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/** @file
X64 specific debug support macros, typedefs and prototypes.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _PLDEBUG_SUPPORT_H_
#define _PLDEBUG_SUPPORT_H_
#include <Uefi.h>
#include <Protocol/DebugSupport.h>
#include <Protocol/LoadedImage.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#define NUM_IDT_ENTRIES 0x78
#define SYSTEM_TIMER_VECTOR 0x68
#define VECTOR_ENTRY_PAGES 1
#define COPY_DESCRIPTOR(Dest, Src) CopyMem ((Dest), (Src), sizeof (DESCRIPTOR))
#define READ_IDT(Vector, Dest) COPY_DESCRIPTOR ((Dest), &((GetIdtr ())[(Vector)]))
#define WRITE_IDT(Vector, Src) COPY_DESCRIPTOR (&((GetIdtr ())[(Vector)]), (Src))
#define COMPARE_DESCRIPTOR(Desc1, Desc2) CompareMem ((Desc1), (Desc2), sizeof (DESCRIPTOR))
#define EFI_ISA IsaX64
#define FF_FXSR (1 << 24)
typedef struct {
UINT64 Low;
UINT64 High;
} DESCRIPTOR;
typedef
VOID
(*DEBUG_PROC) (
VOID
);
typedef struct {
DESCRIPTOR OrigDesc;
DEBUG_PROC OrigVector;
DESCRIPTOR NewDesc;
DEBUG_PROC StubEntry;
VOID (*RegisteredCallback) ();
} IDT_ENTRY;
extern EFI_SYSTEM_CONTEXT SystemContext;
extern UINT8 InterruptEntryStub[];
extern UINT32 StubSize;
extern VOID (*OrigVector) (VOID);
/**
Generic IDT entry.
**/
VOID
CommonIdtEntry (
VOID
);
/**
Check whether FXSTOR is supported
@retval TRUE FXSTOR is supported.
@retval FALSE FXSTOR is not supported.
**/
BOOLEAN
FxStorSupport (
VOID
);
/**
Return the physical address of IDTR.
@return The physical address of IDTR.
**/
DESCRIPTOR *
GetIdtr (
VOID
);
/**
Encodes an IDT descriptor with the given physical address.
@param DestDesc The IDT descriptor address.
@param Vecotr The interrupt vector entry.
**/
VOID
Vect2Desc (
DESCRIPTOR * DestDesc,
VOID (*Vector) (VOID)
);
/**
Programs interrupt flag to the requested state and returns previous
state.
@param NewState New interrupt status.
@retval TRUE Old interrupt status is TRUE.
@retval FALSE Old interrupt status is FALSE
**/
BOOLEAN
WriteInterruptFlag (
BOOLEAN NewState
);
/**
Initializes driver's handler registration databas.
This code executes in boot services context
Must be public because it's referenced from DebugSupport.c
@retval EFI_UNSUPPORTED If x64 processor does not support FXSTOR/FXRSTOR instructions,
the context save will fail, so these processor's are not supported.
@retval EFI_OUT_OF_RESOURCES Fails to allocate memory.
@retval EFI_SUCCESS Initializes successfully.
**/
EFI_STATUS
PlInitializeDebugSupportDriver (
VOID
);
/**
This is the callback that is written to the LoadedImage protocol instance
on the image handle. It uninstalls all registered handlers and frees all entry
stub memory.
@param ImageHandle The firmware allocated handle for the EFI image.
@retval EFI_SUCCESS Always.
**/
EFI_STATUS
EFIAPI
PlUnloadDebugSupportDriver (
IN EFI_HANDLE ImageHandle
);
/**
This is a DebugSupport protocol member function, hard
coded to support only 1 processor for now.
@param This The DebugSupport instance
@param MaxProcessorIndex The maximuim supported processor index
@retval EFI_SUCCESS Always returned with **MaxProcessorIndex set to 0.
**/
EFI_STATUS
EFIAPI
GetMaximumProcessorIndex (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
OUT UINTN *MaxProcessorIndex
);
/**
DebugSupport protocol member function.
@param This The DebugSupport instance
@param ProcessorIndex Which processor the callback applies to.
@param PeriodicCallback Callback function
@retval EFI_SUCCESS Indicates the callback was registered.
@retval others Callback was not registered.
**/
EFI_STATUS
EFIAPI
RegisterPeriodicCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
);
/**
DebugSupport protocol member function.
This code executes in boot services context.
@param This The DebugSupport instance
@param ProcessorIndex Which processor the callback applies to.
@param NewCallback Callback function
@param ExceptionType Which exception to hook
@retval EFI_SUCCESS Indicates the callback was registered.
@retval others Callback was not registered.
**/
EFI_STATUS
EFIAPI
RegisterExceptionCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN EFI_EXCEPTION_CALLBACK NewCallback,
IN EFI_EXCEPTION_TYPE ExceptionType
);
/**
DebugSupport protocol member function. Calls assembly routine to flush cache.
@param This The DebugSupport instance
@param ProcessorIndex Which processor the callback applies to.
@param Start Physical base of the memory range to be invalidated
@param Length mininum number of bytes in instruction cache to invalidate
@retval EFI_SUCCESS Always returned.
**/
EFI_STATUS
EFIAPI
InvalidateInstructionCache (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
IN UINTN ProcessorIndex,
IN VOID *Start,
IN UINT64 Length
);
#endif
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