184 lines
6.5 KiB
Plaintext
184 lines
6.5 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
menu "ARM System Control and Management Interface Protocol"
|
|
|
|
config ARM_SCMI_PROTOCOL
|
|
tristate "ARM System Control and Management Interface (SCMI) Message Protocol"
|
|
depends on ARM || ARM64 || COMPILE_TEST
|
|
help
|
|
ARM System Control and Management Interface (SCMI) protocol is a
|
|
set of operating system-independent software interfaces that are
|
|
used in system management. SCMI is extensible and currently provides
|
|
interfaces for: Discovery and self-description of the interfaces
|
|
it supports, Power domain management which is the ability to place
|
|
a given device or domain into the various power-saving states that
|
|
it supports, Performance management which is the ability to control
|
|
the performance of a domain that is composed of compute engines
|
|
such as application processors and other accelerators, Clock
|
|
management which is the ability to set and inquire rates on platform
|
|
managed clocks and Sensor management which is the ability to read
|
|
sensor data, and be notified of sensor value.
|
|
|
|
This protocol library provides interface for all the client drivers
|
|
making use of the features offered by the SCMI.
|
|
|
|
if ARM_SCMI_PROTOCOL
|
|
|
|
config ARM_SCMI_NEED_DEBUGFS
|
|
bool
|
|
help
|
|
This declares whether at least one SCMI facility is configured
|
|
which needs debugfs support. When selected causess the creation
|
|
of a common SCMI debugfs root directory.
|
|
|
|
config ARM_SCMI_RAW_MODE_SUPPORT
|
|
bool "Enable support for SCMI Raw transmission mode"
|
|
depends on DEBUG_FS
|
|
select ARM_SCMI_NEED_DEBUGFS
|
|
help
|
|
Enable support for SCMI Raw transmission mode.
|
|
|
|
If enabled allows the direct injection and snooping of SCMI bare
|
|
messages through a dedicated debugfs interface.
|
|
It is meant to be used by SCMI compliance/testing suites.
|
|
|
|
When enabled regular SCMI drivers interactions are inhibited in
|
|
order to avoid unexpected interactions with the SCMI Raw message
|
|
flow. If unsure say N.
|
|
|
|
config ARM_SCMI_RAW_MODE_SUPPORT_COEX
|
|
bool "Allow SCMI Raw mode coexistence with normal SCMI stack"
|
|
depends on ARM_SCMI_RAW_MODE_SUPPORT
|
|
help
|
|
Allow SCMI Raw transmission mode to coexist with normal SCMI stack.
|
|
|
|
This will allow regular SCMI drivers to register with the core and
|
|
operate normally, thing which could make an SCMI test suite using the
|
|
SCMI Raw mode support unreliable. If unsure, say N.
|
|
|
|
config ARM_SCMI_HAVE_TRANSPORT
|
|
bool
|
|
help
|
|
This declares whether at least one SCMI transport has been configured.
|
|
Used to trigger a build bug when trying to build SCMI without any
|
|
configured transport.
|
|
|
|
config ARM_SCMI_HAVE_SHMEM
|
|
bool
|
|
help
|
|
This declares whether a shared memory based transport for SCMI is
|
|
available.
|
|
|
|
config ARM_SCMI_HAVE_MSG
|
|
bool
|
|
help
|
|
This declares whether a message passing based transport for SCMI is
|
|
available.
|
|
|
|
config ARM_SCMI_TRANSPORT_MAILBOX
|
|
bool "SCMI transport based on Mailbox"
|
|
depends on MAILBOX
|
|
select ARM_SCMI_HAVE_TRANSPORT
|
|
select ARM_SCMI_HAVE_SHMEM
|
|
default y
|
|
help
|
|
Enable mailbox based transport for SCMI.
|
|
|
|
If you want the ARM SCMI PROTOCOL stack to include support for a
|
|
transport based on mailboxes, answer Y.
|
|
|
|
config ARM_SCMI_TRANSPORT_OPTEE
|
|
bool "SCMI transport based on OP-TEE service"
|
|
depends on OPTEE=y || OPTEE=ARM_SCMI_PROTOCOL
|
|
select ARM_SCMI_HAVE_TRANSPORT
|
|
select ARM_SCMI_HAVE_SHMEM
|
|
select ARM_SCMI_HAVE_MSG
|
|
default y
|
|
help
|
|
This enables the OP-TEE service based transport for SCMI.
|
|
|
|
If you want the ARM SCMI PROTOCOL stack to include support for a
|
|
transport based on OP-TEE SCMI service, answer Y.
|
|
|
|
config ARM_SCMI_TRANSPORT_SMC
|
|
bool "SCMI transport based on SMC"
|
|
depends on HAVE_ARM_SMCCC_DISCOVERY
|
|
select ARM_SCMI_HAVE_TRANSPORT
|
|
select ARM_SCMI_HAVE_SHMEM
|
|
default y
|
|
help
|
|
Enable SMC based transport for SCMI.
|
|
|
|
If you want the ARM SCMI PROTOCOL stack to include support for a
|
|
transport based on SMC, answer Y.
|
|
|
|
config ARM_SCMI_TRANSPORT_SMC_ATOMIC_ENABLE
|
|
bool "Enable atomic mode support for SCMI SMC transport"
|
|
depends on ARM_SCMI_TRANSPORT_SMC
|
|
help
|
|
Enable support of atomic operation for SCMI SMC based transport.
|
|
|
|
If you want the SCMI SMC based transport to operate in atomic
|
|
mode, avoiding any kind of sleeping behaviour for selected
|
|
transactions on the TX path, answer Y.
|
|
Enabling atomic mode operations allows any SCMI driver using this
|
|
transport to optionally ask for atomic SCMI transactions and operate
|
|
in atomic context too, at the price of using a number of busy-waiting
|
|
primitives all over instead. If unsure say N.
|
|
|
|
config ARM_SCMI_TRANSPORT_VIRTIO
|
|
bool "SCMI transport based on VirtIO"
|
|
depends on VIRTIO=y || VIRTIO=ARM_SCMI_PROTOCOL
|
|
select ARM_SCMI_HAVE_TRANSPORT
|
|
select ARM_SCMI_HAVE_MSG
|
|
help
|
|
This enables the virtio based transport for SCMI.
|
|
|
|
If you want the ARM SCMI PROTOCOL stack to include support for a
|
|
transport based on VirtIO, answer Y.
|
|
|
|
config ARM_SCMI_TRANSPORT_VIRTIO_VERSION1_COMPLIANCE
|
|
bool "SCMI VirtIO transport Version 1 compliance"
|
|
depends on ARM_SCMI_TRANSPORT_VIRTIO
|
|
default y
|
|
help
|
|
This enforces strict compliance with VirtIO Version 1 specification.
|
|
|
|
If you want the ARM SCMI VirtIO transport layer to refuse to work
|
|
with Legacy VirtIO backends and instead support only VirtIO Version 1
|
|
devices (or above), answer Y.
|
|
|
|
If you want instead to support also old Legacy VirtIO backends (like
|
|
the ones implemented by kvmtool) and let the core Kernel VirtIO layer
|
|
take care of the needed conversions, say N.
|
|
|
|
config ARM_SCMI_TRANSPORT_VIRTIO_ATOMIC_ENABLE
|
|
bool "Enable atomic mode for SCMI VirtIO transport"
|
|
depends on ARM_SCMI_TRANSPORT_VIRTIO
|
|
help
|
|
Enable support of atomic operation for SCMI VirtIO based transport.
|
|
|
|
If you want the SCMI VirtIO based transport to operate in atomic
|
|
mode, avoiding any kind of sleeping behaviour for selected
|
|
transactions on the TX path, answer Y.
|
|
|
|
Enabling atomic mode operations allows any SCMI driver using this
|
|
transport to optionally ask for atomic SCMI transactions and operate
|
|
in atomic context too, at the price of using a number of busy-waiting
|
|
primitives all over instead. If unsure say N.
|
|
|
|
endif #ARM_SCMI_PROTOCOL
|
|
|
|
config ARM_SCMI_POWER_CONTROL
|
|
tristate "SCMI system power control driver"
|
|
depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF)
|
|
help
|
|
This enables System Power control logic which binds system shutdown or
|
|
reboot actions to SCMI System Power notifications generated by SCP
|
|
firmware.
|
|
|
|
This driver can also be built as a module. If so, the module will be
|
|
called scmi_power_control. Note this may needed early in boot to catch
|
|
early shutdown/reboot SCMI requests.
|
|
|
|
endmenu
|