[PATCH v4 edk2-platforms 17/23] Platform/Raspberry/Pi3: Add platform boot manager and helper libraries

[Pete Batard <pete@akeo.ie>]

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Pete Batard <pete@akeo.ie>
---
 Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.c               | 793 ++++++++++++++++++++
 Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.h               |  60 ++
 Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf |  90 +++
 Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.c               | 120 +++
 Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.inf             |  34 +
 5 files changed, 1097 insertions(+)

diff --git a/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.c b/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.c
new file mode 100644
index 000000000000..9bbe0db64950
--- /dev/null
+++ b/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.c
@@ -0,0 +1,793 @@
+/** @file
+ *
+ *  Copyright (c) 2018, Pete Batard <pete@akeo.ie>
+ *  Copyright (c) 2017-2018, Andrei Warkentin <andrey.warkentin@gmail.com>
+ *  Copyright (c) 2016, Linaro Ltd. All rights reserved.
+ *  Copyright (c) 2015-2016, Red Hat, Inc.
+ *  Copyright (c) 2014, ARM Ltd. All rights reserved.
+ *  Copyright (c) 2004-2016, Intel Corporation. All rights reserved.
+ *
+ *  This program and the accompanying materials
+ *  are licensed and made available under the terms and conditions of the BSD License
+ *  which accompanies this distribution.  The full text of the license may be found at
+ *  http://opensource.org/licenses/bsd-license.php
+ *
+ *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ *
+ **/
+
+#include <Library/BootLogoLib.h>
+#include <Library/CapsuleLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/HobLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiBootManagerLib.h>
+#include <Library/UefiLib.h>
+#include <Library/PrintLib.h>
+#include <Protocol/DevicePath.h>
+#include <Protocol/EsrtManagement.h>
+#include <Protocol/GraphicsOutput.h>
+#include <Protocol/LoadedImage.h>
+#include <Guid/EventGroup.h>
+#include <Guid/TtyTerm.h>
+#include <Protocol/BootLogo.h>
+
+#include "PlatformBm.h"
+
+#define BOOT_PROMPT L"ESC (setup), F1 (shell), ENTER (boot)"
+
+#define DP_NODE_LEN(Type) { (UINT8)sizeof (Type), (UINT8)(sizeof (Type) >> 8) }
+
+#pragma pack (1)
+typedef struct {
+  VENDOR_DEVICE_PATH         SerialDxe;
+  UART_DEVICE_PATH           Uart;
+  VENDOR_DEFINED_DEVICE_PATH TermType;
+  EFI_DEVICE_PATH_PROTOCOL   End;
+} PLATFORM_SERIAL_CONSOLE;
+#pragma pack ()
+
+typedef struct {
+  VENDOR_DEVICE_PATH         Custom;
+  USB_DEVICE_PATH            Hub;
+  USB_DEVICE_PATH            Dev;
+  EFI_DEVICE_PATH_PROTOCOL   EndDevicePath;
+} PLATFORM_USB_DEV;
+
+typedef struct {
+  VENDOR_DEVICE_PATH         Custom;
+  EFI_DEVICE_PATH_PROTOCOL   EndDevicePath;
+} PLATFORM_SD_DEV;
+
+#define ARASAN_MMC_DXE_FILE_GUID  \
+  { 0x100c2cfa, 0xb586, 0x4198, { 0x9b, 0x4c, 0x16, 0x83, 0xd1, 0x95, 0xb1, 0xda } }
+
+#define SDHOST_MMC_DXE_FILE_GUID  \
+  { 0x58abd787, 0xf64d, 0x4ca2, { 0xa0, 0x34, 0xb9, 0xac, 0x2d, 0x5a, 0xd0, 0xcf } }
+
+#define SERIAL_DXE_FILE_GUID      \
+  { 0xD3987D4B, 0x971A, 0x435F, { 0x8C, 0xAF, 0x49, 0x67, 0xEB, 0x62, 0x72, 0x41 } }
+
+STATIC PLATFORM_SD_DEV mArasan = {
+  //
+  // VENDOR_DEVICE_PATH ArasanMMCHostDxe
+  //
+  {
+    { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
+    ARASAN_MMC_DXE_FILE_GUID
+  },
+
+  //
+  // EFI_DEVICE_PATH_PROTOCOL End
+  //
+  {
+    END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+  }
+};
+
+STATIC PLATFORM_SD_DEV mSDHost = {
+  //
+  // VENDOR_DEVICE_PATH SdHostDxe
+  //
+  {
+    { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
+    SDHOST_MMC_DXE_FILE_GUID
+  },
+
+  //
+  // EFI_DEVICE_PATH_PROTOCOL End
+  //
+  {
+    END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+  }
+};
+
+STATIC PLATFORM_SERIAL_CONSOLE mSerialConsole = {
+  //
+  // VENDOR_DEVICE_PATH SerialDxe
+  //
+  {
+    { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
+    SERIAL_DXE_FILE_GUID
+  },
+
+  //
+  // UART_DEVICE_PATH Uart
+  //
+  {
+    { MESSAGING_DEVICE_PATH, MSG_UART_DP, DP_NODE_LEN (UART_DEVICE_PATH) },
+    0,                                      // Reserved
+    FixedPcdGet64 (PcdUartDefaultBaudRate), // BaudRate
+    FixedPcdGet8 (PcdUartDefaultDataBits),  // DataBits
+    FixedPcdGet8 (PcdUartDefaultParity),    // Parity
+    FixedPcdGet8 (PcdUartDefaultStopBits)   // StopBits
+  },
+
+  //
+  // VENDOR_DEFINED_DEVICE_PATH TermType
+  //
+  {
+    {
+      MESSAGING_DEVICE_PATH, MSG_VENDOR_DP,
+      DP_NODE_LEN (VENDOR_DEFINED_DEVICE_PATH)
+    }
+    //
+    // Guid to be filled in dynamically
+    //
+  },
+
+  //
+  // EFI_DEVICE_PATH_PROTOCOL End
+  //
+  {
+    END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+  }
+};
+
+
+#pragma pack (1)
+typedef struct {
+  USB_CLASS_DEVICE_PATH    Keyboard;
+  EFI_DEVICE_PATH_PROTOCOL End;
+} PLATFORM_USB_KEYBOARD;
+#pragma pack ()
+
+STATIC PLATFORM_USB_KEYBOARD mUsbKeyboard = {
+  //
+  // USB_CLASS_DEVICE_PATH Keyboard
+  //
+  {
+    {
+      MESSAGING_DEVICE_PATH, MSG_USB_CLASS_DP,
+      DP_NODE_LEN (USB_CLASS_DEVICE_PATH)
+    },
+    0xFFFF, // VendorId: any
+    0xFFFF, // ProductId: any
+    3,      // DeviceClass: HID
+    1,      // DeviceSubClass: boot
+    1       // DeviceProtocol: keyboard
+  },
+
+  //
+  // EFI_DEVICE_PATH_PROTOCOL End
+  //
+  {
+    END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+  }
+};
+
+STATIC EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *mSerialConProtocol;
+
+/**
+  Check if the handle satisfies a particular condition.
+
+  @param[in] Handle      The handle to check.
+  @param[in] ReportText  A caller-allocated string passed in for reporting
+                         purposes. It must never be NULL.
+
+  @retval TRUE   The condition is satisfied.
+  @retval FALSE  Otherwise. This includes the case when the condition could not
+                 be fully evaluated due to an error.
+**/
+typedef
+BOOLEAN
+(EFIAPI *FILTER_FUNCTION) (
+  IN EFI_HANDLE   Handle,
+  IN CONST CHAR16 *ReportText
+  );
+
+
+/**
+  Process a handle.
+
+  @param[in] Handle      The handle to process.
+  @param[in] ReportText  A caller-allocated string passed in for reporting
+                         purposes. It must never be NULL.
+**/
+typedef
+VOID
+(EFIAPI *CALLBACK_FUNCTION)  (
+  IN EFI_HANDLE   Handle,
+  IN CONST CHAR16 *ReportText
+  );
+
+/**
+  Locate all handles that carry the specified protocol, filter them with a
+  callback function, and pass each handle that passes the filter to another
+  callback.
+
+  @param[in] ProtocolGuid  The protocol to look for.
+
+  @param[in] Filter        The filter function to pass each handle to. If this
+                           parameter is NULL, then all handles are processed.
+
+  @param[in] Process       The callback function to pass each handle to that
+                           clears the filter.
+**/
+STATIC
+VOID
+FilterAndProcess (
+  IN EFI_GUID          *ProtocolGuid,
+  IN FILTER_FUNCTION   Filter         OPTIONAL,
+  IN CALLBACK_FUNCTION Process
+  )
+{
+  EFI_STATUS Status;
+  EFI_HANDLE *Handles;
+  UINTN      NoHandles;
+  UINTN      Idx;
+
+  Status = gBS->LocateHandleBuffer (ByProtocol, ProtocolGuid,
+                  NULL /* SearchKey */, &NoHandles, &Handles);
+  if (EFI_ERROR (Status)) {
+    //
+    // This is not an error, just an informative condition.
+    //
+    DEBUG ((DEBUG_VERBOSE, "%a: %g: %r\n", __FUNCTION__, ProtocolGuid,
+      Status));
+    return;
+  }
+
+  ASSERT (NoHandles > 0);
+  for (Idx = 0; Idx < NoHandles; ++Idx) {
+    CHAR16        *DevicePathText;
+    STATIC CHAR16 Fallback[] = L"<device path unavailable>";
+
+    //
+    // The ConvertDevicePathToText() function handles NULL input transparently.
+    //
+    DevicePathText = ConvertDevicePathToText (
+                       DevicePathFromHandle (Handles[Idx]),
+                       FALSE, // DisplayOnly
+                       FALSE  // AllowShortcuts
+                     );
+    if (DevicePathText == NULL) {
+      DevicePathText = Fallback;
+    }
+
+    if (Filter == NULL || Filter (Handles[Idx], DevicePathText)) {
+      Process (Handles[Idx], DevicePathText);
+    }
+
+    if (DevicePathText != Fallback) {
+      FreePool (DevicePathText);
+    }
+  }
+  gBS->FreePool (Handles);
+}
+
+/**
+  This CALLBACK_FUNCTION retrieves the EFI_DEVICE_PATH_PROTOCOL from the
+  handle, and adds it to ConOut and ErrOut.
+**/
+STATIC
+VOID
+EFIAPI
+AddOutput (
+  IN EFI_HANDLE   Handle,
+  IN CONST CHAR16 *ReportText
+  )
+{
+  EFI_STATUS               Status;
+  EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+
+  DevicePath = DevicePathFromHandle (Handle);
+  if (DevicePath == NULL) {
+    DEBUG ((DEBUG_ERROR, "%a: %s: handle %p: device path not found\n",
+      __FUNCTION__, ReportText, Handle));
+    return;
+  }
+
+  Status = EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "%a: %s: adding to ConOut: %r\n", __FUNCTION__,
+      ReportText, Status));
+    return;
+  }
+
+  Status = EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "%a: %s: adding to ErrOut: %r\n", __FUNCTION__,
+      ReportText, Status));
+    return;
+  }
+
+  DEBUG ((DEBUG_VERBOSE, "%a: %s: added to ConOut and ErrOut\n", __FUNCTION__,
+    ReportText));
+}
+
+STATIC
+INTN
+PlatformRegisterBootOption (
+  EFI_DEVICE_PATH_PROTOCOL *DevicePath,
+  CHAR16                   *Description,
+  UINT32                   Attributes
+  )
+{
+  EFI_STATUS                        Status;
+  INTN                              OptionIndex;
+  EFI_BOOT_MANAGER_LOAD_OPTION      NewOption;
+  EFI_BOOT_MANAGER_LOAD_OPTION      *BootOptions;
+  UINTN                             BootOptionCount;
+
+  Status = EfiBootManagerInitializeLoadOption (
+             &NewOption,
+             LoadOptionNumberUnassigned,
+             LoadOptionTypeBoot,
+             Attributes,
+             Description,
+             DevicePath,
+             NULL,
+             0
+           );
+  ASSERT_EFI_ERROR (Status);
+
+  BootOptions = EfiBootManagerGetLoadOptions (&BootOptionCount, LoadOptionTypeBoot);
+
+  OptionIndex = EfiBootManagerFindLoadOption (&NewOption, BootOptions, BootOptionCount);
+
+  if (OptionIndex == -1) {
+    Status = EfiBootManagerAddLoadOptionVariable (&NewOption, MAX_UINTN);
+    ASSERT_EFI_ERROR (Status);
+    OptionIndex = BootOptionCount;
+  }
+
+  EfiBootManagerFreeLoadOption (&NewOption);
+  EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
+
+  return OptionIndex;
+}
+
+STATIC
+INTN
+PlatformRegisterFvBootOption (
+  CONST EFI_GUID                   *FileGuid,
+  CHAR16                           *Description,
+  UINT32                           Attributes
+  )
+{
+  EFI_STATUS                        Status;
+  MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileNode;
+  EFI_LOADED_IMAGE_PROTOCOL         *LoadedImage;
+  EFI_DEVICE_PATH_PROTOCOL          *DevicePath;
+  INTN OptionIndex;
+
+  Status = gBS->HandleProtocol (
+                  gImageHandle,
+                  &gEfiLoadedImageProtocolGuid,
+                  (VOID**)&LoadedImage
+                );
+  ASSERT_EFI_ERROR (Status);
+
+  EfiInitializeFwVolDevicepathNode (&FileNode, FileGuid);
+  DevicePath = DevicePathFromHandle (LoadedImage->DeviceHandle);
+  ASSERT (DevicePath != NULL);
+  DevicePath = AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL*)&FileNode);
+  ASSERT (DevicePath != NULL);
+
+  OptionIndex = PlatformRegisterBootOption (DevicePath, Description, Attributes);
+  FreePool (DevicePath);
+
+  return OptionIndex;
+}
+
+STATIC
+VOID
+RemoveStaleBootOptions (
+  VOID
+)
+{
+  EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
+  UINTN                        BootOptionCount;
+  UINTN                        Index;
+  EFI_STATUS                   Status;
+
+  BootOptions = EfiBootManagerGetLoadOptions (&BootOptionCount,
+    LoadOptionTypeBoot);
+
+  for (Index = 0; Index < BootOptionCount; ++Index) {
+    EFI_DEVICE_PATH_PROTOCOL *DevicePath = BootOptions[Index].FilePath;
+
+    if (CompareMem (&mArasan, DevicePath, GetDevicePathSize (DevicePath)) == 0) {
+      if (PcdGet32 (PcdSdIsArasan)) {
+        continue;
+      }
+    } else if (CompareMem (&mSDHost, DevicePath, GetDevicePathSize (DevicePath)) == 0) {
+      if (!PcdGet32 (PcdSdIsArasan)) {
+        continue;
+      }
+    } else {
+      continue;
+    }
+
+    //
+    // Delete the boot options corresponding to stale SD controllers.
+    //
+    Status = EfiBootManagerDeleteLoadOptionVariable (
+      BootOptions[Index].OptionNumber, LoadOptionTypeBoot);
+    DEBUG_CODE (
+      CHAR16 *DevicePathString;
+
+      DevicePathString = ConvertDevicePathToText(BootOptions[Index].FilePath, FALSE, FALSE);
+      DEBUG ((
+        EFI_ERROR (Status) ? EFI_D_WARN : EFI_D_INFO,
+        "%a: removing stale Boot#%04x %s: %r\n",
+        __FUNCTION__,
+        (UINT32)BootOptions[Index].OptionNumber,
+        DevicePathString == NULL ? L"<unavailable>" : DevicePathString,
+        Status
+      ));
+      if (DevicePathString != NULL) {
+        FreePool (DevicePathString);
+      }
+    );
+  }
+
+  EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
+}
+
+STATIC
+VOID
+PlatformRegisterOptionsAndKeys (
+  VOID
+  )
+{
+  EFI_STATUS                   Status;
+  EFI_INPUT_KEY                Enter;
+  EFI_INPUT_KEY                F1;
+  EFI_INPUT_KEY                Esc;
+  EFI_BOOT_MANAGER_LOAD_OPTION BootOption;
+  INTN ShellOption;
+
+  RemoveStaleBootOptions ();
+
+  ShellOption = PlatformRegisterFvBootOption (&gUefiShellFileGuid, L"UEFI Shell", LOAD_OPTION_ACTIVE);
+  if (ShellOption != -1) {
+    //
+    // F1 boots Shell.
+    //
+    F1.ScanCode = SCAN_F1;
+    F1.UnicodeChar = CHAR_NULL;
+    Status = EfiBootManagerAddKeyOptionVariable (NULL, (UINT16)ShellOption, 0, &F1, NULL);
+    ASSERT (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED);
+  }
+
+  //
+  // Register ENTER as CONTINUE key
+  //
+  Enter.ScanCode = SCAN_NULL;
+  Enter.UnicodeChar = CHAR_CARRIAGE_RETURN;
+  Status = EfiBootManagerRegisterContinueKeyOption (0, &Enter, NULL);
+  ASSERT_EFI_ERROR (Status);
+
+  //
+  // Map ESC to Boot Manager Menu
+  //
+  Esc.ScanCode = SCAN_ESC;
+  Esc.UnicodeChar = CHAR_NULL;
+  Status = EfiBootManagerGetBootManagerMenu (&BootOption);
+  ASSERT_EFI_ERROR (Status);
+  Status = EfiBootManagerAddKeyOptionVariable (NULL, (UINT16)BootOption.OptionNumber, 0, &Esc, NULL);
+  ASSERT (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED);
+}
+
+STATIC VOID
+SerialConPrint (
+  IN CHAR16 *Text
+  )
+{
+  if (mSerialConProtocol != NULL) {
+    mSerialConProtocol->OutputString (mSerialConProtocol, Text);
+  }
+}
+
+STATIC
+VOID
+EFIAPI
+ExitBootServicesHandler (
+  IN EFI_EVENT  Event,
+  IN VOID       *Context
+  )
+{
+  EFI_STATUS Status;
+  //
+  // Long enough to occlude the string printed
+  // in PlatformBootManagerWaitCallback.
+  //
+  STATIC CHAR16 *OsBootStr = L"Exiting UEFI and booting EL2 OS kernel!\r\n";
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Green;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Black;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Yellow;
+
+  if (!PcdGet32 (PcdDebugShowUEFIExit)) {
+    return;
+  }
+
+  Green.Raw = 0x00007F00;
+  Black.Raw = 0x00000000;
+  Yellow.Raw = 0x00FFFF00;
+
+  Status = BootLogoUpdateProgress (Yellow.Pixel,
+             Black.Pixel,
+             OsBootStr,
+             Green.Pixel,
+             100, 0);
+  if (Status == EFI_SUCCESS) {
+    SerialConPrint (OsBootStr);
+  } else {
+    Print (L"\n");
+    Print (OsBootStr);
+    Print (L"\n");
+  }
+}
+
+//
+// BDS Platform Functions
+//
+/**
+  Do the platform init, can be customized by OEM/IBV
+  Possible things that can be done in PlatformBootManagerBeforeConsole:
+  > Update console variable: 1. include hot-plug devices;
+  >                          2. Clear ConIn and add SOL for AMT
+  > Register new Driver#### or Boot####
+  > Register new Key####: e.g.: F12
+  > Signal ReadyToLock event
+  > Authentication action: 1. connect Auth devices;
+  >                        2. Identify auto logon user.
+**/
+VOID
+EFIAPI
+PlatformBootManagerBeforeConsole (
+  VOID
+  )
+{
+  EFI_STATUS Status;
+  EFI_EVENT ExitBSEvent;
+  ESRT_MANAGEMENT_PROTOCOL *EsrtManagement;
+
+  Status = gBS->CreateEventEx (
+                  EVT_NOTIFY_SIGNAL,
+                  TPL_NOTIFY,
+                  ExitBootServicesHandler,
+                  NULL,
+                  &gEfiEventExitBootServicesGuid,
+                  &ExitBSEvent
+                );
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "%a: failed to register ExitBootServices handler\n", __FUNCTION__));
+  }
+
+  if (GetBootModeHob () == BOOT_ON_FLASH_UPDATE) {
+    DEBUG ((DEBUG_INFO, "ProcessCapsules Before EndOfDxe ......\n"));
+    Status = ProcessCapsules ();
+    DEBUG ((DEBUG_INFO, "ProcessCapsules returned %r\n", Status));
+  } else {
+    Status = gBS->LocateProtocol (&gEsrtManagementProtocolGuid, NULL, (VOID**)&EsrtManagement);
+    if (!EFI_ERROR (Status)) {
+      EsrtManagement->SyncEsrtFmp ();
+    }
+  }
+
+  //
+  // Now add the device path of all handles with GOP on them to ConOut and
+  // ErrOut.
+  //
+  FilterAndProcess (&gEfiGraphicsOutputProtocolGuid, NULL, AddOutput);
+
+  //
+  // Add the hardcoded short-form USB keyboard device path to ConIn.
+  //
+  EfiBootManagerUpdateConsoleVariable (ConIn, (EFI_DEVICE_PATH_PROTOCOL*)&mUsbKeyboard, NULL);
+
+  //
+  // Add the hardcoded serial console device path to ConIn, ConOut, ErrOut.
+  //
+  ASSERT (FixedPcdGet8 (PcdDefaultTerminalType) == 4);
+  CopyGuid (&mSerialConsole.TermType.Guid, &gEfiTtyTermGuid);
+
+  EfiBootManagerUpdateConsoleVariable (ConIn, (EFI_DEVICE_PATH_PROTOCOL*)&mSerialConsole, NULL);
+  EfiBootManagerUpdateConsoleVariable (ConOut, (EFI_DEVICE_PATH_PROTOCOL*)&mSerialConsole, NULL);
+  EfiBootManagerUpdateConsoleVariable (ErrOut, (EFI_DEVICE_PATH_PROTOCOL*)&mSerialConsole, NULL);
+
+  //
+  // Signal EndOfDxe PI Event
+  //
+  EfiEventGroupSignal (&gEfiEndOfDxeEventGroupGuid);
+
+  //
+  // Dispatch deferred images after EndOfDxe event and ReadyToLock installation.
+  //
+  EfiBootManagerDispatchDeferredImages ();
+}
+
+/**
+  Do the platform specific action after the console is ready
+  Possible things that can be done in PlatformBootManagerAfterConsole:
+  > Console post action:
+    > Dynamically switch output mode from 100x31 to 80x25 for certain senarino
+    > Signal console ready platform customized event
+  > Run diagnostics like memory testing
+  > Connect certain devices
+  > Dispatch aditional option roms
+  > Special boot: e.g.: USB boot, enter UI
+**/
+VOID
+EFIAPI
+PlatformBootManagerAfterConsole (
+  VOID
+  )
+{
+  ESRT_MANAGEMENT_PROTOCOL      *EsrtManagement;
+  EFI_STATUS                    Status;
+  EFI_HANDLE SerialHandle;
+
+  Status = EfiBootManagerConnectDevicePath ((EFI_DEVICE_PATH_PROTOCOL*)&mSerialConsole, &SerialHandle);
+  if (Status == EFI_SUCCESS) {
+    gBS->HandleProtocol (SerialHandle, &gEfiSimpleTextOutProtocolGuid, (VOID**)&mSerialConProtocol);
+  }
+
+  //
+  // Show the splash screen.
+  //
+  Status = BootLogoEnableLogo ();
+  if (Status == EFI_SUCCESS) {
+    SerialConPrint (BOOT_PROMPT);
+  } else {
+    Print (BOOT_PROMPT);
+  }
+
+  //
+  // Connect the rest of the devices.
+  //
+  EfiBootManagerConnectAll ();
+
+  Status = gBS->LocateProtocol (&gEsrtManagementProtocolGuid, NULL, (VOID**)&EsrtManagement);
+  if (!EFI_ERROR (Status)) {
+    EsrtManagement->SyncEsrtFmp ();
+  }
+
+  if (GetBootModeHob () == BOOT_ON_FLASH_UPDATE) {
+    DEBUG ((DEBUG_INFO, "ProcessCapsules After EndOfDxe ......\n"));
+    Status = ProcessCapsules ();
+    DEBUG ((DEBUG_INFO, "ProcessCapsules returned %r\n", Status));
+  }
+
+  PlatformRegisterOptionsAndKeys ();
+}
+
+/**
+  This function is called each second during the boot manager waits the
+  timeout.
+
+  @param TimeoutRemain  The remaining timeout.
+**/
+VOID
+EFIAPI
+PlatformBootManagerWaitCallback (
+  IN UINT16  TimeoutRemain
+  )
+{
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION Black;
+  EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION White;
+  UINT16                              Timeout;
+  EFI_STATUS                          Status;
+  EFI_BOOT_LOGO_PROTOCOL *BootLogo;
+
+  Timeout = PcdGet16 (PcdPlatformBootTimeOut);
+
+  Black.Raw = 0x00000000;
+  White.Raw = 0x00FFFFFF;
+
+  Status = BootLogoUpdateProgress (
+             White.Pixel,
+             Black.Pixel,
+             BOOT_PROMPT,
+             White.Pixel,
+             (Timeout - TimeoutRemain) * 100 / Timeout,
+             0
+           );
+  if (Status == EFI_SUCCESS) {
+    SerialConPrint (L".");
+  } else {
+    Print (L".");
+  }
+
+  if (TimeoutRemain == 0) {
+    BootLogo = NULL;
+
+    //
+    // Clear out the boot logo so that Windows displays its own logo
+    // instead of ours.
+    //
+    Status = gBS->LocateProtocol (&gEfiBootLogoProtocolGuid, NULL, (VOID**)&BootLogo);
+    if (!EFI_ERROR (Status) && (BootLogo != NULL)) {
+      Status = BootLogo->SetBootLogo (BootLogo, NULL, 0, 0, 0, 0);
+      ASSERT_EFI_ERROR (Status);
+    };
+
+    gST->ConOut->ClearScreen (gST->ConOut);
+  }
+}
+
+/**
+  The function is called when no boot option could be launched,
+  including platform recovery options and options pointing to applications
+  built into firmware volumes.
+  If this function returns, BDS attempts to enter an infinite loop.
+**/
+VOID
+EFIAPI
+PlatformBootManagerUnableToBoot (
+  VOID
+  )
+{
+  EFI_STATUS                   Status;
+  EFI_INPUT_KEY                Key;
+  EFI_BOOT_MANAGER_LOAD_OPTION BootManagerMenu;
+  UINTN                        Index;
+
+  //
+  // BootManagerMenu doesn't contain the correct information when return status
+  // is EFI_NOT_FOUND.
+  //
+  Status = EfiBootManagerGetBootManagerMenu (&BootManagerMenu);
+  if (EFI_ERROR (Status)) {
+    return;
+  }
+  //
+  // Normally BdsDxe does not print anything to the system console, but this is
+  // a last resort -- the end-user will likely not see any DEBUG messages
+  // logged in this situation.
+  //
+  // AsciiPrint() will NULL-check gST->ConOut internally. We check gST->ConIn
+  // here to see if it makes sense to request and wait for a keypress.
+  //
+  if (gST->ConIn != NULL) {
+    AsciiPrint (
+      "%a: No bootable option or device was found.\n"
+      "%a: Press any key to enter the Boot Manager Menu.\n",
+      gEfiCallerBaseName,
+      gEfiCallerBaseName);
+    Status = gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);
+    ASSERT_EFI_ERROR (Status);
+    ASSERT (Index == 0);
+
+    //
+    // Drain any queued keys.
+    //
+    while (!EFI_ERROR (gST->ConIn->ReadKeyStroke (gST->ConIn, &Key))) {
+      //
+      // just throw away Key
+      //
+    }
+  }
+
+  for (;;) {
+    EfiBootManagerBoot (&BootManagerMenu);
+  }
+}
diff --git a/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.h b/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.h
new file mode 100644
index 000000000000..3717ba6174df
--- /dev/null
+++ b/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBm.h
@@ -0,0 +1,60 @@
+/** @file
+ *
+ *  Copyright (c) 2017-2018, Andrei Warkentin <andrey.warkentin@gmail.com>
+ *  Copyright (c) 2016, Linaro Ltd. All rights reserved.
+ *  Copyright (c) 2015-2016, Red Hat, Inc.
+ *  Copyright (c) 2014, ARM Ltd. All rights reserved.
+ *  Copyright (c) 2004-2016, Intel Corporation. All rights reserved.
+ *
+ *  This program and the accompanying materials
+ *  are licensed and made available under the terms and conditions of the BSD License
+ *  which accompanies this distribution.  The full text of the license may be found at
+ *  http://opensource.org/licenses/bsd-license.php
+ *
+ *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ *
+ **/
+
+#ifndef _PLATFORM_BM_H_
+#define _PLATFORM_BM_H_
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+/**
+  Use SystemTable Conout to stop video based Simple Text Out consoles from
+  going to the video device. Put up LogoFile on every video device that is a
+  console.
+
+  @param[in]  LogoFile   File name of logo to display on the center of the
+                         screen.
+
+  @retval EFI_SUCCESS     ConsoleControl has been flipped to graphics and logo
+                          displayed.
+  @retval EFI_UNSUPPORTED Logo not found
+**/
+EFI_STATUS
+EnableQuietBoot (
+  IN  EFI_GUID  *LogoFile
+  );
+
+/**
+  Use SystemTable Conout to turn on video based Simple Text Out consoles. The
+  Simple Text Out screens will now be synced up with all non video output
+  devices
+
+  @retval EFI_SUCCESS     UGA devices are back in text mode and synced up.
+**/
+EFI_STATUS
+DisableQuietBoot (
+  VOID
+  );
+
+#endif // _PLATFORM_BM_H_
diff --git a/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf b/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
new file mode 100644
index 000000000000..d96d8669b52a
--- /dev/null
+++ b/Platform/Raspberry/Pi3/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
@@ -0,0 +1,90 @@
+#/** @file
+#
+#  Copyright (c) 2017-2018, Andrei Warkentin <andrey.warkentin@gmail.com>
+#  Copyright (c) 2016, Linaro Ltd. All rights reserved.
+#  Copyright (c) 2015-2016, Red Hat, Inc.
+#  Copyright (c) 2014, ARM Ltd. All rights reserved.
+#  Copyright (c) 2007-2014, Intel Corporation. All rights reserved.
+#
+#  This program and the accompanying materials are licensed and made available
+#  under the terms and conditions of the BSD License which accompanies this
+#  distribution. The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php
+#
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
+#  IMPLIED.
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x0001001A
+  BASE_NAME                      = PlatformBootManagerLib
+  FILE_GUID                      = 92FD2DE3-B9CB-4B35-8141-42AD34D73C9F
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PlatformBootManagerLib|DXE_DRIVER
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = AARCH64
+#
+
+[Sources]
+  PlatformBm.c
+
+[Packages]
+  MdeModulePkg/MdeModulePkg.dec
+  MdePkg/MdePkg.dec
+  ShellPkg/ShellPkg.dec
+  Platform/Raspberry/Pi3/RPi3.dec
+
+[LibraryClasses]
+  BaseLib
+  BaseMemoryLib
+  BootLogoLib
+  CapsuleLib
+  DebugLib
+  DevicePathLib
+  DxeServicesLib
+  HobLib
+  MemoryAllocationLib
+  PcdLib
+  PrintLib
+  UefiBootManagerLib
+  UefiBootServicesTableLib
+  UefiLib
+
+[FeaturePcd]
+  gEfiMdePkgTokenSpaceGuid.PcdUgaConsumeSupport
+
+[FixedPcd]
+  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate
+  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits
+  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity
+  gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits
+  gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType
+
+[Pcd]
+  gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
+  gRaspberryPiTokenSpaceGuid.PcdDebugShowUEFIExit
+  gRaspberryPiTokenSpaceGuid.PcdSdIsArasan
+
+[Guids]
+  gEfiFileInfoGuid
+  gEfiFileSystemInfoGuid
+  gEfiFileSystemVolumeLabelInfoIdGuid
+  gEfiEndOfDxeEventGroupGuid
+  gEfiTtyTermGuid
+  gUefiShellFileGuid
+  gEfiEventExitBootServicesGuid
+
+[Protocols]
+  gEfiDevicePathProtocolGuid
+  gEfiGraphicsOutputProtocolGuid
+  gEfiLoadedImageProtocolGuid
+  gEfiSimpleFileSystemProtocolGuid
+  gEsrtManagementProtocolGuid
+  gEfiUsb2HcProtocolGuid
+  gEfiBootLogoProtocolGuid
diff --git a/Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.c b/Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.c
new file mode 100644
index 000000000000..3f8521a35190
--- /dev/null
+++ b/Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.c
@@ -0,0 +1,120 @@
+/** @file
+ *
+ *  Copyright (c) 2019, Andrey Warkentin <andrey.warkentin@gmail.com>
+ *
+ *  This program and the accompanying materials
+ *  are licensed and made available under the terms and conditions of the BSD License
+ *  which accompanies this distribution.  The full text of the license may be found at
+ *  http://opensource.org/licenses/bsd-license.php
+ *
+ *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ *
+ **/
+
+#include <Library/PrintLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/UefiBootManagerLib.h>
+#include <Protocol/DevicePath.h>
+
+#define ARASAN_MMC_DXE_FILE_GUID  \
+  { 0x100c2cfa, 0xb586, 0x4198, { 0x9b, 0x4c, 0x16, 0x83, 0xd1, 0x95, 0xb1, 0xda } }
+
+#define SDHOST_MMC_DXE_FILE_GUID  \
+  { 0x58abd787, 0xf64d, 0x4ca2, { 0xa0, 0x34, 0xb9, 0xac, 0x2d, 0x5a, 0xd0, 0xcf } }
+
+#define DP_NODE_LEN(Type) { (UINT8)sizeof (Type), (UINT8)(sizeof (Type) >> 8) }
+
+typedef struct {
+  VENDOR_DEVICE_PATH       Custom;
+  EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
+} PLATFORM_SD_DEV;
+
+STATIC PLATFORM_SD_DEV mArasan = {
+  //
+  // VENDOR_DEVICE_PATH ArasanMMCHostDxe
+  //
+  {
+    { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
+    ARASAN_MMC_DXE_FILE_GUID
+  },
+
+  //
+  // EFI_DEVICE_PATH_PROTOCOL End
+  //
+  {
+    END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+  }
+};
+
+STATIC PLATFORM_SD_DEV mSDHost = {
+  //
+  // VENDOR_DEVICE_PATH SdHostDxe
+  //
+  {
+    { HARDWARE_DEVICE_PATH, HW_VENDOR_DP, DP_NODE_LEN (VENDOR_DEVICE_PATH) },
+    SDHOST_MMC_DXE_FILE_GUID
+  },
+
+  //
+  // EFI_DEVICE_PATH_PROTOCOL End
+  //
+  {
+    END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    DP_NODE_LEN (EFI_DEVICE_PATH_PROTOCOL)
+  }
+};
+
+STATIC
+CHAR16*
+EFIAPI
+BootDescriptionHandler (
+  IN EFI_HANDLE Handle,
+  IN CONST CHAR16 *DefaultDescription
+  )
+{
+  CHAR16 *Name;
+  EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+
+  DevicePath = DevicePathFromHandle (Handle);
+  if (CompareMem (&mArasan, DevicePath, GetDevicePathSize (DevicePath)) == 0) {
+    Name = L"SD/MMC on Arasan SDHCI";
+  } else if (CompareMem (&mSDHost, DevicePath, GetDevicePathSize (DevicePath)) == 0) {
+    Name = L"SD/MMC on Broadcom SDHOST";
+  } else {
+    return NULL;
+  }
+
+  return AllocateCopyPool(StrSize (Name), Name);
+}
+
+EFI_STATUS
+EFIAPI
+PlatformUiAppLibConstructor (
+  IN EFI_HANDLE ImageHandle,
+  IN EFI_SYSTEM_TABLE *SystemTable
+  )
+{
+  EFI_STATUS Status;
+
+  Status = EfiBootManagerRegisterBootDescriptionHandler(BootDescriptionHandler);
+  ASSERT_EFI_ERROR (Status);
+
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+PlatformUiAppLibDestructor (
+  IN EFI_HANDLE ImageHandle,
+  IN EFI_SYSTEM_TABLE *SystemTable
+  )
+{
+  return EFI_SUCCESS;
+}
diff --git a/Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.inf b/Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.inf
new file mode 100644
index 000000000000..8e7625314f09
--- /dev/null
+++ b/Platform/Raspberry/Pi3/Library/PlatformUiAppLib/PlatformUiAppLib.inf
@@ -0,0 +1,34 @@
+[Defines]
+  INF_VERSION                    = 0x0001001A
+  BASE_NAME                      = PlatformUiAppLib
+  FILE_GUID                      = CCB2DCE1-5EC9-42CB-88C5-D349E134C9FC
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = NULL|DXE_DRIVER UEFI_APPLICATION
+  CONSTRUCTOR                    = PlatformUiAppLibConstructor
+  DESTRUCTOR                     = PlatformUiAppLibDestructor
+
+[Sources]
+  PlatformUiAppLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  Platform/Raspberry/Pi3/RPi3.dec
+
+[LibraryClasses]
+  UefiLib
+  UefiBootServicesTableLib
+  BaseMemoryLib
+  DebugLib
+  PrintLib
+  UefiBootManagerLib
+  MemoryAllocationLib
+
+[Guids]
+
+[Protocols]
+
+[FeaturePcd]
+
+[Pcd]
-- 
2.17.0.windows.1