mirror_edk2/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.c
Michael D Kinney 4059386c70 ArmPkg: Replace BSD License with BSD+Patent License
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: Leif Lindholm <leif.lindholm@linaro.org>
2019-04-09 09:10:21 -07:00

103 lines
2.5 KiB
C

/** @file
Copyright (c) 2017-2018, Arm Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
System Control and Management Interface V1.0
http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/
DEN0056A_System_Control_and_Management_Interface.pdf
**/
#include <Library/ArmMtlLib.h>
#include <Library/DebugLib.h>
/** Wait until channel is free.
@param[in] Channel Pointer to a channel.
@param[in] TimeOutInMicroSeconds Timeout in micro seconds.
@retval EFI_UNSUPPORTED Interface not implemented.
**/
EFI_STATUS
MtlWaitUntilChannelFree (
IN MTL_CHANNEL *Channel,
IN UINTN TimeOutInMicroSeconds
)
{
return EFI_UNSUPPORTED;
}
/** Return the address of the message payload.
@param[in] Channel Pointer to a channel.
@retval UINT32* Pointer to the payload.
**/
UINT32*
MtlGetChannelPayload (
IN MTL_CHANNEL *Channel
)
{
ASSERT (FALSE);
return NULL;
}
/** Return pointer to a channel for the requested channel type.
@param[in] ChannelType ChannelType, Low or High priority channel.
MTL_CHANNEL_TYPE_LOW or
MTL_CHANNEL_TYPE_HIGH
@param[out] Channel Holds pointer to the channel.
@retval EFI_UNSUPPORTED Requested channel type not supported or
interface not implemented.
**/
EFI_STATUS
MtlGetChannel (
IN MTL_CHANNEL_TYPE ChannelType,
OUT MTL_CHANNEL **Channel
)
{
return EFI_UNSUPPORTED;
}
/** Mark the channel busy and ring the doorbell.
@param[in] Channel Pointer to a channel.
@param[in] MessageHeader Message header.
@param[out] PayloadLength Message length.
@retval EFI_UNSUPPORTED Interface not implemented.
**/
EFI_STATUS
MtlSendMessage (
IN MTL_CHANNEL *Channel,
IN UINT32 MessageHeader,
OUT UINT32 PayloadLength
)
{
return EFI_UNSUPPORTED;
}
/** Wait for a response on a channel.
If channel is free after sending message, it implies SCP responded
with a response on the channel.
@param[in] Channel Pointer to a channel.
@retval EFI_UNSUPPORTED Interface not implemented.
**/
EFI_STATUS
MtlReceiveMessage (
IN MTL_CHANNEL *Channel,
OUT UINT32 *MessageHeader,
OUT UINT32 *PayloadLength
)
{
return EFI_UNSUPPORTED;
}