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_HIGHBANK_UART
227 bool "Kernel low-level debugging messages via Highbank UART"
228 depends on ARCH_HIGHBANK
229 select DEBUG_UART_PL01X
231 Say Y here if you want the debug print routines to direct
232 their output to the UART on Highbank based devices.
234 config DEBUG_HIP04_UART
235 bool "Hisilicon HiP04 Debug UART"
236 depends on ARCH_HIP04
237 select DEBUG_UART_8250
239 Say Y here if you want kernel low-level debugging support
242 config DEBUG_HIX5HD2_UART
243 bool "Hisilicon Hix5hd2 Debug UART"
244 depends on ARCH_HIX5HD2
245 select DEBUG_UART_PL01X
247 Say Y here if you want kernel low-level debugging support
250 config DEBUG_IMX1_UART
251 bool "i.MX1 Debug UART"
254 Say Y here if you want kernel low-level debugging support
257 config DEBUG_IMX23_UART
258 bool "i.MX23 Debug UART"
260 select DEBUG_UART_PL01X
262 Say Y here if you want kernel low-level debugging support
265 config DEBUG_IMX25_UART
266 bool "i.MX25 Debug UART"
269 Say Y here if you want kernel low-level debugging support
272 config DEBUG_IMX21_IMX27_UART
273 bool "i.MX21 and i.MX27 Debug UART"
274 depends on SOC_IMX21 || SOC_IMX27
276 Say Y here if you want kernel low-level debugging support
279 config DEBUG_IMX28_UART
280 bool "i.MX28 Debug UART"
282 select DEBUG_UART_PL01X
284 Say Y here if you want kernel low-level debugging support
287 config DEBUG_IMX31_UART
288 bool "i.MX31 Debug UART"
291 Say Y here if you want kernel low-level debugging support
294 config DEBUG_IMX35_UART
295 bool "i.MX35 Debug UART"
298 Say Y here if you want kernel low-level debugging support
301 config DEBUG_IMX50_UART
302 bool "i.MX50 Debug UART"
305 Say Y here if you want kernel low-level debugging support
308 config DEBUG_IMX51_UART
309 bool "i.MX51 Debug UART"
312 Say Y here if you want kernel low-level debugging support
315 config DEBUG_IMX53_UART
316 bool "i.MX53 Debug UART"
319 Say Y here if you want kernel low-level debugging support
322 config DEBUG_IMX6Q_UART
323 bool "i.MX6Q/DL Debug UART"
326 Say Y here if you want kernel low-level debugging support
329 config DEBUG_IMX6SL_UART
330 bool "i.MX6SL Debug UART"
331 depends on SOC_IMX6SL
333 Say Y here if you want kernel low-level debugging support
336 config DEBUG_IMX6SX_UART
337 bool "i.MX6SX Debug UART"
338 depends on SOC_IMX6SX
340 Say Y here if you want kernel low-level debugging support
343 config DEBUG_KEYSTONE_UART0
344 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
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 UART0 serial port on KEYSTONE2 devices.
351 config DEBUG_KEYSTONE_UART1
352 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
353 depends on ARCH_KEYSTONE
354 select DEBUG_UART_8250
356 Say Y here if you want the debug print routines to direct
357 their output to UART1 serial port on KEYSTONE2 devices.
359 config DEBUG_MMP_UART2
360 bool "Kernel low-level debugging message via MMP UART2"
362 select DEBUG_UART_8250
364 Say Y here if you want kernel low-level debugging support
367 config DEBUG_MMP_UART3
368 bool "Kernel low-level debugging message via MMP UART3"
370 select DEBUG_UART_8250
372 Say Y here if you want kernel low-level debugging support
375 config DEBUG_MSM_UART
376 bool "Kernel low-level debugging messages via MSM UART"
379 Say Y here if you want the debug print routines to direct
380 their output to the serial port on MSM devices.
382 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE #
383 MSM7X00A, QSD8X50 0xa9a00000 0xe1000000 UART1
384 MSM7X00A, QSD8X50 0xa9b00000 0xe1000000 UART2
385 MSM7X00A, QSD8X50 0xa9c00000 0xe1000000 UART3
387 MSM7X30 0xaca00000 0xe1000000 UART1
388 MSM7X30 0xacb00000 0xe1000000 UART2
389 MSM7X30 0xacc00000 0xe1000000 UART3
391 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
392 options based on your needs.
394 config DEBUG_QCOM_UARTDM
395 bool "Kernel low-level debugging messages via QCOM UARTDM"
398 Say Y here if you want the debug print routines to direct
399 their output to the serial port on Qualcomm devices.
401 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE
402 APQ8084 0xf995e000 0xfa75e000
403 MSM8X60 0x19c40000 0xf0040000
404 MSM8960 0x16440000 0xf0040000
405 MSM8974 0xf991e000 0xfa71e000
407 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
408 options based on your needs.
410 config DEBUG_MVEBU_UART
411 bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
412 depends on ARCH_MVEBU
413 select DEBUG_UART_8250
415 Say Y here if you want kernel low-level debugging support
416 on MVEBU based platforms.
418 This option should be used with the old bootloaders
419 that left the internal registers mapped at
420 0xd0000000. As of today, this is the case on
421 platforms such as the Globalscale Mirabox or the
422 Plathome OpenBlocks AX3, when using the original
425 If the wrong DEBUG_MVEBU_UART* option is selected,
426 when u-boot hands over to the kernel, the system
427 silently crashes, with no serial output at all.
429 config DEBUG_MVEBU_UART_ALTERNATE
430 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
431 depends on ARCH_MVEBU
432 select DEBUG_UART_8250
434 Say Y here if you want kernel low-level debugging support
435 on MVEBU based platforms.
437 This option should be used with the new bootloaders
438 that remap the internal registers at 0xf1000000.
440 If the wrong DEBUG_MVEBU_UART* option is selected,
441 when u-boot hands over to the kernel, the system
442 silently crashes, with no serial output at all.
448 Say Y here if you want kernel low-level debugging support
449 on Vybrid based platforms.
451 config DEBUG_NOMADIK_UART
452 bool "Kernel low-level debugging messages via NOMADIK UART"
453 depends on ARCH_NOMADIK
454 select DEBUG_UART_PL01X
456 Say Y here if you want kernel low-level debugging support
457 on NOMADIK based platforms.
459 config DEBUG_NSPIRE_CLASSIC_UART
460 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
461 depends on ARCH_NSPIRE
462 select DEBUG_UART_8250
464 Say Y here if you want kernel low-level debugging support
465 on TI-NSPIRE classic models.
467 config DEBUG_NSPIRE_CX_UART
468 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
469 depends on ARCH_NSPIRE
470 select DEBUG_UART_PL01X
472 Say Y here if you want kernel low-level debugging support
473 on TI-NSPIRE CX models.
475 config DEBUG_OMAP2UART1
476 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
477 depends on ARCH_OMAP2PLUS
478 select DEBUG_OMAP2PLUS_UART
480 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
481 omap3 torpedo and 3530 lv som.
483 config DEBUG_OMAP2UART2
484 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
485 depends on ARCH_OMAP2PLUS
486 select DEBUG_OMAP2PLUS_UART
488 config DEBUG_OMAP2UART3
489 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
490 depends on ARCH_OMAP2PLUS
491 select DEBUG_OMAP2PLUS_UART
493 config DEBUG_OMAP3UART3
494 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
495 depends on ARCH_OMAP2PLUS
496 select DEBUG_OMAP2PLUS_UART
498 This covers at least cm_t3x, beagle, crane, devkit8000,
499 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
502 config DEBUG_OMAP4UART3
503 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
504 depends on ARCH_OMAP2PLUS
505 select DEBUG_OMAP2PLUS_UART
507 config DEBUG_OMAP3UART4
508 bool "Kernel low-level debugging messages via OMAP36XX UART4"
509 depends on ARCH_OMAP2PLUS
510 select DEBUG_OMAP2PLUS_UART
512 config DEBUG_OMAP4UART4
513 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
514 depends on ARCH_OMAP2PLUS
515 select DEBUG_OMAP2PLUS_UART
517 config DEBUG_TI81XXUART1
518 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
519 depends on ARCH_OMAP2PLUS
520 select DEBUG_OMAP2PLUS_UART
522 config DEBUG_TI81XXUART2
523 bool "Kernel low-level debugging messages via TI81XX UART2"
524 depends on ARCH_OMAP2PLUS
525 select DEBUG_OMAP2PLUS_UART
527 config DEBUG_TI81XXUART3
528 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
529 depends on ARCH_OMAP2PLUS
530 select DEBUG_OMAP2PLUS_UART
532 config DEBUG_AM33XXUART1
533 bool "Kernel low-level debugging messages via AM33XX UART1"
534 depends on ARCH_OMAP2PLUS
535 select DEBUG_OMAP2PLUS_UART
537 config DEBUG_ZOOM_UART
538 bool "Kernel low-level debugging messages via Zoom2/3 UART"
539 depends on ARCH_OMAP2PLUS
540 select DEBUG_OMAP2PLUS_UART
542 config DEBUG_PICOXCELL_UART
543 depends on ARCH_PICOXCELL
544 bool "Use PicoXcell UART for low-level debug"
545 select DEBUG_UART_8250
547 Say Y here if you want kernel low-level debugging support
548 on PicoXcell based platforms.
550 config DEBUG_PXA_UART1
552 bool "Use PXA UART1 for low-level debug"
553 select DEBUG_UART_8250
555 Say Y here if you want kernel low-level debugging support
558 config DEBUG_REALVIEW_STD_PORT
559 bool "RealView Default UART"
560 depends on ARCH_REALVIEW
561 select DEBUG_UART_PL01X
563 Say Y here if you want the debug print routines to direct
564 their output to the serial port on RealView EB, PB11MP, PBA8
567 config DEBUG_REALVIEW_PB1176_PORT
568 bool "RealView PB1176 UART"
569 depends on MACH_REALVIEW_PB1176
570 select DEBUG_UART_PL01X
572 Say Y here if you want the debug print routines to direct
573 their output to the standard serial port on the RealView
576 config DEBUG_RK29_UART0
577 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
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_UART1
585 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
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_RK29_UART2
593 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
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_UART0
601 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
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_UART1
609 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
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_UART2
617 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
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_RK3X_UART3
625 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
626 depends on ARCH_ROCKCHIP
627 select DEBUG_UART_8250
629 Say Y here if you want kernel low-level debugging support
630 on Rockchip based platforms.
632 config DEBUG_RK32_UART2
633 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
634 depends on ARCH_ROCKCHIP
635 select DEBUG_UART_8250
637 Say Y here if you want kernel low-level debugging support
638 on Rockchip RK32xx based platforms.
640 config DEBUG_S3C_UART0
641 depends on PLAT_SAMSUNG
642 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
643 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
644 select DEBUG_S5PV210_UART if ARCH_S5PV210
645 bool "Use Samsung S3C UART 0 for low-level debug"
647 Say Y here if you want the debug print routines to direct
648 their output to UART 0. The port must have been initialised
649 by the boot-loader before use.
651 config DEBUG_S3C_UART1
652 depends on PLAT_SAMSUNG
653 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
654 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
655 select DEBUG_S5PV210_UART if ARCH_S5PV210
656 bool "Use Samsung S3C UART 1 for low-level debug"
658 Say Y here if you want the debug print routines to direct
659 their output to UART 1. The port must have been initialised
660 by the boot-loader before use.
662 config DEBUG_S3C_UART2
663 depends on PLAT_SAMSUNG
664 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
665 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
666 select DEBUG_S5PV210_UART if ARCH_S5PV210
667 bool "Use Samsung S3C UART 2 for low-level debug"
669 Say Y here if you want the debug print routines to direct
670 their output to UART 2. The port must have been initialised
671 by the boot-loader before use.
673 config DEBUG_S3C_UART3
674 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
675 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
676 select DEBUG_S5PV210_UART if ARCH_S5PV210
677 bool "Use Samsung S3C UART 3 for low-level debug"
679 Say Y here if you want the debug print routines to direct
680 their output to UART 3. The port must have been initialised
681 by the boot-loader before use.
683 config DEBUG_S3C2410_UART0
684 depends on ARCH_S3C24XX
685 select DEBUG_S3C2410_UART
686 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
688 Say Y here if you want the debug print routines to direct
689 their output to UART 0. The port must have been initialised
690 by the boot-loader before use.
692 config DEBUG_S3C2410_UART1
693 depends on ARCH_S3C24XX
694 select DEBUG_S3C2410_UART
695 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
697 Say Y here if you want the debug print routines to direct
698 their output to UART 1. The port must have been initialised
699 by the boot-loader before use.
701 config DEBUG_S3C2410_UART2
702 depends on ARCH_S3C24XX
703 select DEBUG_S3C2410_UART
704 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
706 Say Y here if you want the debug print routines to direct
707 their output to UART 2. The port must have been initialised
708 by the boot-loader before use.
710 config DEBUG_SOCFPGA_UART
711 depends on ARCH_SOCFPGA
712 bool "Use SOCFPGA UART for low-level debug"
713 select DEBUG_UART_8250
715 Say Y here if you want kernel low-level debugging support
716 on SOCFPGA based platforms.
718 config DEBUG_SUNXI_UART0
719 bool "Kernel low-level debugging messages via sunXi UART0"
720 depends on ARCH_SUNXI
721 select DEBUG_UART_8250
723 Say Y here if you want kernel low-level debugging support
724 on Allwinner A1X based platforms on the UART0.
726 config DEBUG_SUNXI_UART1
727 bool "Kernel low-level debugging messages via sunXi UART1"
728 depends on ARCH_SUNXI
729 select DEBUG_UART_8250
731 Say Y here if you want kernel low-level debugging support
732 on Allwinner A1X based platforms on the UART1.
734 config DEBUG_SUNXI_R_UART
735 bool "Kernel low-level debugging messages via sunXi R_UART"
736 depends on MACH_SUN6I || MACH_SUN8I
737 select DEBUG_UART_8250
739 Say Y here if you want kernel low-level debugging support
740 on Allwinner A31/A23 based platforms on the R_UART.
742 config TEGRA_DEBUG_UART_AUTO_ODMDATA
743 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
744 depends on ARCH_TEGRA
745 select DEBUG_TEGRA_UART
747 Automatically determines which UART to use for low-level
748 debug based on the ODMDATA value. This value is part of
749 the BCT, and is written to the boot memory device using
750 nvflash, or other flashing tool. When bits 19:18 are 3,
751 then bits 17:15 indicate which UART to use; 0/1/2/3/4
754 config TEGRA_DEBUG_UARTA
755 bool "Kernel low-level debugging messages via Tegra UART A"
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_UARTB
763 bool "Kernel low-level debugging messages via Tegra UART B"
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_UARTC
771 bool "Kernel low-level debugging messages via Tegra UART C"
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 TEGRA_DEBUG_UARTD
779 bool "Kernel low-level debugging messages via Tegra UART D"
780 depends on ARCH_TEGRA
781 select DEBUG_TEGRA_UART
783 Say Y here if you want kernel low-level debugging support
784 on Tegra based platforms.
786 config TEGRA_DEBUG_UARTE
787 bool "Kernel low-level debugging messages via Tegra UART E"
788 depends on ARCH_TEGRA
789 select DEBUG_TEGRA_UART
791 Say Y here if you want kernel low-level debugging support
792 on Tegra based platforms.
794 config DEBUG_SIRFPRIMA2_UART1
795 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
796 depends on ARCH_PRIMA2
798 Say Y here if you want the debug print routines to direct
799 their output to the uart1 port on SiRFprimaII devices.
801 config DEBUG_SIRFMARCO_UART1
802 bool "Kernel low-level debugging messages via SiRFmarco UART1"
803 depends on ARCH_MARCO
805 Say Y here if you want the debug print routines to direct
806 their output to the uart1 port on SiRFmarco devices.
808 config STIH41X_DEBUG_ASC2
809 bool "Use StiH415/416 ASC2 UART for low-level debug"
811 select DEBUG_STI_UART
813 Say Y here if you want kernel low-level debugging support
814 on STiH415/416 based platforms like b2000, which has
815 default UART wired up to ASC2.
819 config STIH41X_DEBUG_SBC_ASC1
820 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
822 select DEBUG_STI_UART
824 Say Y here if you want kernel low-level debugging support
825 on STiH415/416 based platforms like b2020. which has
826 default UART wired up to SBC ASC1.
830 config DEBUG_U300_UART
831 bool "Kernel low-level debugging messages via U300 UART0"
833 select DEBUG_UART_PL01X
835 Say Y here if you want the debug print routines to direct
836 their output to the uart port on U300 devices.
838 config DEBUG_UX500_UART
839 depends on ARCH_U8500
840 bool "Use Ux500 UART for low-level debug"
842 Say Y here if you want kernel low-level debugging support
843 on Ux500 based platforms.
845 config DEBUG_VEXPRESS_UART0_DETECT
846 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
847 depends on ARCH_VEXPRESS && CPU_CP15_MMU
849 This option enables a simple heuristic which tries to determine
850 the motherboard's memory map variant (original or RS1) and then
851 choose the relevant UART0 base address.
853 Note that this will only work with standard A-class core tiles,
854 and may fail with non-standard SMM or custom software models.
856 config DEBUG_VEXPRESS_UART0_CA9
857 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
858 depends on ARCH_VEXPRESS
859 select DEBUG_UART_PL01X
861 This option selects UART0 at 0x10009000. Except for custom models,
862 this applies only to the V2P-CA9 tile.
864 config DEBUG_VEXPRESS_UART0_RS1
865 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
866 depends on ARCH_VEXPRESS
867 select DEBUG_UART_PL01X
869 This option selects UART0 at 0x1c090000. This applies to most
870 of the tiles using the RS1 memory map, including all new A-class
871 core tiles, FPGA-based SMMs and software models.
873 config DEBUG_VEXPRESS_UART0_CRX
874 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
875 depends on ARCH_VEXPRESS && !MMU
876 select DEBUG_UART_PL01X
878 This option selects UART0 at 0xb0090000. This is appropriate for
879 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
881 config DEBUG_VT8500_UART0
882 bool "Use UART0 on VIA/Wondermedia SoCs"
883 depends on ARCH_VT8500
885 This option selects UART0 on VIA/Wondermedia System-on-a-chip
886 devices, including VT8500, WM8505, WM8650 and WM8850.
888 config DEBUG_LL_UART_NONE
889 bool "No low-level debugging UART"
890 depends on !ARCH_MULTIPLATFORM
892 Say Y here if your platform doesn't provide a UART option
893 above. This relies on your platform choosing the right UART
894 definition internally in order for low-level debugging to
898 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
900 Say Y here if you want the debug print routines to direct
901 their output to the EmbeddedICE macrocell's DCC channel using
902 co-processor 14. This is known to work on the ARM9 style ICE
903 channel and on the XScale with the PEEDI.
905 Note that the system will appear to hang during boot if there
906 is nothing connected to read from the DCC.
908 config DEBUG_SEMIHOSTING
909 bool "Kernel low-level debug output via semihosting I/O"
911 Semihosting enables code running on an ARM target to use
912 the I/O facilities on a host debugger/emulator through a
913 simple SVC call. The host debugger or emulator must have
914 semihosting enabled for the special svc call to be trapped
915 otherwise the kernel will crash.
917 This is known to work with OpenOCD, as well as
918 ARM's Fast Models, or any other controlling environment
919 that implements semihosting.
921 For more details about semihosting, please see
922 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
924 config DEBUG_LL_UART_8250
925 bool "Kernel low-level debugging via 8250 UART"
927 Say Y here if you wish the debug print routes to direct
928 their output to an 8250 UART. You can use this option
929 to provide the parameters for the 8250 UART rather than
930 selecting one of the platform specific options above if
931 you know the parameters for the port.
933 This option is preferred over the platform specific
934 options; the platform specific options are deprecated
935 and will be soon removed.
937 config DEBUG_LL_UART_EFM32
938 bool "Kernel low-level debugging via efm32 UART"
939 depends on ARCH_EFM32
941 Say Y here if you want the debug print routines to direct
942 their output to an UART or USART port on efm32 based
943 machines. Use the following addresses for DEBUG_UART_PHYS:
951 config DEBUG_LL_UART_PL01X
952 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
954 Say Y here if you wish the debug print routes to direct
955 their output to a PL01x Primecell UART. You can use
956 this option to provide the parameters for the UART
957 rather than selecting one of the platform specific
958 options above if you know the parameters for the port.
960 This option is preferred over the platform specific
961 options; the platform specific options are deprecated
962 and will be soon removed.
966 config DEBUG_EXYNOS_UART
969 config DEBUG_S3C2410_UART
971 select DEBUG_S3C24XX_UART
973 config DEBUG_S3C24XX_UART
976 config DEBUG_S5PV210_UART
979 config DEBUG_OMAP2PLUS_UART
981 depends on ARCH_OMAP2PLUS
983 config DEBUG_IMX_UART_PORT
984 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
985 DEBUG_IMX25_UART || \
986 DEBUG_IMX21_IMX27_UART || \
987 DEBUG_IMX31_UART || \
988 DEBUG_IMX35_UART || \
989 DEBUG_IMX50_UART || \
990 DEBUG_IMX51_UART || \
991 DEBUG_IMX53_UART || \
992 DEBUG_IMX6Q_UART || \
993 DEBUG_IMX6SL_UART || \
998 Choose UART port on which kernel low-level debug messages
1001 config DEBUG_VF_UART_PORT
1002 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1005 depends on SOC_VF610
1007 Choose UART port on which kernel low-level debug messages
1010 config DEBUG_TEGRA_UART
1012 depends on ARCH_TEGRA
1014 config DEBUG_STI_UART
1018 config DEBUG_LL_INCLUDE
1020 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1021 default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1022 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1023 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1024 default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1025 default "debug/icedcc.S" if DEBUG_ICEDCC
1026 default "debug/imx.S" if DEBUG_IMX1_UART || \
1027 DEBUG_IMX25_UART || \
1028 DEBUG_IMX21_IMX27_UART || \
1029 DEBUG_IMX31_UART || \
1030 DEBUG_IMX35_UART || \
1031 DEBUG_IMX50_UART || \
1032 DEBUG_IMX51_UART || \
1033 DEBUG_IMX53_UART ||\
1034 DEBUG_IMX6Q_UART || \
1035 DEBUG_IMX6SL_UART || \
1037 default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
1038 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1039 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1040 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1041 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
1042 default "debug/sti.S" if DEBUG_STI_UART
1043 default "debug/tegra.S" if DEBUG_TEGRA_UART
1044 default "debug/ux500.S" if DEBUG_UX500_UART
1045 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1046 default "debug/vf.S" if DEBUG_VF_UART
1047 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1048 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1049 default "mach/debug-macro.S"
1051 # Compatibility options for PL01x
1052 config DEBUG_UART_PL01X
1053 def_bool ARCH_EP93XX || \
1054 ARCH_INTEGRATOR || \
1060 # Compatibility options for 8250
1061 config DEBUG_UART_8250
1062 def_bool ARCH_DOVE || ARCH_EBSA110 || \
1063 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1064 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1065 ARCH_IOP33X || ARCH_IXP4XX || \
1066 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1068 config DEBUG_UART_PHYS
1069 hex "Physical base address of debug UART"
1070 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1071 default 0x01c28000 if DEBUG_SUNXI_UART0
1072 default 0x01c28400 if DEBUG_SUNXI_UART1
1073 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1074 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1075 default 0x01f02800 if DEBUG_SUNXI_R_UART
1076 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1077 default 0x02531000 if DEBUG_KEYSTONE_UART1
1078 default 0x03010fe0 if ARCH_RPC
1079 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \
1080 DEBUG_VEXPRESS_UART0_CA9
1081 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1082 default 0x10124000 if DEBUG_RK3X_UART0
1083 default 0x10126000 if DEBUG_RK3X_UART1
1084 default 0x101f1000 if ARCH_VERSATILE
1085 default 0x101fb000 if DEBUG_NOMADIK_UART
1086 default 0x16000000 if ARCH_INTEGRATOR
1087 default 0x18000300 if DEBUG_BCM_5301X
1088 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1089 default 0x20060000 if DEBUG_RK29_UART0
1090 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1091 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1092 default 0x20201000 if DEBUG_BCM2835
1093 default 0x3e000000 if DEBUG_BCM_KONA_UART
1094 default 0x4000e400 if DEBUG_LL_UART_EFM32
1095 default 0x40090000 if ARCH_LPC32XX
1096 default 0x40100000 if DEBUG_PXA_UART1
1097 default 0x42000000 if ARCH_GEMINI
1098 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1099 DEBUG_S3C2410_UART0)
1100 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1101 DEBUG_S3C2410_UART1)
1102 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1103 DEBUG_S3C2410_UART2)
1104 default 0x7c0003f8 if FOOTBRIDGE
1105 default 0x80070000 if DEBUG_IMX23_UART
1106 default 0x80074000 if DEBUG_IMX28_UART
1107 default 0x80230000 if DEBUG_PICOXCELL_UART
1108 default 0x808c0000 if ARCH_EP93XX
1109 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1110 default 0xa9a00000 if DEBUG_MSM_UART
1111 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1112 default 0xc0013000 if DEBUG_U300_UART
1113 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1114 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1115 default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1116 default 0xd0012000 if DEBUG_MVEBU_UART
1117 default 0xd4017000 if DEBUG_MMP_UART2
1118 default 0xd4018000 if DEBUG_MMP_UART3
1119 default 0xe0000000 if ARCH_SPEAR13XX
1120 default 0xe4007000 if DEBUG_HIP04_UART
1121 default 0xf0000be0 if ARCH_EBSA110
1122 default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE
1123 default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
1125 default 0xf7fc9000 if DEBUG_BERLIN_UART
1126 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1127 default 0xf991e000 if DEBUG_QCOM_UARTDM
1128 default 0xfcb00000 if DEBUG_HI3620_UART
1129 default 0xfe800000 if ARCH_IOP32X
1130 default 0xff690000 if DEBUG_RK32_UART2
1131 default 0xffc02000 if DEBUG_SOCFPGA_UART
1132 default 0xffd82340 if ARCH_IOP13XX
1133 default 0xfff36000 if DEBUG_HIGHBANK_UART
1134 default 0xfffff700 if ARCH_IOP33X
1135 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1136 DEBUG_LL_UART_EFM32 || \
1137 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1138 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1140 config DEBUG_UART_VIRT
1141 hex "Virtual base address of debug UART"
1142 default 0xe0010fe0 if ARCH_RPC
1143 default 0xe1000000 if DEBUG_MSM_UART
1144 default 0xf0000be0 if ARCH_EBSA110
1145 default 0xf0009000 if DEBUG_CNS3XXX
1146 default 0xf01fb000 if DEBUG_NOMADIK_UART
1147 default 0xf0201000 if DEBUG_BCM2835
1148 default 0xf1000300 if DEBUG_BCM_5301X
1149 default 0xf11f1000 if ARCH_VERSATILE
1150 default 0xf1600000 if ARCH_INTEGRATOR
1151 default 0xf1c28000 if DEBUG_SUNXI_UART0
1152 default 0xf1c28400 if DEBUG_SUNXI_UART1
1153 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1154 default 0xf2100000 if DEBUG_PXA_UART1
1155 default 0xf4090000 if ARCH_LPC32XX
1156 default 0xf4200000 if ARCH_GEMINI
1157 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1158 DEBUG_S3C2410_UART0)
1159 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1160 DEBUG_S3C2410_UART1)
1161 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1162 DEBUG_S3C2410_UART2)
1163 default 0xf7fc9000 if DEBUG_BERLIN_UART
1164 default 0xf8007000 if DEBUG_HIP04_UART
1165 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1166 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1167 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1168 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1169 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1170 default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1171 default 0xfd000000 if ARCH_SPEAR13XX
1172 default 0xfd012000 if ARCH_MV78XX0
1173 default 0xfde12000 if ARCH_DOVE
1174 default 0xfe012000 if ARCH_ORION5X
1175 default 0xfe017000 if DEBUG_MMP_UART2
1176 default 0xfe018000 if DEBUG_MMP_UART3
1177 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1178 default 0xfe230000 if DEBUG_PICOXCELL_UART
1179 default 0xfe300000 if DEBUG_BCM_KONA_UART
1180 default 0xfe800000 if ARCH_IOP32X
1181 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1182 default 0xfeb24000 if DEBUG_RK3X_UART0
1183 default 0xfeb26000 if DEBUG_RK3X_UART1
1184 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1185 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1186 default 0xfec02000 if DEBUG_SOCFPGA_UART
1187 default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
1188 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1189 default 0xfec90000 if DEBUG_RK32_UART2
1190 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1191 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1192 default 0xfed60000 if DEBUG_RK29_UART0
1193 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1194 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1195 default 0xfedc0000 if ARCH_EP93XX
1196 default 0xfee003f8 if FOOTBRIDGE
1197 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1198 default 0xfee82340 if ARCH_IOP13XX
1199 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1200 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1201 default 0xfef36000 if DEBUG_HIGHBANK_UART
1202 default 0xfefff700 if ARCH_IOP33X
1203 default 0xff003000 if DEBUG_U300_UART
1204 default DEBUG_UART_PHYS if !MMU
1205 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1206 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1207 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1209 config DEBUG_UART_8250_SHIFT
1210 int "Register offset shift for the 8250 debug UART"
1211 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1212 default 0 if FOOTBRIDGE || ARCH_IOP32X
1215 config DEBUG_UART_8250_WORD
1216 bool "Use 32-bit accesses for 8250 UART"
1217 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1218 depends on DEBUG_UART_8250_SHIFT >= 2
1219 default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1221 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1222 DEBUG_DAVINCI_DA8XX_UART2 || \
1223 DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2
1225 config DEBUG_UART_8250_FLOW_CONTROL
1226 bool "Enable flow control for 8250 UART"
1227 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1228 default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1230 config DEBUG_UNCOMPRESS
1232 depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG
1233 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1234 (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1236 This option influences the normal decompressor output for
1237 multiplatform kernels. Normally, multiplatform kernels disable
1238 decompressor output because it is not possible to know where to
1239 send the decompressor output.
1241 When this option is set, the selected DEBUG_LL output method
1242 will be re-used for normal decompressor output on multiplatform
1246 config UNCOMPRESS_INCLUDE
1248 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1249 PLAT_SAMSUNG || ARCH_EFM32
1250 default "mach/uncompress.h"
1256 Say Y here if you want to have an early console using the
1257 kernel low-level debugging functions. Add earlyprintk to your
1258 kernel parameters to enable this console.
1261 bool "On-chip ETM and ETB"
1264 Enables the on-chip embedded trace macrocell and embedded trace
1265 buffer driver that will allow you to collect traces of the
1268 config ARM_KPROBES_TEST
1269 tristate "Kprobes test module"
1270 depends on KPROBES && MODULES
1272 Perform tests of kprobes API and instruction set simulation.
1274 config PID_IN_CONTEXTIDR
1275 bool "Write the current PID to the CONTEXTIDR register"
1276 depends on CPU_COPY_V6
1278 Enabling this option causes the kernel to write the current PID to
1279 the PROCID field of the CONTEXTIDR register, at the expense of some
1280 additional instructions during context switch. Say Y here only if you
1281 are planning to use hardware trace tools with this kernel.
1283 config DEBUG_SET_MODULE_RONX
1284 bool "Set loadable kernel module data as NX and text as RO"
1287 This option helps catch unintended modifications to loadable
1288 kernel module's text and read-only data. It also prevents execution
1289 of module data. Such protection may interfere with run-time code
1290 patching and dynamic kernel tracing - and they might also protect
1291 against certain classes of kernel exploits.
1292 If in doubt, say "N".