diff options
| author | Girish Pathak <girish.pathak@arm.com> | 2018-01-15 14:41:51 +0000 |
|---|---|---|
| committer | Leif Lindholm <leif.lindholm@linaro.org> | 2018-04-23 12:12:23 +0100 |
| commit | 38a00bae86e56e402130092200c6743dc74faab3 (patch) | |
| tree | 73826433536cc7589340a2f30a4b38a016c85dbe /ArmPkg | |
| parent | b99f81268a2dd84eb93661a759557765cac0a089 (diff) | |
| download | edk2-38a00bae86e56e402130092200c6743dc74faab3.tar.gz edk2-38a00bae86e56e402130092200c6743dc74faab3.tar.bz2 edk2-38a00bae86e56e402130092200c6743dc74faab3.zip | |
ArmPkg: MTL Library interface and Null library implementation
Upcoming new component ArmPkg/Drivers/ArmScmiDxe is dependent on
platform specific ArmMtlLib library implementation, however in order
to be able to build the ArmScmiDxe component outside of the context of a
particular platform, this change adds Null implementation of the
ArmMtlLib along with ARM MTL library header.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Girish Pathak <girish.pathak@arm.com>
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/ArmPkg.dec | 3 | ||||
| -rw-r--r-- | ArmPkg/Include/Library/ArmMtlLib.h | 137 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.c | 108 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.inf | 26 |
4 files changed, 273 insertions, 1 deletions
diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec index 5dbd019e29..3be5f13f8f 100644 --- a/ArmPkg/ArmPkg.dec +++ b/ArmPkg/ArmPkg.dec @@ -2,7 +2,7 @@ # ARM processor package.
#
# Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
-# Copyright (c) 2011 - 2017, ARM Limited. All rights reserved.
+# Copyright (c) 2011 - 2018, ARM Limited. All rights reserved.
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
@@ -39,6 +39,7 @@ DefaultExceptionHandlerLib|Include/Library/DefaultExceptionHandlerLib.h
ArmDisassemblerLib|Include/Library/ArmDisassemblerLib.h
ArmGicArchLib|Include/Library/ArmGicArchLib.h
+ ArmMtlLib|ArmPlatformPkg/Include/Library/ArmMtlLib.h
ArmSvcLib|Include/Library/ArmSvcLib.h
[Guids.common]
diff --git a/ArmPkg/Include/Library/ArmMtlLib.h b/ArmPkg/Include/Library/ArmMtlLib.h new file mode 100644 index 0000000000..4218a741e5 --- /dev/null +++ b/ArmPkg/Include/Library/ArmMtlLib.h @@ -0,0 +1,137 @@ +/** @file
+
+ Copyright (c) 2017-2018, Arm Limited. All rights reserved.
+
+ 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.
+
+ System Control and Management Interface V1.0
+ http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/
+ DEN0056A_System_Control_and_Management_Interface.pdf
+**/
+
+#ifndef ARM_MTL_LIB_H_
+#define ARM_MTL_LIB_H_
+
+#include <Uefi/UefiBaseType.h>
+
+// Ideally we don't need packed struct. However we can't rely on compilers.
+#pragma pack(1)
+
+typedef struct {
+ UINT32 Reserved1;
+ UINT32 ChannelStatus;
+ UINT64 Reserved2;
+ UINT32 Flags;
+ UINT32 Length;
+ UINT32 MessageHeader;
+
+ // NOTE: Since EDK2 does not allow flexible array member [] we declare
+ // here array of 1 element length. However below is used as a variable
+ // length array.
+ UINT32 Payload[1]; // size less object gives offset to payload.
+} MTL_MAILBOX;
+
+#pragma pack()
+
+// Channel Type, Low-priority, and High-priority
+typedef enum {
+ MTL_CHANNEL_TYPE_LOW = 0,
+ MTL_CHANNEL_TYPE_HIGH = 1
+} MTL_CHANNEL_TYPE;
+
+typedef struct {
+ UINT64 PhysicalAddress;
+ UINT32 ModifyMask;
+ UINT32 PreserveMask;
+} MTL_DOORBELL;
+
+typedef struct {
+ MTL_CHANNEL_TYPE ChannelType;
+ MTL_MAILBOX * CONST MailBox;
+ MTL_DOORBELL DoorBell;
+} MTL_CHANNEL;
+
+/** Wait until channel is free.
+
+ @param[in] Channel Pointer to a channel.
+ @param[in] TimeOutInMicroSeconds Time out in micro seconds.
+
+ @retval EFI_SUCCESS Channel is free.
+ @retval EFI_TIMEOUT Time out error.
+**/
+EFI_STATUS
+MtlWaitUntilChannelFree (
+ IN MTL_CHANNEL *Channel,
+ IN UINT64 TimeOutInMicroSeconds
+ );
+
+/** 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
+ );
+
+/** 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_SUCCESS Pointer to channel is returned.
+ @retval EFI_UNSUPPORTED Requested channel type not supported.
+**/
+EFI_STATUS
+MtlGetChannel (
+ IN MTL_CHANNEL_TYPE ChannelType,
+ OUT MTL_CHANNEL **Channel
+ );
+
+/** 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_SUCCESS Message sent successfully.
+ @retval EFI_DEVICE_ERROR Channel is busy.
+**/
+EFI_STATUS
+MtlSendMessage (
+ IN MTL_CHANNEL *Channel,
+ IN UINT32 MessageHeader,
+ OUT UINT32 PayloadLength
+ );
+
+/** 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_SUCCESS Message received successfully.
+ @retval EFI_TIMEOUT Time out error.
+**/
+EFI_STATUS
+MtlReceiveMessage (
+ IN MTL_CHANNEL *Channel,
+ OUT UINT32 *MessageHeader,
+ OUT UINT32 *PayloadLength
+ );
+
+#endif /* ARM_MTL_LIB_H_ */
+
diff --git a/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.c b/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.c new file mode 100644 index 0000000000..f186237111 --- /dev/null +++ b/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.c @@ -0,0 +1,108 @@ +/** @file
+
+ Copyright (c) 2017-2018, Arm Limited. All rights reserved.
+
+ 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.
+
+ 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;
+}
diff --git a/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.inf b/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.inf new file mode 100644 index 0000000000..9c0426b00e --- /dev/null +++ b/ArmPkg/Library/ArmMtlNullLib/ArmMtlNullLib.inf @@ -0,0 +1,26 @@ +#/** @file
+# Copyright (c) 2017-2018, Arm Limited. All rights reserved.
+#
+# 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 = 0x00010019
+ BASE_NAME = ArmMtlNullLib
+ FILE_GUID = 05810525-FDEC-4006-9F1F-37609B3675FA
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ArmMtlLib
+
+[Sources.common]
+ ArmMtlNullLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ MdePkg/MdePkg.dec
|