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|
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//*************************************************************************
// $Header: /Alaska/BIN/Chipset/Intel/SouthBridge/LynxPoint/Intel Pch SB Chipset/SmmChildDispatcher/SmmChildDispatchMain.c 2 4/25/12 9:35a Victortu $
//
// $Revision: 2 $
//
// $Date: 4/25/12 9:35a $
//*************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/BIN/Chipset/Intel/SouthBridge/LynxPoint/Intel Pch SB Chipset/SmmChildDispatcher/SmmChildDispatchMain.c $
//
// 2 4/25/12 9:35a Victortu
// [TAG] None
// [Category] Improvement
// [Description] Reprogram SMM ChildDispatcher drivers.
// [Files] SmiHandlerGeneric.c; SmiHandlerPorting.c;
// SmiHandlerGeneric2.c; SmmChildDispatch2Main.c; SmmChildDispatcher2.mak;
// SmmChildDispatcher2.sdl; SmmChildDispatch.h; SmmChildDispatchMain.c;
// SmmChildDispatchProtocol.c; SmmChildDispatcher.dxs;
// PchSmiDispatcher.sdl
//
// 1 2/08/12 8:27a Yurenlai
// Intel Lynx Point/SB eChipset initially releases.
//
//*************************************************************************
//<AMI_FHDR_START>
//
// Name: SmmChildDispatchMain.c
//
// Description: This file contains implementation of module entry point,
// generic RegisterHandler and UnregisterHandler routines
// and main dispatcher loop.
//
//<AMI_FHDR_END>
//*************************************************************************
//---------------------------------------------------------------------------
// Include(s)
//---------------------------------------------------------------------------
#include <AmiCspLib.h>
#include <Smm.h>
#include "SmmChildDispatch.h"
#include "SmmChildDispatchProtocol.h"
//---------------------------------------------------------------------------
// Constant, Macro and Type Definition(s)
//---------------------------------------------------------------------------
// Constant Definition(s)
#define SMI_HANDLER_SIGNATURE 0x48494d53 //SMIH
// Macro Definition(s)
// Type Definition(s)
// Function Prototype(s)
//---------------------------------------------------------------------------
// Variable and External Declaration(s)
//---------------------------------------------------------------------------
// Variable Declaration(s)
EFI_SMM_SMI_CONTEXT SmiContext;
SB_ASL_BUFFER *gSbAslBufPtr = NULL;
// GUID Definition(s)
// Protocol Definition(s)
// External Declaration(s)
extern EFI_SMM_SYSTEM_TABLE *pSmst;
extern SMM_CHILD_DISPATCHER SmmHandler[];
#if INTEL_RC_SMI_DISPATCHER_SUPPORT == 0
extern EFI_SMM_SW_DISPATCH_PROTOCOL gEfiSmmSwDispatchProtocol;
extern EFI_SMM_SX_DISPATCH_PROTOCOL gEfiSmmSxDispatchProtocol;
extern EFI_SMM_PERIODIC_TIMER_DISPATCH_PROTOCOL gEfiSmmPeriodicTimerDispatchProtocol;
extern EFI_SMM_USB_DISPATCH_PROTOCOL gEfiSmmUsbDispatchProtocol;
extern EFI_SMM_GPI_DISPATCH_PROTOCOL gEfiSmmGpiDispatchProtocol;
#endif
extern EFI_SMM_STANDBY_BUTTON_DISPATCH_PROTOCOL gEfiSmmStandbyButtonDispatchProtocol;
#if INTEL_RC_SMI_DISPATCHER_SUPPORT == 0
extern EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL gEfiSmmPowerButonDispatchProtocol;
extern EFI_SMM_TCO_DISPATCH_PROTOCOL gEfiSmmTcoDispatchProtocol;
extern EFI_SMM_IO_TRAP_DISPATCH_PROTOCOL gEfiSmmIoTrapDispatchProtocol;
#endif
// Function Definition(s)
#if (INTEL_RC_SMI_DISPATCHER_SUPPORT == 1) && (PI_0_9_CHILD_DISPATCHER_SUPPORT == 1)
static BOOLEAN PowerBtnSmi = FALSE;
VOID PowerButtonActivated(
IN EFI_HANDLE DispatchHandle,
IN EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT *DispatchContext
)
{
PowerBtnSmi = TRUE;
}
VOID AfterChildDispatcher(VOID)
{
if (PowerBtnSmi)
{
PButtonSmiClear();
SBLib_Shutdown();
PowerBtnSmi = FALSE;
}
}
VOID InstallAfterChildDispatcher(VOID)
{
EFI_STATUS Status;
EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL *PowerButton;
EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT DispatchContext = {PowerButtonEntry};
EFI_HANDLE hPowerButton;
Status = pBS->LocateProtocol(
&gEfiSmmPowerButtonDispatchProtocolGuid,
NULL,
&PowerButton);
if (!EFI_ERROR(Status))
{
Status = PowerButton->Register(
PowerButton,
PowerButtonActivated,
&DispatchContext,
&hPowerButton);
ASSERT_EFI_ERROR(Status);
}
}
#endif
//---------------------------------------------------------------------------
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: RegisterHandler
//
// Description: This function registers SMI handler and returns registered
// handle
//
// Input: Type - Type of SMI handler
// Function - Pointer to callback function
// *Context - Pointer to callback context
// ContextSize - Callback context size
// *Handle - Pointer to store registered handle
//
// Output: EFI_STATUS
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS RegisterHandler (
IN EFI_SMM_SMI Type,
IN VOID *Function,
IN VOID *Context,
IN UINTN ContextSize,
OUT EFI_HANDLE *Handle )
{
EFI_STATUS Status;
HANDLER_LINK *HandlerLink;
Status = SmmHandler[Type].HandlerProtocol.VerifyContext( Context );
if(EFI_ERROR(Status)) return Status;
Status = pSmst->SmmAllocatePool( 0,
sizeof(HANDLER_LINK) + ContextSize - 1,
&HandlerLink );
if(EFI_ERROR(Status)) return Status;
HandlerLink->Callback = Function;
HandlerLink->Signature = SMI_HANDLER_SIGNATURE;
MemCpy( HandlerLink->Context, Context, ContextSize );
DListAdd(&(SmmHandler[Type].RegisteredCallbacks), (DLINK *)HandlerLink);
SmmHandler[Type].HandlerProtocol.AddHandler( HandlerLink->Context );
*Handle = HandlerLink;
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: FindHandler
//
// Description: This function find the handle in the Type of SMI hander list.
//
// Input: Type - Type of SMI handler
// Handle - Handle of found handler
//
// Output: EFI_STATUS
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS FindHandler(
IN EFI_SMM_SMI Type,
IN EFI_HANDLE Handle)
{
HANDLER_LINK *HandlerLink = (HANDLER_LINK *)Handle;
HANDLER_LINK *NodeLink = NULL;
if (HandlerLink->Signature != SMI_HANDLER_SIGNATURE)
return EFI_INVALID_PARAMETER;
if (SmmHandler[Type].RegisteredCallbacks.Size <= 0)
return EFI_UNSUPPORTED;
NodeLink = (HANDLER_LINK *)SmmHandler[Type].RegisteredCallbacks.pHead;
for (; NodeLink != NULL; NodeLink = (HANDLER_LINK *)NodeLink->Link.pNext)
{
if (NodeLink == HandlerLink)
return EFI_SUCCESS;
}
return EFI_UNSUPPORTED;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: UnregisterHandler
//
// Description: This function unregisters SMI handler with given handle
//
// Input: Type - Type of SMI handler
// Handle - Handle of registered handler
//
// Output: EFI_STATUS
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS UnregisterHandler (
IN EFI_SMM_SMI Type,
IN EFI_HANDLE Handle )
{
EFI_STATUS Status;
HANDLER_LINK *HandlerLink = (HANDLER_LINK *)Handle;
Status = FindHandler(Type, Handle);
if (Status == EFI_SUCCESS)
{
SmmHandler[Type].HandlerProtocol.RemoveHandler( HandlerLink->Context );
DListDelete( &(SmmHandler[Type].RegisteredCallbacks), (DLINK *)HandlerLink );
pSmst->SmmFreePool( HandlerLink );
}
return Status;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: ChildDispatcher
//
// Description: This function implements main SMI dispatcher loop
//
// Input: SmmImageHandle - SMM Image handle
// *CommunicationBuffer - Pointer to optional communication
// buffer
// *SourceSize - Pointer to size of communication
// buffer
//
// Output: EFI_STATUS
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS ChildDispatcher (
IN EFI_HANDLE SmmImageHandle,
IN OUT VOID *CommunicationBuffer OPTIONAL,
IN OUT UINTN *SourceSize OPTIONAL )
{
UINT32 Index;
BOOLEAN HandledSmi;
do {
HandledSmi = FALSE;
for (Index = EfiSmmStandbyButtonSmi; Index < EfiSmmMaxSmi; Index++)
{
if (SmmHandler[Index].HandlerProtocol.GetContext != NULL &&
SmmHandler[Index].HandlerProtocol.GetContext())
{
SmmHandler[Index].HandlerProtocol.DispatchSmi();
HandledSmi = TRUE;
}
}
} while (HandledSmi);
SbSmiWorkaround();
#if (INTEL_RC_SMI_DISPATCHER_SUPPORT == 1) && (PI_0_9_CHILD_DISPATCHER_SUPPORT == 1)
AfterChildDispatcher();
#endif
return EFI_HANDLER_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: InSmmFunction
//
// Description: This function initializes Child dispatcher in SMM mode
//
// Input: ImageHandle - Image handle
// *SystemTable - Pointer to system table
//
// Output: EFI_STATUS
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS InSmmFunction(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable )
{
EFI_STATUS Status;
EFI_GUID SbAslBufPtrGuid = SB_ASL_BUFFER_PTR_GUID;
CHAR16 SbAslBufPtrVar[] = SB_ASL_BUFFER_PTR_VARIABLE;
EFI_HANDLE Handle = NULL;
UINTN VarSize = sizeof(UINT32);
UINT32 SbAslBufPtr;
ClearAllSmi();
Status = pRS->GetVariable( SbAslBufPtrVar,
&SbAslBufPtrGuid,
NULL,
&VarSize,
&SbAslBufPtr );
if (!EFI_ERROR(Status)) gSbAslBufPtr = (SB_ASL_BUFFER *)SbAslBufPtr;
// Install Protocols
Status = pBS->InstallMultipleProtocolInterfaces(
&Handle,
#if INTEL_RC_SMI_DISPATCHER_SUPPORT == 0
&gEfiSmmSwDispatchProtocolGuid,
&gEfiSmmSwDispatchProtocol,
&gEfiSmmSxDispatchProtocolGuid,
&gEfiSmmSxDispatchProtocol,
&gEfiSmmPeriodicTimerDispatchProtocolGuid,
&gEfiSmmPeriodicTimerDispatchProtocol,
&gEfiSmmUsbDispatchProtocolGuid,
&gEfiSmmUsbDispatchProtocol,
&gEfiSmmGpiDispatchProtocolGuid,
&gEfiSmmGpiDispatchProtocol,
#endif
&gEfiSmmStandbyButtonDispatchProtocolGuid,
&gEfiSmmStandbyButtonDispatchProtocol,
#if INTEL_RC_SMI_DISPATCHER_SUPPORT == 0
&gEfiSmmPowerButtonDispatchProtocolGuid,
&gEfiSmmPowerButonDispatchProtocol,
&gEfiSmmTcoDispatchProtocolGuid,
&gEfiSmmTcoDispatchProtocol,
&gEfiSmmIoTrapDispatchProtocolGuid,
&gEfiSmmIoTrapDispatchProtocol,
&gEfiSmmBiosWriteDispatchProtocolGuid,
&gEfiSmmBiosWriteDispatchProtocol,
#endif
NULL );
ASSERT_EFI_ERROR(Status);
Status = pSmmBase->RegisterCallback( pSmmBase,
ImageHandle,
ChildDispatcher,
TRUE,
FALSE );
ASSERT_EFI_ERROR(Status);
#if (INTEL_RC_SMI_DISPATCHER_SUPPORT == 1) && (PI_0_9_CHILD_DISPATCHER_SUPPORT == 1)
InstallAfterChildDispatcher();
#endif
return Status;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: SmmChildDispatchEntryPoint
//
// Description: SMM Child Dispatcher module entry point
//
// Input: ImageHandle - Image handle
// *SystemTable - Pointer to system table
//
// Output: EFI_STATUS
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS SmmChildDispatchEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable )
{
InitAmiLib( ImageHandle,SystemTable );
return InitSmmHandler( ImageHandle, SystemTable, InSmmFunction, NULL );
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
