ArmVirtPkg/PlatformBootManagerLib: register boot options and hot keys

[mirror_edk2.git] / ArmVirtPkg / Library / FdtPciPcdProducerLib / FdtPciPcdProducerLib.c

/** @file\r
  FDT client library for consumers of PCI related dynamic PCDs\r
\r
  Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>\r
\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <Uefi.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
#include <Protocol/FdtClient.h>\r
\r
RETURN_STATUS\r
EFIAPI\r
FdtPciPcdProducerLibConstructor (\r
  VOID\r
  )\r
{\r
  UINT64              PciExpressBaseAddress;\r
  FDT_CLIENT_PROTOCOL *FdtClient;\r
  CONST UINT64        *Reg;\r
  UINT32              RegElemSize, RegSize;\r
  EFI_STATUS          Status;\r
\r
  PciExpressBaseAddress = PcdGet64 (PcdPciExpressBaseAddress);\r
  if (PciExpressBaseAddress != MAX_UINT64) {\r
    return EFI_SUCCESS;\r
  }\r
\r
  Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,\r
                  (VOID **)&FdtClient);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  Status = FdtClient->FindCompatibleNodeReg (FdtClient,\r
                        "pci-host-ecam-generic", (CONST VOID **)&Reg,\r
                        &RegElemSize, &RegSize);\r
\r
  if (EFI_ERROR (Status)) {\r
    PciExpressBaseAddress = 0;\r
  } else {\r
    ASSERT (RegElemSize == sizeof (UINT64));\r
    PciExpressBaseAddress = SwapBytes64 (*Reg);\r
\r
    PcdSetBool (PcdPciDisableBusEnumeration, FALSE);\r
  }\r
\r
  PcdSet64 (PcdPciExpressBaseAddress, PciExpressBaseAddress);\r
\r
  return RETURN_SUCCESS;\r
}\r