ArmVirtPkg/QemuFwCfgLib: Relocate QemuFwCfgLib to OvmfPkg

Relocate QemuFwCfgLib to OvmfPkg/Library/QemuFwCfgLib and rename
it to QemuFwCfgLibMmio, this library is leverage by both ARM and
RISC-V archs.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>

4 files changed, 2 insertions, 684 deletions

diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc
index 86417f8797..3cca073009 100644
--- a/ArmVirtPkg/ArmVirtQemu.dsc
+++ b/ArmVirtPkg/ArmVirtQemu.dsc
@@ -59,7 +59,7 @@
   # Virtio Support

   VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf

   VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf

-  QemuFwCfgLib|ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.inf

+  QemuFwCfgLib|OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmio.inf

   QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/BaseQemuFwCfgS3LibNull.inf

   QemuFwCfgSimpleParserLib|OvmfPkg/Library/QemuFwCfgSimpleParserLib/QemuFwCfgSimpleParserLib.inf

   QemuLoadImageLib|OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.inf

diff --git a/ArmVirtPkg/ArmVirtQemuKernel.dsc b/ArmVirtPkg/ArmVirtQemuKernel.dsc
index 3fad481e29..a42e53b0b1 100644
--- a/ArmVirtPkg/ArmVirtQemuKernel.dsc
+++ b/ArmVirtPkg/ArmVirtQemuKernel.dsc
@@ -57,7 +57,7 @@
   # Virtio Support

   VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf

   VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf

-  QemuFwCfgLib|ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.inf

+  QemuFwCfgLib|OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmio.inf

   QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/BaseQemuFwCfgS3LibNull.inf

   QemuFwCfgSimpleParserLib|OvmfPkg/Library/QemuFwCfgSimpleParserLib/QemuFwCfgSimpleParserLib.inf

   QemuLoadImageLib|OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.inf

diff --git a/ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c b/ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
deleted file mode 100644
index e2ac4108d1..0000000000
--- a/ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
+++ /dev/null
@@ -1,633 +0,0 @@
-/** @file

-

-  Stateful and implicitly initialized fw_cfg library implementation.

-

-  Copyright (C) 2013 - 2014, Red Hat, Inc.

-  Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>

-

-  SPDX-License-Identifier: BSD-2-Clause-Patent

-**/

-

-#include <Uefi.h>

-

-#include <Library/BaseLib.h>

-#include <Library/BaseMemoryLib.h>

-#include <Library/DebugLib.h>

-#include <Library/IoLib.h>

-#include <Library/QemuFwCfgLib.h>

-#include <Library/UefiBootServicesTableLib.h>

-

-#include <Protocol/FdtClient.h>

-

-STATIC UINTN mFwCfgSelectorAddress;

-STATIC UINTN mFwCfgDataAddress;

-STATIC UINTN mFwCfgDmaAddress;

-

-/**

-  Reads firmware configuration bytes into a buffer

-

-  @param[in] Size    Size in bytes to read

-  @param[in] Buffer  Buffer to store data into  (OPTIONAL if Size is 0)

-

-**/

-typedef

-VOID (EFIAPI READ_BYTES_FUNCTION) (

-  IN UINTN Size,

-  IN VOID  *Buffer OPTIONAL

-  );

-

-/**

-  Writes bytes from a buffer to firmware configuration

-

-  @param[in] Size    Size in bytes to write

-  @param[in] Buffer  Buffer to transfer data from (OPTIONAL if Size is 0)

-

-**/

-typedef

-VOID (EFIAPI WRITE_BYTES_FUNCTION) (

-  IN UINTN Size,

-  IN VOID  *Buffer OPTIONAL

-  );

-

-/**

-  Skips bytes in firmware configuration

-

-  @param[in] Size  Size in bytes to skip

-

-**/

-typedef

-VOID (EFIAPI SKIP_BYTES_FUNCTION) (

-  IN UINTN Size

-  );

-

-//

-// Forward declaration of the two implementations we have.

-//

-STATIC READ_BYTES_FUNCTION MmioReadBytes;

-STATIC WRITE_BYTES_FUNCTION MmioWriteBytes;

-STATIC SKIP_BYTES_FUNCTION MmioSkipBytes;

-STATIC READ_BYTES_FUNCTION DmaReadBytes;

-STATIC WRITE_BYTES_FUNCTION DmaWriteBytes;

-STATIC SKIP_BYTES_FUNCTION DmaSkipBytes;

-

-//

-// These correspond to the implementation we detect at runtime.

-//

-STATIC READ_BYTES_FUNCTION *InternalQemuFwCfgReadBytes = MmioReadBytes;

-STATIC WRITE_BYTES_FUNCTION *InternalQemuFwCfgWriteBytes = MmioWriteBytes;

-STATIC SKIP_BYTES_FUNCTION *InternalQemuFwCfgSkipBytes = MmioSkipBytes;

-

-

-/**

-  Returns a boolean indicating if the firmware configuration interface

-  is available or not.

-

-  This function may change fw_cfg state.

-

-  @retval TRUE   The interface is available

-  @retval FALSE  The interface is not available

-

-**/

-BOOLEAN

-EFIAPI

-QemuFwCfgIsAvailable (

-  VOID

-  )

-{

-  return (BOOLEAN)(mFwCfgSelectorAddress != 0 && mFwCfgDataAddress != 0);

-}

-

-

-RETURN_STATUS

-EFIAPI

-QemuFwCfgInitialize (

-  VOID

-  )

-{

-  EFI_STATUS                    Status;

-  FDT_CLIENT_PROTOCOL           *FdtClient;

-  CONST UINT64                  *Reg;

-  UINT32                        RegSize;

-  UINTN                         AddressCells, SizeCells;

-  UINT64                        FwCfgSelectorAddress;

-  UINT64                        FwCfgSelectorSize;

-  UINT64                        FwCfgDataAddress;

-  UINT64                        FwCfgDataSize;

-  UINT64                        FwCfgDmaAddress;

-  UINT64                        FwCfgDmaSize;

-

-  Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,

-                  (VOID **)&FdtClient);

-  ASSERT_EFI_ERROR (Status);

-

-  Status = FdtClient->FindCompatibleNodeReg (FdtClient, "qemu,fw-cfg-mmio",

-                         (CONST VOID **)&Reg, &AddressCells, &SizeCells,

-                         &RegSize);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_WARN,

-      "%a: No 'qemu,fw-cfg-mmio' compatible DT node found (Status == %r)\n",

-      __FUNCTION__, Status));

-    return EFI_SUCCESS;

-  }

-

-  ASSERT (AddressCells == 2);

-  ASSERT (SizeCells == 2);

-  ASSERT (RegSize == 2 * sizeof (UINT64));

-

-  FwCfgDataAddress     = SwapBytes64 (Reg[0]);

-  FwCfgDataSize        = 8;

-  FwCfgSelectorAddress = FwCfgDataAddress + FwCfgDataSize;

-  FwCfgSelectorSize    = 2;

-

-  //

-  // The following ASSERT()s express

-  //

-  //   Address + Size - 1 <= MAX_UINTN

-  //

-  // for both registers, that is, that the last byte in each MMIO range is

-  // expressible as a MAX_UINTN. The form below is mathematically

-  // equivalent, and it also prevents any unsigned overflow before the

-  // comparison.

-  //

-  ASSERT (FwCfgSelectorAddress <= MAX_UINTN - FwCfgSelectorSize + 1);

-  ASSERT (FwCfgDataAddress     <= MAX_UINTN - FwCfgDataSize     + 1);

-

-  mFwCfgSelectorAddress = FwCfgSelectorAddress;

-  mFwCfgDataAddress     = FwCfgDataAddress;

-

-  DEBUG ((EFI_D_INFO, "Found FwCfg @ 0x%Lx/0x%Lx\n", FwCfgSelectorAddress,

-    FwCfgDataAddress));

-

-  if (SwapBytes64 (Reg[1]) >= 0x18) {

-    FwCfgDmaAddress = FwCfgDataAddress + 0x10;

-    FwCfgDmaSize    = 0x08;

-

-    //

-    // See explanation above.

-    //

-    ASSERT (FwCfgDmaAddress <= MAX_UINTN - FwCfgDmaSize + 1);

-

-    DEBUG ((EFI_D_INFO, "Found FwCfg DMA @ 0x%Lx\n", FwCfgDmaAddress));

-  } else {

-    FwCfgDmaAddress = 0;

-  }

-

-  if (QemuFwCfgIsAvailable ()) {

-    UINT32 Signature;

-

-    QemuFwCfgSelectItem (QemuFwCfgItemSignature);

-    Signature = QemuFwCfgRead32 ();

-    if (Signature == SIGNATURE_32 ('Q', 'E', 'M', 'U')) {

-      //

-      // For DMA support, we require the DTB to advertise the register, and the

-      // feature bitmap (which we read without DMA) to confirm the feature.

-      //

-      if (FwCfgDmaAddress != 0) {

-        UINT32 Features;

-

-        QemuFwCfgSelectItem (QemuFwCfgItemInterfaceVersion);

-        Features = QemuFwCfgRead32 ();

-        if ((Features & FW_CFG_F_DMA) != 0) {

-          mFwCfgDmaAddress = FwCfgDmaAddress;

-          InternalQemuFwCfgReadBytes = DmaReadBytes;

-          InternalQemuFwCfgWriteBytes = DmaWriteBytes;

-          InternalQemuFwCfgSkipBytes = DmaSkipBytes;

-        }

-      }

-    } else {

-      mFwCfgSelectorAddress = 0;

-      mFwCfgDataAddress     = 0;

-    }

-  }

-  return RETURN_SUCCESS;

-}

-

-

-/**

-  Selects a firmware configuration item for reading.

-

-  Following this call, any data read from this item will start from the

-  beginning of the configuration item's data.

-

-  @param[in] QemuFwCfgItem  Firmware Configuration item to read

-

-**/

-VOID

-EFIAPI

-QemuFwCfgSelectItem (

-  IN FIRMWARE_CONFIG_ITEM QemuFwCfgItem

-  )

-{

-  if (QemuFwCfgIsAvailable ()) {

-    MmioWrite16 (mFwCfgSelectorAddress, SwapBytes16 ((UINT16)QemuFwCfgItem));

-  }

-}

-

-

-/**

-  Slow READ_BYTES_FUNCTION.

-**/

-STATIC

-VOID

-EFIAPI

-MmioReadBytes (

-  IN UINTN Size,

-  IN VOID  *Buffer OPTIONAL

-  )

-{

-  UINTN Left;

-  UINT8 *Ptr;

-  UINT8 *End;

-

-#ifdef MDE_CPU_AARCH64

-  Left = Size & 7;

-#else

-  Left = Size & 3;

-#endif

-

-  Size -= Left;

-  Ptr = Buffer;

-  End = Ptr + Size;

-

-#ifdef MDE_CPU_AARCH64

-  while (Ptr < End) {

-    *(UINT64 *)Ptr = MmioRead64 (mFwCfgDataAddress);

-    Ptr += 8;

-  }

-  if (Left & 4) {

-    *(UINT32 *)Ptr = MmioRead32 (mFwCfgDataAddress);

-    Ptr += 4;

-  }

-#else

-  while (Ptr < End) {

-    *(UINT32 *)Ptr = MmioRead32 (mFwCfgDataAddress);

-    Ptr += 4;

-  }

-#endif

-

-  if (Left & 2) {

-    *(UINT16 *)Ptr = MmioRead16 (mFwCfgDataAddress);

-    Ptr += 2;

-  }

-  if (Left & 1) {

-    *Ptr = MmioRead8 (mFwCfgDataAddress);

-  }

-}

-

-

-/**

-  Transfer an array of bytes, or skip a number of bytes, using the DMA

-  interface.

-

-  @param[in]     Size     Size in bytes to transfer or skip.

-

-  @param[in,out] Buffer   Buffer to read data into or write data from. Ignored,

-                          and may be NULL, if Size is zero, or Control is

-                          FW_CFG_DMA_CTL_SKIP.

-

-  @param[in]     Control  One of the following:

-                          FW_CFG_DMA_CTL_WRITE - write to fw_cfg from Buffer.

-                          FW_CFG_DMA_CTL_READ  - read from fw_cfg into Buffer.

-                          FW_CFG_DMA_CTL_SKIP  - skip bytes in fw_cfg.

-**/

-STATIC

-VOID

-DmaTransferBytes (

-  IN     UINTN  Size,

-  IN OUT VOID   *Buffer OPTIONAL,

-  IN     UINT32 Control

-  )

-{

-  volatile FW_CFG_DMA_ACCESS Access;

-  UINT32                     Status;

-

-  ASSERT (Control == FW_CFG_DMA_CTL_WRITE || Control == FW_CFG_DMA_CTL_READ ||

-    Control == FW_CFG_DMA_CTL_SKIP);

-

-  if (Size == 0) {

-    return;

-  }

-

-  ASSERT (Size <= MAX_UINT32);

-

-  Access.Control = SwapBytes32 (Control);

-  Access.Length  = SwapBytes32 ((UINT32)Size);

-  Access.Address = SwapBytes64 ((UINT64)(UINTN)Buffer);

-

-  //

-  // We shouldn't start the transfer before setting up Access.

-  //

-  MemoryFence ();

-

-  //

-  // This will fire off the transfer.

-  //

-#ifdef MDE_CPU_AARCH64

-  MmioWrite64 (mFwCfgDmaAddress, SwapBytes64 ((UINT64)&Access));

-#else

-  MmioWrite32 ((UINT32)(mFwCfgDmaAddress + 4), SwapBytes32 ((UINT32)&Access));

-#endif

-

-  //

-  // We shouldn't look at Access.Control before starting the transfer.

-  //

-  MemoryFence ();

-

-  do {

-    Status = SwapBytes32 (Access.Control);

-    ASSERT ((Status & FW_CFG_DMA_CTL_ERROR) == 0);

-  } while (Status != 0);

-

-  //

-  // The caller will want to access the transferred data.

-  //

-  MemoryFence ();

-}

-

-

-/**

-  Fast READ_BYTES_FUNCTION.

-**/

-STATIC

-VOID

-EFIAPI

-DmaReadBytes (

-  IN UINTN Size,

-  IN VOID  *Buffer OPTIONAL

-  )

-{

-  DmaTransferBytes (Size, Buffer, FW_CFG_DMA_CTL_READ);

-}

-

-

-/**

-  Reads firmware configuration bytes into a buffer

-

-  If called multiple times, then the data read will continue at the offset of

-  the firmware configuration item where the previous read ended.

-

-  @param[in] Size    Size in bytes to read

-  @param[in] Buffer  Buffer to store data into

-

-**/

-VOID

-EFIAPI

-QemuFwCfgReadBytes (

-  IN UINTN Size,

-  IN VOID  *Buffer

-  )

-{

-  if (QemuFwCfgIsAvailable ()) {

-    InternalQemuFwCfgReadBytes (Size, Buffer);

-  } else {

-    ZeroMem (Buffer, Size);

-  }

-}

-

-

-/**

-  Slow WRITE_BYTES_FUNCTION.

-**/

-STATIC

-VOID

-EFIAPI

-MmioWriteBytes (

-  IN UINTN Size,

-  IN VOID  *Buffer OPTIONAL

-  )

-{

-  UINTN Idx;

-

-  for (Idx = 0; Idx < Size; ++Idx) {

-    MmioWrite8 (mFwCfgDataAddress, ((UINT8 *)Buffer)[Idx]);

-  }

-}

-

-

-/**

-  Fast WRITE_BYTES_FUNCTION.

-**/

-STATIC

-VOID

-EFIAPI

-DmaWriteBytes (

-  IN UINTN Size,

-  IN VOID  *Buffer OPTIONAL

-  )

-{

-  DmaTransferBytes (Size, Buffer, FW_CFG_DMA_CTL_WRITE);

-}

-

-

-/**

-  Write firmware configuration bytes from a buffer

-

-  If called multiple times, then the data written will continue at the offset

-  of the firmware configuration item where the previous write ended.

-

-  @param[in] Size    Size in bytes to write

-  @param[in] Buffer  Buffer to read data from

-

-**/

-VOID

-EFIAPI

-QemuFwCfgWriteBytes (

-  IN UINTN                  Size,

-  IN VOID                   *Buffer

-  )

-{

-  if (QemuFwCfgIsAvailable ()) {

-    InternalQemuFwCfgWriteBytes (Size, Buffer);

-  }

-}

-

-

-/**

-  Slow SKIP_BYTES_FUNCTION.

-**/

-STATIC

-VOID

-EFIAPI

-MmioSkipBytes (

-  IN UINTN Size

-  )

-{

-  UINTN ChunkSize;

-  UINT8 SkipBuffer[256];

-

-  //

-  // Emulate the skip by reading data in chunks, and throwing it away. The

-  // implementation below doesn't affect the static data footprint for client

-  // modules. Large skips are not expected, therefore this fallback is not

-  // performance critical. The size of SkipBuffer is thought not to exert a

-  // large pressure on the stack.

-  //

-  while (Size > 0) {

-    ChunkSize = MIN (Size, sizeof SkipBuffer);

-    MmioReadBytes (ChunkSize, SkipBuffer);

-    Size -= ChunkSize;

-  }

-}

-

-

-/**

-  Fast SKIP_BYTES_FUNCTION.

-**/

-STATIC

-VOID

-EFIAPI

-DmaSkipBytes (

-  IN UINTN Size

-  )

-{

-  DmaTransferBytes (Size, NULL, FW_CFG_DMA_CTL_SKIP);

-}

-

-

-/**

-  Skip bytes in the firmware configuration item.

-

-  Increase the offset of the firmware configuration item without transferring

-  bytes between the item and a caller-provided buffer. Subsequent read, write

-  or skip operations will commence at the increased offset.

-

-  @param[in] Size  Number of bytes to skip.

-**/

-VOID

-EFIAPI

-QemuFwCfgSkipBytes (

-  IN UINTN Size

-  )

-{

-  if (QemuFwCfgIsAvailable ()) {

-    InternalQemuFwCfgSkipBytes (Size);

-  }

-}

-

-

-/**

-  Reads a UINT8 firmware configuration value

-

-  @return  Value of Firmware Configuration item read

-

-**/

-UINT8

-EFIAPI

-QemuFwCfgRead8 (

-  VOID

-  )

-{

-  UINT8 Result;

-

-  QemuFwCfgReadBytes (sizeof Result, &Result);

-  return Result;

-}

-

-

-/**

-  Reads a UINT16 firmware configuration value

-

-  @return  Value of Firmware Configuration item read

-

-**/

-UINT16

-EFIAPI

-QemuFwCfgRead16 (

-  VOID

-  )

-{

-  UINT16 Result;

-

-  QemuFwCfgReadBytes (sizeof Result, &Result);

-  return Result;

-}

-

-

-/**

-  Reads a UINT32 firmware configuration value

-

-  @return  Value of Firmware Configuration item read

-

-**/

-UINT32

-EFIAPI

-QemuFwCfgRead32 (

-  VOID

-  )

-{

-  UINT32 Result;

-

-  QemuFwCfgReadBytes (sizeof Result, &Result);

-  return Result;

-}

-

-

-/**

-  Reads a UINT64 firmware configuration value

-

-  @return  Value of Firmware Configuration item read

-

-**/

-UINT64

-EFIAPI

-QemuFwCfgRead64 (

-  VOID

-  )

-{

-  UINT64 Result;

-

-  QemuFwCfgReadBytes (sizeof Result, &Result);

-  return Result;

-}

-

-

-/**

-  Find the configuration item corresponding to the firmware configuration file.

-

-  @param[in]  Name  Name of file to look up.

-  @param[out] Item  Configuration item corresponding to the file, to be passed

-                    to QemuFwCfgSelectItem ().

-  @param[out] Size  Number of bytes in the file.

-

-  @retval RETURN_SUCCESS      If file is found.

-  @retval RETURN_NOT_FOUND    If file is not found.

-  @retval RETURN_UNSUPPORTED  If firmware configuration is unavailable.

-

-**/

-RETURN_STATUS

-EFIAPI

-QemuFwCfgFindFile (

-  IN   CONST CHAR8           *Name,

-  OUT  FIRMWARE_CONFIG_ITEM  *Item,

-  OUT  UINTN                 *Size

-  )

-{

-  UINT32 Count;

-  UINT32 Idx;

-

-  if (!QemuFwCfgIsAvailable ()) {

-    return RETURN_UNSUPPORTED;

-  }

-

-  QemuFwCfgSelectItem (QemuFwCfgItemFileDir);

-  Count = SwapBytes32 (QemuFwCfgRead32 ());

-

-  for (Idx = 0; Idx < Count; ++Idx) {

-    UINT32 FileSize;

-    UINT16 FileSelect;

-    CHAR8  FName[QEMU_FW_CFG_FNAME_SIZE];

-

-    FileSize   = QemuFwCfgRead32 ();

-    FileSelect = QemuFwCfgRead16 ();

-    QemuFwCfgRead16 (); // skip the field called "reserved"

-    InternalQemuFwCfgReadBytes (sizeof (FName), FName);

-

-    if (AsciiStrCmp (Name, FName) == 0) {

-      *Item = (FIRMWARE_CONFIG_ITEM) SwapBytes16 (FileSelect);

-      *Size = SwapBytes32 (FileSize);

-      return RETURN_SUCCESS;

-    }

-  }

-

-  return RETURN_NOT_FOUND;

-}

diff --git a/ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.inf b/ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.inf
deleted file mode 100644
index f3cc827907..0000000000
--- a/ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.inf
+++ /dev/null
@@ -1,49 +0,0 @@
-## @file

-#

-#  Stateful, implicitly initialized fw_cfg library.

-#

-#  Copyright (C) 2013 - 2014, Red Hat, Inc.

-#  Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>

-#

-#  SPDX-License-Identifier: BSD-2-Clause-Patent

-#

-##

-

-[Defines]

-  INF_VERSION                    = 0x00010005

-  BASE_NAME                      = QemuFwCfgLib

-  FILE_GUID                      = B271F41F-B841-48A9-BA8D-545B4BC2E2BF

-  MODULE_TYPE                    = BASE

-  VERSION_STRING                 = 1.0

-  LIBRARY_CLASS                  = QemuFwCfgLib|DXE_DRIVER UEFI_DRIVER

-

-  CONSTRUCTOR                    = QemuFwCfgInitialize

-

-#

-# The following information is for reference only and not required by the build

-# tools.

-#

-#  VALID_ARCHITECTURES           = ARM AARCH64

-#

-

-[Sources]

-  QemuFwCfgLib.c

-

-[Packages]

-  MdePkg/MdePkg.dec

-  OvmfPkg/OvmfPkg.dec

-  EmbeddedPkg/EmbeddedPkg.dec

-  ArmVirtPkg/ArmVirtPkg.dec

-

-[LibraryClasses]

-  BaseLib

-  BaseMemoryLib

-  DebugLib

-  IoLib

-  UefiBootServicesTableLib

-

-[Protocols]

-  gFdtClientProtocolGuid                                ## CONSUMES

-

-[Depex]

-  gFdtClientProtocolGuid