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/** @file
CPU DXE Module to produce CPU ARCH Protocol and CPU MP Protocol.
Copyright (c) 2008 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _CPU_DXE_H_
#define _CPU_DXE_H_
#include <PiDxe.h>
#include <Protocol/Cpu.h>
#include <Protocol/MpService.h>
#include <Register/Intel/Msr.h>
#include <Ppi/SecPlatformInformation.h>
#include <Ppi/SecPlatformInformation2.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/BaseLib.h>
#include <Library/CpuLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/MtrrLib.h>
#include <Library/LocalApicLib.h>
#include <Library/UefiCpuLib.h>
#include <Library/UefiLib.h>
#include <Library/CpuExceptionHandlerLib.h>
#include <Library/HobLib.h>
#include <Library/ReportStatusCodeLib.h>
#include <Library/MpInitLib.h>
#include <Library/TimerLib.h>
#include <Guid/IdleLoopEvent.h>
#include <Guid/VectorHandoffTable.h>
#define HEAP_GUARD_NONSTOP_MODE \
((PcdGet8 (PcdHeapGuardPropertyMask) & (BIT6|BIT4|BIT1|BIT0)) > BIT6)
#define NULL_DETECTION_NONSTOP_MODE \
((PcdGet8 (PcdNullPointerDetectionPropertyMask) & (BIT6|BIT0)) > BIT6)
/**
Flush CPU data cache. If the instruction cache is fully coherent
with all DMA operations then function can just return EFI_SUCCESS.
@param This Protocol instance structure
@param Start Physical address to start flushing from.
@param Length Number of bytes to flush. Round up to chipset
granularity.
@param FlushType Specifies the type of flush operation to perform.
@retval EFI_SUCCESS If cache was flushed
@retval EFI_UNSUPPORTED If flush type is not supported.
@retval EFI_DEVICE_ERROR If requested range could not be flushed.
**/
EFI_STATUS
EFIAPI
CpuFlushCpuDataCache (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS Start,
IN UINT64 Length,
IN EFI_CPU_FLUSH_TYPE FlushType
);
/**
Enables CPU interrupts.
@param This Protocol instance structure
@retval EFI_SUCCESS If interrupts were enabled in the CPU
@retval EFI_DEVICE_ERROR If interrupts could not be enabled on the CPU.
**/
EFI_STATUS
EFIAPI
CpuEnableInterrupt (
IN EFI_CPU_ARCH_PROTOCOL *This
);
/**
Disables CPU interrupts.
@param This Protocol instance structure
@retval EFI_SUCCESS If interrupts were disabled in the CPU.
@retval EFI_DEVICE_ERROR If interrupts could not be disabled on the CPU.
**/
EFI_STATUS
EFIAPI
CpuDisableInterrupt (
IN EFI_CPU_ARCH_PROTOCOL *This
);
/**
Return the state of interrupts.
@param This Protocol instance structure
@param State Pointer to the CPU's current interrupt state
@retval EFI_SUCCESS If interrupts were disabled in the CPU.
@retval EFI_INVALID_PARAMETER State is NULL.
**/
EFI_STATUS
EFIAPI
CpuGetInterruptState (
IN EFI_CPU_ARCH_PROTOCOL *This,
OUT BOOLEAN *State
);
/**
Generates an INIT to the CPU.
@param This Protocol instance structure
@param InitType Type of CPU INIT to perform
@retval EFI_SUCCESS If CPU INIT occurred. This value should never be
seen.
@retval EFI_DEVICE_ERROR If CPU INIT failed.
@retval EFI_UNSUPPORTED Requested type of CPU INIT not supported.
**/
EFI_STATUS
EFIAPI
CpuInit (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_CPU_INIT_TYPE InitType
);
/**
Registers a function to be called from the CPU interrupt handler.
@param This Protocol instance structure
@param InterruptType Defines which interrupt to hook. IA-32
valid range is 0x00 through 0xFF
@param InterruptHandler A pointer to a function of type
EFI_CPU_INTERRUPT_HANDLER that is called
when a processor interrupt occurs. A null
pointer is an error condition.
@retval EFI_SUCCESS If handler installed or uninstalled.
@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler
for InterruptType was previously installed.
@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for
InterruptType was not previously installed.
@retval EFI_UNSUPPORTED The interrupt specified by InterruptType
is not supported.
**/
EFI_STATUS
EFIAPI
CpuRegisterInterruptHandler (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
);
/**
Returns a timer value from one of the CPU's internal timers. There is no
inherent time interval between ticks but is a function of the CPU frequency.
@param This - Protocol instance structure.
@param TimerIndex - Specifies which CPU timer is requested.
@param TimerValue - Pointer to the returned timer value.
@param TimerPeriod - A pointer to the amount of time that passes
in femtoseconds (10-15) for each increment
of TimerValue. If TimerValue does not
increment at a predictable rate, then 0 is
returned. The amount of time that has
passed between two calls to GetTimerValue()
can be calculated with the formula
(TimerValue2 - TimerValue1) * TimerPeriod.
This parameter is optional and may be NULL.
@retval EFI_SUCCESS - If the CPU timer count was returned.
@retval EFI_UNSUPPORTED - If the CPU does not have any readable timers.
@retval EFI_DEVICE_ERROR - If an error occurred while reading the timer.
@retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue is NULL.
**/
EFI_STATUS
EFIAPI
CpuGetTimerValue (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN UINT32 TimerIndex,
OUT UINT64 *TimerValue,
OUT UINT64 *TimerPeriod OPTIONAL
);
/**
Set memory cacheability attributes for given range of memory.
@param This Protocol instance structure
@param BaseAddress Specifies the start address of the
memory range
@param Length Specifies the length of the memory range
@param Attributes The memory cacheability for the memory range
@retval EFI_SUCCESS If the cacheability of that memory range is
set successfully
@retval EFI_UNSUPPORTED If the desired operation cannot be done
@retval EFI_INVALID_PARAMETER The input parameter is not correct,
such as Length = 0
**/
EFI_STATUS
EFIAPI
CpuSetMemoryAttributes (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINT64 Length,
IN UINT64 Attributes
);
/**
Initialize Global Descriptor Table.
**/
VOID
InitGlobalDescriptorTable (
VOID
);
/**
Sets the code selector (CS).
@param Selector Value of code selector.
**/
VOID
EFIAPI
SetCodeSelector (
UINT16 Selector
);
/**
Sets the data selector (DS).
@param Selector Value of data selector.
**/
VOID
EFIAPI
SetDataSelectors (
UINT16 Selector
);
/**
Update GCD memory space attributes according to current page table setup.
**/
VOID
RefreshGcdMemoryAttributesFromPaging (
VOID
);
/**
Special handler for #DB exception, which will restore the page attributes
(not-present). It should work with #PF handler which will set pages to
'present'.
@param ExceptionType Exception type.
@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
**/
VOID
EFIAPI
DebugExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
Special handler for #PF exception, which will set the pages which caused
#PF to be 'present'. The attribute of those pages should be restored in
the subsequent #DB handler.
@param ExceptionType Exception type.
@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
**/
VOID
EFIAPI
PageFaultExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext
);
extern BOOLEAN mIsAllocatingPageTable;
extern UINTN mNumberOfProcessors;
#endif
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