1 files changed, 97 insertions, 0 deletions
diff --git a/MdeModulePkg/Include/Ppi/UfsHostControllerPlatformPpi.h b/MdeModulePkg/Include/Ppi/UfsHostControllerPlatformPpi.h
new file mode 100644
index 0000000000..9384a4e4c6
--- /dev/null
+++ b/MdeModulePkg/Include/Ppi/UfsHostControllerPlatformPpi.h
@@ -0,0 +1,97 @@
+/** @file
+  EDKII_UFS_HC_PLATFORM_PPI definition.
+
+Copyright (c) 2024, American Megatrends International LLC. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _EDKII_PEI_UFS_HC_PLATFORM_PPI_H_
+#define _EDKII_PEI_UFS_HC_PLATFORM_PPI_H_
+
+#define EDKII_UFS_HC_PLATFORM_PPI_VERSION  1
+
+extern EFI_GUID  gEdkiiUfsHcPlatformPpiGuid;
+
+///
+/// Forward declaration for the UFS_HOST_CONTROLLER_PPI.
+///
+typedef struct _EDKII_UFS_HC_PLATFORM_PPI EDKII_UFS_HC_PLATFORM_PPI;
+
+typedef struct {
+  UINT32    Capabilities;
+  UINT32    Version;
+} EDKII_UFS_HC_INFO;
+
+/**
+  Allows platform PPI to override host controller information
+
+  @param[in]      ControllerHandle  Handle of the UFS controller.
+  @param[in, out] HcInfo            Pointer EDKII_UFS_HC_INFO associated with host controller.
+
+  @retval EFI_SUCCESS            Function completed successfully.
+  @retval EFI_INVALID_PARAMETER  HcInfo is NULL.
+  @retval Others                 Function failed to complete.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EDKII_UFS_HC_PLATFORM_OVERRIDE_HC_INFO)(
+  IN     EFI_HANDLE         ControllerHandle,
+  IN OUT EDKII_UFS_HC_INFO  *HcInfo
+  );
+
+typedef enum {
+  EdkiiUfsHcPreHce,
+  EdkiiUfsHcPostHce,
+  EdkiiUfsHcPreLinkStartup,
+  EdkiiUfsHcPostLinkStartup
+} EDKII_UFS_HC_PLATFORM_CALLBACK_PHASE;
+
+typedef enum {
+  EdkiiUfsCardRefClkFreq19p2Mhz,
+  EdkiiUfsCardRefClkFreq26Mhz,
+  EdkiiUfsCardRefClkFreq38p4Mhz,
+  EdkiiUfsCardRefClkFreqObsolete
+} EDKII_UFS_CARD_REF_CLK_FREQ_ATTRIBUTE;
+
+/**
+  Callback function for platform driver.
+
+  @param[in] UfsHcBaseddr     The pointer to UfsHcBase address.
+  @param[in] CallbackPhase    Specifies when the platform ppi is called
+
+  @retval EFI_SUCCESS            Override function completed successfully.
+  @retval EFI_INVALID_PARAMETER  CallbackPhase is invalid or CallbackData is NULL when phase expects valid data.
+  @retval Others                 Function failed to complete.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EDKII_UFS_HC_PLATFORM_PEI_CALLBACK)(
+  IN     UINTN                                 *UfsHcBaseAddr,
+  IN     EDKII_UFS_HC_PLATFORM_CALLBACK_PHASE  CallbackPhase
+  );
+
+///
+/// This PPI contains a set of services to interact with the UFS host controller.
+///
+struct _EDKII_UFS_HC_PLATFORM_PPI {
+  ///
+  /// Version of the PPI.
+  ///
+  UINT32                                    Version;
+  ///
+  /// Allows platform driver to override host controller information.
+  ///
+  EDKII_UFS_HC_PLATFORM_OVERRIDE_HC_INFO    OverrideHcInfo;
+  ///
+  /// Allows platform driver to implement platform specific flows
+  /// for host controller.
+  ///
+  EDKII_UFS_HC_PLATFORM_PEI_CALLBACK        Callback;
+  ///
+  /// Reference Clock Frequency Ufs Card Attribute that need to be set in this Ufs Host Environment.
+  ///
+  EDKII_UFS_CARD_REF_CLK_FREQ_ATTRIBUTE     RefClkFreq;
+};
+
+#endif