/** @file
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Phytium Spi Master Drivers.
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Copyright (C) 2020, Phytium Technology Co Ltd. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Uefi/UefiBaseType.h>
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#include "SpiDxe.h"
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PHYT_SPI_MASTER *pSpiMasterInstance;
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static UINTN mSpiControlBase;
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/**
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This function inited a spi driver.
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@param None.
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@retval None.
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**/
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EFI_STATUS
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EFIAPI
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SpiMasterInit (
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VOID
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)
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{
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return EFI_SUCCESS;
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}
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/**
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This function seted config to spi registers.
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@param[in] CmdId The id of command.
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@param[in] Config The value to be seted.
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@param[in] RegAddr The address of spi registers.
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@retval EFI_SUCCESS SpiMasterSetConfig() is executed successfully.
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**/
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EFI_STATUS
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EFIAPI
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SpiMasterSetConfig (
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IN UINT8 CmdId,
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IN UINT32 Config,
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IN UINTN RegAddr
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)
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{
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UINTN SpiAddr;
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UINT32 Value;
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SpiAddr = 0;
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Value = 0;
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if (CmdId != 0) {
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Value = (CmdId << 24) | (Config & 0xffffff);
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} else {
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Value = Config;
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}
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SpiAddr = mSpiControlBase + RegAddr;
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MmioWrite32 (SpiAddr, Value);
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return EFI_SUCCESS;
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}
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/**
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This function geted config from spi registers.
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@param[in] CmdId The id of command.
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@param[out] Config The pointer of the config.
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@param[in] RegAddr The address of spi registers.
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@retval EFI_SUCCESS SpiMasterGetConfig() is executed successfully.
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**/
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EFI_STATUS
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EFIAPI
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SpiMasterGetConfig (
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IN UINT8 CmdId,
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OUT UINT32 *Config,
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IN UINTN RegAddr
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)
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{
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UINTN SpiAddr;
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UINT32 Value;
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SpiAddr = 0;
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Value = 0;
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SpiAddr = mSpiControlBase + RegAddr;
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Value = MmioRead32 (SpiAddr);
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if (CmdId != 0) {
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*Config = Value & 0xffffff;
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} else {
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*Config = Value;
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}
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return EFI_SUCCESS;
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}
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/**
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This function seted spi mode.
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@param[in] Config The value to seted.
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@retval EFI_SUCCESS SpiMasterSetMode() is executed successfully.
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**/
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EFI_STATUS
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EFIAPI
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SpiMasterSetMode (
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IN UINT32 Config
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)
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{
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SpiMasterSetConfig (0, Config, REG_MODE_REG);
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return EFI_SUCCESS;
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}
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/**
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This function inited the spi driver protocol.
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@param[in] SpiMasterProtocol A pointer to the master protocol struct.
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@retval EFI_SUCCESS SpiMasterInitProtocol() is executed successfully.
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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SpiMasterInitProtocol (
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IN EFI_SPI_DRV_PROTOCOL *SpiMasterProtocol
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)
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{
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SpiMasterProtocol->SpiInit = SpiMasterInit;
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SpiMasterProtocol->SpiSetConfig = SpiMasterSetConfig;
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SpiMasterProtocol->SpiGetConfig = SpiMasterGetConfig;
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SpiMasterProtocol->SpiSetMode = SpiMasterSetMode;
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return EFI_SUCCESS;
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}
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/**
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This function is the entrypoint of the spi driver.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval other Some error occurs when executing this entry point.
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**/
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EFI_STATUS
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EFIAPI
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SpiMasterDrvEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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pSpiMasterInstance = AllocateRuntimeZeroPool (sizeof (PHYT_SPI_MASTER));
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if (pSpiMasterInstance == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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mSpiControlBase = FixedPcdGet64 (PcdSpiControllerBase);
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SpiMasterInitProtocol (&pSpiMasterInstance->SpiMasterProtocol);
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pSpiMasterInstance->Signature = SPI_MASTER_SIGNATURE;
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Status = gBS->InstallMultipleProtocolInterfaces (
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&(pSpiMasterInstance->Handle),
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&gSpiMasterProtocolGuid,
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&(pSpiMasterInstance->SpiMasterProtocol),
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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return EFI_SUCCESS;
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}
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