Hi Rebecca,
On 4/24/20 8:29 PM, Rebecca Cran wrote:
Add a null implementation library for QemuFwCfgLib, in order to
support building PciHostBridgeLib for bhyve.
Signed-off-by: Rebecca Cran <rebe...@bsdio.com>
---
.../Library/QemuFwCfgLib/QemuFwCfgLibNull.inf | 37 ++++
OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgNull.c | 209 ++++++++++++++++++
2 files changed, 246 insertions(+)
create mode 100644 OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibNull.inf
create mode 100644 OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgNull.c
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibNull.inf
b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibNull.inf
new file mode 100644
index 0000000000..09f86c2b02
--- /dev/null
+++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibNull.inf
@@ -0,0 +1,37 @@
+## @file
+#
+# Stateful, implicitly initialized fw_cfg library.
+#
+# Copyright (C) 2013, Red Hat, Inc.
+# Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = QemuFwCfgLibNull
+ FILE_GUID = B9D1A1F2-01E2-4732-982D-C7F9ED51AC6B
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = QemuFwCfgLib
+
+#
+# The following information is for reference only and not required by the
build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64
+#
+
+[Sources]
+ QemuFwCfgLibInternal.h
+ QemuFwCfgNull.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+ DebugLib
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgNull.c
b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgNull.c
new file mode 100644
index 0000000000..e2cc5f3406
--- /dev/null
+++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgNull.c
@@ -0,0 +1,209 @@
+/** @file
+
+ Stateful and implicitly initialized fw_cfg library implementation.
+
+ Copyright (C) 2013, Red Hat, Inc.
+ Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2017, Advanced Micro Devices. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Uefi.h>
+#include <Library/DebugLib.h>
+#include <IndustryStandard/QemuFwCfg.h>
Don't you need <Library/QemuFwCfgLib.h>?
+
+/**
+ 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 FALSE;
+}
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