3 source "lib/Kconfig.debug"
6 bool "Export kernel pagetable layout to userspace via debugfs"
7 depends on DEBUG_KERNEL
10 Say Y here if you want to show the kernel pagetable layout in a
11 debugfs file. This information is only useful for kernel developers
12 who are working in architecture specific areas of the kernel.
13 It is probably not a good idea to enable this feature in a production
18 bool "Filter access to /dev/mem"
21 If this option is disabled, you allow userspace (root) access to all
22 of memory, including kernel and userspace memory. Accidental
23 access to this is obviously disastrous, but specific access can
24 be used by people debugging the kernel.
26 If this option is switched on, the /dev/mem file only allows
27 userspace access to memory mapped peripherals.
31 # RMK wants arm kernels compiled with frame pointers or stack unwinding.
32 # If you know what you are doing and are willing to live without stack
33 # traces, you can get a slightly smaller kernel by setting this option to
34 # n, but then RMK will have to kill you ;).
37 depends on !THUMB2_KERNEL
38 default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
40 If you say N here, the resulting kernel will be slightly smaller and
41 faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
42 when a problem occurs with the kernel, the information that is
43 reported is severely limited.
46 bool "Enable stack unwinding support (EXPERIMENTAL)"
50 This option enables stack unwinding support in the kernel
51 using the information automatically generated by the
52 compiler. The resulting kernel image is slightly bigger but
53 the performance is not affected. Currently, this feature
54 only works with EABI compilers. If unsure say Y.
58 depends on FUNCTION_TRACER && FRAME_POINTER
62 bool "Verbose user fault messages"
64 When a user program crashes due to an exception, the kernel can
65 print a brief message explaining what the problem was. This is
66 sometimes helpful for debugging but serves no purpose on a
67 production system. Most people should say N here.
69 In addition, you need to pass user_debug=N on the kernel command
70 line to enable this feature. N consists of the sum of:
72 1 - undefined instruction events
74 4 - invalid data aborts
78 # These options are only for real kernel hackers who want to get their hands dirty.
80 bool "Kernel low-level debugging functions (read help!)"
81 depends on DEBUG_KERNEL
83 Say Y here to include definitions of printascii, printch, printhex
84 in the kernel. This is helpful if you are debugging code that
85 executes before the console is initialized.
87 Note that selecting this option will limit the kernel to a single
88 UART definition, as specified below. Attempting to boot the kernel
89 image on a different platform *will not work*, so this option should
90 not be enabled for kernels that are intended to be portable.
93 prompt "Kernel low-level debugging port"
96 config AT91_DEBUG_LL_DBGU0
97 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
98 depends on HAVE_AT91_DBGU0
100 config AT91_DEBUG_LL_DBGU1
101 bool "Kernel low-level debugging on 9263 and 9g45"
102 depends on HAVE_AT91_DBGU1
105 bool "Kernel low-level debugging on BCM2835 PL011 UART"
106 depends on ARCH_BCM2835
107 select DEBUG_UART_PL01X
109 config DEBUG_BCM_5301X
110 bool "Kernel low-level debugging on BCM5301X UART1"
111 depends on ARCH_BCM_5301X
112 select DEBUG_UART_PL01X
114 config DEBUG_BCM_KONA_UART
115 bool "Kernel low-level debugging messages via BCM KONA UART"
116 depends on ARCH_BCM_MOBILE
117 select DEBUG_UART_8250
119 Say Y here if you want kernel low-level debugging support
120 on Broadcom SoC platforms.
121 This low level debug works for Broadcom
122 mobile SoCs in the Kona family of chips (e.g. bcm28155,
125 config DEBUG_BERLIN_UART
126 bool "Marvell Berlin SoC Debug UART"
127 depends on ARCH_BERLIN
128 select DEBUG_UART_8250
130 Say Y here if you want kernel low-level debugging support
131 on Marvell Berlin SoC based platforms.
133 config DEBUG_CLPS711X_UART1
134 bool "Kernel low-level debugging messages via UART1"
135 depends on ARCH_CLPS711X
137 Say Y here if you want the debug print routines to direct
138 their output to the first serial port on these devices.
140 config DEBUG_CLPS711X_UART2
141 bool "Kernel low-level debugging messages via UART2"
142 depends on ARCH_CLPS711X
144 Say Y here if you want the debug print routines to direct
145 their output to the second serial port on these devices.
148 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
149 depends on ARCH_CNS3XXX
150 select DEBUG_UART_PL01X
152 Say Y here if you want the debug print routines to direct
153 their output to the CNS3xxx UART0.
155 config DEBUG_DAVINCI_DA8XX_UART1
156 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
157 depends on ARCH_DAVINCI_DA8XX
158 select DEBUG_UART_8250
160 Say Y here if you want the debug print routines to direct
161 their output to UART1 serial port on DaVinci DA8XX devices.
163 config DEBUG_DAVINCI_DA8XX_UART2
164 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
165 depends on ARCH_DAVINCI_DA8XX
166 select DEBUG_UART_8250
168 Say Y here if you want the debug print routines to direct
169 their output to UART2 serial port on DaVinci DA8XX devices.
171 config DEBUG_DAVINCI_DMx_UART0
172 bool "Kernel low-level debugging on DaVinci DMx using UART0"
173 depends on ARCH_DAVINCI_DMx
174 select DEBUG_UART_8250
176 Say Y here if you want the debug print routines to direct
177 their output to UART0 serial port on DaVinci DMx devices.
179 config DEBUG_ZYNQ_UART0
180 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
183 Say Y here if you want the debug print routines to direct
184 their output to UART0 on the Zynq platform.
186 config DEBUG_ZYNQ_UART1
187 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
190 Say Y here if you want the debug print routines to direct
191 their output to UART1 on the Zynq platform.
193 If you have a ZC702 board and want early boot messages to
194 appear on the USB serial adaptor, select this option.
196 config DEBUG_DC21285_PORT
197 bool "Kernel low-level debugging messages via footbridge serial port"
198 depends on FOOTBRIDGE
200 Say Y here if you want the debug print routines to direct
201 their output to the serial port in the DC21285 (Footbridge).
203 config DEBUG_FOOTBRIDGE_COM1
204 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
205 depends on FOOTBRIDGE
207 Say Y here if you want the debug print routines to direct
208 their output to the 8250 at PCI COM1.
210 config DEBUG_HI3620_UART
211 bool "Hisilicon HI3620 Debug UART"
212 depends on ARCH_HI3xxx
213 select DEBUG_UART_PL01X
215 Say Y here if you want kernel low-level debugging support
218 config DEBUG_HI3716_UART
219 bool "Hisilicon Hi3716 Debug UART"
220 depends on ARCH_HI3xxx
221 select DEBUG_UART_PL01X
223 Say Y here if you want kernel low-level debugging support
226 config DEBUG_HIX5HD2_UART
227 bool "Hisilicon Hix5hd2 Debug UART"
228 depends on ARCH_HIX5HD2
229 select DEBUG_UART_PL01X
231 Say Y here if you want kernel low-level debugging support
234 config DEBUG_HIGHBANK_UART
235 bool "Kernel low-level debugging messages via Highbank UART"
236 depends on ARCH_HIGHBANK
237 select DEBUG_UART_PL01X
239 Say Y here if you want the debug print routines to direct
240 their output to the UART on Highbank based devices.
242 config DEBUG_IMX1_UART
243 bool "i.MX1 Debug UART"
246 Say Y here if you want kernel low-level debugging support
249 config DEBUG_IMX23_UART
250 bool "i.MX23 Debug UART"
252 select DEBUG_UART_PL01X
254 Say Y here if you want kernel low-level debugging support
257 config DEBUG_IMX25_UART
258 bool "i.MX25 Debug UART"
261 Say Y here if you want kernel low-level debugging support
264 config DEBUG_IMX21_IMX27_UART
265 bool "i.MX21 and i.MX27 Debug UART"
266 depends on SOC_IMX21 || SOC_IMX27
268 Say Y here if you want kernel low-level debugging support
271 config DEBUG_IMX28_UART
272 bool "i.MX28 Debug UART"
274 select DEBUG_UART_PL01X
276 Say Y here if you want kernel low-level debugging support
279 config DEBUG_IMX31_UART
280 bool "i.MX31 Debug UART"
283 Say Y here if you want kernel low-level debugging support
286 config DEBUG_IMX35_UART
287 bool "i.MX35 Debug UART"
290 Say Y here if you want kernel low-level debugging support
293 config DEBUG_IMX50_UART
294 bool "i.MX50 Debug UART"
297 Say Y here if you want kernel low-level debugging support
300 config DEBUG_IMX51_UART
301 bool "i.MX51 Debug UART"
304 Say Y here if you want kernel low-level debugging support
307 config DEBUG_IMX53_UART
308 bool "i.MX53 Debug UART"
311 Say Y here if you want kernel low-level debugging support
314 config DEBUG_IMX6Q_UART
315 bool "i.MX6Q/DL Debug UART"
318 Say Y here if you want kernel low-level debugging support
321 config DEBUG_IMX6SL_UART
322 bool "i.MX6SL Debug UART"
323 depends on SOC_IMX6SL
325 Say Y here if you want kernel low-level debugging support
328 config DEBUG_IMX6SX_UART
329 bool "i.MX6SX Debug UART"
330 depends on SOC_IMX6SX
332 Say Y here if you want kernel low-level debugging support
335 config DEBUG_KEYSTONE_UART0
336 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
337 depends on ARCH_KEYSTONE
338 select DEBUG_UART_8250
340 Say Y here if you want the debug print routines to direct
341 their output to UART0 serial port on KEYSTONE2 devices.
343 config DEBUG_KEYSTONE_UART1
344 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
345 depends on ARCH_KEYSTONE
346 select DEBUG_UART_8250
348 Say Y here if you want the debug print routines to direct
349 their output to UART1 serial port on KEYSTONE2 devices.
351 config DEBUG_MMP_UART2
352 bool "Kernel low-level debugging message via MMP UART2"
354 select DEBUG_UART_8250
356 Say Y here if you want kernel low-level debugging support
359 config DEBUG_MMP_UART3
360 bool "Kernel low-level debugging message via MMP UART3"
362 select DEBUG_UART_8250
364 Say Y here if you want kernel low-level debugging support
367 config DEBUG_MSM_UART
368 bool "Kernel low-level debugging messages via MSM UART"
371 Say Y here if you want the debug print routines to direct
372 their output to the serial port on MSM devices.
374 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE #
375 MSM7X00A, QSD8X50 0xa9a00000 0xe1000000 UART1
376 MSM7X00A, QSD8X50 0xa9b00000 0xe1000000 UART2
377 MSM7X00A, QSD8X50 0xa9c00000 0xe1000000 UART3
379 MSM7X30 0xaca00000 0xe1000000 UART1
380 MSM7X30 0xacb00000 0xe1000000 UART2
381 MSM7X30 0xacc00000 0xe1000000 UART3
383 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
384 options based on your needs.
386 config DEBUG_QCOM_UARTDM
387 bool "Kernel low-level debugging messages via QCOM UARTDM"
390 Say Y here if you want the debug print routines to direct
391 their output to the serial port on Qualcomm devices.
393 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE
394 APQ8084 0xf995e000 0xfa75e000
395 MSM8X60 0x19c40000 0xf0040000
396 MSM8960 0x16440000 0xf0040000
397 MSM8974 0xf991e000 0xfa71e000
399 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
400 options based on your needs.
402 config DEBUG_MVEBU_UART
403 bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
404 depends on ARCH_MVEBU
405 select DEBUG_UART_8250
407 Say Y here if you want kernel low-level debugging support
408 on MVEBU based platforms.
410 This option should be used with the old bootloaders
411 that left the internal registers mapped at
412 0xd0000000. As of today, this is the case on
413 platforms such as the Globalscale Mirabox or the
414 Plathome OpenBlocks AX3, when using the original
417 If the wrong DEBUG_MVEBU_UART* option is selected,
418 when u-boot hands over to the kernel, the system
419 silently crashes, with no serial output at all.
421 config DEBUG_MVEBU_UART_ALTERNATE
422 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
423 depends on ARCH_MVEBU
424 select DEBUG_UART_8250
426 Say Y here if you want kernel low-level debugging support
427 on MVEBU based platforms.
429 This option should be used with the new bootloaders
430 that remap the internal registers at 0xf1000000.
432 If the wrong DEBUG_MVEBU_UART* option is selected,
433 when u-boot hands over to the kernel, the system
434 silently crashes, with no serial output at all.
440 Say Y here if you want kernel low-level debugging support
441 on Vybrid based platforms.
443 config DEBUG_NOMADIK_UART
444 bool "Kernel low-level debugging messages via NOMADIK UART"
445 depends on ARCH_NOMADIK
446 select DEBUG_UART_PL01X
448 Say Y here if you want kernel low-level debugging support
449 on NOMADIK based platforms.
451 config DEBUG_NSPIRE_CLASSIC_UART
452 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
453 depends on ARCH_NSPIRE
454 select DEBUG_UART_8250
456 Say Y here if you want kernel low-level debugging support
457 on TI-NSPIRE classic models.
459 config DEBUG_NSPIRE_CX_UART
460 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
461 depends on ARCH_NSPIRE
462 select DEBUG_UART_PL01X
464 Say Y here if you want kernel low-level debugging support
465 on TI-NSPIRE CX models.
467 config DEBUG_OMAP2UART1
468 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
469 depends on ARCH_OMAP2PLUS
470 select DEBUG_OMAP2PLUS_UART
472 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
473 omap3 torpedo and 3530 lv som.
475 config DEBUG_OMAP2UART2
476 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
477 depends on ARCH_OMAP2PLUS
478 select DEBUG_OMAP2PLUS_UART
480 config DEBUG_OMAP2UART3
481 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
482 depends on ARCH_OMAP2PLUS
483 select DEBUG_OMAP2PLUS_UART
485 config DEBUG_OMAP3UART3
486 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
487 depends on ARCH_OMAP2PLUS
488 select DEBUG_OMAP2PLUS_UART
490 This covers at least cm_t3x, beagle, crane, devkit8000,
491 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
494 config DEBUG_OMAP4UART3
495 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
496 depends on ARCH_OMAP2PLUS
497 select DEBUG_OMAP2PLUS_UART
499 config DEBUG_OMAP3UART4
500 bool "Kernel low-level debugging messages via OMAP36XX UART4"
501 depends on ARCH_OMAP2PLUS
502 select DEBUG_OMAP2PLUS_UART
504 config DEBUG_OMAP4UART4
505 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
506 depends on ARCH_OMAP2PLUS
507 select DEBUG_OMAP2PLUS_UART
509 config DEBUG_TI81XXUART1
510 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
511 depends on ARCH_OMAP2PLUS
512 select DEBUG_OMAP2PLUS_UART
514 config DEBUG_TI81XXUART2
515 bool "Kernel low-level debugging messages via TI81XX UART2"
516 depends on ARCH_OMAP2PLUS
517 select DEBUG_OMAP2PLUS_UART
519 config DEBUG_TI81XXUART3
520 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
521 depends on ARCH_OMAP2PLUS
522 select DEBUG_OMAP2PLUS_UART
524 config DEBUG_AM33XXUART1
525 bool "Kernel low-level debugging messages via AM33XX UART1"
526 depends on ARCH_OMAP2PLUS
527 select DEBUG_OMAP2PLUS_UART
529 config DEBUG_ZOOM_UART
530 bool "Kernel low-level debugging messages via Zoom2/3 UART"
531 depends on ARCH_OMAP2PLUS
532 select DEBUG_OMAP2PLUS_UART
534 config DEBUG_PICOXCELL_UART
535 depends on ARCH_PICOXCELL
536 bool "Use PicoXcell UART for low-level debug"
537 select DEBUG_UART_8250
539 Say Y here if you want kernel low-level debugging support
540 on PicoXcell based platforms.
542 config DEBUG_PXA_UART1
544 bool "Use PXA UART1 for low-level debug"
545 select DEBUG_UART_8250
547 Say Y here if you want kernel low-level debugging support
550 config DEBUG_REALVIEW_STD_PORT
551 bool "RealView Default UART"
552 depends on ARCH_REALVIEW
553 select DEBUG_UART_PL01X
555 Say Y here if you want the debug print routines to direct
556 their output to the serial port on RealView EB, PB11MP, PBA8
559 config DEBUG_REALVIEW_PB1176_PORT
560 bool "RealView PB1176 UART"
561 depends on MACH_REALVIEW_PB1176
562 select DEBUG_UART_PL01X
564 Say Y here if you want the debug print routines to direct
565 their output to the standard serial port on the RealView
568 config DEBUG_RK29_UART0
569 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
570 depends on ARCH_ROCKCHIP
571 select DEBUG_UART_8250
573 Say Y here if you want kernel low-level debugging support
574 on Rockchip based platforms.
576 config DEBUG_RK29_UART1
577 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
578 depends on ARCH_ROCKCHIP
579 select DEBUG_UART_8250
581 Say Y here if you want kernel low-level debugging support
582 on Rockchip based platforms.
584 config DEBUG_RK29_UART2
585 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
586 depends on ARCH_ROCKCHIP
587 select DEBUG_UART_8250
589 Say Y here if you want kernel low-level debugging support
590 on Rockchip based platforms.
592 config DEBUG_RK3X_UART0
593 bool "Kernel low-level debugging messages via Rockchip RK3X UART0"
594 depends on ARCH_ROCKCHIP
595 select DEBUG_UART_8250
597 Say Y here if you want kernel low-level debugging support
598 on Rockchip based platforms.
600 config DEBUG_RK3X_UART1
601 bool "Kernel low-level debugging messages via Rockchip RK3X UART1"
602 depends on ARCH_ROCKCHIP
603 select DEBUG_UART_8250
605 Say Y here if you want kernel low-level debugging support
606 on Rockchip based platforms.
608 config DEBUG_RK3X_UART2
609 bool "Kernel low-level debugging messages via Rockchip RK3X UART2"
610 depends on ARCH_ROCKCHIP
611 select DEBUG_UART_8250
613 Say Y here if you want kernel low-level debugging support
614 on Rockchip based platforms.
616 config DEBUG_RK3X_UART3
617 bool "Kernel low-level debugging messages via Rockchip RK3X UART3"
618 depends on ARCH_ROCKCHIP
619 select DEBUG_UART_8250
621 Say Y here if you want kernel low-level debugging support
622 on Rockchip based platforms.
624 config DEBUG_S3C_UART0
625 depends on PLAT_SAMSUNG
626 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
627 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
628 select DEBUG_S5PV210_UART if ARCH_S5PV210
629 bool "Use Samsung S3C UART 0 for low-level debug"
631 Say Y here if you want the debug print routines to direct
632 their output to UART 0. The port must have been initialised
633 by the boot-loader before use.
635 config DEBUG_S3C_UART1
636 depends on PLAT_SAMSUNG
637 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
638 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
639 select DEBUG_S5PV210_UART if ARCH_S5PV210
640 bool "Use Samsung S3C UART 1 for low-level debug"
642 Say Y here if you want the debug print routines to direct
643 their output to UART 1. The port must have been initialised
644 by the boot-loader before use.
646 config DEBUG_S3C_UART2
647 depends on PLAT_SAMSUNG
648 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
649 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
650 select DEBUG_S5PV210_UART if ARCH_S5PV210
651 bool "Use Samsung S3C UART 2 for low-level debug"
653 Say Y here if you want the debug print routines to direct
654 their output to UART 2. The port must have been initialised
655 by the boot-loader before use.
657 config DEBUG_S3C_UART3
658 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
659 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
660 select DEBUG_S5PV210_UART if ARCH_S5PV210
661 bool "Use Samsung S3C UART 3 for low-level debug"
663 Say Y here if you want the debug print routines to direct
664 their output to UART 3. The port must have been initialised
665 by the boot-loader before use.
667 config DEBUG_S3C2410_UART0
668 depends on ARCH_S3C24XX
669 select DEBUG_S3C2410_UART
670 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
672 Say Y here if you want the debug print routines to direct
673 their output to UART 0. The port must have been initialised
674 by the boot-loader before use.
676 config DEBUG_S3C2410_UART1
677 depends on ARCH_S3C24XX
678 select DEBUG_S3C2410_UART
679 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
681 Say Y here if you want the debug print routines to direct
682 their output to UART 1. The port must have been initialised
683 by the boot-loader before use.
685 config DEBUG_S3C2410_UART2
686 depends on ARCH_S3C24XX
687 select DEBUG_S3C2410_UART
688 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
690 Say Y here if you want the debug print routines to direct
691 their output to UART 2. The port must have been initialised
692 by the boot-loader before use.
694 config DEBUG_SOCFPGA_UART
695 depends on ARCH_SOCFPGA
696 bool "Use SOCFPGA UART for low-level debug"
697 select DEBUG_UART_8250
699 Say Y here if you want kernel low-level debugging support
700 on SOCFPGA based platforms.
702 config DEBUG_SUNXI_UART0
703 bool "Kernel low-level debugging messages via sunXi UART0"
704 depends on ARCH_SUNXI
705 select DEBUG_UART_8250
707 Say Y here if you want kernel low-level debugging support
708 on Allwinner A1X based platforms on the UART0.
710 config DEBUG_SUNXI_UART1
711 bool "Kernel low-level debugging messages via sunXi UART1"
712 depends on ARCH_SUNXI
713 select DEBUG_UART_8250
715 Say Y here if you want kernel low-level debugging support
716 on Allwinner A1X based platforms on the UART1.
718 config DEBUG_SUNXI_R_UART
719 bool "Kernel low-level debugging messages via sunXi R_UART"
720 depends on MACH_SUN6I || MACH_SUN8I
721 select DEBUG_UART_8250
723 Say Y here if you want kernel low-level debugging support
724 on Allwinner A31/A23 based platforms on the R_UART.
726 config TEGRA_DEBUG_UART_AUTO_ODMDATA
727 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
728 depends on ARCH_TEGRA
729 select DEBUG_TEGRA_UART
731 Automatically determines which UART to use for low-level
732 debug based on the ODMDATA value. This value is part of
733 the BCT, and is written to the boot memory device using
734 nvflash, or other flashing tool. When bits 19:18 are 3,
735 then bits 17:15 indicate which UART to use; 0/1/2/3/4
738 config TEGRA_DEBUG_UARTA
739 bool "Kernel low-level debugging messages via Tegra UART A"
740 depends on ARCH_TEGRA
741 select DEBUG_TEGRA_UART
743 Say Y here if you want kernel low-level debugging support
744 on Tegra based platforms.
746 config TEGRA_DEBUG_UARTB
747 bool "Kernel low-level debugging messages via Tegra UART B"
748 depends on ARCH_TEGRA
749 select DEBUG_TEGRA_UART
751 Say Y here if you want kernel low-level debugging support
752 on Tegra based platforms.
754 config TEGRA_DEBUG_UARTC
755 bool "Kernel low-level debugging messages via Tegra UART C"
756 depends on ARCH_TEGRA
757 select DEBUG_TEGRA_UART
759 Say Y here if you want kernel low-level debugging support
760 on Tegra based platforms.
762 config TEGRA_DEBUG_UARTD
763 bool "Kernel low-level debugging messages via Tegra UART D"
764 depends on ARCH_TEGRA
765 select DEBUG_TEGRA_UART
767 Say Y here if you want kernel low-level debugging support
768 on Tegra based platforms.
770 config TEGRA_DEBUG_UARTE
771 bool "Kernel low-level debugging messages via Tegra UART E"
772 depends on ARCH_TEGRA
773 select DEBUG_TEGRA_UART
775 Say Y here if you want kernel low-level debugging support
776 on Tegra based platforms.
778 config DEBUG_SIRFPRIMA2_UART1
779 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
780 depends on ARCH_PRIMA2
782 Say Y here if you want the debug print routines to direct
783 their output to the uart1 port on SiRFprimaII devices.
785 config DEBUG_SIRFMARCO_UART1
786 bool "Kernel low-level debugging messages via SiRFmarco UART1"
787 depends on ARCH_MARCO
789 Say Y here if you want the debug print routines to direct
790 their output to the uart1 port on SiRFmarco devices.
792 config STIH41X_DEBUG_ASC2
793 bool "Use StiH415/416 ASC2 UART for low-level debug"
795 select DEBUG_STI_UART
797 Say Y here if you want kernel low-level debugging support
798 on STiH415/416 based platforms like b2000, which has
799 default UART wired up to ASC2.
803 config STIH41X_DEBUG_SBC_ASC1
804 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
806 select DEBUG_STI_UART
808 Say Y here if you want kernel low-level debugging support
809 on STiH415/416 based platforms like b2020. which has
810 default UART wired up to SBC ASC1.
814 config DEBUG_U300_UART
815 bool "Kernel low-level debugging messages via U300 UART0"
817 select DEBUG_UART_PL01X
819 Say Y here if you want the debug print routines to direct
820 their output to the uart port on U300 devices.
822 config DEBUG_UX500_UART
823 depends on ARCH_U8500
824 bool "Use Ux500 UART for low-level debug"
826 Say Y here if you want kernel low-level debugging support
827 on Ux500 based platforms.
829 config DEBUG_VEXPRESS_UART0_DETECT
830 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
831 depends on ARCH_VEXPRESS && CPU_CP15_MMU
833 This option enables a simple heuristic which tries to determine
834 the motherboard's memory map variant (original or RS1) and then
835 choose the relevant UART0 base address.
837 Note that this will only work with standard A-class core tiles,
838 and may fail with non-standard SMM or custom software models.
840 config DEBUG_VEXPRESS_UART0_CA9
841 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
842 depends on ARCH_VEXPRESS
843 select DEBUG_UART_PL01X
845 This option selects UART0 at 0x10009000. Except for custom models,
846 this applies only to the V2P-CA9 tile.
848 config DEBUG_VEXPRESS_UART0_RS1
849 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
850 depends on ARCH_VEXPRESS
851 select DEBUG_UART_PL01X
853 This option selects UART0 at 0x1c090000. This applies to most
854 of the tiles using the RS1 memory map, including all new A-class
855 core tiles, FPGA-based SMMs and software models.
857 config DEBUG_VEXPRESS_UART0_CRX
858 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
859 depends on ARCH_VEXPRESS && !MMU
860 select DEBUG_UART_PL01X
862 This option selects UART0 at 0xb0090000. This is appropriate for
863 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
865 config DEBUG_VT8500_UART0
866 bool "Use UART0 on VIA/Wondermedia SoCs"
867 depends on ARCH_VT8500
869 This option selects UART0 on VIA/Wondermedia System-on-a-chip
870 devices, including VT8500, WM8505, WM8650 and WM8850.
872 config DEBUG_LL_UART_NONE
873 bool "No low-level debugging UART"
874 depends on !ARCH_MULTIPLATFORM
876 Say Y here if your platform doesn't provide a UART option
877 above. This relies on your platform choosing the right UART
878 definition internally in order for low-level debugging to
882 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
884 Say Y here if you want the debug print routines to direct
885 their output to the EmbeddedICE macrocell's DCC channel using
886 co-processor 14. This is known to work on the ARM9 style ICE
887 channel and on the XScale with the PEEDI.
889 Note that the system will appear to hang during boot if there
890 is nothing connected to read from the DCC.
892 config DEBUG_SEMIHOSTING
893 bool "Kernel low-level debug output via semihosting I/O"
895 Semihosting enables code running on an ARM target to use
896 the I/O facilities on a host debugger/emulator through a
897 simple SVC call. The host debugger or emulator must have
898 semihosting enabled for the special svc call to be trapped
899 otherwise the kernel will crash.
901 This is known to work with OpenOCD, as well as
902 ARM's Fast Models, or any other controlling environment
903 that implements semihosting.
905 For more details about semihosting, please see
906 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
908 config DEBUG_LL_UART_8250
909 bool "Kernel low-level debugging via 8250 UART"
911 Say Y here if you wish the debug print routes to direct
912 their output to an 8250 UART. You can use this option
913 to provide the parameters for the 8250 UART rather than
914 selecting one of the platform specific options above if
915 you know the parameters for the port.
917 This option is preferred over the platform specific
918 options; the platform specific options are deprecated
919 and will be soon removed.
921 config DEBUG_LL_UART_EFM32
922 bool "Kernel low-level debugging via efm32 UART"
923 depends on ARCH_EFM32
925 Say Y here if you want the debug print routines to direct
926 their output to an UART or USART port on efm32 based
927 machines. Use the following addresses for DEBUG_UART_PHYS:
935 config DEBUG_LL_UART_PL01X
936 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
938 Say Y here if you wish the debug print routes to direct
939 their output to a PL01x Primecell UART. You can use
940 this option to provide the parameters for the UART
941 rather than selecting one of the platform specific
942 options above if you know the parameters for the port.
944 This option is preferred over the platform specific
945 options; the platform specific options are deprecated
946 and will be soon removed.
950 config DEBUG_EXYNOS_UART
953 config DEBUG_S3C2410_UART
955 select DEBUG_S3C24XX_UART
957 config DEBUG_S3C24XX_UART
960 config DEBUG_S5PV210_UART
963 config DEBUG_OMAP2PLUS_UART
965 depends on ARCH_OMAP2PLUS
967 config DEBUG_IMX_UART_PORT
968 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
969 DEBUG_IMX25_UART || \
970 DEBUG_IMX21_IMX27_UART || \
971 DEBUG_IMX31_UART || \
972 DEBUG_IMX35_UART || \
973 DEBUG_IMX50_UART || \
974 DEBUG_IMX51_UART || \
975 DEBUG_IMX53_UART || \
976 DEBUG_IMX6Q_UART || \
977 DEBUG_IMX6SL_UART || \
982 Choose UART port on which kernel low-level debug messages
985 config DEBUG_VF_UART_PORT
986 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
991 Choose UART port on which kernel low-level debug messages
994 config DEBUG_TEGRA_UART
996 depends on ARCH_TEGRA
998 config DEBUG_STI_UART
1002 config DEBUG_LL_INCLUDE
1004 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1005 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1006 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1007 default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1008 default "debug/icedcc.S" if DEBUG_ICEDCC
1009 default "debug/imx.S" if DEBUG_IMX1_UART || \
1010 DEBUG_IMX25_UART || \
1011 DEBUG_IMX21_IMX27_UART || \
1012 DEBUG_IMX31_UART || \
1013 DEBUG_IMX35_UART || \
1014 DEBUG_IMX50_UART || \
1015 DEBUG_IMX51_UART || \
1016 DEBUG_IMX53_UART ||\
1017 DEBUG_IMX6Q_UART || \
1018 DEBUG_IMX6SL_UART || \
1020 default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
1021 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1022 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1023 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1024 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
1025 default "debug/sti.S" if DEBUG_STI_UART
1026 default "debug/tegra.S" if DEBUG_TEGRA_UART
1027 default "debug/ux500.S" if DEBUG_UX500_UART
1028 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1029 default "debug/vf.S" if DEBUG_VF_UART
1030 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1031 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1032 default "mach/debug-macro.S"
1034 # Compatibility options for PL01x
1035 config DEBUG_UART_PL01X
1036 def_bool ARCH_EP93XX || \
1037 ARCH_INTEGRATOR || \
1043 # Compatibility options for 8250
1044 config DEBUG_UART_8250
1045 def_bool ARCH_DOVE || ARCH_EBSA110 || \
1046 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1047 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1048 ARCH_IOP33X || ARCH_IXP4XX || \
1049 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1051 config DEBUG_UART_PHYS
1052 hex "Physical base address of debug UART"
1053 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1054 default 0x01c28000 if DEBUG_SUNXI_UART0
1055 default 0x01c28400 if DEBUG_SUNXI_UART1
1056 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1057 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1058 default 0x01f02800 if DEBUG_SUNXI_R_UART
1059 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1060 default 0x02531000 if DEBUG_KEYSTONE_UART1
1061 default 0x03010fe0 if ARCH_RPC
1062 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \
1063 DEBUG_VEXPRESS_UART0_CA9
1064 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1065 default 0x10124000 if DEBUG_RK3X_UART0
1066 default 0x10126000 if DEBUG_RK3X_UART1
1067 default 0x101f1000 if ARCH_VERSATILE
1068 default 0x101fb000 if DEBUG_NOMADIK_UART
1069 default 0x16000000 if ARCH_INTEGRATOR
1070 default 0x18000300 if DEBUG_BCM_5301X
1071 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1072 default 0x20060000 if DEBUG_RK29_UART0
1073 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1074 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1075 default 0x20201000 if DEBUG_BCM2835
1076 default 0x3e000000 if DEBUG_BCM_KONA_UART
1077 default 0x4000e400 if DEBUG_LL_UART_EFM32
1078 default 0x40090000 if ARCH_LPC32XX
1079 default 0x40100000 if DEBUG_PXA_UART1
1080 default 0x42000000 if ARCH_GEMINI
1081 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1082 DEBUG_S3C2410_UART0)
1083 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1084 DEBUG_S3C2410_UART1)
1085 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1086 DEBUG_S3C2410_UART2)
1087 default 0x7c0003f8 if FOOTBRIDGE
1088 default 0x80070000 if DEBUG_IMX23_UART
1089 default 0x80074000 if DEBUG_IMX28_UART
1090 default 0x80230000 if DEBUG_PICOXCELL_UART
1091 default 0x808c0000 if ARCH_EP93XX
1092 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1093 default 0xa9a00000 if DEBUG_MSM_UART
1094 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1095 default 0xc0013000 if DEBUG_U300_UART
1096 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1097 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1098 default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1099 default 0xd0012000 if DEBUG_MVEBU_UART
1100 default 0xd4017000 if DEBUG_MMP_UART2
1101 default 0xd4018000 if DEBUG_MMP_UART3
1102 default 0xe0000000 if ARCH_SPEAR13XX
1103 default 0xf0000be0 if ARCH_EBSA110
1104 default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE
1105 default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
1107 default 0xf7fc9000 if DEBUG_BERLIN_UART
1108 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1109 default 0xf991e000 if DEBUG_QCOM_UARTDM
1110 default 0xfcb00000 if DEBUG_HI3620_UART
1111 default 0xfe800000 if ARCH_IOP32X
1112 default 0xffc02000 if DEBUG_SOCFPGA_UART
1113 default 0xffd82340 if ARCH_IOP13XX
1114 default 0xfff36000 if DEBUG_HIGHBANK_UART
1115 default 0xfffff700 if ARCH_IOP33X
1116 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1117 DEBUG_LL_UART_EFM32 || \
1118 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1119 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1121 config DEBUG_UART_VIRT
1122 hex "Virtual base address of debug UART"
1123 default 0xe0010fe0 if ARCH_RPC
1124 default 0xe1000000 if DEBUG_MSM_UART
1125 default 0xf0000be0 if ARCH_EBSA110
1126 default 0xf0009000 if DEBUG_CNS3XXX
1127 default 0xf01fb000 if DEBUG_NOMADIK_UART
1128 default 0xf0201000 if DEBUG_BCM2835
1129 default 0xf1000300 if DEBUG_BCM_5301X
1130 default 0xf11f1000 if ARCH_VERSATILE
1131 default 0xf1600000 if ARCH_INTEGRATOR
1132 default 0xf1c28000 if DEBUG_SUNXI_UART0
1133 default 0xf1c28400 if DEBUG_SUNXI_UART1
1134 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1135 default 0xf2100000 if DEBUG_PXA_UART1
1136 default 0xf4090000 if ARCH_LPC32XX
1137 default 0xf4200000 if ARCH_GEMINI
1138 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1139 DEBUG_S3C2410_UART0)
1140 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1141 DEBUG_S3C2410_UART1)
1142 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1143 DEBUG_S3C2410_UART2)
1144 default 0xf7fc9000 if DEBUG_BERLIN_UART
1145 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1146 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1147 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1148 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1149 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1150 default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1151 default 0xfd000000 if ARCH_SPEAR13XX
1152 default 0xfd012000 if ARCH_MV78XX0
1153 default 0xfde12000 if ARCH_DOVE
1154 default 0xfe012000 if ARCH_ORION5X
1155 default 0xfe017000 if DEBUG_MMP_UART2
1156 default 0xfe018000 if DEBUG_MMP_UART3
1157 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1158 default 0xfe230000 if DEBUG_PICOXCELL_UART
1159 default 0xfe300000 if DEBUG_BCM_KONA_UART
1160 default 0xfe800000 if ARCH_IOP32X
1161 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1162 default 0xfeb24000 if DEBUG_RK3X_UART0
1163 default 0xfeb26000 if DEBUG_RK3X_UART1
1164 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1165 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1166 default 0xfec02000 if DEBUG_SOCFPGA_UART
1167 default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
1168 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1169 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1170 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1171 default 0xfed60000 if DEBUG_RK29_UART0
1172 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1173 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1174 default 0xfedc0000 if ARCH_EP93XX
1175 default 0xfee003f8 if FOOTBRIDGE
1176 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1177 default 0xfee82340 if ARCH_IOP13XX
1178 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1179 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1180 default 0xfef36000 if DEBUG_HIGHBANK_UART
1181 default 0xfefff700 if ARCH_IOP33X
1182 default 0xff003000 if DEBUG_U300_UART
1183 default DEBUG_UART_PHYS if !MMU
1184 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1185 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1186 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1188 config DEBUG_UART_8250_SHIFT
1189 int "Register offset shift for the 8250 debug UART"
1190 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1191 default 0 if FOOTBRIDGE || ARCH_IOP32X
1194 config DEBUG_UART_8250_WORD
1195 bool "Use 32-bit accesses for 8250 UART"
1196 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1197 depends on DEBUG_UART_8250_SHIFT >= 2
1198 default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1200 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1201 DEBUG_DAVINCI_DA8XX_UART2 || \
1204 config DEBUG_UART_8250_FLOW_CONTROL
1205 bool "Enable flow control for 8250 UART"
1206 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1207 default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1209 config DEBUG_UNCOMPRESS
1211 depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG
1212 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1213 (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1215 This option influences the normal decompressor output for
1216 multiplatform kernels. Normally, multiplatform kernels disable
1217 decompressor output because it is not possible to know where to
1218 send the decompressor output.
1220 When this option is set, the selected DEBUG_LL output method
1221 will be re-used for normal decompressor output on multiplatform
1225 config UNCOMPRESS_INCLUDE
1227 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1228 PLAT_SAMSUNG || ARCH_EFM32
1229 default "mach/uncompress.h"
1235 Say Y here if you want to have an early console using the
1236 kernel low-level debugging functions. Add earlyprintk to your
1237 kernel parameters to enable this console.
1240 bool "On-chip ETM and ETB"
1243 Enables the on-chip embedded trace macrocell and embedded trace
1244 buffer driver that will allow you to collect traces of the
1247 config ARM_KPROBES_TEST
1248 tristate "Kprobes test module"
1249 depends on KPROBES && MODULES
1251 Perform tests of kprobes API and instruction set simulation.
1253 config PID_IN_CONTEXTIDR
1254 bool "Write the current PID to the CONTEXTIDR register"
1255 depends on CPU_COPY_V6
1257 Enabling this option causes the kernel to write the current PID to
1258 the PROCID field of the CONTEXTIDR register, at the expense of some
1259 additional instructions during context switch. Say Y here only if you
1260 are planning to use hardware trace tools with this kernel.
1262 config DEBUG_SET_MODULE_RONX
1263 bool "Set loadable kernel module data as NX and text as RO"
1266 This option helps catch unintended modifications to loadable
1267 kernel module's text and read-only data. It also prevents execution
1268 of module data. Such protection may interfere with run-time code
1269 patching and dynamic kernel tracing - and they might also protect
1270 against certain classes of kernel exploits.
1271 If in doubt, say "N".