3 source "lib/Kconfig.debug"
6 bool "Filter access to /dev/mem"
9 If this option is disabled, you allow userspace (root) access to all
10 of memory, including kernel and userspace memory. Accidental
11 access to this is obviously disastrous, but specific access can
12 be used by people debugging the kernel.
14 If this option is switched on, the /dev/mem file only allows
15 userspace access to memory mapped peripherals.
19 # RMK wants arm kernels compiled with frame pointers or stack unwinding.
20 # If you know what you are doing and are willing to live without stack
21 # traces, you can get a slightly smaller kernel by setting this option to
22 # n, but then RMK will have to kill you ;).
25 depends on !THUMB2_KERNEL
26 default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
28 If you say N here, the resulting kernel will be slightly smaller and
29 faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
30 when a problem occurs with the kernel, the information that is
31 reported is severely limited.
34 bool "Enable stack unwinding support (EXPERIMENTAL)"
38 This option enables stack unwinding support in the kernel
39 using the information automatically generated by the
40 compiler. The resulting kernel image is slightly bigger but
41 the performance is not affected. Currently, this feature
42 only works with EABI compilers. If unsure say Y.
46 depends on FUNCTION_TRACER && FRAME_POINTER
50 bool "Verbose user fault messages"
52 When a user program crashes due to an exception, the kernel can
53 print a brief message explaining what the problem was. This is
54 sometimes helpful for debugging but serves no purpose on a
55 production system. Most people should say N here.
57 In addition, you need to pass user_debug=N on the kernel command
58 line to enable this feature. N consists of the sum of:
60 1 - undefined instruction events
62 4 - invalid data aborts
67 bool "Write protect kernel text section"
69 depends on DEBUG_KERNEL && MMU
71 Mark the kernel text section as write-protected in the pagetables,
72 in order to catch accidental (and incorrect) writes to such const
73 data. This will cause the size of the kernel, plus up to 4MB, to
74 be mapped as pages instead of sections, which will increase TLB
78 config DEBUG_RODATA_TEST
79 bool "Testcase for the DEBUG_RODATA feature"
80 depends on DEBUG_RODATA
83 This option enables a testcase for the DEBUG_RODATA
87 # These options are only for real kernel hackers who want to get their hands dirty.
89 bool "Kernel low-level debugging functions (read help!)"
90 depends on DEBUG_KERNEL
92 Say Y here to include definitions of printascii, printch, printhex
93 in the kernel. This is helpful if you are debugging code that
94 executes before the console is initialized.
96 Note that selecting this option will limit the kernel to a single
97 UART definition, as specified below. Attempting to boot the kernel
98 image on a different platform *will not work*, so this option should
99 not be enabled for kernels that are intended to be portable.
102 prompt "Kernel low-level debugging port"
105 config AT91_DEBUG_LL_DBGU0
106 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
107 depends on HAVE_AT91_DBGU0
109 config AT91_DEBUG_LL_DBGU1
110 bool "Kernel low-level debugging on 9263 and 9g45"
111 depends on HAVE_AT91_DBGU1
114 bool "Kernel low-level debugging on BCM2835 PL011 UART"
115 depends on ARCH_BCM2835
117 config DEBUG_CLPS711X_UART1
118 bool "Kernel low-level debugging messages via UART1"
119 depends on ARCH_CLPS711X
121 Say Y here if you want the debug print routines to direct
122 their output to the first serial port on these devices.
124 config DEBUG_CLPS711X_UART2
125 bool "Kernel low-level debugging messages via UART2"
126 depends on ARCH_CLPS711X
128 Say Y here if you want the debug print routines to direct
129 their output to the second serial port on these devices.
132 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
133 depends on ARCH_CNS3XXX
135 Say Y here if you want the debug print routines to direct
136 their output to the CNS3xxx UART0.
138 config DEBUG_DAVINCI_DA8XX_UART1
139 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
140 depends on ARCH_DAVINCI_DA8XX
142 Say Y here if you want the debug print routines to direct
143 their output to UART1 serial port on DaVinci DA8XX devices.
145 config DEBUG_DAVINCI_DA8XX_UART2
146 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
147 depends on ARCH_DAVINCI_DA8XX
149 Say Y here if you want the debug print routines to direct
150 their output to UART2 serial port on DaVinci DA8XX devices.
152 config DEBUG_DAVINCI_DMx_UART0
153 bool "Kernel low-level debugging on DaVinci DMx using UART0"
154 depends on ARCH_DAVINCI_DMx
156 Say Y here if you want the debug print routines to direct
157 their output to UART0 serial port on DaVinci DMx devices.
159 config DEBUG_DAVINCI_TNETV107X_UART1
160 bool "Kernel low-level debugging on DaVinci TNETV107x using UART1"
161 depends on ARCH_DAVINCI_TNETV107X
163 Say Y here if you want the debug print routines to direct
164 their output to UART1 serial port on DaVinci TNETV107X
167 config DEBUG_ZYNQ_UART0
168 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
171 Say Y here if you want the debug print routines to direct
172 their output to UART0 on the Zynq platform.
174 config DEBUG_ZYNQ_UART1
175 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
178 Say Y here if you want the debug print routines to direct
179 their output to UART1 on the Zynq platform.
181 If you have a ZC702 board and want early boot messages to
182 appear on the USB serial adaptor, select this option.
184 config DEBUG_DC21285_PORT
185 bool "Kernel low-level debugging messages via footbridge serial port"
186 depends on FOOTBRIDGE
188 Say Y here if you want the debug print routines to direct
189 their output to the serial port in the DC21285 (Footbridge).
191 config DEBUG_FOOTBRIDGE_COM1
192 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
193 depends on FOOTBRIDGE
195 Say Y here if you want the debug print routines to direct
196 their output to the 8250 at PCI COM1.
198 config DEBUG_HIGHBANK_UART
199 bool "Kernel low-level debugging messages via Highbank UART"
200 depends on ARCH_HIGHBANK
202 Say Y here if you want the debug print routines to direct
203 their output to the UART on Highbank based devices.
205 config DEBUG_IMX1_UART
206 bool "i.MX1 Debug UART"
209 Say Y here if you want kernel low-level debugging support
212 config DEBUG_IMX23_UART
213 bool "i.MX23 Debug UART"
216 Say Y here if you want kernel low-level debugging support
219 config DEBUG_IMX25_UART
220 bool "i.MX25 Debug UART"
223 Say Y here if you want kernel low-level debugging support
226 config DEBUG_IMX21_IMX27_UART
227 bool "i.MX21 and i.MX27 Debug UART"
228 depends on SOC_IMX21 || SOC_IMX27
230 Say Y here if you want kernel low-level debugging support
233 config DEBUG_IMX28_UART
234 bool "i.MX28 Debug UART"
237 Say Y here if you want kernel low-level debugging support
240 config DEBUG_IMX31_UART
241 bool "i.MX31 Debug UART"
244 Say Y here if you want kernel low-level debugging support
247 config DEBUG_IMX35_UART
248 bool "i.MX35 Debug UART"
251 Say Y here if you want kernel low-level debugging support
254 config DEBUG_IMX51_UART
255 bool "i.MX51 Debug UART"
258 Say Y here if you want kernel low-level debugging support
261 config DEBUG_IMX53_UART
262 bool "i.MX53 Debug UART"
265 Say Y here if you want kernel low-level debugging support
268 config DEBUG_IMX6Q_UART
269 bool "i.MX6Q/DL Debug UART"
272 Say Y here if you want kernel low-level debugging support
275 config DEBUG_MMP_UART2
276 bool "Kernel low-level debugging message via MMP UART2"
279 Say Y here if you want kernel low-level debugging support
282 config DEBUG_MMP_UART3
283 bool "Kernel low-level debugging message via MMP UART3"
286 Say Y here if you want kernel low-level debugging support
289 config DEBUG_MSM_UART1
290 bool "Kernel low-level debugging messages via MSM UART1"
291 depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
293 Say Y here if you want the debug print routines to direct
294 their output to the first serial port on MSM devices.
296 config DEBUG_MSM_UART2
297 bool "Kernel low-level debugging messages via MSM UART2"
298 depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
300 Say Y here if you want the debug print routines to direct
301 their output to the second serial port on MSM devices.
303 config DEBUG_MSM_UART3
304 bool "Kernel low-level debugging messages via MSM UART3"
305 depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
307 Say Y here if you want the debug print routines to direct
308 their output to the third serial port on MSM devices.
310 config DEBUG_MSM8660_UART
311 bool "Kernel low-level debugging messages via MSM 8660 UART"
312 depends on ARCH_MSM8X60
313 select MSM_HAS_DEBUG_UART_HS
315 Say Y here if you want the debug print routines to direct
316 their output to the serial port on MSM 8660 devices.
318 config DEBUG_MSM8960_UART
319 bool "Kernel low-level debugging messages via MSM 8960 UART"
320 depends on ARCH_MSM8960
321 select MSM_HAS_DEBUG_UART_HS
323 Say Y here if you want the debug print routines to direct
324 their output to the serial port on MSM 8960 devices.
326 config DEBUG_MVEBU_UART
327 bool "Kernel low-level debugging messages via MVEBU UART"
328 depends on ARCH_MVEBU
330 Say Y here if you want kernel low-level debugging support
331 on MVEBU based platforms.
333 config DEBUG_NOMADIK_UART
334 bool "Kernel low-level debugging messages via NOMADIK UART"
335 depends on ARCH_NOMADIK
337 Say Y here if you want kernel low-level debugging support
338 on NOMADIK based platforms.
340 config DEBUG_OMAP2PLUS_UART
341 bool "Kernel low-level debugging messages via OMAP2PLUS UART"
342 depends on ARCH_OMAP2PLUS
344 Say Y here if you want kernel low-level debugging support
345 on OMAP2PLUS based platforms.
347 config DEBUG_PICOXCELL_UART
348 depends on ARCH_PICOXCELL
349 bool "Use PicoXcell UART for low-level debug"
351 Say Y here if you want kernel low-level debugging support
352 on PicoXcell based platforms.
354 config DEBUG_PXA_UART1
356 bool "Use PXA UART1 for low-level debug"
358 Say Y here if you want kernel low-level debugging support
361 config DEBUG_REALVIEW_STD_PORT
362 bool "RealView Default UART"
363 depends on ARCH_REALVIEW
365 Say Y here if you want the debug print routines to direct
366 their output to the serial port on RealView EB, PB11MP, PBA8
369 config DEBUG_REALVIEW_PB1176_PORT
370 bool "RealView PB1176 UART"
371 depends on MACH_REALVIEW_PB1176
373 Say Y here if you want the debug print routines to direct
374 their output to the standard serial port on the RealView
377 config DEBUG_S3C_UART0
378 depends on PLAT_SAMSUNG
379 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
380 bool "Use S3C UART 0 for low-level debug"
382 Say Y here if you want the debug print routines to direct
383 their output to UART 0. The port must have been initialised
384 by the boot-loader before use.
386 The uncompressor code port configuration is now handled
387 by CONFIG_S3C_LOWLEVEL_UART_PORT.
389 config DEBUG_S3C_UART1
390 depends on PLAT_SAMSUNG
391 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
392 bool "Use S3C UART 1 for low-level debug"
394 Say Y here if you want the debug print routines to direct
395 their output to UART 1. The port must have been initialised
396 by the boot-loader before use.
398 The uncompressor code port configuration is now handled
399 by CONFIG_S3C_LOWLEVEL_UART_PORT.
401 config DEBUG_S3C_UART2
402 depends on PLAT_SAMSUNG
403 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
404 bool "Use S3C UART 2 for low-level debug"
406 Say Y here if you want the debug print routines to direct
407 their output to UART 2. The port must have been initialised
408 by the boot-loader before use.
410 The uncompressor code port configuration is now handled
411 by CONFIG_S3C_LOWLEVEL_UART_PORT.
413 config DEBUG_S3C_UART3
414 depends on PLAT_SAMSUNG && ARCH_EXYNOS
415 select DEBUG_EXYNOS_UART
416 bool "Use S3C UART 3 for low-level debug"
418 Say Y here if you want the debug print routines to direct
419 their output to UART 3. The port must have been initialised
420 by the boot-loader before use.
422 The uncompressor code port configuration is now handled
423 by CONFIG_S3C_LOWLEVEL_UART_PORT.
425 config DEBUG_SOCFPGA_UART
426 depends on ARCH_SOCFPGA
427 bool "Use SOCFPGA UART for low-level debug"
429 Say Y here if you want kernel low-level debugging support
430 on SOCFPGA based platforms.
432 config DEBUG_SUNXI_UART0
433 bool "Kernel low-level debugging messages via sunXi UART0"
434 depends on ARCH_SUNXI
436 Say Y here if you want kernel low-level debugging support
437 on Allwinner A1X based platforms on the UART0.
439 config DEBUG_SUNXI_UART1
440 bool "Kernel low-level debugging messages via sunXi UART1"
441 depends on ARCH_SUNXI
443 Say Y here if you want kernel low-level debugging support
444 on Allwinner A1X based platforms on the UART1.
446 config DEBUG_TEGRA_UART
447 depends on ARCH_TEGRA
448 bool "Use Tegra UART for low-level debug"
450 Say Y here if you want kernel low-level debugging support
451 on Tegra based platforms.
453 config DEBUG_SIRFPRIMA2_UART1
454 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
455 depends on ARCH_PRIMA2
457 Say Y here if you want the debug print routines to direct
458 their output to the uart1 port on SiRFprimaII devices.
460 config DEBUG_SIRFMARCO_UART1
461 bool "Kernel low-level debugging messages via SiRFmarco UART1"
462 depends on ARCH_MARCO
464 Say Y here if you want the debug print routines to direct
465 their output to the uart1 port on SiRFmarco devices.
467 config DEBUG_UX500_UART
468 depends on ARCH_U8500
469 bool "Use Ux500 UART for low-level debug"
471 Say Y here if you want kernel low-level debugging support
472 on Ux500 based platforms.
474 config DEBUG_VEXPRESS_UART0_DETECT
475 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
476 depends on ARCH_VEXPRESS && CPU_CP15_MMU
478 This option enables a simple heuristic which tries to determine
479 the motherboard's memory map variant (original or RS1) and then
480 choose the relevant UART0 base address.
482 Note that this will only work with standard A-class core tiles,
483 and may fail with non-standard SMM or custom software models.
485 config DEBUG_VEXPRESS_UART0_CA9
486 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
487 depends on ARCH_VEXPRESS
489 This option selects UART0 at 0x10009000. Except for custom models,
490 this applies only to the V2P-CA9 tile.
492 config DEBUG_VEXPRESS_UART0_RS1
493 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
494 depends on ARCH_VEXPRESS
496 This option selects UART0 at 0x1c090000. This applies to most
497 of the tiles using the RS1 memory map, including all new A-class
498 core tiles, FPGA-based SMMs and software models.
500 config DEBUG_VT8500_UART0
501 bool "Use UART0 on VIA/Wondermedia SoCs"
502 depends on ARCH_VT8500
504 This option selects UART0 on VIA/Wondermedia System-on-a-chip
505 devices, including VT8500, WM8505, WM8650 and WM8850.
507 config DEBUG_LL_UART_NONE
508 bool "No low-level debugging UART"
509 depends on !ARCH_MULTIPLATFORM
511 Say Y here if your platform doesn't provide a UART option
512 below. This relies on your platform choosing the right UART
513 definition internally in order for low-level debugging to
517 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
519 Say Y here if you want the debug print routines to direct
520 their output to the EmbeddedICE macrocell's DCC channel using
521 co-processor 14. This is known to work on the ARM9 style ICE
522 channel and on the XScale with the PEEDI.
524 Note that the system will appear to hang during boot if there
525 is nothing connected to read from the DCC.
527 config DEBUG_SEMIHOSTING
528 bool "Kernel low-level debug output via semihosting I/O"
530 Semihosting enables code running on an ARM target to use
531 the I/O facilities on a host debugger/emulator through a
532 simple SVC call. The host debugger or emulator must have
533 semihosting enabled for the special svc call to be trapped
534 otherwise the kernel will crash.
536 This is known to work with OpenOCD, as well as
537 ARM's Fast Models, or any other controlling environment
538 that implements semihosting.
540 For more details about semihosting, please see
541 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
545 config DEBUG_EXYNOS_UART
548 config DEBUG_IMX_UART_PORT
549 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
550 DEBUG_IMX25_UART || \
551 DEBUG_IMX21_IMX27_UART || \
552 DEBUG_IMX31_UART || \
553 DEBUG_IMX35_UART || \
554 DEBUG_IMX51_UART || \
555 DEBUG_IMX53_UART || \
560 Choose UART port on which kernel low-level debug messages
564 prompt "Low-level debug console UART"
565 depends on DEBUG_OMAP2PLUS_UART
567 config DEBUG_OMAP2UART1
568 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
570 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
571 omap3 torpedo and 3530 lv som.
573 config DEBUG_OMAP2UART2
574 bool "OMAP2/3/4 UART2"
576 config DEBUG_OMAP2UART3
577 bool "OMAP2 UART3 (n8x0)"
579 config DEBUG_OMAP3UART3
580 bool "OMAP3 UART3 (most omap3 boards)"
582 This covers at least cm_t3x, beagle, crane, devkit8000,
583 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
586 config DEBUG_OMAP4UART3
587 bool "OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
589 config DEBUG_OMAP3UART4
590 bool "OMAP36XX UART4"
592 config DEBUG_OMAP4UART4
595 config DEBUG_TI81XXUART1
596 bool "TI81XX UART1 (ti8148evm)"
598 config DEBUG_TI81XXUART2
601 config DEBUG_TI81XXUART3
602 bool "TI81XX UART3 (ti8168evm)"
604 config DEBUG_AM33XXUART1
607 config DEBUG_ZOOM_UART
612 prompt "Low-level debug console UART"
613 depends on DEBUG_LL && DEBUG_TEGRA_UART
615 config TEGRA_DEBUG_UART_AUTO_ODMDATA
618 Automatically determines which UART to use for low-level debug based
619 on the ODMDATA value. This value is part of the BCT, and is written
620 to the boot memory device using nvflash, or other flashing tool.
621 When bits 19:18 are 3, then bits 17:15 indicate which UART to use;
622 0/1/2/3/4 are UART A/B/C/D/E.
624 config TEGRA_DEBUG_UARTA
627 config TEGRA_DEBUG_UARTB
630 config TEGRA_DEBUG_UARTC
633 config TEGRA_DEBUG_UARTD
636 config TEGRA_DEBUG_UARTE
641 config DEBUG_LL_INCLUDE
643 default "debug/bcm2835.S" if DEBUG_BCM2835
644 default "debug/cns3xxx.S" if DEBUG_CNS3XXX
645 default "debug/exynos.S" if DEBUG_EXYNOS_UART
646 default "debug/highbank.S" if DEBUG_HIGHBANK_UART
647 default "debug/icedcc.S" if DEBUG_ICEDCC
648 default "debug/imx.S" if DEBUG_IMX1_UART || \
649 DEBUG_IMX25_UART || \
650 DEBUG_IMX21_IMX27_UART || \
651 DEBUG_IMX31_UART || \
652 DEBUG_IMX35_UART || \
653 DEBUG_IMX51_UART || \
656 default "debug/mvebu.S" if DEBUG_MVEBU_UART
657 default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
658 default "debug/nomadik.S" if DEBUG_NOMADIK_UART
659 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
660 default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART
661 default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \
663 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
664 default "debug/socfpga.S" if DEBUG_SOCFPGA_UART
665 default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1
666 default "debug/tegra.S" if DEBUG_TEGRA_UART
667 default "debug/ux500.S" if DEBUG_UX500_UART
668 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \
669 DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1
670 default "debug/vt8500.S" if DEBUG_VT8500_UART0
671 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
672 default "mach/debug-macro.S"
674 config DEBUG_UNCOMPRESS
676 default y if ARCH_MULTIPLATFORM && DEBUG_LL && \
677 !DEBUG_OMAP2PLUS_UART && \
680 config UNCOMPRESS_INCLUDE
682 default "debug/uncompress.h" if ARCH_MULTIPLATFORM
683 default "mach/uncompress.h"
689 Say Y here if you want to have an early console using the
690 kernel low-level debugging functions. Add earlyprintk to your
691 kernel parameters to enable this console.
693 config ARM_KPROBES_TEST
694 tristate "Kprobes test module"
695 depends on KPROBES && MODULES
697 Perform tests of kprobes API and instruction set simulation.
699 config PID_IN_CONTEXTIDR
700 bool "Write the current PID to the CONTEXTIDR register"
701 depends on CPU_COPY_V6
703 Enabling this option causes the kernel to write the current PID to
704 the PROCID field of the CONTEXTIDR register, at the expense of some
705 additional instructions during context switch. Say Y here only if you
706 are planning to use hardware trace tools with this kernel.
708 config DEBUG_SET_MODULE_RONX
709 bool "Set loadable kernel module data as NX and text as RO"
712 This option helps catch unintended modifications to loadable
713 kernel module's text and read-only data. It also prevents execution
714 of module data. Such protection may interfere with run-time code
715 patching and dynamic kernel tracing - and they might also protect
716 against certain classes of kernel exploits.
717 If in doubt, say "N".
720 bool "CoreSight Tracing Support"
723 This framework provides a kernel interface for the CoreSight debug
724 and trace drivers to register themselves with. It's intended to build
725 a topological view of the CoreSight components based on a DT
726 specification and configure the right serie of components when a
727 trace source gets enabled.
730 config CORESIGHT_LINKS_AND_SINKS
731 bool "CoreSight Link and Sink drivers"
733 This enables support for CoreSight link and sink drivers that are
734 responsible for transporting and collecting the trace data
735 respectively. Link and sinks are dynamically aggregated with a trace
736 entity at run time to form a complete trace path.
738 config CORESIGHT_LINK_AND_SINK_TMC
739 bool "Coresight generic TMC driver"
740 depends on CORESIGHT_LINKS_AND_SINKS
742 This enables support for the Trace Memory Controller driver. Depending
743 on its configuration the device can act as a link (embedded trace router
744 - ETR) or sink (embedded trace FIFO). The driver complies with the
745 generic implementation of the component without special enhancement or
748 config CORESIGHT_SINK_TPIU
749 bool "Coresight generic TPIU driver"
750 depends on CORESIGHT_LINKS_AND_SINKS
752 This enables support for the Trace Port Interface Unit driver, responsible
753 for bridging the gap between the on-chip coresight components and a trace
754 port collection engine, typically connected to an external host for use
755 case capturing more traces than the on-board coresight memory can handle.
757 config CORESIGHT_SINK_ETBV10
758 bool "Coresight ETBv1.0 driver"
759 depends on CORESIGHT_LINKS_AND_SINKS
761 This enables support for the Embedded Trace Buffer version 1.0 driver
762 that complies with the generic implementation of the component without
763 special enhancement or added features.
765 config CORESIGHT_SOURCE_ETM3X
766 bool "CoreSight Embedded Trace Macrocell 3.x driver"
767 select CORESIGHT_LINKS_AND_SINKS
769 This driver provides support for processor ETM3.x and PTM1.x modules,
770 which allows tracing the instructions that a processor is executing
771 This is primarily useful for instruction level tracing. Depending
772 the ETM version data tracing may also be available.