84 lines
2.6 KiB
Plaintext
84 lines
2.6 KiB
Plaintext
|
# SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
config STM
|
||
|
|
tristate "System Trace Module devices"
|
||
|
|
select CONFIGFS_FS
|
||
|
|
select SRCU
|
||
|
|
help
|
||
|
|
A System Trace Module (STM) is a device exporting data in System
|
||
|
|
Trace Protocol (STP) format as defined by MIPI STP standards.
|
||
|
|
Examples of such devices are Intel(R) Trace Hub and Coresight STM.
|
||
|
|
|
||
|
|
Say Y here to enable System Trace Module device support.
|
||
|
|
|
||
|
|
if STM
|
||
|
|
|
||
|
|
config STM_PROTO_BASIC
|
||
|
|
tristate "Basic STM framing protocol driver"
|
||
|
|
default CONFIG_STM
|
||
|
|
help
|
||
|
|
This is a simple framing protocol for sending data over STM
|
||
|
|
devices. This was the protocol that the STM framework used
|
||
|
|
exclusively until the MIPI SyS-T support was added. Use this
|
||
|
|
driver for compatibility with your existing STM setup.
|
||
|
|
|
||
|
|
The receiving side only needs to be able to decode the MIPI
|
||
|
|
STP protocol in order to extract the data.
|
||
|
|
|
||
|
|
If you want to be able to use the basic protocol or want the
|
||
|
|
backwards compatibility for your existing setup, say Y.
|
||
|
|
|
||
|
|
config STM_PROTO_SYS_T
|
||
|
|
tristate "MIPI SyS-T STM framing protocol driver"
|
||
|
|
default CONFIG_STM
|
||
|
|
help
|
||
|
|
This is an implementation of MIPI SyS-T protocol to be used
|
||
|
|
over the STP transport. In addition to the data payload, it
|
||
|
|
also carries additional metadata for time correlation, better
|
||
|
|
means of trace source identification, etc.
|
||
|
|
|
||
|
|
The receiving side must be able to decode this protocol in
|
||
|
|
addition to the MIPI STP, in order to extract the data.
|
||
|
|
|
||
|
|
If you don't know what this is, say N.
|
||
|
|
|
||
|
|
config STM_DUMMY
|
||
|
|
tristate "Dummy STM driver"
|
||
|
|
help
|
||
|
|
This is a simple dummy device that pretends to be an stm device
|
||
|
|
and discards your data. Use for stm class testing.
|
||
|
|
|
||
|
|
If you don't know what this is, say N.
|
||
|
|
|
||
|
|
config STM_SOURCE_CONSOLE
|
||
|
|
tristate "Kernel console over STM devices"
|
||
|
|
help
|
||
|
|
This is a kernel space trace source that sends kernel log
|
||
|
|
messages to trace hosts over STM devices.
|
||
|
|
|
||
|
|
If you want to send kernel console messages over STM devices,
|
||
|
|
say Y.
|
||
|
|
|
||
|
|
config STM_SOURCE_HEARTBEAT
|
||
|
|
tristate "Heartbeat over STM devices"
|
||
|
|
help
|
||
|
|
This is a kernel space trace source that sends periodic
|
||
|
|
heartbeat messages to trace hosts over STM devices. It is
|
||
|
|
also useful for testing stm class drivers and the stm class
|
||
|
|
framework itself.
|
||
|
|
|
||
|
|
If you want to send heartbeat messages over STM devices,
|
||
|
|
say Y.
|
||
|
|
|
||
|
|
config STM_SOURCE_FTRACE
|
||
|
|
tristate "Copy the output from kernel Ftrace to STM engine"
|
||
|
|
depends on TRACING
|
||
|
|
help
|
||
|
|
This option can be used to copy the output from kernel Ftrace
|
||
|
|
to STM engine. Enabling this option will introduce a slight
|
||
|
|
timing effect.
|
||
|
|
|
||
|
|
If you want to send kernel Ftrace messages over STM devices,
|
||
|
|
say Y.
|
||
|
|
|
||
|
|
endif
|