eaea26b781
EnterS3WithImmediateWake () no longer has any callers, so remove it from ResetSystemLib. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Guo Dong <guo.dong@intel.com>
154 lines
3.7 KiB
C
154 lines
3.7 KiB
C
/** @file
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Reset System Library functions for bootloader
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Copyright (c) 2014 - 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 <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/HobLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Guid/AcpiBoardInfoGuid.h>
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ACPI_BOARD_INFO mAcpiBoardInfo;
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/**
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The constructor function to initialize mAcpiBoardInfo.
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@retval EFI_SUCCESS The constructor always returns RETURN_SUCCESS.
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**/
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RETURN_STATUS
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EFIAPI
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ResetSystemLibConstructor (
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VOID
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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ACPI_BOARD_INFO *AcpiBoardInfoPtr;
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//
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// Find the acpi board information guid hob
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//
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GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
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ASSERT (GuidHob != NULL);
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AcpiBoardInfoPtr = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
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CopyMem (&mAcpiBoardInfo, AcpiBoardInfoPtr, sizeof (ACPI_BOARD_INFO));
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return EFI_SUCCESS;
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}
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VOID
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AcpiPmControl (
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UINTN SuspendType
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)
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{
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UINTN PmCtrlReg;
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ASSERT (SuspendType <= 7);
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PmCtrlReg = (UINTN)mAcpiBoardInfo.PmCtrlRegBase;
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IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));
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IoOr16 (PmCtrlReg, BIT13);
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CpuDeadLoop ();
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}
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/**
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Calling this function causes a system-wide reset. This sets
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all circuitry within the system to its initial state. This type of reset
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is asynchronous to system operation and operates without regard to
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cycle boundaries.
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System reset should not return, if it returns, it means the system does
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not support cold reset.
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**/
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VOID
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EFIAPI
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ResetCold (
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VOID
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)
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{
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IoWrite8 ((UINTN)mAcpiBoardInfo.ResetRegAddress, mAcpiBoardInfo.ResetValue);
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CpuDeadLoop ();
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}
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/**
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Calling this function causes a system-wide initialization. The processors
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are set to their initial state, and pending cycles are not corrupted.
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System reset should not return, if it returns, it means the system does
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not support warm reset.
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**/
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VOID
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EFIAPI
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ResetWarm (
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VOID
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)
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{
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IoWrite8 ((UINTN)mAcpiBoardInfo.ResetRegAddress, mAcpiBoardInfo.ResetValue);
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CpuDeadLoop ();
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}
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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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UINTN PmCtrlReg;
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//
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// GPE0_EN should be disabled to avoid any GPI waking up the system from S5
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//
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IoWrite16 ((UINTN)mAcpiBoardInfo.PmGpeEnBase, 0);
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//
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// Clear Power Button Status
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//
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IoWrite16((UINTN) mAcpiBoardInfo.PmEvtBase, BIT8);
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//
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// Transform system into S5 sleep state
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//
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PmCtrlReg = (UINTN)mAcpiBoardInfo.PmCtrlRegBase;
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IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (7 << 10));
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IoOr16 (PmCtrlReg, BIT13);
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CpuDeadLoop ();
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ASSERT (FALSE);
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}
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/**
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This function causes a systemwide reset. The exact type of the reset is
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defined by the EFI_GUID that follows the Null-terminated Unicode string passed
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into ResetData. If the platform does not recognize the EFI_GUID in ResetData
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the platform must pick a supported reset type to perform.The platform may
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optionally log the parameters from any non-normal reset that occurs.
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@param[in] DataSize The size, in bytes, of ResetData.
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@param[in] ResetData The data buffer starts with a Null-terminated string,
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followed by the EFI_GUID.
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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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ResetCold ();
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}
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