d70cdcf0b5
In preparation for introducing DxeResetSystemLib, rename the current (only) ResetSystemLib instance to BaseResetSystemLib. In the DSC files, keep the ResetSystemLib resolution in the same [LibraryClasses] section, but move it near the TimerLib resolution, as the differences between the ResetSystemLib instances will mostly follow those seen under OvmfPkg/Library/AcpiTimerLib. (While OvmfXen does not use "OvmfPkg/Library/AcpiTimerLib", perform the same movement there too, for keeping future DSC diffing simple.) Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Ard Biesheuvel <ard.biesheuvel@arm.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Julien Grall <julien@xen.org> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Cc: Rebecca Cran <rebecca@bsdio.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2675 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Message-Id: <20200417153751.7110-6-lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com> Reviewed-by: Rebecca Cran <rebecca@bsdio.com>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/** @file
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Base Reset System Library Shutdown API implementation for OVMF.
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Copyright (C) 2020, Red Hat, Inc.
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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> // BIT13
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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> // IoOr16()
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#include <Library/PciLib.h> // PciRead16()
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#include <Library/ResetSystemLib.h> // ResetShutdown()
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#include <OvmfPlatforms.h> // OVMF_HOSTBRIDGE_DID
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/**
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Calling this function causes the system to enter a power state equivalent
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to the ACPI G2/S5 or G3 states.
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System shutdown should not return, if it returns, it means the system does
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not support shut down reset.
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**/
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VOID
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EFIAPI
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ResetShutdown (
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VOID
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)
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{
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UINT16 AcpiPmBaseAddress;
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UINT16 HostBridgeDevId;
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AcpiPmBaseAddress = 0;
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HostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID);
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switch (HostBridgeDevId) {
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case INTEL_82441_DEVICE_ID:
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AcpiPmBaseAddress = PIIX4_PMBA_VALUE;
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break;
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case INTEL_Q35_MCH_DEVICE_ID:
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AcpiPmBaseAddress = ICH9_PMBASE_VALUE;
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break;
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default:
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ASSERT (FALSE);
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CpuDeadLoop ();
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}
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IoBitFieldWrite16 (AcpiPmBaseAddress + 4, 10, 13, 0);
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IoOr16 (AcpiPmBaseAddress + 4, BIT13);
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CpuDeadLoop ();
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}
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