MdeModulePkg: SpiHc: SpiHc Drivers

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>

MdeModulePkg/Bus/Spi/SpiHc/SpiHcDxe.c

@@ -0,0 +1,101 @@
+/** @file
+
+  SPI Host controller entry point for DXE
+
+  Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#include <Base.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/SpiHcPlatformLib.h>
+#include <Protocol/SpiHc.h>
+#include <IndustryStandard/SpiNorFlashJedecSfdp.h>
+#include "SpiHc.h"
+
+EFI_HANDLE  mSpiHcHandle = 0;
+
+/**
+  Entry point of the SPI Host Controller driver. Installs the EFI_SPI_HC_PROTOCOL on mSpiHcHandle.
+  Also installs the EFI_DEVICE_PATH_PROTOCOL corresponding to the SPI Host controller on the same
+  mSpiHcHandle.
+
+  @param[in] ImageHandle  Image handle of this driver.
+  @param[in] SystemTable  Pointer to standard EFI system table.
+
+  @retval EFI_SUCCESS       Succeed.
+  @retval EFI_OUT_RESOURCES If the system has run out of memory
+**/
+EFI_STATUS
+EFIAPI
+SpiHcProtocolEntry (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  EFI_STATUS                Status;
+  EFI_SPI_HC_PROTOCOL       *HcProtocol;
+  EFI_DEVICE_PATH_PROTOCOL  *HcDevicePath;
+
+  DEBUG ((DEBUG_VERBOSE, "%a - ENTRY\n", __func__));
+
+  // Allocate the SPI Host Controller protocol
+  HcProtocol = AllocateZeroPool (sizeof (EFI_SPI_HC_PROTOCOL));
+  ASSERT (HcProtocol != NULL);
+  if (HcProtocol == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  // Fill in the SPI Host Controller Protocol
+  Status = GetPlatformSpiHcDetails (
+             &HcProtocol->Attributes,
+             &HcProtocol->FrameSizeSupportMask,
+             &HcProtocol->MaximumTransferBytes
+             );
+
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VERBOSE, "Error, no Platform SPI HC details\n"));
+    return Status;
+  }
+
+  HcProtocol->ChipSelect  = ChipSelect;
+  HcProtocol->Clock       = Clock;
+  HcProtocol->Transaction = Transaction;
+
+  // Install Host Controller protocol
+  Status = gBS->InstallProtocolInterface (
+                  &mSpiHcHandle,
+                  &gEfiSpiHcProtocolGuid,
+                  EFI_NATIVE_INTERFACE,
+                  HcProtocol
+                  );
+
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VERBOSE, "Error installing gEfiSpiHcProtocolGuid\n"));
+    return Status;
+  }
+
+  Status = GetSpiHcDevicePath (&HcDevicePath);
+
+  // Install HC device path here on this handle as well
+  Status = gBS->InstallProtocolInterface (
+                  &mSpiHcHandle,
+                  &gEfiDevicePathProtocolGuid,
+                  EFI_NATIVE_INTERFACE,
+                  HcDevicePath
+                  );
+
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_VERBOSE, "Error installing gEfiDevicePathProtocolGuid\n"));
+  }
+
+  DEBUG ((DEBUG_VERBOSE, "%a - EXIT Status=%r\n", __func__, Status));
+
+  return Status;
+}