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| author | Laszlo Ersek <lersek@redhat.com> | 2017-02-22 01:59:41 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2017-03-14 21:49:01 +0100 |
| commit | f70b071e2f14b3b79b328b5afb8345affbe772b1 (patch) | |
| tree | 41f8a434d33f08150f3fc162c8ee1c9ee027b4c8 /OvmfPkg | |
| parent | 6ac97ad31edbd9c8cdea778f452273974c589bf1 (diff) | |
| download | edk2-f70b071e2f14b3b79b328b5afb8345affbe772b1.zip edk2-f70b071e2f14b3b79b328b5afb8345affbe772b1.tar.gz edk2-f70b071e2f14b3b79b328b5afb8345affbe772b1.tar.bz2 | |
OvmfPkg: introduce QemuFwCfgS3Lib class
This library class will enable driver modules (a) to query whether S3
support was enabled on the QEMU command line, (b) to produce fw_cfg DMA
operations that are to be replayed at S3 resume time.
Declare the library class in OvmfPkg/OvmfPkg.dec, and add the library
class header under OvmfPkg/Include/Library/. At the moment, the only API
we expose is QemuFwCfgS3Enabled(), which we'll first migrate from
QemuFwCfgLib. Further interfaces will be added in later patches.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=394
Suggested-by: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Include/Library/QemuFwCfgS3Lib.h | 39 | ||||
| -rw-r--r-- | OvmfPkg/OvmfPkg.dec | 4 |
2 files changed, 43 insertions, 0 deletions
diff --git a/OvmfPkg/Include/Library/QemuFwCfgS3Lib.h b/OvmfPkg/Include/Library/QemuFwCfgS3Lib.h new file mode 100644 index 0000000..1c47361 --- /dev/null +++ b/OvmfPkg/Include/Library/QemuFwCfgS3Lib.h @@ -0,0 +1,39 @@ +/** @file
+ S3 support for QEMU fw_cfg
+
+ This library class enables driver modules (a) to query whether S3 support was
+ enabled on the QEMU command line, (b) to produce fw_cfg DMA operations that
+ are to be replayed at S3 resume time.
+
+ Copyright (C) 2017, Red Hat, 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.
+**/
+
+#ifndef __FW_CFG_S3_LIB__
+#define __FW_CFG_S3_LIB__
+
+/**
+ Determine if S3 support is explicitly enabled.
+
+ @retval TRUE If S3 support is explicitly enabled. Other functions in this
+ library may be called (subject to their individual
+ restrictions).
+
+ FALSE Otherwise. This includes unavailability of the firmware
+ configuration interface. No other function in this library
+ must be called.
+**/
+BOOLEAN
+EFIAPI
+QemuFwCfgS3Enabled (
+ VOID
+ );
+
+#endif
diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec index a0c76a5..3490f7c 100644 --- a/OvmfPkg/OvmfPkg.dec +++ b/OvmfPkg/OvmfPkg.dec @@ -35,6 +35,10 @@ #
QemuFwCfgLib|Include/Library/QemuFwCfgLib.h
+ ## @libraryclass S3 support for QEMU fw_cfg
+ #
+ QemuFwCfgS3Lib|Include/Library/QemuFwCfgS3Lib.h
+
## @libraryclass Rewrite the BootOrder NvVar based on QEMU's "bootorder"
# fw_cfg file.
#
|