162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ciconfig STM 362306a36Sopenharmony_ci tristate "System Trace Module devices" 462306a36Sopenharmony_ci select CONFIGFS_FS 562306a36Sopenharmony_ci help 662306a36Sopenharmony_ci A System Trace Module (STM) is a device exporting data in System 762306a36Sopenharmony_ci Trace Protocol (STP) format as defined by MIPI STP standards. 862306a36Sopenharmony_ci Examples of such devices are Intel(R) Trace Hub and Coresight STM. 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci Say Y here to enable System Trace Module device support. 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ciif STM 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ciconfig STM_PROTO_BASIC 1562306a36Sopenharmony_ci tristate "Basic STM framing protocol driver" 1662306a36Sopenharmony_ci default CONFIG_STM 1762306a36Sopenharmony_ci help 1862306a36Sopenharmony_ci This is a simple framing protocol for sending data over STM 1962306a36Sopenharmony_ci devices. This was the protocol that the STM framework used 2062306a36Sopenharmony_ci exclusively until the MIPI SyS-T support was added. Use this 2162306a36Sopenharmony_ci driver for compatibility with your existing STM setup. 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci The receiving side only needs to be able to decode the MIPI 2462306a36Sopenharmony_ci STP protocol in order to extract the data. 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci If you want to be able to use the basic protocol or want the 2762306a36Sopenharmony_ci backwards compatibility for your existing setup, say Y. 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ciconfig STM_PROTO_SYS_T 3062306a36Sopenharmony_ci tristate "MIPI SyS-T STM framing protocol driver" 3162306a36Sopenharmony_ci default CONFIG_STM 3262306a36Sopenharmony_ci help 3362306a36Sopenharmony_ci This is an implementation of MIPI SyS-T protocol to be used 3462306a36Sopenharmony_ci over the STP transport. In addition to the data payload, it 3562306a36Sopenharmony_ci also carries additional metadata for time correlation, better 3662306a36Sopenharmony_ci means of trace source identification, etc. 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci The receiving side must be able to decode this protocol in 3962306a36Sopenharmony_ci addition to the MIPI STP, in order to extract the data. 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci If you don't know what this is, say N. 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ciconfig STM_DUMMY 4462306a36Sopenharmony_ci tristate "Dummy STM driver" 4562306a36Sopenharmony_ci help 4662306a36Sopenharmony_ci This is a simple dummy device that pretends to be an stm device 4762306a36Sopenharmony_ci and discards your data. Use for stm class testing. 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ci If you don't know what this is, say N. 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ciconfig STM_SOURCE_CONSOLE 5262306a36Sopenharmony_ci tristate "Kernel console over STM devices" 5362306a36Sopenharmony_ci help 5462306a36Sopenharmony_ci This is a kernel space trace source that sends kernel log 5562306a36Sopenharmony_ci messages to trace hosts over STM devices. 5662306a36Sopenharmony_ci 5762306a36Sopenharmony_ci If you want to send kernel console messages over STM devices, 5862306a36Sopenharmony_ci say Y. 5962306a36Sopenharmony_ci 6062306a36Sopenharmony_ciconfig STM_SOURCE_HEARTBEAT 6162306a36Sopenharmony_ci tristate "Heartbeat over STM devices" 6262306a36Sopenharmony_ci help 6362306a36Sopenharmony_ci This is a kernel space trace source that sends periodic 6462306a36Sopenharmony_ci heartbeat messages to trace hosts over STM devices. It is 6562306a36Sopenharmony_ci also useful for testing stm class drivers and the stm class 6662306a36Sopenharmony_ci framework itself. 6762306a36Sopenharmony_ci 6862306a36Sopenharmony_ci If you want to send heartbeat messages over STM devices, 6962306a36Sopenharmony_ci say Y. 7062306a36Sopenharmony_ci 7162306a36Sopenharmony_ciconfig STM_SOURCE_FTRACE 7262306a36Sopenharmony_ci tristate "Copy the output from kernel Ftrace to STM engine" 7362306a36Sopenharmony_ci depends on TRACING 7462306a36Sopenharmony_ci help 7562306a36Sopenharmony_ci This option can be used to copy the output from kernel Ftrace 7662306a36Sopenharmony_ci to STM engine. Enabling this option will introduce a slight 7762306a36Sopenharmony_ci timing effect. 7862306a36Sopenharmony_ci 7962306a36Sopenharmony_ci If you want to send kernel Ftrace messages over STM devices, 8062306a36Sopenharmony_ci say Y. 8162306a36Sopenharmony_ci 8262306a36Sopenharmony_ciendif 83