void InitTW8836( void )
{
//sI2cInit();
TW8836_WritePage(0x00);
// printf("\r\nTW88xx ID = %x , REV = %x", TW8836_Read(REG000), TW8836_Read(REG001));
SpiFlashInit();
//TW8836_Configuration();
Delay_1ms(20 * 10);
}
EFI_STATUS
EFIAPI
InitSpiDevice (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_EVENT Event;
CONST FLASH_PART_DESCRIPTION *FlashDescription;
UINT64 FlashSize;
EFI_HANDLE Handle;
EFI_STATUS Status;
mNvStorageBase = PcdGet32 (PcdFlashNvStorageVariableBase);
//
// Locate the SPI controller protocol and save it for later.
//
DEBUG((EFI_D_INFO, "Locating SPI Controller Protocol.\n"));
Status = gBS->LocateProtocol (
&gEfiSpiProtocolGuid,
NULL,
(VOID **) &mSpiProtocol
);
ASSERT_EFI_ERROR(Status);
//
// Loop through all the flash devices that are supported and see if one will
// initialize the SPI Controller interface.
//
FlashSize = FindFlashSupport (
&JedecIdRead,
NULL,
&FlashDescription
);
if (FlashSize == 0) {
DEBUG((EFI_D_ERROR, "No SPI flash part description found!\r\n"));
} else {
//
// Attempt to configure the SPI controller for this device.
//
DEBUG((EFI_D_INFO, "SPI flash size: %d MBytes\n", DivU64x32(FlashSize, 1024 * 1024 )));
DEBUG((EFI_D_INFO, "Configuring SPI Controller.\n"));
Status = SpiFlashInit (FlashDescription);
if (!EFI_ERROR (Status)) {
//
// Publish the SPI Device protocol.
//
DEBUG((EFI_D_INFO, "Installing SPI Device Protocol.\n"));
Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&Handle,
&gSpiDeviceProtocolGuid,
&mSpiDevProtocol,
NULL
);
if (EFI_ERROR (Status)) {
return EFI_OUT_OF_RESOURCES;
}
//
// Make sure we can handle virtual address changes.
//
Event = NULL;
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
SpiDeviceVirtualAddressChangeEvent,
NULL,
&gEfiEventVirtualAddressChangeGuid,
&Event
);
return EFI_SUCCESS;
}
}
//
// Unable to find a supported SPI device
//
DEBUG((EFI_D_ERROR, "Unable to configure SPI Controller for SPI device present.\n"));
return EFI_UNSUPPORTED;
}
