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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/CSM/Generic/Chipset/SouthBridge/LegacyInterrupt.c 14 7/28/10 2:46p Olegi $
//
// $Revision: 14 $
//
// $Date: 7/28/10 2:46p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/CSM/Generic/Chipset/SouthBridge/LegacyInterrupt.c $
//
// 14 7/28/10 2:46p Olegi
//
// 13 1/12/10 11:51a Olegi
// Copyright message updated.
//
// 12 10/14/09 12:26p Krishnakumarg
// CloseEvent funtion used instead of a static variable in callback
// routines - EIP 27065
//
// 11 4/27/07 5:43p Olegi
//
// 10 4/27/07 5:39p Olegi
//
// 9 4/27/07 5:21p Olegi
// CSM.CHM preparations.
//
// 8 10/13/06 12:32a Felixp
// UEFI2.0 compliance: use CreateReadyToBootEvent instead of
// CreateEvent(READY_TO_BOOT)
//
// 7 5/27/05 4:24p Markw
// Added Boot Script.
//
// 6 4/04/05 4:19p Sivagarn
// Updated to latest template format
//
// 2 2/22/05 10:00a Sivagarn
// - Updated to latest labeled CSM & Core
//
// 5 1/18/05 3:22p Felixp
// PrintDebugMessage renamed to Trace
//
// 4 12/09/04 10:59a Olegi
//
// 3 12/06/04 9:37a Olegi
// Added interrupt router registers' buffering.
//
// 2 12/03/04 9:55a Olegi
//
// 1 10/26/04 9:48a Olegi
//
// 3 8/31/04 5:46p Markw
// Fixed bug. Using wrong value to index PirqReg.
//
// 2 8/25/04 4:58p Markw
// Added comments.
//
// 1 8/25/04 3:01p Markw
//
// 1 8/13/04 2:39p Markw
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: 8259InterruptController.c
//
// Description: Initialize and provide a protocol to set PIRQ values
//
//<AMI_FHDR_END>
//**********************************************************************
#include <AmiDxeLib.h>
#include <Protocol\PciRootBridgeIo.h>
#include <Protocol\LegacyInterrupt.h>
#include <Protocol\BootScriptSave.h>
extern UINT8 bMaxPIRQ;
extern UINT8 bRouterBus;
extern UINT8 bRouterDevice;
extern UINT8 bRouterFunction;
EFI_GUID gEfiLegacyInterruptProtocolGuid = EFI_LEGACY_INTERRUPT_PROTOCOL_GUID;
EFI_GUID gEfiPciRootBridgeIoProtocolGuid = EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID;
EFI_GUID gEfiBootScriptSaveGuid = EFI_BOOT_SCRIPT_SAVE_GUID;
EFI_EVENT gEvtBootScript;
extern
EFI_STATUS
SBGen_InitializeRouterRegisters (
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *gPciRootBridgeIo);
extern
EFI_STATUS
SBGen_ReadPirq (
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
IN UINT8 PirqNumber,
OUT UINT8 *PirqData);
EFI_STATUS
SBGen_WritePirq(
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
IN UINT8 PirqNumber,
IN UINT8 PirqData);
EFI_STATUS SBGen_WriteBootScript(
IN EFI_BOOT_SCRIPT_SAVE_PROTOCOL *BootScriptSave
);
//**********************************************************************
//<AMI_PHDR_START>
//
// Procedure: GetNumberPirqs
//
// Description: Return number of supported Pirqs.
//
// Input:
// IN EFI_LEGACY_INTERRUPT_PROTOCOL *This
// OUT UINT8 *NumberPirqs
//
// Output:
// Status of the operation
//
// Notes:
// Here is the control flow of this function:
// 1. Set NumberPirqs to number of supported Pirqs.
// 2. Return EFI_SUCCESS;
//
//<AMI_PHDR_END>
//**********************************************************************
EFI_STATUS GetNumberPirqs(
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
OUT UINT8 *NumberPirqs
)
{
*NumberPirqs = bMaxPIRQ;
return EFI_SUCCESS;
}
//**********************************************************************
//<AMI_PHDR_START>
//
// Procedure: GetLocation
//
// Description: Return location of device controlling the Pirqs.
//
// Input:
// IN EFI_LEGACY_INTERRUPT_PROTOCOL *This
// OUT UINT8 *Bus
// OUT UINT8 *Device
// OUT UINT8 *Function
//
// Output:
// Status of the operation
//
// Notes:
// Here is the control flow of this function:
// 1. Set Bus, Device, and Function.
// 2. Return EFI_SUCCESS.
//
//<AMI_PHDR_END>
//**********************************************************************
EFI_STATUS GetLocation(
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
OUT UINT8 *Bus,
OUT UINT8 *Device,
OUT UINT8 *Function
)
{
*Bus = bRouterBus;
*Device = bRouterDevice;
*Function = bRouterFunction;
return EFI_SUCCESS;
}
EFI_LEGACY_INTERRUPT_PROTOCOL gEfiLegacyInterruptProtocol =
{
GetNumberPirqs, GetLocation,
SBGen_ReadPirq, SBGen_WritePirq
};
//**********************************************************************
//<AMI_PHDR_START>
//
// Procedure: CallbackBootScript
//
// Description: Saves the PIRQ registers to Boot Script
//
// Input:
// IN EFI_EVENT Event
// IN VOID *Context
// Output:
// None
//
//<AMI_PHDR_END>
//**********************************************************************
VOID CallbackBootScript(IN EFI_EVENT Event, IN VOID *Context)
{
EFI_BOOT_SCRIPT_SAVE_PROTOCOL *BootScriptSave;
EFI_STATUS Status;
Status = pBS->LocateProtocol(
&gEfiBootScriptSaveGuid,
NULL,
&BootScriptSave
);
if (EFI_ERROR(Status)) return;
SBGen_WriteBootScript(BootScriptSave);
//
//Kill the Event
//
pBS->CloseEvent(Event);
}
//**********************************************************************
//<AMI_PHDR_START>
//
// Procedure: InitializeLegacyInterrupt
//
// Description: Install Legacy Interrupt Protocol.
//
// Input:
// IN EFI_HANDLE ImageHandle
// IN EFI_SYSTEM_TABLE *SystemTable
//
// Output:
// EFI_STATUS
//
// Notes:
// Here is the control flow of this function:
// 1. Intialize Library.
// 2. Locate PciRootBridgeIo. If error, return error.
// 3. Install Legacy Interrupt protocol.
// 4. Return its Status.
//<AMI_PHDR_END>
//**********************************************************************
EFI_STATUS InitializeLegacyInterrupt(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *gPciRootBridgeIo;
InitAmiLib(ImageHandle, SystemTable);
Status = pBS->LocateProtocol(
&gEfiPciRootBridgeIoProtocolGuid,
NULL,
&gPciRootBridgeIo
);
if (EFI_ERROR(Status)) return Status;
//Create event for boot script
Status = CreateReadyToBootEvent(
TPL_NOTIFY,
CallbackBootScript,
NULL,
&gEvtBootScript
);
ASSERT_EFI_ERROR(Status);
//
// Initialize router registers buffer
//
Status = SBGen_InitializeRouterRegisters (gPciRootBridgeIo);
if (EFI_ERROR(Status)) return Status;
return pBS->InstallMultipleProtocolInterfaces(
&ImageHandle,
&gEfiLegacyInterruptProtocolGuid, &gEfiLegacyInterruptProtocol,
NULL
);
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
