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| author | Gerd Hoffmann <kraxel@redhat.com> | 2021-09-08 11:01:14 +0200 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-10-05 10:55:39 +0000 |
| commit | 1d3e89f3490f05a20df0470a21767d063587a596 (patch) | |
| tree | 8e62f886b89cde28791e276e2200bdcaa5d5dbac /OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c | |
| parent | bf02d73e74ec2825551126c780df726cc543cfb0 (diff) | |
| download | edk2-1d3e89f3490f05a20df0470a21767d063587a596.tar.gz edk2-1d3e89f3490f05a20df0470a21767d063587a596.tar.bz2 edk2-1d3e89f3490f05a20df0470a21767d063587a596.zip | |
OvmfPkg/ResetSystemLib: add driver for microvm
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>
Diffstat (limited to 'OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c')
| -rw-r--r-- | OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c b/OvmfPkg/Library/ResetSystemLib/DxeResetSystemLibMicrovm.c new file mode 100644 index 0000000000..0de8b39f54 --- /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;
+}
|