mirror of
https://github.com/acidanthera/audk.git
synced 2025-08-17 23:58:12 +02:00
b26f0cf9ee
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/** @file
|
|
Shared code for the PEI fw_cfg and DXE fw_cfg instances of the QemuFwCfgS3Lib
|
|
class.
|
|
|
|
Copyright (C) 2017, Red Hat, Inc.
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
**/
|
|
|
|
#include <Library/QemuFwCfgLib.h>
|
|
#include <Library/QemuFwCfgS3Lib.h>
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
RETURN_STATUS Status;
|
|
FIRMWARE_CONFIG_ITEM FwCfgItem;
|
|
UINTN FwCfgSize;
|
|
UINT8 SystemStates[6];
|
|
|
|
Status = QemuFwCfgFindFile ("etc/system-states", &FwCfgItem, &FwCfgSize);
|
|
if (Status != RETURN_SUCCESS || FwCfgSize != sizeof SystemStates) {
|
|
return FALSE;
|
|
}
|
|
QemuFwCfgSelectItem (FwCfgItem);
|
|
QemuFwCfgReadBytes (sizeof SystemStates, SystemStates);
|
|
return (BOOLEAN) (SystemStates[3] & BIT7);
|
|
}
|