OvmfPkg/Library/PxeBcPcdProducerLib/PxeBcPcd.c

   1 /** @file
   2   Configure some PCDs dynamically for
   3   "NetworkPkg/UefiPxeBcDxe/UefiPxeBcDxe.inf", from QEMU's fw_cfg.
   4
   5   Copyright (C) 2020, Red Hat, Inc.
   6
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8 **/
   9
  10 #include <Library/PcdLib.h>
  11 #include <Library/QemuFwCfgSimpleParserLib.h>
  12
  13 RETURN_STATUS
  14 EFIAPI
  15 SetPxeBcPcds (
  16   VOID
  17   )
  18 {
  19   BOOLEAN        FwCfgBool;
  20   RETURN_STATUS  PcdStatus;
  21
  22   if (!RETURN_ERROR (
  23          QemuFwCfgParseBool (
  24            "opt/org.tianocore/IPv4PXESupport",
  25            &FwCfgBool
  26            )
  27          ))
  28   {
  29     PcdStatus = PcdSet8S (PcdIPv4PXESupport, FwCfgBool);
  30     if (RETURN_ERROR (PcdStatus)) {
  31       return PcdStatus;
  32     }
  33   }
  34
  35   if (!RETURN_ERROR (
  36          QemuFwCfgParseBool (
  37            "opt/org.tianocore/IPv6PXESupport",
  38            &FwCfgBool
  39            )
  40          ))
  41   {
  42     PcdStatus = PcdSet8S (PcdIPv6PXESupport, FwCfgBool);
  43     if (RETURN_ERROR (PcdStatus)) {
  44       return PcdStatus;
  45     }
  46   }
  47
  48   return RETURN_SUCCESS;
  49 }