[PATCH edk2-platforms v4 15/17] ARM/VExpressPkg: New DP500/DP550/DP650 platform library

[Girish Pathak <girish.pathak@arm.com>]

From: Girish Pathak <girish.pathak at arm.com>

This change adds LcdPlatformLib implementation for Arm Mali
DP500/DP500/DP650 display processors for models (with DP550 support).

NOTE: Versions for actual hardware are liable to require extra handling
for clock input changes, etc.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Girish Pathak <girish.pathak@arm.com>
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
---

Notes:
    v3:
    - Please fix the funky indentation       [Ard]
    
      Done                                   [Girish]
    
    - Add  EFI_MEMORY_XP                     [Ard]
    
      Done                                   [Girish]

 Platform/ARM/VExpressPkg/ArmVExpressPkg.dec                            |   3 +-
 Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.c           | 387 ++++++++++++++++++++
 Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.inf         |  43 +++
 Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf |   3 +
 Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c          |  12 +-
 5 files changed, 446 insertions(+), 2 deletions(-)

diff --git a/Platform/ARM/VExpressPkg/ArmVExpressPkg.dec b/Platform/ARM/VExpressPkg/ArmVExpressPkg.dec
index 695553a94f7f7e963b5db995c5e54f1ae1559daf..ac77540362d0775bed45f517306b98ea16bfb170 100644
--- a/Platform/ARM/VExpressPkg/ArmVExpressPkg.dec
+++ b/Platform/ARM/VExpressPkg/ArmVExpressPkg.dec
@@ -1,7 +1,7 @@
 #/** @file
 # Arm Versatile Express package.
 #
-#  Copyright (c) 2012-2015, ARM Limited. All rights reserved.
+#  Copyright (c) 2012-2018, ARM Limited. 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
@@ -51,6 +51,7 @@ [PcdsFixedAtBuild.common]
   gArmVExpressTokenSpaceGuid.PcdPL111LcdVideoModeOscId|1|UINT32|0x00000003
 
   gArmVExpressTokenSpaceGuid.PcdHdLcdVideoModeOscId|0|UINT32|0x00000005
+  gArmVExpressTokenSpaceGuid.PcdArmMaliDpMaxMode|0|UINT32|0x00000008
 
   #
   # Device path of block device on which Fastboot will flash partitions
diff --git a/Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.c b/Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.c
new file mode 100644
index 0000000000000000000000000000000000000000..04ad341d14650b10b92a38a6ff68108871feef9e
--- /dev/null
+++ b/Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.c
@@ -0,0 +1,387 @@
+/** @file
+
+  The file contains Arm Mali DP platform specific implementation.
+
+  Copyright (c) 2017-2018, Arm Limited. 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 <PiDxe.h>
+#include <ArmPlatform.h>
+#include <Library/DebugLib.h>
+#include <Library/LcdPlatformLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Protocol/Cpu.h>
+
+/** Check an address is within 40 bits.
+
+  The ARM Mali DP framebuffer address size can not be wider than 40 bits
+**/
+#define  DP_VALID_BASE_ADDR(Address)  ((Address >> 40) == 0)
+
+typedef struct {
+  UINT32                      OscFreq;
+  SCAN_TIMINGS                Horizontal;
+  SCAN_TIMINGS                Vertical;
+} DISPLAY_MODE;
+
+/** The display modes implemented by this driver.
+
+  On Models, the OSC frequencies (listed for each mode below) are not used.
+  However these frequencies are useful on hardware plaforms where related
+  clock (or PLL) settings are based on these pixel clocks.
+
+  Since the clock settings are defined externally, the driver must
+  communicate pixel clock frequencies to relevant modules
+  responsible for setting clocks. e.g. SCP.
+**/
+STATIC DISPLAY_MODE mDisplayModes[] = {
+  {
+    // Mode 0 : VGA : 640 x 480 x 24 bpp.
+    VGA_OSC_FREQUENCY,
+    {VGA_H_RES_PIXELS, VGA_H_SYNC, VGA_H_BACK_PORCH, VGA_H_FRONT_PORCH},
+    {VGA_V_RES_PIXELS, VGA_V_SYNC, VGA_V_BACK_PORCH, VGA_V_FRONT_PORCH}
+  },
+  {
+    // Mode 1 : WVGA : 800 x 480 x 24 bpp.
+    WVGA_OSC_FREQUENCY,
+    {WVGA_H_RES_PIXELS, WVGA_H_SYNC, WVGA_H_BACK_PORCH, WVGA_H_FRONT_PORCH},
+    {WVGA_V_RES_PIXELS, WVGA_V_SYNC, WVGA_V_BACK_PORCH, WVGA_V_FRONT_PORCH}
+  },
+  {
+    // Mode 2 : SVGA : 800 x 600 x 24 bpp.
+    SVGA_OSC_FREQUENCY,
+    {SVGA_H_RES_PIXELS, SVGA_H_SYNC, SVGA_H_BACK_PORCH, SVGA_H_FRONT_PORCH},
+    {SVGA_V_RES_PIXELS, SVGA_V_SYNC, SVGA_V_BACK_PORCH, SVGA_V_FRONT_PORCH}
+  },
+  {
+    // Mode 3 : QHD : 960 x 540 x 24 bpp.
+    QHD_OSC_FREQUENCY,
+    {QHD_H_RES_PIXELS, QHD_H_SYNC, QHD_H_BACK_PORCH, QHD_H_FRONT_PORCH},
+    {QHD_V_RES_PIXELS, QHD_V_SYNC, QHD_V_BACK_PORCH, QHD_V_FRONT_PORCH}
+  },
+  {
+    // Mode 4 : WSVGA : 1024 x 600 x 24 bpp.
+    WSVGA_OSC_FREQUENCY,
+    {WSVGA_H_RES_PIXELS, WSVGA_H_SYNC, WSVGA_H_BACK_PORCH, WSVGA_H_FRONT_PORCH},
+    {WSVGA_V_RES_PIXELS, WSVGA_V_SYNC, WSVGA_V_BACK_PORCH, WSVGA_V_FRONT_PORCH}
+  },
+  {
+    // Mode 5 : XGA : 1024 x 768 x 24 bpp.
+    XGA_OSC_FREQUENCY,
+    {XGA_H_RES_PIXELS, XGA_H_SYNC, XGA_H_BACK_PORCH, XGA_H_FRONT_PORCH},
+    {XGA_V_RES_PIXELS, XGA_V_SYNC, XGA_V_BACK_PORCH, XGA_V_FRONT_PORCH}
+  },
+  {
+    // Mode 6 : HD : 1280 x 720 x 24 bpp.
+    HD720_OSC_FREQUENCY,
+    {HD720_H_RES_PIXELS, HD720_H_SYNC, HD720_H_BACK_PORCH, HD720_H_FRONT_PORCH},
+    {HD720_V_RES_PIXELS, HD720_V_SYNC, HD720_V_BACK_PORCH, HD720_V_FRONT_PORCH}
+  },
+  {
+    // Mode 7 : WXGA : 1280 x 800 x 24 bpp.
+    WXGA_OSC_FREQUENCY,
+    {WXGA_H_RES_PIXELS, WXGA_H_SYNC, WXGA_H_BACK_PORCH, WXGA_H_FRONT_PORCH},
+    {WXGA_V_RES_PIXELS, WXGA_V_SYNC, WXGA_V_BACK_PORCH, WXGA_V_FRONT_PORCH}
+  },
+  { // Mode 8 : SXGA : 1280 x 1024 x 24 bpp.
+    SXGA_OSC_FREQUENCY,
+    {SXGA_H_RES_PIXELS, SXGA_H_SYNC, SXGA_H_BACK_PORCH, SXGA_H_FRONT_PORCH},
+    {SXGA_V_RES_PIXELS, SXGA_V_SYNC, SXGA_V_BACK_PORCH, SXGA_V_FRONT_PORCH}
+  },
+  { // Mode 9 : WSXGA+ : 1680 x 1050 x 24 bpp.
+    WSXGA_OSC_FREQUENCY,
+    {WSXGA_H_RES_PIXELS, WSXGA_H_SYNC, WSXGA_H_BACK_PORCH, WSXGA_H_FRONT_PORCH},
+    {WSXGA_V_RES_PIXELS,WSXGA_V_SYNC, WSXGA_V_BACK_PORCH, WSXGA_V_FRONT_PORCH}
+  },
+  {
+    // Mode 10 : HD : 1920 x 1080 x 24 bpp.
+    HD_OSC_FREQUENCY,
+    {HD_H_RES_PIXELS, HD_H_SYNC, HD_H_BACK_PORCH, HD_H_FRONT_PORCH},
+    {HD_V_RES_PIXELS, HD_V_SYNC, HD_V_BACK_PORCH, HD_V_FRONT_PORCH}
+  }
+};
+
+/** If PcdArmMaliDpMaxMode is 0, platform supports full range of modes
+  else platform supports modes from 0 to PcdArmMaliDpMaxMode - 1
+**/
+STATIC CONST UINT32 mMaxMode = ((FixedPcdGet32 (PcdArmMaliDpMaxMode) != 0)
+                                   ? FixedPcdGet32 (PcdArmMaliDpMaxMode)
+                                   : sizeof (mDisplayModes) / sizeof (DISPLAY_MODE));
+
+/** Platform related initialization function.
+
+  @param[in] Handle             Handle to the instance of the device.
+
+  @retval EFI_SUCCESS           Initialization of platform library successful.
+  @retval EFI_UNSUPPORTED       PcdGopPixelFormat must be
+                                PixelRedGreenBlueReserved8BitPerColor OR
+                                PixelBlueGreenRedReserved8BitPerColor
+                                any other format is not supported.
+**/
+EFI_STATUS
+LcdPlatformInitializeDisplay (
+  IN EFI_HANDLE  Handle
+  )
+{
+  EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;
+
+  (VOID)Handle;
+
+  // PixelBitMask and PixelBltOnly pixel formats are not supported
+  PixelFormat = FixedPcdGet32 (PcdGopPixelFormat);
+  if (PixelFormat != PixelRedGreenBlueReserved8BitPerColor &&
+      PixelFormat != PixelBlueGreenRedReserved8BitPerColor) {
+
+    ASSERT (PixelFormat == PixelRedGreenBlueReserved8BitPerColor ||
+      PixelFormat == PixelBlueGreenRedReserved8BitPerColor);
+   return EFI_UNSUPPORTED;
+  }
+
+  return EFI_SUCCESS;
+}
+
+/* Internal helper function to allocate memory if memory is not already
+  reserved for framebuffer
+
+  @param[in]  VramSize          Requested framebuffer size in bytes.
+  @param[out] VramBaseAddress   Pointer to memory allocated for framebuffer.
+
+  @retval EFI_SUCCESS           Framebuffer memory allocated successfully.
+  @retval EFI_UNSUPPORTED       Allocated address wider than 40 bits.
+  @retval !EFI_SUCCESS          Other errors.
+**/
+STATIC
+EFI_STATUS
+GetVram (
+  IN  UINTN                   VramSize,
+  OUT EFI_PHYSICAL_ADDRESS *  VramBaseAddress
+  )
+{
+  EFI_STATUS             Status;
+  EFI_CPU_ARCH_PROTOCOL  *Cpu;
+
+  *VramBaseAddress = FixedPcdGet64 (PcdArmLcdDdrFrameBufferBase);
+
+  // Check if memory is already reserved for the framebuffer.
+  if (*VramBaseAddress != 0) {
+    // ARM Mali DP framebuffer base address can not be wider than 40 bits.
+    if (!DP_VALID_BASE_ADDR (*VramBaseAddress)) {
+      ASSERT (DP_VALID_BASE_ADDR (*VramBaseAddress));
+      Status = EFI_UNSUPPORTED;
+    } else {
+      Status = EFI_SUCCESS;
+    }
+  } else {
+    // If not already reserved, attempt to allocate the VRAM from the DRAM.
+    Status = gBS->AllocatePages (
+                    AllocateAnyPages,
+                    EfiReservedMemoryType,
+                    EFI_SIZE_TO_PAGES (VramSize),
+                    VramBaseAddress
+                    );
+    if (EFI_ERROR (Status)) {
+      DEBUG ((DEBUG_ERROR, "ArmMaliDpLib: Failed to allocate framebuffer.\n"));
+      ASSERT_EFI_ERROR (Status);
+      return Status;
+    }
+
+    // ARM Mali DP framebuffer base address can not be wider than 40 bits.
+    if (!DP_VALID_BASE_ADDR (*VramBaseAddress)) {
+      gBS->FreePages (*VramBaseAddress, EFI_SIZE_TO_PAGES (VramSize));
+      ASSERT (DP_VALID_BASE_ADDR (*VramBaseAddress));
+      return EFI_UNSUPPORTED;
+    }
+
+    // Ensure the Cpu architectural protocol is already installed
+    Status = gBS->LocateProtocol (
+                    &gEfiCpuArchProtocolGuid,
+                    NULL,
+                    (VOID **)&Cpu
+                    );
+    if (!EFI_ERROR (Status)) {
+      // The VRAM is inside the DRAM, which is cacheable.
+      // Mark the VRAM as write-combining (uncached) and non-executable.
+      Status = Cpu->SetMemoryAttributes (
+                      Cpu,
+                      *VramBaseAddress,
+                      VramSize,
+                      EFI_MEMORY_WC | EFI_MEMORY_XP
+                      );
+    }
+    if (EFI_ERROR (Status)) {
+      ASSERT_EFI_ERROR (Status);
+      gBS->FreePages (*VramBaseAddress, EFI_SIZE_TO_PAGES (VramSize));
+    }
+  }
+
+  return Status;
+}
+
+/** Allocate VRAM memory in DRAM for the framebuffer
+  (unless it is reserved already).
+
+  The allocated address can be used to set the framebuffer as a base buffer
+  address for any layer of the ARM Mali DP.
+
+  @param[out] VramBaseAddress     A pointer to the framebuffer address.
+  @param[out] VramSize            A pointer to the size of the frame
+                                  buffer in bytes
+
+  @retval EFI_SUCCESS             Framebuffer memory allocation success.
+  @retval EFI_UNSUPPORTED         Allocated address wider than 40 bits
+  @retval !EFI_SUCCESS            Other errors.
+**/
+EFI_STATUS
+LcdPlatformGetVram (
+  OUT EFI_PHYSICAL_ADDRESS * VramBaseAddress,
+  OUT UINTN                * VramSize
+  )
+{
+  ASSERT (VramBaseAddress != NULL);
+  ASSERT (VramSize != NULL);
+
+  // Set the VRAM size.
+  *VramSize = (UINTN)FixedPcdGet32 (PcdArmLcdDdrFrameBufferSize);
+
+  return GetVram (*VramSize, VramBaseAddress);
+}
+
+/** Return total number of modes supported.
+
+  Note: Valid mode numbers are 0 to MaxMode - 1
+  See Section 12.9 of the UEFI Specification 2.7
+
+  @retval UINT32             Mode Number.
+**/
+UINT32
+LcdPlatformGetMaxMode (VOID)
+{
+  return  mMaxMode;
+}
+
+/** Set the requested display mode.
+
+  @param[in] ModeNumber            Mode Number.
+
+  @retval EFI_SUCCESS              Mode set successful.
+  @retval EFI_INVALID_PARAMETER    Requested mode not found.
+**/
+EFI_STATUS
+LcdPlatformSetMode (
+  IN UINT32 ModeNumber
+  )
+{
+  if (ModeNumber >= mMaxMode) {
+    ASSERT (ModeNumber < mMaxMode);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  // On models, platform specific clock/mux settings are not required.
+  // Display controller specific settings for Mali DP are done in LcdSetMode.
+  return EFI_SUCCESS;
+}
+
+/** Return information for the requested mode number.
+
+  @param[in]  ModeNumber          Mode Number.
+  @param[out] Info                Pointer for returned mode information
+                                  (on success).
+
+  @retval EFI_SUCCESS             Display mode information of the requested
+                                  mode returned successfully.
+  @retval EFI_INVALID_PARAMETER   Requested mode not found.
+**/
+EFI_STATUS
+LcdPlatformQueryMode (
+  IN  UINT32                                 ModeNumber,
+  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION * Info
+  )
+{
+  if (ModeNumber >= mMaxMode) {
+    ASSERT (ModeNumber < mMaxMode);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  ASSERT (Info != NULL);
+
+  Info->Version = 0;
+  Info->HorizontalResolution = mDisplayModes[ModeNumber].Horizontal.Resolution;
+  Info->VerticalResolution = mDisplayModes[ModeNumber].Vertical.Resolution;
+  Info->PixelsPerScanLine = mDisplayModes[ModeNumber].Horizontal.Resolution;
+
+  Info->PixelFormat = FixedPcdGet32 (PcdGopPixelFormat);
+
+  return EFI_SUCCESS;
+}
+
+/** Return the display timing information for the requested mode number.
+
+  @param[in]  ModeNumber         Mode Number.
+
+  @param[out] Horizontal         Pointer to horizontal timing parameters.
+                                 (Resolution, Sync, Back porch, Front porch)
+  @param[out] Vertical           Pointer to vertical timing parameters.
+                                 (Resolution, Sync, Back porch, Front porch)
+
+  @retval EFI_SUCCESS             Display timing information of the requested
+                                  mode returned successfully.
+  @retval EFI_INVALID_PARAMETER   Requested mode not found.
+**/
+EFI_STATUS
+LcdPlatformGetTimings (
+  IN  UINT32                ModeNumber,
+  OUT SCAN_TIMINGS          ** Horizontal,
+  OUT SCAN_TIMINGS          ** Vertical
+  )
+{
+  ASSERT (Horizontal != NULL);
+  ASSERT (Vertical != NULL);
+
+  if (ModeNumber >= mMaxMode) {
+    ASSERT (ModeNumber < mMaxMode);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  *Horizontal = &mDisplayModes[ModeNumber].Horizontal;
+  *Vertical = &mDisplayModes[ModeNumber].Vertical;
+
+  return EFI_SUCCESS;
+}
+
+/** Return bits per pixel information for a mode number.
+
+  @param[in]  ModeNumber          Mode Number.
+  @param[out] Bpp                 Pointer to bits per pixel information.
+
+  @retval EFI_SUCCESS             Bits per pixel information of the display
+                                  mode returned successfully.
+  @retval EFI_INVALID_PARAMETER   Requested mode not found.
+**/
+EFI_STATUS
+LcdPlatformGetBpp (
+  IN  UINT32    ModeNumber,
+  OUT LCD_BPP * Bpp
+  )
+{
+  ASSERT (Bpp != NULL);
+  // Check valid ModeNumber.
+  if (ModeNumber >= mMaxMode) {
+    ASSERT (ModeNumber < mMaxMode);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  *Bpp = LCD_BITS_PER_PIXEL_24;
+
+  return EFI_SUCCESS;
+}
diff --git a/Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.inf b/Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.inf
new file mode 100644
index 0000000000000000000000000000000000000000..78f7d307b70701194b7121f16529ab10a6d52835
--- /dev/null
+++ b/Platform/ARM/VExpressPkg/Library/ArmMaliDpLib/ArmMaliDpLib.inf
@@ -0,0 +1,43 @@
+#/** @file
+#  Component description file for ArmMaliDpLib module
+#
+#  Copyright (c) 2017-2018, Arm Limited. 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                    = 0x00010019
+  BASE_NAME                      = ArmMaliDpLib
+  FILE_GUID                      = 36C47FED-2F3F-49C7-89CE-31B13F0431D8
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = LcdPlatformLib
+
+[Sources.common]
+  ArmMaliDpLib.c
+
+[Packages]
+  ArmPlatformPkg/ArmPlatformPkg.dec
+  MdePkg/MdePkg.dec
+  Platform/ARM/VExpressPkg/ArmVExpressPkg.dec
+
+[LibraryClasses]
+  BaseLib
+
+[FixedPcd.common]
+  gArmPlatformTokenSpaceGuid.PcdArmLcdDdrFrameBufferBase
+  gArmPlatformTokenSpaceGuid.PcdArmLcdDdrFrameBufferSize
+  gArmPlatformTokenSpaceGuid.PcdGopPixelFormat
+
+  # MaxMode must be one number higher than the actual max mode,
+  # i.e. for actual maximum mode 2, set the value to 3.
+  # See Section 12.9 of the UEFI Specification 2.7
+  gArmVExpressTokenSpaceGuid.PcdArmMaliDpMaxMode
+
diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
index b025abd98b5e654323b7821ac353ad920e2e6421..53898c5e957eb1a49cf063fa759d5a9ca62e7954 100644
--- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
+++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
@@ -57,5 +57,8 @@ [FixedPcd]
   gArmPlatformTokenSpaceGuid.PcdArmLcdDdrFrameBufferBase
   gArmPlatformTokenSpaceGuid.PcdArmLcdDdrFrameBufferSize
 
+  gArmPlatformTokenSpaceGuid.PcdArmMaliDpBase
+  gArmPlatformTokenSpaceGuid.PcdArmMaliDpMemoryRegionLength
+
 [Ppis]
   gArmMpCoreInfoPpiGuid
diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
index 1d5fefc21726ba1b05d90e0e47677575d7fa2034..c8eefa0cf28b06d19929912d28d87bd78ed7d871 100644
--- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
+++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
@@ -20,8 +20,10 @@
 #include <Library/MemoryAllocationLib.h>
 #include <ArmPlatform.h>
 
+#define DP_BASE_DESCRIPTOR      ((FixedPcdGet64 (PcdArmMaliDpBase) != 0) ? 1 : 0)
+
 // Number of Virtual Memory Map Descriptors
-#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          9
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (9 + DP_BASE_DESCRIPTOR)
 
 // DDR attributes
 #define DDR_ATTRIBUTES_CACHED   ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
@@ -157,6 +159,14 @@ ArmPlatformGetVirtualMemoryMap (
     VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED;
   }
 
+  if (FixedPcdGet64 (PcdArmMaliDpBase) != 0) {
+    // DP500/DP550/DP650 peripheral memory region
+    VirtualMemoryTable[++Index].PhysicalBase = FixedPcdGet64 (PcdArmMaliDpBase);
+    VirtualMemoryTable[Index].VirtualBase = FixedPcdGet64 (PcdArmMaliDpBase);
+    VirtualMemoryTable[Index].Length = FixedPcdGet32 (PcdArmMaliDpMemoryRegionLength);
+    VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+  }
+
   // Map sparse memory region if present
   if (HasSparseMemory) {
     VirtualMemoryTable[++Index].PhysicalBase = SparseMemoryBase;
-- 
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'