diff options
Diffstat (limited to 'Chipset/SB/CSM/LegacyInterrupt/LegacyInterrupt.c')
| -rw-r--r-- | Chipset/SB/CSM/LegacyInterrupt/LegacyInterrupt.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/Chipset/SB/CSM/LegacyInterrupt/LegacyInterrupt.c b/Chipset/SB/CSM/LegacyInterrupt/LegacyInterrupt.c new file mode 100644 index 0000000..6177f8a --- /dev/null +++ b/Chipset/SB/CSM/LegacyInterrupt/LegacyInterrupt.c @@ -0,0 +1,310 @@ +//********************************************************************** +//********************************************************************** +//** ** +//** (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 ** +//** ** +//********************************************************************** +//********************************************************************** |