1# SPDX-License-Identifier: GPL-2.0-only
  2#
  3# Coresight configuration
  4#
  5menuconfig CORESIGHT
  6	tristate "CoreSight Tracing Support"
  7	depends on ARM || ARM64
  8	depends on OF || ACPI
  9	select ARM_AMBA
 10	select PERF_EVENTS
 11	help
 12	  This framework provides a kernel interface for the CoreSight debug
 13	  and trace drivers to register themselves with. It's intended to build
 14	  a topological view of the CoreSight components based on a DT
 15	  specification and configure the right series of components when a
 16	  trace source gets enabled.
 17
 18	  To compile this driver as a module, choose M here: the
 19	  module will be called coresight.
 20
 21if CORESIGHT
 22config CORESIGHT_LINKS_AND_SINKS
 23	tristate "CoreSight Link and Sink drivers"
 24	help
 25	  This enables support for CoreSight link and sink drivers that are
 26	  responsible for transporting and collecting the trace data
 27	  respectively.  Link and sinks are dynamically aggregated with a trace
 28	  entity at run time to form a complete trace path.
 29
 30	  To compile these drivers as modules, choose M here: the
 31	  modules will be called coresight-funnel and coresight-replicator.
 32
 33config CORESIGHT_LINK_AND_SINK_TMC
 34	tristate "Coresight generic TMC driver"
 35
 36	depends on CORESIGHT_LINKS_AND_SINKS
 37	help
 38	  This enables support for the Trace Memory Controller driver.
 39	  Depending on its configuration the device can act as a link (embedded
 40	  trace router - ETR) or sink (embedded trace FIFO).  The driver
 41	  complies with the generic implementation of the component without
 42	  special enhancement or added features.
 43
 44	  To compile this driver as a module, choose M here: the
 45	  module will be called coresight-tmc.
 46
 47config CORESIGHT_CATU
 48	tristate "Coresight Address Translation Unit (CATU) driver"
 49	depends on CORESIGHT_LINK_AND_SINK_TMC
 50	help
 51	   Enable support for the Coresight Address Translation Unit (CATU).
 52	   CATU supports a scatter gather table of 4K pages, with forward/backward
 53	   lookup. CATU helps TMC ETR to use a large physically non-contiguous trace
 54	   buffer by translating the addresses used by ETR to the physical address
 55	   by looking up the provided table. CATU can also be used in pass-through
 56	   mode where the address is not translated.
 57
 58	   To compile this driver as a module, choose M here: the
 59	   module will be called coresight-catu.
 60
 61config CORESIGHT_SINK_TPIU
 62	tristate "Coresight generic TPIU driver"
 63	depends on CORESIGHT_LINKS_AND_SINKS
 64	help
 65	  This enables support for the Trace Port Interface Unit driver,
 66	  responsible for bridging the gap between the on-chip coresight
 67	  components and a trace for bridging the gap between the on-chip
 68	  coresight components and a trace port collection engine, typically
 69	  connected to an external host for use case capturing more traces than
 70	  the on-board coresight memory can handle.
 71
 72	  To compile this driver as a module, choose M here: the
 73	  module will be called coresight-tpiu.
 74
 75config CORESIGHT_SINK_ETBV10
 76	tristate "Coresight ETBv1.0 driver"
 77	depends on CORESIGHT_LINKS_AND_SINKS
 78	help
 79	  This enables support for the Embedded Trace Buffer version 1.0 driver
 80	  that complies with the generic implementation of the component without
 81	  special enhancement or added features.
 82
 83	  To compile this driver as a module, choose M here: the
 84	  module will be called coresight-etb10.
 85
 86config CORESIGHT_SOURCE_ETM3X
 87	tristate "CoreSight Embedded Trace Macrocell 3.x driver"
 88	depends on !ARM64
 89	select CORESIGHT_LINKS_AND_SINKS
 90	help
 91	  This driver provides support for processor ETM3.x and PTM1.x modules,
 92	  which allows tracing the instructions that a processor is executing
 93	  This is primarily useful for instruction level tracing.  Depending
 94	  the ETM version data tracing may also be available.
 95
 96	  To compile this driver as a module, choose M here: the
 97	  module will be called coresight-etm3x.
 98
 99config CORESIGHT_SOURCE_ETM4X
100	tristate "CoreSight ETMv4.x / ETE driver"
101	depends on ARM64
102	select CORESIGHT_LINKS_AND_SINKS
103	select PID_IN_CONTEXTIDR
104	help
105	  This driver provides support for the CoreSight Embedded Trace Macrocell
106	  version 4.x and the Embedded Trace Extensions (ETE). Both are CPU tracer
107	  modules, tracing the instructions that a processor is executing. This is
108	  primarily useful for instruction level tracing.
109
110	  To compile this driver as a module, choose M here: the
111	  module will be called coresight-etm4x.
112
113config ETM4X_IMPDEF_FEATURE
114	bool "Control implementation defined overflow support in ETM 4.x driver"
115	depends on CORESIGHT_SOURCE_ETM4X
116	help
117	  This control provides implementation define control for CoreSight
118	  ETM 4.x tracer module that can't reduce commit rate automatically.
119	  This avoids overflow between the ETM tracer module and the cpu core.
120
121config CORESIGHT_STM
122	tristate "CoreSight System Trace Macrocell driver"
123	depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64
124	select CORESIGHT_LINKS_AND_SINKS
125	select STM
126	help
127	  This driver provides support for hardware assisted software
128	  instrumentation based tracing. This is primarily used for
129	  logging useful software events or data coming from various entities
130	  in the system, possibly running different OSs
131
132	  To compile this driver as a module, choose M here: the
133	  module will be called coresight-stm.
134
135config CORESIGHT_CPU_DEBUG
136	tristate "CoreSight CPU Debug driver"
137	depends on ARM || ARM64
138	depends on DEBUG_FS
139	help
140	  This driver provides support for coresight debugging module. This
141	  is primarily used to dump sample-based profiling registers when
142	  system triggers panic, the driver will parse context registers so
143	  can quickly get to know program counter (PC), secure state,
144	  exception level, etc. Before use debugging functionality, platform
145	  needs to ensure the clock domain and power domain are enabled
146	  properly, please refer Documentation/trace/coresight/coresight-cpu-debug.rst
147	  for detailed description and the example for usage.
148
149	  To compile this driver as a module, choose M here: the
150	  module will be called coresight-cpu-debug.
151
152config CORESIGHT_CTI
153	tristate "CoreSight Cross Trigger Interface (CTI) driver"
154	depends on ARM || ARM64
155	help
156	  This driver provides support for CoreSight CTI and CTM components.
157	  These provide hardware triggering events between CoreSight trace
158	  source and sink components. These can be used to halt trace or
159	  inject events into the trace stream. CTI also provides a software
160	  control to trigger the same halt events. This can provide fast trace
161	  halt compared to disabling sources and sinks normally in driver
162	  software.
163
164	  To compile this driver as a module, choose M here: the
165	  module will be called coresight-cti.
166
167config CORESIGHT_CTI_INTEGRATION_REGS
168	bool "Access CTI CoreSight Integration Registers"
169	depends on CORESIGHT_CTI
170	help
171	  This option adds support for the CoreSight integration registers on
172	  this device. The integration registers allow the exploration of the
173	  CTI trigger connections between this and other devices.These
174	  registers are not used in normal operation and can leave devices in
175	  an inconsistent state.
176
177config CORESIGHT_TRBE
178	tristate "Trace Buffer Extension (TRBE) driver"
179	depends on ARM64 && CORESIGHT_SOURCE_ETM4X
180	help
181	  This driver provides support for percpu Trace Buffer Extension (TRBE).
182	  TRBE always needs to be used along with it's corresponding percpu ETE
183	  component. ETE generates trace data which is then captured with TRBE.
184	  Unlike traditional sink devices, TRBE is a CPU feature accessible via
185	  system registers. But it's explicit dependency with trace unit (ETE)
186	  requires it to be plugged in as a coresight sink device.
187
188	  To compile this driver as a module, choose M here: the module will be
189	  called coresight-trbe.
190endif