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82b0358e3f
Added SpiHc DXE and SMM drivers. This code receives bus transactions from the SpiBus layer and passes them onto the SpiHcPlatformLib Platform Initialization Spec 1.7 volume 5 section 18.1.7 Bugzilla #4753 Cc: Abner Chang <abner.chang@amd.com> Cc: Abdul Lateef Attar <AbdulLateef.Attar@amd.com> Signed-off-by: Brit Chesley <brit.chesley@amd.com> Reviewed-by: Abner Chang <abner.chang@amd.com>
102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
/** @file
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SPI Host controller entry point for DXE
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Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PcdLib.h>
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#include <Library/UefiLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/SpiHcPlatformLib.h>
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#include <Protocol/SpiHc.h>
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#include <IndustryStandard/SpiNorFlashJedecSfdp.h>
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#include "SpiHc.h"
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EFI_HANDLE mSpiHcHandle = 0;
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/**
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Entry point of the SPI Host Controller driver. Installs the EFI_SPI_HC_PROTOCOL on mSpiHcHandle.
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Also installs the EFI_DEVICE_PATH_PROTOCOL corresponding to the SPI Host controller on the same
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mSpiHcHandle.
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@param[in] ImageHandle Image handle of this driver.
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@param[in] SystemTable Pointer to standard EFI system table.
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@retval EFI_SUCCESS Succeed.
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@retval EFI_OUT_RESOURCES If the system has run out of memory
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**/
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EFI_STATUS
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EFIAPI
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SpiHcProtocolEntry (
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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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EFI_SPI_HC_PROTOCOL *HcProtocol;
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EFI_DEVICE_PATH_PROTOCOL *HcDevicePath;
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DEBUG ((DEBUG_VERBOSE, "%a - ENTRY\n", __func__));
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// Allocate the SPI Host Controller protocol
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HcProtocol = AllocateZeroPool (sizeof (EFI_SPI_HC_PROTOCOL));
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ASSERT (HcProtocol != NULL);
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if (HcProtocol == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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// Fill in the SPI Host Controller Protocol
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Status = GetPlatformSpiHcDetails (
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&HcProtocol->Attributes,
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&HcProtocol->FrameSizeSupportMask,
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&HcProtocol->MaximumTransferBytes
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_VERBOSE, "Error, no Platform SPI HC details\n"));
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return Status;
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}
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HcProtocol->ChipSelect = ChipSelect;
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HcProtocol->Clock = Clock;
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HcProtocol->Transaction = Transaction;
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// Install Host Controller protocol
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Status = gBS->InstallProtocolInterface (
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&mSpiHcHandle,
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&gEfiSpiHcProtocolGuid,
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EFI_NATIVE_INTERFACE,
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HcProtocol
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_VERBOSE, "Error installing gEfiSpiHcProtocolGuid\n"));
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return Status;
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}
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Status = GetSpiHcDevicePath (&HcDevicePath);
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// Install HC device path here on this handle as well
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Status = gBS->InstallProtocolInterface (
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&mSpiHcHandle,
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&gEfiDevicePathProtocolGuid,
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EFI_NATIVE_INTERFACE,
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HcDevicePath
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_VERBOSE, "Error installing gEfiDevicePathProtocolGuid\n"));
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}
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DEBUG ((DEBUG_VERBOSE, "%a - EXIT Status=%r\n", __func__, Status));
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return Status;
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}
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