1d3e89f349
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>
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/** @file
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Reset System Library functions for OVMF
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Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h> // BIT1
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#include <Library/BaseLib.h> // CpuDeadLoop()
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#include <Library/DebugLib.h> // ASSERT()
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#include <Library/IoLib.h> // IoWrite8()
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#include <Library/ResetSystemLib.h> // ResetCold()
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#include <Library/TimerLib.h> // MicroSecondDelay()
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#include <Library/UefiRuntimeLib.h> // EfiGoneVirtual()
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#include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE
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static UINTN MicrovmGedBase (VOID)
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{
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VOID *Address = (VOID*) MICROVM_GED_MMIO_BASE_REGS;
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if (EfiGoneVirtual ()) {
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EfiConvertPointer (0, &Address);
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DEBUG ((DEBUG_INFO, "%a: virtual -> 0x%x\n", __FUNCTION__, Address));
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} else {
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DEBUG ((DEBUG_INFO, "%a: physical -> 0x%x\n", __FUNCTION__, Address));
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}
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return (UINTN) Address;
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}
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static VOID MicrovmReset (VOID)
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{
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UINTN Address = MicrovmGedBase();
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DEBUG ((DEBUG_INFO, "%a: microvm reset via ged\n", __FUNCTION__));
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MmioWrite8 (Address + MICROVM_ACPI_GED_REG_RESET,
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MICROVM_ACPI_GED_RESET_VALUE);
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CpuDeadLoop ();
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}
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static VOID MicrovmShutdown (VOID)
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{
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UINTN Address = MicrovmGedBase();
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DEBUG ((DEBUG_INFO, "%a: microvm poweroff via ged\n", __FUNCTION__));
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MmioWrite8 (Address + MICROVM_ACPI_GED_REG_SLEEP_CTL,
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(1 << 5) /* enable bit */ |
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(5 << 2) /* typ == S5 */);
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CpuDeadLoop ();
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}
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VOID EFIAPI ResetCold (VOID)
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{
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MicrovmReset();
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}
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VOID EFIAPI ResetWarm (VOID)
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{
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MicrovmReset();
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}
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VOID
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EFIAPI
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ResetPlatformSpecific (
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IN UINTN DataSize,
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IN VOID *ResetData
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)
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{
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MicrovmReset();
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}
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VOID
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EFIAPI
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ResetSystem (
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IN EFI_RESET_TYPE ResetType,
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IN EFI_STATUS ResetStatus,
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IN UINTN DataSize,
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IN VOID *ResetData OPTIONAL
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)
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{
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MicrovmReset();
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}
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VOID EFIAPI ResetShutdown (VOID)
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{
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MicrovmShutdown();
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}
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