b8b890ca0a
Add a minimal, NULL class library called "PxeBcPcdProducerLib" for setting the "PcdIPv4PXESupport" and "PcdIPv6PXESupport" PCDs of NetworkPkg, from fw_cfg. These PCDs control whether the UefiPxeBcDxe driver supports PXEv4 / PXEv6 boot. If a PXE version is disabled, the corresponding LoadFile protocol instance is not produced by UefiPxeBcDxe, and so EfiBootManagerRefreshAllBootOption() in UefiBootManagerLib does not generate corresponding *new* boot options either. (Existent boot options are not deleted.) Hook the library into the UefiPxeBcDxe driver. (The driver is already included from "NetworkComponents.dsc.inc", but we can list it again in the DSC file, for providing <LibraryClasses> overrides.) In OVMF, the PCDs could be set in PlatformPei too, but ArmVirtQemu does not have fw_cfg access in the PEI phase. Hence a NULL class library that can be linked into UefiPxeBcDxe. When listing the PCDs under [PcdsDynamicDefault], stick with the DEC default values. QEMU switches: -fw_cfg name=opt/org.tianocore/IPv4PXESupport,string=[yn] -fw_cfg name=opt/org.tianocore/IPv6PXESupport,string=[yn] The "opt/org.tianocore" prefix follows the "opt/RFQDN/" recommendation from QEMU's "docs/specs/fw_cfg.txt". Cc: Ard Biesheuvel <ard.biesheuvel@arm.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Per Sundstrom <per_sundstrom@yahoo.com> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2681 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Message-Id: <20200424075353.8489-6-lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
34 lines
902 B
INI
34 lines
902 B
INI
## @file
|
|
# Configure some PCDs dynamically for
|
|
# "NetworkPkg/UefiPxeBcDxe/UefiPxeBcDxe.inf", from QEMU's fw_cfg.
|
|
#
|
|
# Copyright (C) 2020, Red Hat, Inc.
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
##
|
|
|
|
[Defines]
|
|
INF_VERSION = 1.29
|
|
BASE_NAME = PxeBcPcdProducerLib
|
|
FILE_GUID = 1da2723f-52df-432a-8d03-6e8fa8acc107
|
|
MODULE_TYPE = BASE
|
|
VERSION_STRING = 1.0
|
|
LIBRARY_CLASS = NULL
|
|
CONSTRUCTOR = SetPxeBcPcds
|
|
|
|
[Sources]
|
|
PxeBcPcd.c
|
|
|
|
[Packages]
|
|
MdePkg/MdePkg.dec
|
|
NetworkPkg/NetworkPkg.dec
|
|
OvmfPkg/OvmfPkg.dec
|
|
|
|
[LibraryClasses]
|
|
PcdLib
|
|
QemuFwCfgSimpleParserLib
|
|
|
|
[Pcd]
|
|
gEfiNetworkPkgTokenSpaceGuid.PcdIPv4PXESupport ## SOMETIMES_PRODUCES
|
|
gEfiNetworkPkgTokenSpaceGuid.PcdIPv6PXESupport ## SOMETIMES_PRODUCES
|