/** @file
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File to contain all the hardware specific stuff for the Smm Power Button dispatch protocol.
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Copyright (c) 2017, 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 <PchSmmHelpers.h>
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GLOBAL_REMOVE_IF_UNREFERENCED CONST PCH_SMM_SOURCE_DESC POWER_BUTTON_SOURCE_DESC = {
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PCH_SMM_SCI_EN_DEPENDENT,
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{
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{
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{
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ACPI_ADDR_TYPE,
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{R_PCH_ACPI_PM1_EN}
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},
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S_PCH_ACPI_PM1_EN,
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N_PCH_ACPI_PM1_EN_PWRBTN
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},
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NULL_BIT_DESC_INITIALIZER
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},
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{
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{
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{
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ACPI_ADDR_TYPE,
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{R_PCH_ACPI_PM1_STS}
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},
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S_PCH_ACPI_PM1_STS,
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N_PCH_ACPI_PM1_STS_PWRBTN
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}
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},
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{
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{
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ACPI_ADDR_TYPE,
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{R_PCH_SMI_STS}
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},
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S_PCH_SMI_STS,
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N_PCH_SMI_STS_PM1_STS_REG
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}
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};
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/**
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Get the power button status.
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@param[in] Record The pointer to the DATABASE_RECORD.
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@param[out] Context Calling context from the hardware, will be updated with the current power button status.
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**/
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VOID
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EFIAPI
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PowerButtonGetContext (
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IN DATABASE_RECORD *Record,
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OUT PCH_SMM_CONTEXT *Context
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)
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{
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UINT32 GenPmConA;
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UINTN PmcBaseAddress;
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PmcBaseAddress = MmPciBase (
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DEFAULT_PCI_BUS_NUMBER_PCH,
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PCI_DEVICE_NUMBER_PCH_PMC,
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PCI_FUNCTION_NUMBER_PCH_PMC
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);
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GenPmConA = MmioRead32 (PmcBaseAddress + R_PCH_PMC_GEN_PMCON_A);
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if ((GenPmConA & B_PCH_PMC_GEN_PMCON_A_PWRBTN_LVL) != 0) {
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Context->PowerButton.Phase = EfiPowerButtonExit;
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} else {
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Context->PowerButton.Phase = EfiPowerButtonEntry;
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}
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}
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/**
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Check whether Power Button status of two contexts match
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@param[in] Context1 Context 1 that includes Power Button status 1
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@param[in] Context2 Context 2 that includes Power Button status 2
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@retval FALSE Power Button status match
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@retval TRUE Power Button status don't match
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**/
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BOOLEAN
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EFIAPI
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PowerButtonCmpContext (
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IN PCH_SMM_CONTEXT *Context1,
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IN PCH_SMM_CONTEXT *Context2
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)
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{
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return (BOOLEAN) (Context1->PowerButton.Phase == Context2->PowerButton.Phase);
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}
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