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201 lines
7.6 KiB
C
201 lines
7.6 KiB
C
/** @file
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CPU Exception library provides the default CPU interrupt/exception handler.
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It also provides capability to register user interrupt/exception handler.
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Copyright (c) 2012 - 2018, 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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#ifndef __CPU_EXCEPTION_HANDLER_LIB_H__
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#define __CPU_EXCEPTION_HANDLER_LIB_H__
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#include <Ppi/VectorHandoffInfo.h>
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#include <Protocol/Cpu.h>
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#define CPU_EXCEPTION_INIT_DATA_REV 1
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typedef union {
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struct {
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//
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// Revision number of this structure.
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//
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UINT32 Revision;
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//
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// The address of top of known good stack reserved for *ALL* exceptions
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// listed in field StackSwitchExceptions.
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//
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UINTN KnownGoodStackTop;
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//
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// The size of known good stack for *ONE* exception only.
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//
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UINTN KnownGoodStackSize;
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//
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// Buffer of exception vector list for stack switch.
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//
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UINT8 *StackSwitchExceptions;
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//
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// Number of exception vectors in StackSwitchExceptions.
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//
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UINTN StackSwitchExceptionNumber;
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//
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// Buffer of IDT table. It must be type of IA32_IDT_GATE_DESCRIPTOR.
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// Normally there's no need to change IDT table size.
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//
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VOID *IdtTable;
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//
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// Size of buffer for IdtTable.
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//
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UINTN IdtTableSize;
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//
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// Buffer of GDT table. It must be type of IA32_SEGMENT_DESCRIPTOR.
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//
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VOID *GdtTable;
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//
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// Size of buffer for GdtTable.
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//
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UINTN GdtTableSize;
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//
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// Pointer to start address of descriptor of exception task gate in the
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// GDT table. It must be type of IA32_TSS_DESCRIPTOR.
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//
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VOID *ExceptionTssDesc;
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//
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// Size of buffer for ExceptionTssDesc.
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//
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UINTN ExceptionTssDescSize;
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//
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// Buffer of task-state segment for exceptions. It must be type of
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// IA32_TASK_STATE_SEGMENT.
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//
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VOID *ExceptionTss;
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//
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// Size of buffer for ExceptionTss.
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//
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UINTN ExceptionTssSize;
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//
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// Flag to indicate if default handlers should be initialized or not.
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//
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BOOLEAN InitDefaultHandlers;
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} Ia32, X64;
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} CPU_EXCEPTION_INIT_DATA;
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/**
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Initializes all CPU exceptions entries and provides the default exception handlers.
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Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
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persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
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If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
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If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
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@param[in] VectorInfo Pointer to reserved vector list.
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@retval EFI_SUCCESS CPU Exception Entries have been successfully initialized
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with default exception handlers.
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@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
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@retval EFI_UNSUPPORTED This function is not supported.
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**/
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EFI_STATUS
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EFIAPI
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InitializeCpuExceptionHandlers (
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IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
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);
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/**
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Initializes all CPU exceptions entries with optional extra initializations.
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By default, this method should include all functionalities implemented by
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InitializeCpuExceptionHandlers(), plus extra initialization works, if any.
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This could be done by calling InitializeCpuExceptionHandlers() directly
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in this method besides the extra works.
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InitData is optional and its use and content are processor arch dependent.
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The typical usage of it is to convey resources which have to be reserved
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elsewhere and are necessary for the extra initializations of exception.
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@param[in] VectorInfo Pointer to reserved vector list.
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@param[in] InitData Pointer to data optional for extra initializations
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of exception.
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@retval EFI_SUCCESS The exceptions have been successfully
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initialized.
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@retval EFI_INVALID_PARAMETER VectorInfo or InitData contains invalid
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content.
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@retval EFI_UNSUPPORTED This function is not supported.
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**/
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EFI_STATUS
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EFIAPI
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InitializeCpuExceptionHandlersEx (
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IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL,
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IN CPU_EXCEPTION_INIT_DATA *InitData OPTIONAL
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);
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/**
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Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
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Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
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persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
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If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
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If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
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@param[in] VectorInfo Pointer to reserved vector list.
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@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
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with default interrupt/exception handlers.
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@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
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@retval EFI_UNSUPPORTED This function is not supported.
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**/
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EFI_STATUS
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EFIAPI
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InitializeCpuInterruptHandlers (
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IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
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);
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/**
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Registers a function to be called from the processor interrupt handler.
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This function registers and enables the handler specified by InterruptHandler for a processor
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interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
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handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
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The installed handler is called once for each processor interrupt or exception.
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NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
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InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
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@param[in] InterruptType Defines which interrupt or exception to hook.
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@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
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when a processor interrupt occurs. If this parameter is NULL, then the handler
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will be uninstalled.
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@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
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@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was
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previously installed.
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@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not
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previously installed.
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@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported,
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or this function is not supported.
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**/
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EFI_STATUS
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EFIAPI
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RegisterCpuInterruptHandler (
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IN EFI_EXCEPTION_TYPE InterruptType,
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IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
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);
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/**
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Display processor context.
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@param[in] ExceptionType Exception type.
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@param[in] SystemContext Processor context to be display.
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**/
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VOID
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EFIAPI
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DumpCpuContext (
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN EFI_SYSTEM_CONTEXT SystemContext
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);
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#endif
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