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| author | Brijesh Singh <brijesh.singh@amd.com> | 2017-07-06 09:27:58 -0400 |
|---|---|---|
| committer | Jordan Justen <jordan.l.justen@intel.com> | 2017-07-10 21:17:28 -0700 |
| commit | 6c22e534beaabad5856609a86d009f3818989a4b (patch) | |
| tree | 4b72d86ef39ad316c330003f0016260eea988780 /OvmfPkg/Library/PlatformHasIoMmuLib | |
| parent | c5d736eb6770ef80ab585aaf81fdf36ba5fd7607 (diff) | |
| download | edk2-6c22e534beaabad5856609a86d009f3818989a4b.tar.gz edk2-6c22e534beaabad5856609a86d009f3818989a4b.tar.bz2 edk2-6c22e534beaabad5856609a86d009f3818989a4b.zip | |
OvmfPkg: Add PlatformHasIoMmuLib
Add the shorter-term library instance outlined in the previous patch to
OvmfPkg, so that we can imbue PciHostBridgeDxe with a protocol dependency
on gEdkiiIoMmuProtocolGuid OR gIoMmuAbsentProtocolGuid.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Suggested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'OvmfPkg/Library/PlatformHasIoMmuLib')
| -rw-r--r-- | OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.c | 33 | ||||
| -rw-r--r-- | OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.inf | 38 |
2 files changed, 71 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.c b/OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.c new file mode 100644 index 0000000000..a271be3e8a --- /dev/null +++ b/OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.c @@ -0,0 +1,33 @@ +/** @file
+ A hook-in library for MdeModulePkg/Bus/Pci/PciHostBridgeDxe.
+
+ Plugging this library instance into PciHostBridgeDxe makes
+ PciHostBridgeDxe depend on the platform's dynamic decision whether
+ to provide IOMMU implementation (usually through IoMmuDxe driver).
+
+ Copyright (C) 2017, Red Hat, Inc.
+ Copyright (C) 2017, AMD, Inc.
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+ WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#include <Base.h>
+
+RETURN_STATUS
+EFIAPI
+PlatformHasIoMmuInitialize (
+ VOID
+ )
+{
+ //
+ // Do nothing, just imbue PciHostBridgeDxe with a protocol dependency on
+ // gIoMmuAbsentProtocolGuid OR gEdkiiIoMmuProtocolGuid.
+ //
+ return RETURN_SUCCESS;
+}
diff --git a/OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.inf b/OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.inf new file mode 100644 index 0000000000..f8151cfe25 --- /dev/null +++ b/OvmfPkg/Library/PlatformHasIoMmuLib/PlatformHasIoMmuLib.inf @@ -0,0 +1,38 @@ +## @file
+# A hook-in library for MdeModulePkg/Bus/Pci/PciHostBridgeDxe.
+#
+# Plugging this library instance into PciHostBridgeDxe makes
+# PciHostBridgeDxe depend on the platform's dynamic decision whether
+# to provide IOMMU implementation (usually through IoMmuDxe driver).
+#
+# Copyright (C) 2017, Red Hat, Inc.
+# Copyright (C) 2017, AMD, Inc.
+#
+# This program and the accompanying materials are licensed and made available
+# under the terms and conditions of the BSD License which accompanies this
+# distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+##
+
+[Defines]
+ INF_VERSION = 1.25
+ BASE_NAME = PlatformHasIoMmuLib
+ FILE_GUID = 49b4b018-0558-448b-1e1a-12226342877d
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = PlatformHasIoMmuLib|DXE_DRIVER
+ CONSTRUCTOR = PlatformHasIoMmuInitialize
+
+[Sources]
+ PlatformHasIoMmuLib.c
+
+[Packages]
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+ OvmfPkg/OvmfPkg.dec
+
+[Depex]
+ gEdkiiIoMmuProtocolGuid OR gIoMmuAbsentProtocolGuid
|