --git a/OvmfPkg/Include/IndustryStandard/Microvm.h b/OvmfPkg/Include/IndustryStandard/Microvm.h
index ba5ce3ecfb98..1debc7a316e2 100644
--- a/OvmfPkg/Include/IndustryStandard/Microvm.h
+++ b/OvmfPkg/Include/IndustryStandard/Microvm.h
@@ -3,4 +3,11 @@
#define MICROVM_PSEUDO_DEVICE_ID 0xfff1
+/* generic event device */
+#define MICROVM_GED_MMIO_BASE 0xfea00000
+#define MICROVM_GED_MMIO_BASE_REGS (MICROVM_GED_MMIO_BASE + 0x200)
+#define MICROVM_ACPI_GED_REG_SLEEP_CTL 0x00
+#define MICROVM_ACPI_GED_REG_RESET 0x02
+#define MICROVM_ACPI_GED_RESET_VALUE 0x42
+
#endif // __MICROVM_H__
diff --git a/OvmfPkg/Include/OvmfPlatforms.h b/OvmfPkg/Include/OvmfPlatforms.h
index 77dd818e3002..3b85593b7063 100644
--- a/OvmfPkg/Include/OvmfPlatforms.h
+++ b/OvmfPkg/Include/OvmfPlatforms.h
@@ -15,6 +15,7 @@
#include <IndustryStandard/Q35MchIch9.h>
#include <IndustryStandard/I440FxPiix4.h>
#include <IndustryStandard/Bhyve.h>
+#include <IndustryStandard/Microvm.h>
//
// OVMF Host Bridge DID Address
diff --git a/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c b/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c
new file mode 100644
index 000000000000..907a13d17c32
--- /dev/null
+++ b/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c
@@ -0,0 +1,49 @@
+/** @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;
+}
diff --git a/OvmfPkg/Library/ResetSystemLib/ResetSystemLibMicrovm.c b/OvmfPkg/Library/ResetSystemLib/ResetSystemLibMicrovm.c
new file mode 100644
index 000000000000..5c714cf06a54
--- /dev/null
+++ b/OvmfPkg/Library/ResetSystemLib/ResetSystemLibMicrovm.c
@@ -0,0 +1,89 @@
+/** @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();
+}
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index aeb39595aa28..df2d9ad015aa 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -161,6 +161,7 @@ MemMapInitialization (
AddIoMemoryRangeHob (0x0A0000, BASE_1MB);
if (mHostBridgeDevId == 0xffff /* microvm */) {
+ AddIoMemoryBaseSizeHob (MICROVM_GED_MMIO_BASE, SIZE_4KB);
AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB); /* ioapic #1 */
AddIoMemoryBaseSizeHob (0xFEC10000, SIZE_4KB); /* ioapic #2 */
return;
--
2.31.1
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