diff options
Diffstat (limited to 'Chipset/SB/PchWrap/SmBusMemoryDown/SmBusMemoryDown.c')
| -rw-r--r-- | Chipset/SB/PchWrap/SmBusMemoryDown/SmBusMemoryDown.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/Chipset/SB/PchWrap/SmBusMemoryDown/SmBusMemoryDown.c b/Chipset/SB/PchWrap/SmBusMemoryDown/SmBusMemoryDown.c new file mode 100644 index 0000000..8e081d1 --- /dev/null +++ b/Chipset/SB/PchWrap/SmBusMemoryDown/SmBusMemoryDown.c @@ -0,0 +1,252 @@ +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2012, 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/PchWrap/SmBusMemoryDown.c 1 12/11/12 1:09a Scottyang $ +// +// $Date: 12/11/12 1:09a $ +//************************************************************************* +// Revision History +// ---------------- +// $Log: +// +//************************************************************************* +//<AMI_FHDR_START> +// +// Name: SmBusMemoryDown.c +// +// Description: SmBus support MemoryDown functions implementation +// +//<AMI_FHDR_END> +//************************************************************************* + +#include <efi.h> +#include <AmiDxeLib.h> +#include <AmiCspLib.h> +#include <Protocol\SmBus.h> + +EFI_SMBUS_HC_PROTOCOL *SmBusProtocol = NULL; +static EFI_SMBUS_HC_EXECUTE_OPERATION PchSmBusExecute = NULL; +EFI_EVENT gSmBusMemoryDownEvent; +VOID *gSmBusMemoryDownEventReg; +UINT8 IsRunMemoryDown = 0; +EFI_GUID gEfiSMBusProtocolGuid = EFI_SMBUS_HC_PROTOCOL_GUID; + +#ifndef AMI_OVERRIDE_FOR_MEMORY_DOWN +#if defined(NB_OEM_DIMM1_STATUS) && (NB_OEM_DIMM1_STATUS == 0x02) +static UINT8 Dimm1SpdTbl[] = NB_OEM_DIMM1_SPD_DATA; +#endif +#if defined(NB_OEM_DIMM2_STATUS) && (NB_OEM_DIMM2_STATUS == 0x02) +static UINT8 Dimm2SpdTbl[] = NB_OEM_DIMM2_SPD_DATA; +#endif +#if defined(NB_OEM_DIMM3_STATUS) && (NB_OEM_DIMM3_STATUS == 0x02) +static UINT8 Dimm3SpdTbl[] = NB_OEM_DIMM3_SPD_DATA; +#endif +#if defined(NB_OEM_DIMM4_STATUS) && (NB_OEM_DIMM4_STATUS == 0x02) +static UINT8 Dimm4SpdTbl[] = NB_OEM_DIMM4_SPD_DATA; +#endif +#endif // AMI_OVERRIDE_FOR_MEMORY_DOWN + +VOID OverrideSmBusNotify ( + IN EFI_EVENT Event, + IN VOID *Context +); + + +//************************************************************************* +//<AMI_PHDR_START> +// +// Procedure: OverrideSmBusExecute +// +// Description: Init SmBus MemoryDown Protocol Execute.. +// +// Input: +// +// Output: +// +//<AMI_PHDR_END> +//************************************************************************* +EFI_STATUS +EFIAPI +OverrideSmBusExecute ( + IN EFI_SMBUS_HC_PROTOCOL *This, + IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress, + IN EFI_SMBUS_DEVICE_COMMAND Command, + IN EFI_SMBUS_OPERATION Operation, + IN BOOLEAN PecCheck, + IN OUT UINTN *Length, + IN OUT VOID *Buffer + ) +{ + UINT8 *DimmSpd = NULL; + UINT8 *BufferPoint = Buffer; + UINT16 i = 0; + + if (IsRunMemoryDown) { +#ifdef NB_OEM_DIMM1_SPD_DATA + if(SlaveAddress.SmbusDeviceAddress == DIMM1_SMBUS_ADDRESS >> 1) { + DimmSpd = Dimm1SpdTbl; + } +#endif +#ifdef NB_OEM_DIMM2_SPD_DATA + if(SlaveAddress.SmbusDeviceAddress == DIMM2_SMBUS_ADDRESS >> 1) { + DimmSpd = Dimm2SpdTbl; + } +#endif +#ifdef NB_OEM_DIMM3_SPD_DATA + if(SlaveAddress.SmbusDeviceAddress == DIMM3_SMBUS_ADDRESS >> 1) { + DimmSpd = Dimm3SpdTbl; + } +#endif +#ifdef NB_OEM_DIMM4_SPD_DATA + if(SlaveAddress.SmbusDeviceAddress == DIMM4_SMBUS_ADDRESS >> 1) { + DimmSpd = Dimm4SpdTbl; + } +#endif + if (DimmSpd != NULL) { + for (i=0; i <= *Length; i++) { + *BufferPoint = DimmSpd[Command + i]; + BufferPoint++; + } + return EFI_SUCCESS; + } + } + + return PchSmBusExecute ( + This, + SlaveAddress, + Command, + Operation, + PecCheck, + Length, + Buffer + ); + +} +//************************************************************************* +//<AMI_PHDR_START> +// +// Procedure: OverrideSmBusNotify +// +// Description: Override SmBus Protocol Execute. +// +// Input: +// IN EFI_LEGACY_REGION_PROTOCOL *This, +// IN UINT32 Start, +// IN UINT32 Length, +// OUT UINT32 *Granularity, +// IN BOOLEAN *On +// +// Output: +// Status of the operation +// +//<AMI_PHDR_END> +//************************************************************************* +VOID OverrideSmBusNotify ( + IN EFI_EVENT Event, + IN VOID *Context ) +{ + EFI_STATUS Status; + + Status = pBS->LocateProtocol (&gEfiSmbusProtocolGuid, NULL, (VOID**) &SmBusProtocol); + if (!EFI_ERROR (Status)) { + + PchSmBusExecute = SmBusProtocol->Execute; + SmBusProtocol->Execute = OverrideSmBusExecute; + } + // Kill event + pBS->CloseEvent(Event); +} +//************************************************************************* +//<AMI_PHDR_START> +// +// Procedure: InitSmBusMemoryDown +// +// Description: Override the SmBus protocol. +// +// Input: +// IN EFI_HANDLE ImageHandle, +// IN EFI_SYSTEM_TABLE *SystemTable +// +// Output: +// Status of the operation +// +// Notes: +// Here is the control flow of this function: +// 1. Get SmBus protocol. +// 2. Override the SmBus protocol. +// +//<AMI_PHDR_END> +//************************************************************************* +EFI_STATUS InitSmBusMemoryDown( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + NB_SETUP_DATA *NBSetupData = NULL; + UINTN VariableSize = sizeof(NB_SETUP_DATA); + + + InitAmiLib(ImageHandle, SystemTable); + + Status = pBS->AllocatePool( EfiBootServicesData, \ + VariableSize, \ + &NBSetupData ); + ASSERT_EFI_ERROR(Status); + + GetNbSetupData( pRS, NBSetupData, FALSE ); + + if (NBSetupData->IsRunMemoryDown) { + IsRunMemoryDown = NBSetupData->IsRunMemoryDown; + + + //NbSetupdata Pass to SaGlobalNvsArea. + Status = pBS->CreateEvent ( + EFI_EVENT_NOTIFY_SIGNAL, + TPL_CALLBACK, + OverrideSmBusNotify, + NULL, + &gSmBusMemoryDownEvent + ); + + if (!EFI_ERROR (Status)) { + Status = pBS->RegisterProtocolNotify ( + &gEfiSMBusProtocolGuid, + gSmBusMemoryDownEvent, + &gSmBusMemoryDownEventReg + ); + } + + } + // Free memory used for setup data + pBS->FreePool( NBSetupData ); + + return Status; + +} + +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2012, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* |