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
66 # These options are only for real kernel hackers who want to get their hands dirty.
68 bool "Kernel low-level debugging functions (read help!)"
69 depends on DEBUG_KERNEL
71 Say Y here to include definitions of printascii, printch, printhex
72 in the kernel. This is helpful if you are debugging code that
73 executes before the console is initialized.
75 Note that selecting this option will limit the kernel to a single
76 UART definition, as specified below. Attempting to boot the kernel
77 image on a different platform *will not work*, so this option should
78 not be enabled for kernels that are intended to be portable.
81 prompt "Kernel low-level debugging port"
84 config AT91_DEBUG_LL_DBGU0
85 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
86 depends on HAVE_AT91_DBGU0
88 config AT91_DEBUG_LL_DBGU1
89 bool "Kernel low-level debugging on 9263 and 9g45"
90 depends on HAVE_AT91_DBGU1
93 bool "Kernel low-level debugging on BCM2835 PL011 UART"
94 depends on ARCH_BCM2835
96 config DEBUG_CLPS711X_UART1
97 bool "Kernel low-level debugging messages via UART1"
98 depends on ARCH_CLPS711X
100 Say Y here if you want the debug print routines to direct
101 their output to the first serial port on these devices.
103 config DEBUG_CLPS711X_UART2
104 bool "Kernel low-level debugging messages via UART2"
105 depends on ARCH_CLPS711X
107 Say Y here if you want the debug print routines to direct
108 their output to the second serial port on these devices.
111 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
112 depends on ARCH_CNS3XXX
114 Say Y here if you want the debug print routines to direct
115 their output to the CNS3xxx UART0.
117 config DEBUG_DAVINCI_DA8XX_UART1
118 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
119 depends on ARCH_DAVINCI_DA8XX
121 Say Y here if you want the debug print routines to direct
122 their output to UART1 serial port on DaVinci DA8XX devices.
124 config DEBUG_DAVINCI_DA8XX_UART2
125 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
126 depends on ARCH_DAVINCI_DA8XX
128 Say Y here if you want the debug print routines to direct
129 their output to UART2 serial port on DaVinci DA8XX devices.
131 config DEBUG_DAVINCI_DMx_UART0
132 bool "Kernel low-level debugging on DaVinci DMx using UART0"
133 depends on ARCH_DAVINCI_DMx
135 Say Y here if you want the debug print routines to direct
136 their output to UART0 serial port on DaVinci DMx devices.
138 config DEBUG_DAVINCI_TNETV107X_UART1
139 bool "Kernel low-level debugging on DaVinci TNETV107x using UART1"
140 depends on ARCH_DAVINCI_TNETV107X
142 Say Y here if you want the debug print routines to direct
143 their output to UART1 serial port on DaVinci TNETV107X
146 config DEBUG_ZYNQ_UART0
147 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
150 Say Y here if you want the debug print routines to direct
151 their output to UART0 on the Zynq platform.
153 config DEBUG_ZYNQ_UART1
154 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
157 Say Y here if you want the debug print routines to direct
158 their output to UART1 on the Zynq platform.
160 If you have a ZC702 board and want early boot messages to
161 appear on the USB serial adaptor, select this option.
163 config DEBUG_DC21285_PORT
164 bool "Kernel low-level debugging messages via footbridge serial port"
165 depends on FOOTBRIDGE
167 Say Y here if you want the debug print routines to direct
168 their output to the serial port in the DC21285 (Footbridge).
170 config DEBUG_FOOTBRIDGE_COM1
171 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
172 depends on FOOTBRIDGE
174 Say Y here if you want the debug print routines to direct
175 their output to the 8250 at PCI COM1.
177 config DEBUG_HIGHBANK_UART
178 bool "Kernel low-level debugging messages via Highbank UART"
179 depends on ARCH_HIGHBANK
181 Say Y here if you want the debug print routines to direct
182 their output to the UART on Highbank based devices.
184 config DEBUG_IMX1_UART
185 bool "i.MX1 Debug UART"
188 Say Y here if you want kernel low-level debugging support
191 config DEBUG_IMX23_UART
192 bool "i.MX23 Debug UART"
195 Say Y here if you want kernel low-level debugging support
198 config DEBUG_IMX25_UART
199 bool "i.MX25 Debug UART"
202 Say Y here if you want kernel low-level debugging support
205 config DEBUG_IMX21_IMX27_UART
206 bool "i.MX21 and i.MX27 Debug UART"
207 depends on SOC_IMX21 || SOC_IMX27
209 Say Y here if you want kernel low-level debugging support
212 config DEBUG_IMX28_UART
213 bool "i.MX28 Debug UART"
216 Say Y here if you want kernel low-level debugging support
219 config DEBUG_IMX31_UART
220 bool "i.MX31 Debug UART"
223 Say Y here if you want kernel low-level debugging support
226 config DEBUG_IMX35_UART
227 bool "i.MX35 Debug UART"
230 Say Y here if you want kernel low-level debugging support
233 config DEBUG_IMX51_UART
234 bool "i.MX51 Debug UART"
237 Say Y here if you want kernel low-level debugging support
240 config DEBUG_IMX53_UART
241 bool "i.MX53 Debug UART"
244 Say Y here if you want kernel low-level debugging support
247 config DEBUG_IMX6Q_UART
248 bool "i.MX6Q/DL Debug UART"
251 Say Y here if you want kernel low-level debugging support
254 config DEBUG_IMX6SL_UART
255 bool "i.MX6SL Debug UART"
256 depends on SOC_IMX6SL
258 Say Y here if you want kernel low-level debugging support
261 config DEBUG_KEYSTONE_UART0
262 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
263 depends on ARCH_KEYSTONE
265 Say Y here if you want the debug print routines to direct
266 their output to UART0 serial port on KEYSTONE2 devices.
268 config DEBUG_KEYSTONE_UART1
269 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
270 depends on ARCH_KEYSTONE
272 Say Y here if you want the debug print routines to direct
273 their output to UART1 serial port on KEYSTONE2 devices.
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 (old bootloaders)"
328 depends on ARCH_MVEBU
330 Say Y here if you want kernel low-level debugging support
331 on MVEBU based platforms.
333 This option should be used with the old bootloaders
334 that left the internal registers mapped at
335 0xd0000000. As of today, this is the case on
336 platforms such as the Globalscale Mirabox or the
337 Plathome OpenBlocks AX3, when using the original
340 If the wrong DEBUG_MVEBU_UART* option is selected,
341 when u-boot hands over to the kernel, the system
342 silently crashes, with no serial output at all.
344 config DEBUG_MVEBU_UART_ALTERNATE
345 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
346 depends on ARCH_MVEBU
348 Say Y here if you want kernel low-level debugging support
349 on MVEBU based platforms.
351 This option should be used with the new bootloaders
352 that remap the internal registers at 0xf1000000.
354 If the wrong DEBUG_MVEBU_UART* option is selected,
355 when u-boot hands over to the kernel, the system
356 silently crashes, with no serial output at all.
358 config DEBUG_NOMADIK_UART
359 bool "Kernel low-level debugging messages via NOMADIK UART"
360 depends on ARCH_NOMADIK
362 Say Y here if you want kernel low-level debugging support
363 on NOMADIK based platforms.
365 config DEBUG_OMAP2PLUS_UART
366 bool "Kernel low-level debugging messages via OMAP2PLUS UART"
367 depends on ARCH_OMAP2PLUS
369 Say Y here if you want kernel low-level debugging support
370 on OMAP2PLUS based platforms.
372 config DEBUG_PICOXCELL_UART
373 depends on ARCH_PICOXCELL
374 bool "Use PicoXcell UART for low-level debug"
376 Say Y here if you want kernel low-level debugging support
377 on PicoXcell based platforms.
379 config DEBUG_PXA_UART1
381 bool "Use PXA UART1 for low-level debug"
383 Say Y here if you want kernel low-level debugging support
386 config DEBUG_REALVIEW_STD_PORT
387 bool "RealView Default UART"
388 depends on ARCH_REALVIEW
390 Say Y here if you want the debug print routines to direct
391 their output to the serial port on RealView EB, PB11MP, PBA8
394 config DEBUG_REALVIEW_PB1176_PORT
395 bool "RealView PB1176 UART"
396 depends on MACH_REALVIEW_PB1176
398 Say Y here if you want the debug print routines to direct
399 their output to the standard serial port on the RealView
402 config DEBUG_ROCKCHIP_UART
403 bool "Kernel low-level debugging messages via Rockchip UART"
404 depends on ARCH_ROCKCHIP
406 Say Y here if you want kernel low-level debugging support
407 on Rockchip based platforms.
409 config DEBUG_S3C_UART0
410 depends on PLAT_SAMSUNG
411 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
412 bool "Use S3C UART 0 for low-level debug"
414 Say Y here if you want the debug print routines to direct
415 their output to UART 0. The port must have been initialised
416 by the boot-loader before use.
418 The uncompressor code port configuration is now handled
419 by CONFIG_S3C_LOWLEVEL_UART_PORT.
421 config DEBUG_S3C_UART1
422 depends on PLAT_SAMSUNG
423 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
424 bool "Use S3C UART 1 for low-level debug"
426 Say Y here if you want the debug print routines to direct
427 their output to UART 1. The port must have been initialised
428 by the boot-loader before use.
430 The uncompressor code port configuration is now handled
431 by CONFIG_S3C_LOWLEVEL_UART_PORT.
433 config DEBUG_S3C_UART2
434 depends on PLAT_SAMSUNG
435 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
436 bool "Use S3C UART 2 for low-level debug"
438 Say Y here if you want the debug print routines to direct
439 their output to UART 2. The port must have been initialised
440 by the boot-loader before use.
442 The uncompressor code port configuration is now handled
443 by CONFIG_S3C_LOWLEVEL_UART_PORT.
445 config DEBUG_S3C_UART3
446 depends on PLAT_SAMSUNG && ARCH_EXYNOS
447 select DEBUG_EXYNOS_UART
448 bool "Use S3C UART 3 for low-level debug"
450 Say Y here if you want the debug print routines to direct
451 their output to UART 3. The port must have been initialised
452 by the boot-loader before use.
454 The uncompressor code port configuration is now handled
455 by CONFIG_S3C_LOWLEVEL_UART_PORT.
457 config DEBUG_SOCFPGA_UART
458 depends on ARCH_SOCFPGA
459 bool "Use SOCFPGA UART for low-level debug"
461 Say Y here if you want kernel low-level debugging support
462 on SOCFPGA based platforms.
464 config DEBUG_SUNXI_UART0
465 bool "Kernel low-level debugging messages via sunXi UART0"
466 depends on ARCH_SUNXI
468 Say Y here if you want kernel low-level debugging support
469 on Allwinner A1X based platforms on the UART0.
471 config DEBUG_SUNXI_UART1
472 bool "Kernel low-level debugging messages via sunXi UART1"
473 depends on ARCH_SUNXI
475 Say Y here if you want kernel low-level debugging support
476 on Allwinner A1X based platforms on the UART1.
478 config DEBUG_TEGRA_UART
479 depends on ARCH_TEGRA
480 bool "Use Tegra UART for low-level debug"
482 Say Y here if you want kernel low-level debugging support
483 on Tegra based platforms.
485 config DEBUG_SIRFPRIMA2_UART1
486 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
487 depends on ARCH_PRIMA2
489 Say Y here if you want the debug print routines to direct
490 their output to the uart1 port on SiRFprimaII devices.
492 config DEBUG_SIRFMARCO_UART1
493 bool "Kernel low-level debugging messages via SiRFmarco UART1"
494 depends on ARCH_MARCO
496 Say Y here if you want the debug print routines to direct
497 their output to the uart1 port on SiRFmarco devices.
499 config DEBUG_U300_UART
500 bool "Kernel low-level debugging messages via U300 UART0"
503 Say Y here if you want the debug print routines to direct
504 their output to the uart port on U300 devices.
506 config DEBUG_UX500_UART
507 depends on ARCH_U8500
508 bool "Use Ux500 UART for low-level debug"
510 Say Y here if you want kernel low-level debugging support
511 on Ux500 based platforms.
513 config DEBUG_VEXPRESS_UART0_DETECT
514 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
515 depends on ARCH_VEXPRESS && CPU_CP15_MMU
517 This option enables a simple heuristic which tries to determine
518 the motherboard's memory map variant (original or RS1) and then
519 choose the relevant UART0 base address.
521 Note that this will only work with standard A-class core tiles,
522 and may fail with non-standard SMM or custom software models.
524 config DEBUG_VEXPRESS_UART0_CA9
525 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
526 depends on ARCH_VEXPRESS
528 This option selects UART0 at 0x10009000. Except for custom models,
529 this applies only to the V2P-CA9 tile.
531 config DEBUG_VEXPRESS_UART0_RS1
532 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
533 depends on ARCH_VEXPRESS
535 This option selects UART0 at 0x1c090000. This applies to most
536 of the tiles using the RS1 memory map, including all new A-class
537 core tiles, FPGA-based SMMs and software models.
539 config DEBUG_VT8500_UART0
540 bool "Use UART0 on VIA/Wondermedia SoCs"
541 depends on ARCH_VT8500
543 This option selects UART0 on VIA/Wondermedia System-on-a-chip
544 devices, including VT8500, WM8505, WM8650 and WM8850.
546 config DEBUG_LL_UART_NONE
547 bool "No low-level debugging UART"
548 depends on !ARCH_MULTIPLATFORM
550 Say Y here if your platform doesn't provide a UART option
551 below. This relies on your platform choosing the right UART
552 definition internally in order for low-level debugging to
556 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
558 Say Y here if you want the debug print routines to direct
559 their output to the EmbeddedICE macrocell's DCC channel using
560 co-processor 14. This is known to work on the ARM9 style ICE
561 channel and on the XScale with the PEEDI.
563 Note that the system will appear to hang during boot if there
564 is nothing connected to read from the DCC.
566 config DEBUG_SEMIHOSTING
567 bool "Kernel low-level debug output via semihosting I/O"
569 Semihosting enables code running on an ARM target to use
570 the I/O facilities on a host debugger/emulator through a
571 simple SVC call. The host debugger or emulator must have
572 semihosting enabled for the special svc call to be trapped
573 otherwise the kernel will crash.
575 This is known to work with OpenOCD, as well as
576 ARM's Fast Models, or any other controlling environment
577 that implements semihosting.
579 For more details about semihosting, please see
580 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
584 config DEBUG_EXYNOS_UART
587 config DEBUG_IMX_UART_PORT
588 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
589 DEBUG_IMX25_UART || \
590 DEBUG_IMX21_IMX27_UART || \
591 DEBUG_IMX31_UART || \
592 DEBUG_IMX35_UART || \
593 DEBUG_IMX51_UART || \
594 DEBUG_IMX53_UART || \
595 DEBUG_IMX6Q_UART || \
600 Choose UART port on which kernel low-level debug messages
604 prompt "Low-level debug console UART"
605 depends on DEBUG_OMAP2PLUS_UART
607 config DEBUG_OMAP2UART1
608 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
610 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
611 omap3 torpedo and 3530 lv som.
613 config DEBUG_OMAP2UART2
614 bool "OMAP2/3/4 UART2"
616 config DEBUG_OMAP2UART3
617 bool "OMAP2 UART3 (n8x0)"
619 config DEBUG_OMAP3UART3
620 bool "OMAP3 UART3 (most omap3 boards)"
622 This covers at least cm_t3x, beagle, crane, devkit8000,
623 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
626 config DEBUG_OMAP4UART3
627 bool "OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
629 config DEBUG_OMAP3UART4
630 bool "OMAP36XX UART4"
632 config DEBUG_OMAP4UART4
635 config DEBUG_TI81XXUART1
636 bool "TI81XX UART1 (ti8148evm)"
638 config DEBUG_TI81XXUART2
641 config DEBUG_TI81XXUART3
642 bool "TI81XX UART3 (ti8168evm)"
644 config DEBUG_AM33XXUART1
647 config DEBUG_ZOOM_UART
652 prompt "Low-level debug console UART"
653 depends on DEBUG_ROCKCHIP_UART
655 config DEBUG_RK29_UART0
658 config DEBUG_RK29_UART1
661 config DEBUG_RK29_UART2
664 config DEBUG_RK3X_UART0
667 config DEBUG_RK3X_UART1
670 config DEBUG_RK3X_UART2
673 config DEBUG_RK3X_UART3
678 prompt "Low-level debug console UART"
679 depends on DEBUG_LL && DEBUG_TEGRA_UART
681 config TEGRA_DEBUG_UART_AUTO_ODMDATA
684 Automatically determines which UART to use for low-level debug based
685 on the ODMDATA value. This value is part of the BCT, and is written
686 to the boot memory device using nvflash, or other flashing tool.
687 When bits 19:18 are 3, then bits 17:15 indicate which UART to use;
688 0/1/2/3/4 are UART A/B/C/D/E.
690 config TEGRA_DEBUG_UARTA
693 config TEGRA_DEBUG_UARTB
696 config TEGRA_DEBUG_UARTC
699 config TEGRA_DEBUG_UARTD
702 config TEGRA_DEBUG_UARTE
707 config DEBUG_LL_INCLUDE
709 default "debug/bcm2835.S" if DEBUG_BCM2835
710 default "debug/cns3xxx.S" if DEBUG_CNS3XXX
711 default "debug/exynos.S" if DEBUG_EXYNOS_UART
712 default "debug/highbank.S" if DEBUG_HIGHBANK_UART
713 default "debug/icedcc.S" if DEBUG_ICEDCC
714 default "debug/imx.S" if DEBUG_IMX1_UART || \
715 DEBUG_IMX25_UART || \
716 DEBUG_IMX21_IMX27_UART || \
717 DEBUG_IMX31_UART || \
718 DEBUG_IMX35_UART || \
719 DEBUG_IMX51_UART || \
721 DEBUG_IMX6Q_UART || \
723 default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \
725 default "debug/mvebu.S" if DEBUG_MVEBU_UART || \
726 DEBUG_MVEBU_UART_ALTERNATE
727 default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
728 default "debug/nomadik.S" if DEBUG_NOMADIK_UART
729 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
730 default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART
731 default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \
733 default "debug/rockchip.S" if DEBUG_ROCKCHIP_UART
734 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
735 default "debug/socfpga.S" if DEBUG_SOCFPGA_UART
736 default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1
737 default "debug/tegra.S" if DEBUG_TEGRA_UART
738 default "debug/u300.S" if DEBUG_U300_UART
739 default "debug/ux500.S" if DEBUG_UX500_UART
740 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \
741 DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1
742 default "debug/vt8500.S" if DEBUG_VT8500_UART0
743 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
744 default "mach/debug-macro.S"
746 config DEBUG_UNCOMPRESS
748 default y if ARCH_MULTIPLATFORM && DEBUG_LL && \
749 !DEBUG_OMAP2PLUS_UART && \
752 config UNCOMPRESS_INCLUDE
754 default "debug/uncompress.h" if ARCH_MULTIPLATFORM
755 default "mach/uncompress.h"
761 Say Y here if you want to have an early console using the
762 kernel low-level debugging functions. Add earlyprintk to your
763 kernel parameters to enable this console.
766 bool "On-chip ETM and ETB"
769 Enables the on-chip embedded trace macrocell and embedded trace
770 buffer driver that will allow you to collect traces of the
773 config ARM_KPROBES_TEST
774 tristate "Kprobes test module"
775 depends on KPROBES && MODULES
777 Perform tests of kprobes API and instruction set simulation.
779 config PID_IN_CONTEXTIDR
780 bool "Write the current PID to the CONTEXTIDR register"
781 depends on CPU_COPY_V6
783 Enabling this option causes the kernel to write the current PID to
784 the PROCID field of the CONTEXTIDR register, at the expense of some
785 additional instructions during context switch. Say Y here only if you
786 are planning to use hardware trace tools with this kernel.