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From: Alexei Fedorov <Alexei.Fedorov@arm.com>
To: Evan Lloyd <Evan.Lloyd@arm.com>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: "\"Matteo.Carlini@arm.com\"@arm.com"
	<"Matteo.Carlini@arm.com"@arm.com>,
	"\"leif.lindholm@linaro.org\"@arm.com"
	<"leif.lindholm@linaro.org"@arm.com>,
	"\"nd@arm.com\"@arm.com" <"nd@arm.com"@arm.com>,
	"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>,
	Arvind Chauhan <Arvind.Chauhan@arm.com>,
	"\"ard.biesheuvel@linaro.org\"@arm.com"
	<"ard.biesheuvel@linaro.org"@arm.com>,
	Thomas Abraham <thomas.abraham@arm.com>,
	Sami Mujawar <Sami.Mujawar@arm.com>,
	Mitch Ishihara <Mitch.Ishihara@arm.com>
Subject: Re: [PATCH edk2-platforms v2 15/18] ARM/VExpressPkg: New DP500/DP550/DP650 platform library.
Date: Wed, 24 Jan 2018 11:27:11 +0000	[thread overview]
Message-ID: <DB5PR08MB101446AEF20977FD8D56779A9AE20@DB5PR08MB1014.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <HE1PR08MB26844DC82BDAE4E654751D458B130@HE1PR08MB2684.eurprd08.prod.outlook.com>

Hi Ard,


You wrote:


> > +  Status = gDS->SetMemorySpaceAttributes (
> > +                  *VramBaseAddress,
> > +                  *VramSize,
> > +                  EFI_MEMORY_WC
>
> Please add EFI_MEMORY_XP here
>


Setting EFI_MEMORY_XP causes assertion because  gDS->SetMemorySpaceAttributes() returns Unsupported in edk2\MdeModulePkg\Core\Dxe\Gcd\Gcd.c  with Status set at line #834:


      if ((Entry->Capabilities & Attributes) != Attributes) {

        //***AF
        DEBUG ((DEBUG_GCD, " @%d EFI_UNSUPPORTED: Capabilitie=0x%lX Attributes=0x%lX\n",
                __LINE__, Entry->Capabilities, Attributes));

        Status = EFI_UNSUPPORTED;
        goto Done;
      }

because Entry->Capabilities don't have EFI_MEMORY_XP set, see debug output below:


===================

 Framebuffer @0xF98A4000 0x4000000
GCD:SetMemorySpaceAttributes(Base=00000000F98A4000,Length=0000000004000000)
  Attributes  = 0000000000004002
 @834 EFI_UNSUPPORTED: Capabilities=0x800000000000000E Attributes=0x4002
  Status = Unsupported
GCDMemType Range                             Capabilities     Attributes
========== ================================= ================ ================
NonExist   0000000000000000-0000000007FFFFFF 0000000000000000 0000000000000000
MMIO       0000000008000000-000000000BFFFFFF C000000000000001 8000000000000001
NonExist   000000000C000000-000000001C16FFFF 0000000000000000 0000000000000000
MMIO       000000001C170000-000000001C170FFF C000000000000001 8000000000000001
NonExist   000000001C171000-000000004FFFFFFF 0000000000000000 0000000000000000
MMIO       0000000050000000-00000000501FFFFF C000000000000001 0000000000000001*
MMIO       0000000050200000-0000000057FFFFFF C000000000000001 0000000000000001
NonExist   0000000058000000-000000007FFFFFFF 0000000000000000 0000000000000000
SystemMem  0000000080000000-00000000FEFFFFFF 800000000000000E 0000000000000008*
NonExist   00000000FF000000-000000087FFFFFFF 0000000000000000 0000000000000000
SystemMem  0000000880000000-00000009FFFFFFFF 800000000000000E 0000000000000008*
NonExist   0000000A00000000-0000003FFFFFFFFF 0000000000000000 0000000000000000
MMIO       0000004000000000-00000040000FFFFF C000000000000001 0000000000000001*
MMIO       0000004000100000-00000040FFFFFFFF C000000000000001 0000000000000001
NonExist   0000004100000000-0000FFFFFFFFFFFF 0000000000000000 0000000000000000

ASSERT_EFI_ERROR (Status = Unsupported)
ASSERT [HdLcdGraphicsDxe] n:\edk2\ArmPlatformPkg\ArmJunoPkg\Library\HdLcdArmJunoLib\HdLcdArmJuno.c(254): !EFI_ERROR (Status)
===============

If  gDS->SetMemorySpaceAttributes() call is replaced with Cpu->SetMemoryAttributes(), attributes are set successfully with eXecute bit for frame buffer being cleared.


Alexei.

________________________________
From: edk2-devel <edk2-devel-bounces@lists.01.org> on behalf of Evan Lloyd <Evan.Lloyd@arm.com>
Sent: 08 January 2018 18:51:12
To: Ard Biesheuvel
Cc: "Matteo.Carlini@arm.com"@arm.com; "leif.lindholm@linaro.org"@arm.com; "nd@arm.com"@arm.com; edk2-devel@lists.01.org; Arvind Chauhan; "ard.biesheuvel@linaro.org"@arm.com; Thomas Abraham
Subject: Re: [edk2] [PATCH edk2-platforms v2 15/18] ARM/VExpressPkg: New DP500/DP550/DP650 platform library.



> -----Original Message-----
> From: Ard Biesheuvel [mailto:ard.biesheuvel@linaro.org]
> Sent: 23 December 2017 16:07
> To: Evan Lloyd <Evan.Lloyd@arm.com>
> Cc: edk2-devel@lists.01.org; Arvind Chauhan <Arvind.Chauhan@arm.com>;
> Daniil Egranov <Daniil.Egranov@arm.com>; Thomas Abraham
> <thomas.abraham@arm.com>; "ard.biesheuvel@linaro.org"@arm.com;
> "leif.lindholm@linaro.org"@arm.com;
> "Matteo.Carlini@arm.com"@arm.com; "nd@arm.com"@arm.com
> Subject: Re: [PATCH edk2-platforms v2 15/18] ARM/VExpressPkg: New
> DP500/DP550/DP650 platform library.
>
> On 22 December 2017 at 19:08,  <evan.lloyd@arm.com> wrote:
> > From: Girish Pathak <girish.pathak at arm.com>
> >
...
> > +
> > +/* 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                 CONST  VramSize,
> > +  OUT EFI_PHYSICAL_ADDRESS *CONST  VramBaseAddress
> > +  )
> > +{
> > +  EFI_STATUS Status;
> > +
> > +  // Check if memory is already reserved for the framebuffer.
> > +#if (FixedPcdGet64 (PcdArmLcdDdrFrameBufferBase) != 0)
> > +
>
> Please don't use CPP conditionals for control flow
>
> > +#if (!DP_VALID_BASE_ADDR (FixedPcdGet64
> > +(PcdArmLcdDdrFrameBufferBase))) #error ARM Mali DP framebuffer
> base address cannot be wider than 40 bits.
> > +#else
> > +  *VramBaseAddress =
> > +    (EFI_PHYSICAL_ADDRESS)FixedPcdGet64
> > +(PcdArmLcdDdrFrameBufferBase);
> > +
> > +  Status = EFI_SUCCESS;
> > +#endif
> > +
> > +#else
> > +  // If not already reserved, attempt to allocate the VRAM from the
> DRAM.
> > +  Status = gBS->AllocatePages (
> > +                  AllocateAnyPages,
> > +                  EfiBootServicesData,
> > +                  EFI_SIZE_TO_PAGES (*VramSize),
> > +                  VramBaseAddress
> > +                  );
> > +  if (EFI_ERROR (Status)) {
> > +    DEBUG ((DEBUG_ERROR, "ArmMaliDpLib: Failed to allocate
> framebuffer.\n"));
> > +    ASSERT (FALSE);
> > +    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;
> > +  }
> > +
> > +  // Mark the VRAM as write-combining. The VRAM is inside the DRAM,
> > + which is  // cacheable, for ARM/AArch64 EFI_MEMORY_WC memory is
> actually uncached.
> > +  Status = gDS->SetMemorySpaceAttributes (
> > +                  *VramBaseAddress,
> > +                  *VramSize,
> > +                  EFI_MEMORY_WC
>
> Please add EFI_MEMORY_XP here
>

 [[Evan Lloyd]] We can do that, happily.  However, in looking at this we found that the UEFI spec has in "2.3.6 AArch64 Platforms", section "2.3.6.1 Memory types":
EFI_MEMORY_XP, ...                                                                             Not used or defined

Does that suggest we need a minor spec update?

> > +                  );
> > +  if (EFI_ERROR (Status)) {
> > +    ASSERT (FALSE);
> > +    gBS->FreePages (*VramBaseAddress, EFI_SIZE_TO_PAGES
> (*VramSize));
> > +  }
> > +#endif
> > +
> > +  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             Frame buffer memory allocation success.
> > +  @retval EFI_UNSUPPORTED         Allocated address wider than 40 bits
> > +  @retval !EFI_SUCCESS            Other errors.
> > +**/
> > +EFI_STATUS
> > +LcdPlatformGetVram (
> > +  OUT EFI_PHYSICAL_ADDRESS * CONST VramBaseAddress,
> > +  OUT UINTN                * CONST 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 CONST 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.
> > +**/
> > +EFI_STATUS
> > +LcdPlatformQueryMode (
> > +  IN  CONST UINT32                                 ModeNumber,
> > +  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION * CONST Info
> > +  )
> > +{
> > +  ASSERT (ModeNumber < mMaxMode);
> > +  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 CONST SCAN_TIMINGS ** Horizontal,
> > +  OUT CONST 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 value Bytes Per Pixel.
> > +
> > +  @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  CONST UINT32    ModeNumber,
> > +  OUT LCD_BPP * CONST Bpp
> > +  )
> > +{
> > +  ASSERT (Bpp != NULL);
> > +  if (ModeNumber >= mMaxMode) {
> > +    // Check valid ModeNumber.
> > +    ASSERT (ModeNumber < mMaxMode);
> > +    return EFI_INVALID_PARAMETER;
> > +  }
> > +
> > +  *Bpp = LCD_BITS_PER_PIXEL_24;
> > +
> > +  return EFI_SUCCESS;
> > +}
> > diff --git
> >
> a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> >
> b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> > index
> >
> 1e8f3205312ebf30fa1666130bc944261384359a..f0b482f91a84d91ac9914
> c18b794
> > 1dd32ab8c8a7 100644
> > ---
> a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> > +++
> b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> > @@ -21,9 +21,10 @@
> >  #include <ArmPlatform.h>
> >
> >  #define FRAME_BUFFER_DESCRIPTOR ((FixedPcdGet64
> > (PcdArmLcdDdrFrameBufferBase) != 0) ? 1 : 0)
> > +#define DP_BASE_DESCRIPTOR      ((FixedPcdGet64
> (PcdArmMaliDpBase) != 0) ? 1 : 0)
> >
> >  // Number of Virtual Memory Map Descriptors -#define
> > MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (9 +
> FRAME_BUFFER_DESCRIPTOR)
> > +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (9 +
> > +FRAME_BUFFER_DESCRIPTOR + DP_BASE_DESCRIPTOR)
> >
> >  // DDR attributes
> >  #define DDR_ATTRIBUTES_CACHED
> ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> > @@ -158,6 +159,13 @@ ArmPlatformGetVirtualMemoryMap (
> >    VirtualMemoryTable[Index].Attributes =
> > ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED;
> >  #endif
> >
> > +#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;
> > +#endif
> >    // Map sparse memory region if present
> >    if (HasSparseMemory) {
> >      VirtualMemoryTable[++Index].PhysicalBase = SparseMemoryBase;
> > --
> > Guid("CE165669-3EF3-493F-B85D-6190EE5B9759")
> >
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  reply	other threads:[~2018-01-24 11:21 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-22 19:08 [PATCH edk2-platforms v2 00/18] ARM: Update GOP evan.lloyd
2017-12-22 19:08 ` [PATCH edk2-platforms v2 01/18] ARM/VExpressPkg: Fix MODULE_TYPE of HDLCD/PL111 platform libraries evan.lloyd
2017-12-22 19:08 ` [PATCH edk2-platforms v2 02/18] ARM/VExpressPkg: Tidy HDLCD and PL11LCD platform Lib: Coding standard evan.lloyd
2017-12-23 14:07   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 03/18] ARM/VExpressPkg: Tidy HdLcd/PL111Lcd code: Updated comments evan.lloyd
2017-12-23 14:08   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 04/18] ARM/VExpressPkg: Remove unused PcdPL111LcdMaxMode from HDLCD inf evan.lloyd
2017-12-23 14:08   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 05/18] ARM/VExpressPkg: PL111 and HDLCD: add const qualifier evan.lloyd
2017-12-23 14:09   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 06/18] ARM/VExpressPkg: Add and update debug ASSERTS evan.lloyd
2017-12-23 14:12   ` Ard Biesheuvel
2018-01-04 18:55     ` Girish Pathak
2018-01-04 19:24       ` Ard Biesheuvel
2018-01-04 19:51         ` Evan Lloyd
2018-01-04 19:54           ` Ard Biesheuvel
2018-02-28 20:27             ` Evan Lloyd
2018-03-02 19:07               ` Ard Biesheuvel
2018-03-05 15:08                 ` Evan Lloyd
2018-03-06 11:16                   ` Ard Biesheuvel
2018-03-14 12:24         ` Leif Lindholm
2018-03-14 12:35           ` Ard Biesheuvel
2018-03-14 12:39             ` Leif Lindholm
2017-12-22 19:08 ` [PATCH edk2-platforms v2 07/18] ARM/VExpressPkg: PL111LcdArmVExpressLib: Minor code cleanup evan.lloyd
2017-12-23 14:13   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 08/18] ARM/VExpressPkg: PL111 and HDLCD: Use FixedPcdGet32 evan.lloyd
2017-12-23 14:14   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 09/18] ARM/VExpressPkg: PL11LcdArmVExpressLib: Improvement conditional evan.lloyd
2017-12-23 14:16   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 10/18] ARM/VExpressPkg: HdLcdArmVExpressLib: Remove status check EFI_TIMEOUT evan.lloyd
2017-12-23 14:16   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 11/18] ARM/VExpressPkg: HdLcdArmVExpressLib: Remove redundant Bpp evan.lloyd
2017-12-23 14:17   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 12/18] ARM/VExpressPkg: Redefine LcdPlatformGetTimings function evan.lloyd
2017-12-23 14:18   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 13/18] ARM/VExpressPkg: PL111 and HDLCD: Add PCD to select pixel format evan.lloyd
2017-12-23 16:00   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 14/18] ARM/VExpressPkg: Reserving framebuffer at build evan.lloyd
2017-12-23 16:02   ` Ard Biesheuvel
2018-01-03 11:04     ` Evan Lloyd
2017-12-22 19:08 ` [PATCH edk2-platforms v2 15/18] ARM/VExpressPkg: New DP500/DP550/DP650 platform library evan.lloyd
2017-12-23 16:07   ` Ard Biesheuvel
2018-01-08 18:51     ` Evan Lloyd
2018-01-24 11:27       ` Alexei Fedorov [this message]
2018-01-24 11:34         ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 16/18] ARM/JunoPkg: Mapping Non-Trused SRAM as device memory evan.lloyd
2017-12-23 16:08   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 17/18] ARM/JunoPkg: Adding SCMI MTL library evan.lloyd
2017-12-23 16:12   ` Ard Biesheuvel
2017-12-22 19:08 ` [PATCH edk2-platforms v2 18/18] ARM/JunoPkg: Add HDLCD platform library evan.lloyd
2017-12-23 16:22   ` Ard Biesheuvel
2018-01-09 18:21     ` Evan Lloyd
2018-01-09 18:26       ` Ard Biesheuvel
2018-01-10 11:45         ` Alexei Fedorov
2018-01-10 12:02           ` Ard Biesheuvel
2017-12-22 19:29 ` [PATCH edk2-platforms v2 00/18] ARM: Update GOP Ard Biesheuvel
2018-01-02 10:28   ` Evan Lloyd

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