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/** @file
Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that 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.
**/
#include <PiDxe.h>
#include <Library/FlashDeviceLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiRuntimeLib.h>
#include <Protocol/SmmBase2.h>
#include <Guid/EventGroup.h>
#include "SpiChipDefinitions.h"
extern UINTN FlashDeviceBase;
extern EFI_SPI_PROTOCOL *mSpiProtocol;
VOID
EFIAPI
LibFvbFlashDeviceVirtualAddressChangeNotifyEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
gRT->ConvertPointer (0, (VOID **) &mSpiProtocol);
gRT->ConvertPointer (0, (VOID **) &FlashDeviceBase);
}
/**
The library constructuor.
The function does the necessary initialization work for this library
instance. Please put all initialization works in it.
@param[in] ImageHandle The firmware allocated handle for the UEFI image.
@param[in] SystemTable A pointer to the EFI system table.
@retval EFI_SUCCESS The function always return EFI_SUCCESS for now.
It will ASSERT on error for debug version.
@retval EFI_ERROR Please reference LocateProtocol for error code details.
**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceSupportInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_EVENT Event;
UINT8 SfId[3];
UINT8 FlashIndex;
UINT8 SpiReadError;
UINT8 SpiNotMatchError;
EFI_SMM_BASE2_PROTOCOL *SmmBase;
BOOLEAN InSmm;
SpiReadError = 0x00;
SpiNotMatchError = 0x00;
InSmm = FALSE;
Status = gBS->LocateProtocol (
&gEfiSmmBase2ProtocolGuid,
NULL,
(void **)&SmmBase
);
if (!EFI_ERROR(Status)) {
Status = SmmBase->InSmm(SmmBase, &InSmm);
if (EFI_ERROR(Status)) {
InSmm = FALSE;
}
}
if (!InSmm) {
Status = gBS->LocateProtocol (
&gEfiSpiProtocolGuid,
NULL,
(VOID **)&mSpiProtocol
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
LibFvbFlashDeviceVirtualAddressChangeNotifyEvent,
NULL,
&gEfiEventVirtualAddressChangeGuid,
&Event
);
ASSERT_EFI_ERROR (Status);
} else {
Status = gBS->LocateProtocol (
&gEfiSmmSpiProtocolGuid,
NULL,
(VOID **)&mSpiProtocol
);
ASSERT_EFI_ERROR (Status);
}
for (FlashIndex = EnumSpiFlashW25Q64; FlashIndex < EnumSpiFlashMax; FlashIndex++) {
Status = mSpiProtocol->Init (mSpiProtocol, &(mInitTable[FlashIndex]));
if (!EFI_ERROR (Status)) {
//
// Read Vendor/Device IDs to check if the driver supports the Serial Flash device.
//
Status = mSpiProtocol->Execute (
mSpiProtocol,
SPI_READ_ID,
SPI_WREN,
TRUE,
FALSE,
FALSE,
0,
3,
SfId,
EnumSpiRegionAll
);
if (!EFI_ERROR (Status)) {
if ((SfId[0] == mInitTable[FlashIndex].VendorId) &&
(SfId[1] == mInitTable[FlashIndex].DeviceId0) &&
(SfId[2] == mInitTable[FlashIndex].DeviceId1)) {
//
// Found a matching SPI device, FlashIndex now contains flash device.
//
DEBUG ((EFI_D_ERROR, "OK - Found SPI Flash Type in SPI Flash Driver, Device Type ID 0 = 0x%02x!\n", mInitTable[FlashIndex].DeviceId0));
DEBUG ((EFI_D_ERROR, "Device Type ID 1 = 0x%02x!\n", mInitTable[FlashIndex].DeviceId1));
if (mInitTable[FlashIndex].BiosStartOffset == (UINTN) (-1)) {
DEBUG ((EFI_D_ERROR, "ERROR - The size of BIOS image is bigger than SPI Flash device!\n"));
CpuDeadLoop ();
}
break;
} else {
SpiNotMatchError++;
}
} else {
SpiReadError++;
}
}
}
DEBUG ((EFI_D_ERROR, "SPI flash chip VID = 0x%X, DID0 = 0x%X, DID1 = 0x%X\n", SfId[0], SfId[1], SfId[2]));
if (FlashIndex < EnumSpiFlashMax) {
return EFI_SUCCESS;
} else {
if (SpiReadError != 0) {
DEBUG ((EFI_D_ERROR, "ERROR - SPI Read ID execution failed! Error Count = %d\n", SpiReadError));
}
else {
if (SpiNotMatchError != 0) {
DEBUG ((EFI_D_ERROR, "ERROR - No supported SPI flash chip found! Error Count = %d\n", SpiNotMatchError));
DEBUG ((EFI_D_ERROR, "SPI flash chip VID = 0x%X, DID0 = 0x%X, DID1 = 0x%X\n", SfId[0], SfId[1], SfId[2]));
}
}
return EFI_UNSUPPORTED;
}
}
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