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 DEBUG_ASM9260_UART
97 bool "Kernel low-level debugging via asm9260 UART"
98 depends on MACH_ASM9260
100 Say Y here if you want the debug print routines to direct
101 their output to an UART or USART port on asm9260 based
104 DEBUG_UART_PHYS | DEBUG_UART_VIRT
106 0x80000000 | 0xf0000000 | UART0
107 0x80004000 | 0xf0004000 | UART1
108 0x80008000 | 0xf0008000 | UART2
109 0x8000c000 | 0xf000c000 | UART3
110 0x80010000 | 0xf0010000 | UART4
111 0x80014000 | 0xf0014000 | UART5
112 0x80018000 | 0xf0018000 | UART6
113 0x8001c000 | 0xf001c000 | UART7
114 0x80020000 | 0xf0020000 | UART8
115 0x80024000 | 0xf0024000 | UART9
117 config AT91_DEBUG_LL_DBGU0
118 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
119 depends on HAVE_AT91_DBGU0
121 config AT91_DEBUG_LL_DBGU1
122 bool "Kernel low-level debugging on 9263 and 9g45"
123 depends on HAVE_AT91_DBGU1
125 config AT91_DEBUG_LL_DBGU2
126 bool "Kernel low-level debugging on sama5d4"
127 depends on HAVE_AT91_DBGU2
130 bool "Kernel low-level debugging on BCM2835 PL011 UART"
131 depends on ARCH_BCM2835
132 select DEBUG_UART_PL01X
134 config DEBUG_BCM_5301X
135 bool "Kernel low-level debugging on BCM5301X UART1"
136 depends on ARCH_BCM_5301X
137 select DEBUG_UART_8250
139 config DEBUG_BCM_KONA_UART
140 bool "Kernel low-level debugging messages via BCM KONA UART"
141 depends on ARCH_BCM_MOBILE
142 select DEBUG_UART_8250
144 Say Y here if you want kernel low-level debugging support
145 on Broadcom SoC platforms.
146 This low level debug works for Broadcom
147 mobile SoCs in the Kona family of chips (e.g. bcm28155,
151 bool "Kernel low-level debugging on BCM63XX UART"
152 depends on ARCH_BCM_63XX
153 select DEBUG_UART_BCM63XX
155 config DEBUG_BERLIN_UART
156 bool "Marvell Berlin SoC Debug UART"
157 depends on ARCH_BERLIN
158 select DEBUG_UART_8250
160 Say Y here if you want kernel low-level debugging support
161 on Marvell Berlin SoC based platforms.
163 config DEBUG_BRCMSTB_UART
164 bool "Use BRCMSTB UART for low-level debug"
165 depends on ARCH_BRCMSTB
166 select DEBUG_UART_8250
168 Say Y here if you want the debug print routines to direct
169 their output to the first serial port on these devices.
171 If you have a Broadcom STB chip and would like early print
172 messages to appear over the UART, select this option.
174 config DEBUG_CLPS711X_UART1
175 bool "Kernel low-level debugging messages via UART1"
176 depends on ARCH_CLPS711X
178 Say Y here if you want the debug print routines to direct
179 their output to the first serial port on these devices.
181 config DEBUG_CLPS711X_UART2
182 bool "Kernel low-level debugging messages via UART2"
183 depends on ARCH_CLPS711X
185 Say Y here if you want the debug print routines to direct
186 their output to the second serial port on these devices.
189 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
190 depends on ARCH_CNS3XXX
191 select DEBUG_UART_8250
193 Say Y here if you want the debug print routines to direct
194 their output to the CNS3xxx UART0.
196 config DEBUG_DAVINCI_DA8XX_UART1
197 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
198 depends on ARCH_DAVINCI_DA8XX
199 select DEBUG_UART_8250
201 Say Y here if you want the debug print routines to direct
202 their output to UART1 serial port on DaVinci DA8XX devices.
204 config DEBUG_DAVINCI_DA8XX_UART2
205 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
206 depends on ARCH_DAVINCI_DA8XX
207 select DEBUG_UART_8250
209 Say Y here if you want the debug print routines to direct
210 their output to UART2 serial port on DaVinci DA8XX devices.
212 config DEBUG_DAVINCI_DMx_UART0
213 bool "Kernel low-level debugging on DaVinci DMx using UART0"
214 depends on ARCH_DAVINCI_DMx
215 select DEBUG_UART_8250
217 Say Y here if you want the debug print routines to direct
218 their output to UART0 serial port on DaVinci DMx devices.
220 config DEBUG_ZYNQ_UART0
221 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
224 Say Y here if you want the debug print routines to direct
225 their output to UART0 on the Zynq platform.
227 config DEBUG_ZYNQ_UART1
228 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
231 Say Y here if you want the debug print routines to direct
232 their output to UART1 on the Zynq platform.
234 If you have a ZC702 board and want early boot messages to
235 appear on the USB serial adaptor, select this option.
237 config DEBUG_DC21285_PORT
238 bool "Kernel low-level debugging messages via footbridge serial port"
239 depends on FOOTBRIDGE
241 Say Y here if you want the debug print routines to direct
242 their output to the serial port in the DC21285 (Footbridge).
244 config DEBUG_FOOTBRIDGE_COM1
245 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
246 depends on FOOTBRIDGE
248 Say Y here if you want the debug print routines to direct
249 their output to the 8250 at PCI COM1.
251 config DEBUG_HI3620_UART
252 bool "Hisilicon HI3620 Debug UART"
253 depends on ARCH_HI3xxx
254 select DEBUG_UART_PL01X
256 Say Y here if you want kernel low-level debugging support
259 config DEBUG_HI3716_UART
260 bool "Hisilicon Hi3716 Debug UART"
261 depends on ARCH_HI3xxx
262 select DEBUG_UART_PL01X
264 Say Y here if you want kernel low-level debugging support
267 config DEBUG_HIGHBANK_UART
268 bool "Kernel low-level debugging messages via Highbank UART"
269 depends on ARCH_HIGHBANK
270 select DEBUG_UART_PL01X
272 Say Y here if you want the debug print routines to direct
273 their output to the UART on Highbank based devices.
275 config DEBUG_HIP04_UART
276 bool "Hisilicon HiP04 Debug UART"
277 depends on ARCH_HIP04
278 select DEBUG_UART_8250
280 Say Y here if you want kernel low-level debugging support
283 config DEBUG_HIX5HD2_UART
284 bool "Hisilicon Hix5hd2 Debug UART"
285 depends on ARCH_HIX5HD2
286 select DEBUG_UART_PL01X
288 Say Y here if you want kernel low-level debugging support
291 config DEBUG_IMX1_UART
292 bool "i.MX1 Debug UART"
295 Say Y here if you want kernel low-level debugging support
298 config DEBUG_IMX23_UART
299 bool "i.MX23 Debug UART"
301 select DEBUG_UART_PL01X
303 Say Y here if you want kernel low-level debugging support
306 config DEBUG_IMX25_UART
307 bool "i.MX25 Debug UART"
310 Say Y here if you want kernel low-level debugging support
313 config DEBUG_IMX21_IMX27_UART
314 bool "i.MX21 and i.MX27 Debug UART"
315 depends on SOC_IMX21 || SOC_IMX27
317 Say Y here if you want kernel low-level debugging support
320 config DEBUG_IMX28_UART
321 bool "i.MX28 Debug UART"
323 select DEBUG_UART_PL01X
325 Say Y here if you want kernel low-level debugging support
328 config DEBUG_IMX31_UART
329 bool "i.MX31 Debug UART"
332 Say Y here if you want kernel low-level debugging support
335 config DEBUG_IMX35_UART
336 bool "i.MX35 Debug UART"
339 Say Y here if you want kernel low-level debugging support
342 config DEBUG_IMX50_UART
343 bool "i.MX50 Debug UART"
346 Say Y here if you want kernel low-level debugging support
349 config DEBUG_IMX51_UART
350 bool "i.MX51 Debug UART"
353 Say Y here if you want kernel low-level debugging support
356 config DEBUG_IMX53_UART
357 bool "i.MX53 Debug UART"
360 Say Y here if you want kernel low-level debugging support
363 config DEBUG_IMX6Q_UART
364 bool "i.MX6Q/DL Debug UART"
367 Say Y here if you want kernel low-level debugging support
370 config DEBUG_IMX6SL_UART
371 bool "i.MX6SL Debug UART"
372 depends on SOC_IMX6SL
374 Say Y here if you want kernel low-level debugging support
377 config DEBUG_IMX6SX_UART
378 bool "i.MX6SX Debug UART"
379 depends on SOC_IMX6SX
381 Say Y here if you want kernel low-level debugging support
384 config DEBUG_KEYSTONE_UART0
385 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
386 depends on ARCH_KEYSTONE
387 select DEBUG_UART_8250
389 Say Y here if you want the debug print routines to direct
390 their output to UART0 serial port on KEYSTONE2 devices.
392 config DEBUG_KEYSTONE_UART1
393 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
394 depends on ARCH_KEYSTONE
395 select DEBUG_UART_8250
397 Say Y here if you want the debug print routines to direct
398 their output to UART1 serial port on KEYSTONE2 devices.
400 config DEBUG_MESON_UARTAO
401 bool "Kernel low-level debugging via Meson6 UARTAO"
402 depends on ARCH_MESON
404 Say Y here if you want kernel low-lever debugging support
405 on Amlogic Meson6 based platforms on the UARTAO.
407 config DEBUG_MMP_UART2
408 bool "Kernel low-level debugging message via MMP UART2"
410 select DEBUG_UART_8250
412 Say Y here if you want kernel low-level debugging support
415 config DEBUG_MMP_UART3
416 bool "Kernel low-level debugging message via MMP UART3"
418 select DEBUG_UART_8250
420 Say Y here if you want kernel low-level debugging support
423 config DEBUG_MSM_UART
424 bool "Kernel low-level debugging messages via MSM UART"
427 Say Y here if you want the debug print routines to direct
428 their output to the serial port on MSM devices.
430 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE #
431 MSM7X00A, QSD8X50 0xa9a00000 0xe1000000 UART1
432 MSM7X00A, QSD8X50 0xa9b00000 0xe1000000 UART2
433 MSM7X00A, QSD8X50 0xa9c00000 0xe1000000 UART3
435 MSM7X30 0xaca00000 0xe1000000 UART1
436 MSM7X30 0xacb00000 0xe1000000 UART2
437 MSM7X30 0xacc00000 0xe1000000 UART3
439 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
440 options based on your needs.
442 config DEBUG_QCOM_UARTDM
443 bool "Kernel low-level debugging messages via QCOM UARTDM"
446 Say Y here if you want the debug print routines to direct
447 their output to the serial port on Qualcomm devices.
449 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE
450 APQ8084 0xf995e000 0xfa75e000
451 MSM8X60 0x19c40000 0xf0040000
452 MSM8960 0x16440000 0xf0040000
453 MSM8974 0xf991e000 0xfa71e000
455 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
456 options based on your needs.
458 config DEBUG_MVEBU_UART
459 bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
460 depends on ARCH_MVEBU
461 select DEBUG_UART_8250
463 Say Y here if you want kernel low-level debugging support
464 on MVEBU based platforms.
466 This option should be used with the old bootloaders
467 that left the internal registers mapped at
468 0xd0000000. As of today, this is the case on
469 platforms such as the Globalscale Mirabox or the
470 Plathome OpenBlocks AX3, when using the original
473 If the wrong DEBUG_MVEBU_UART* option is selected,
474 when u-boot hands over to the kernel, the system
475 silently crashes, with no serial output at all.
477 config DEBUG_MVEBU_UART_ALTERNATE
478 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
479 depends on ARCH_MVEBU
480 select DEBUG_UART_8250
482 Say Y here if you want kernel low-level debugging support
483 on MVEBU based platforms.
485 This option should be used with the new bootloaders
486 that remap the internal registers at 0xf1000000.
488 If the wrong DEBUG_MVEBU_UART* option is selected,
489 when u-boot hands over to the kernel, the system
490 silently crashes, with no serial output at all.
496 Say Y here if you want kernel low-level debugging support
497 on Vybrid based platforms.
499 config DEBUG_NOMADIK_UART
500 bool "Kernel low-level debugging messages via NOMADIK UART"
501 depends on ARCH_NOMADIK
502 select DEBUG_UART_PL01X
504 Say Y here if you want kernel low-level debugging support
505 on NOMADIK based platforms.
507 config DEBUG_NSPIRE_CLASSIC_UART
508 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
509 depends on ARCH_NSPIRE
510 select DEBUG_UART_8250
512 Say Y here if you want kernel low-level debugging support
513 on TI-NSPIRE classic models.
515 config DEBUG_NSPIRE_CX_UART
516 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
517 depends on ARCH_NSPIRE
518 select DEBUG_UART_PL01X
520 Say Y here if you want kernel low-level debugging support
521 on TI-NSPIRE CX models.
523 config DEBUG_OMAP2UART1
524 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
525 depends on ARCH_OMAP2PLUS
526 select DEBUG_OMAP2PLUS_UART
528 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
529 omap3 torpedo and 3530 lv som.
531 config DEBUG_OMAP2UART2
532 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
533 depends on ARCH_OMAP2PLUS
534 select DEBUG_OMAP2PLUS_UART
536 config DEBUG_OMAP2UART3
537 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
538 depends on ARCH_OMAP2PLUS
539 select DEBUG_OMAP2PLUS_UART
541 config DEBUG_OMAP3UART3
542 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
543 depends on ARCH_OMAP2PLUS
544 select DEBUG_OMAP2PLUS_UART
546 This covers at least cm_t3x, beagle, crane, devkit8000,
547 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
550 config DEBUG_OMAP4UART3
551 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
552 depends on ARCH_OMAP2PLUS
553 select DEBUG_OMAP2PLUS_UART
555 config DEBUG_OMAP3UART4
556 bool "Kernel low-level debugging messages via OMAP36XX UART4"
557 depends on ARCH_OMAP2PLUS
558 select DEBUG_OMAP2PLUS_UART
560 config DEBUG_OMAP4UART4
561 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
562 depends on ARCH_OMAP2PLUS
563 select DEBUG_OMAP2PLUS_UART
565 config DEBUG_TI81XXUART1
566 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
567 depends on ARCH_OMAP2PLUS
568 select DEBUG_OMAP2PLUS_UART
570 config DEBUG_TI81XXUART2
571 bool "Kernel low-level debugging messages via TI81XX UART2"
572 depends on ARCH_OMAP2PLUS
573 select DEBUG_OMAP2PLUS_UART
575 config DEBUG_TI81XXUART3
576 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
577 depends on ARCH_OMAP2PLUS
578 select DEBUG_OMAP2PLUS_UART
580 config DEBUG_AM33XXUART1
581 bool "Kernel low-level debugging messages via AM33XX UART1"
582 depends on ARCH_OMAP2PLUS
583 select DEBUG_OMAP2PLUS_UART
585 config DEBUG_ZOOM_UART
586 bool "Kernel low-level debugging messages via Zoom2/3 UART"
587 depends on ARCH_OMAP2PLUS
588 select DEBUG_OMAP2PLUS_UART
590 config DEBUG_PICOXCELL_UART
591 depends on ARCH_PICOXCELL
592 bool "Use PicoXcell UART for low-level debug"
593 select DEBUG_UART_8250
595 Say Y here if you want kernel low-level debugging support
596 on PicoXcell based platforms.
598 config DEBUG_PXA_UART1
600 bool "Use PXA UART1 for low-level debug"
601 select DEBUG_UART_8250
603 Say Y here if you want kernel low-level debugging support
606 config DEBUG_REALVIEW_STD_PORT
607 bool "RealView Default UART"
608 depends on ARCH_REALVIEW
609 select DEBUG_UART_PL01X
611 Say Y here if you want the debug print routines to direct
612 their output to the serial port on RealView EB, PB11MP, PBA8
615 config DEBUG_REALVIEW_PB1176_PORT
616 bool "RealView PB1176 UART"
617 depends on MACH_REALVIEW_PB1176
618 select DEBUG_UART_PL01X
620 Say Y here if you want the debug print routines to direct
621 their output to the standard serial port on the RealView
624 config DEBUG_RK29_UART0
625 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
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_RK29_UART1
633 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
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 based platforms.
640 config DEBUG_RK29_UART2
641 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
642 depends on ARCH_ROCKCHIP
643 select DEBUG_UART_8250
645 Say Y here if you want kernel low-level debugging support
646 on Rockchip based platforms.
648 config DEBUG_RK3X_UART0
649 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
650 depends on ARCH_ROCKCHIP
651 select DEBUG_UART_8250
653 Say Y here if you want kernel low-level debugging support
654 on Rockchip based platforms.
656 config DEBUG_RK3X_UART1
657 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
658 depends on ARCH_ROCKCHIP
659 select DEBUG_UART_8250
661 Say Y here if you want kernel low-level debugging support
662 on Rockchip based platforms.
664 config DEBUG_RK3X_UART2
665 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
666 depends on ARCH_ROCKCHIP
667 select DEBUG_UART_8250
669 Say Y here if you want kernel low-level debugging support
670 on Rockchip based platforms.
672 config DEBUG_RK3X_UART3
673 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
674 depends on ARCH_ROCKCHIP
675 select DEBUG_UART_8250
677 Say Y here if you want kernel low-level debugging support
678 on Rockchip based platforms.
680 config DEBUG_RK32_UART2
681 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
682 depends on ARCH_ROCKCHIP
683 select DEBUG_UART_8250
685 Say Y here if you want kernel low-level debugging support
686 on Rockchip RK32xx based platforms.
688 config DEBUG_R7S72100_SCIF2
689 bool "Kernel low-level debugging messages via SCIF2 on R7S72100"
690 depends on ARCH_R7S72100
692 Say Y here if you want kernel low-level debugging support
693 via SCIF2 on Renesas RZ/A1H (R7S72100).
695 config DEBUG_RCAR_GEN1_SCIF0
696 bool "Kernel low-level debugging messages via SCIF0 on R8A7778"
697 depends on ARCH_R8A7778
699 Say Y here if you want kernel low-level debugging support
700 via SCIF0 on Renesas R-Car M1A (R8A7778).
702 config DEBUG_RCAR_GEN1_SCIF2
703 bool "Kernel low-level debugging messages via SCIF2 on R8A7779"
704 depends on ARCH_R8A7779
706 Say Y here if you want kernel low-level debugging support
707 via SCIF2 on Renesas R-Car H1 (R8A7779).
709 config DEBUG_RCAR_GEN2_SCIF0
710 bool "Kernel low-level debugging messages via SCIF0 on R8A7790/R8A7791/R8A7793)"
711 depends on ARCH_R8A7790 || ARCH_R8A7791 || ARCH_R8A7793
713 Say Y here if you want kernel low-level debugging support
714 via SCIF0 on Renesas R-Car H2 (R8A7790), M2-W (R8A7791), or
717 config DEBUG_RCAR_GEN2_SCIF2
718 bool "Kernel low-level debugging messages via SCIF2 on R8A7794"
719 depends on ARCH_R8A7794
721 Say Y here if you want kernel low-level debugging support
722 via SCIF2 on Renesas R-Car E2 (R8A7794).
724 config DEBUG_RMOBILE_SCIFA0
725 bool "Kernel low-level debugging messages via SCIFA0 on R8A73A4/SH7372"
726 depends on ARCH_R8A73A4 || ARCH_SH7372
728 Say Y here if you want kernel low-level debugging support
729 via SCIFA0 on Renesas R-Mobile APE6 (R8A73A4) or SH-Mobile
732 config DEBUG_RMOBILE_SCIFA1
733 bool "Kernel low-level debugging messages via SCIFA1 on R8A7740"
734 depends on ARCH_R8A7740
736 Say Y here if you want kernel low-level debugging support
737 via SCIFA1 on Renesas R-Mobile A1 (R8A7740).
739 config DEBUG_RMOBILE_SCIFA4
740 bool "Kernel low-level debugging messages via SCIFA4 on SH73A0"
741 depends on ARCH_SH73A0
743 Say Y here if you want kernel low-level debugging support
744 via SCIFA4 on Renesas SH-Mobile AG5 (SH73A0).
746 config DEBUG_S3C_UART0
747 depends on PLAT_SAMSUNG
748 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
749 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
750 select DEBUG_S5PV210_UART if ARCH_S5PV210
751 bool "Use Samsung S3C UART 0 for low-level debug"
753 Say Y here if you want the debug print routines to direct
754 their output to UART 0. The port must have been initialised
755 by the boot-loader before use.
757 config DEBUG_S3C_UART1
758 depends on PLAT_SAMSUNG
759 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
760 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
761 select DEBUG_S5PV210_UART if ARCH_S5PV210
762 bool "Use Samsung S3C UART 1 for low-level debug"
764 Say Y here if you want the debug print routines to direct
765 their output to UART 1. The port must have been initialised
766 by the boot-loader before use.
768 config DEBUG_S3C_UART2
769 depends on PLAT_SAMSUNG
770 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
771 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
772 select DEBUG_S5PV210_UART if ARCH_S5PV210
773 bool "Use Samsung S3C UART 2 for low-level debug"
775 Say Y here if you want the debug print routines to direct
776 their output to UART 2. The port must have been initialised
777 by the boot-loader before use.
779 config DEBUG_S3C_UART3
780 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
781 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
782 select DEBUG_S5PV210_UART if ARCH_S5PV210
783 bool "Use Samsung S3C UART 3 for low-level debug"
785 Say Y here if you want the debug print routines to direct
786 their output to UART 3. The port must have been initialised
787 by the boot-loader before use.
789 config DEBUG_S3C2410_UART0
790 depends on ARCH_S3C24XX
791 select DEBUG_S3C2410_UART
792 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
794 Say Y here if you want the debug print routines to direct
795 their output to UART 0. The port must have been initialised
796 by the boot-loader before use.
798 config DEBUG_S3C2410_UART1
799 depends on ARCH_S3C24XX
800 select DEBUG_S3C2410_UART
801 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
803 Say Y here if you want the debug print routines to direct
804 their output to UART 1. The port must have been initialised
805 by the boot-loader before use.
807 config DEBUG_S3C2410_UART2
808 depends on ARCH_S3C24XX
809 select DEBUG_S3C2410_UART
810 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
812 Say Y here if you want the debug print routines to direct
813 their output to UART 2. The port must have been initialised
814 by the boot-loader before use.
817 depends on ARCH_SA1100
818 bool "Use SA1100 UARTs for low-level debug"
820 Say Y here if you want kernel low-level debugging support
821 on SA-11x0 UART ports. The kernel will check for the first
822 enabled UART in a sequence 3-1-2.
824 config DEBUG_SOCFPGA_UART
825 depends on ARCH_SOCFPGA
826 bool "Use SOCFPGA UART for low-level debug"
827 select DEBUG_UART_8250
829 Say Y here if you want kernel low-level debugging support
830 on SOCFPGA based platforms.
832 config DEBUG_SUN9I_UART0
833 bool "Kernel low-level debugging messages via sun9i UART0"
834 depends on MACH_SUN9I
835 select DEBUG_UART_8250
837 Say Y here if you want kernel low-level debugging support
838 on Allwinner A80 based platforms on the UART0.
840 config DEBUG_SUNXI_UART0
841 bool "Kernel low-level debugging messages via sunXi UART0"
842 depends on ARCH_SUNXI
843 select DEBUG_UART_8250
845 Say Y here if you want kernel low-level debugging support
846 on Allwinner A1X based platforms on the UART0.
848 config DEBUG_SUNXI_UART1
849 bool "Kernel low-level debugging messages via sunXi UART1"
850 depends on ARCH_SUNXI
851 select DEBUG_UART_8250
853 Say Y here if you want kernel low-level debugging support
854 on Allwinner A1X based platforms on the UART1.
856 config DEBUG_SUNXI_R_UART
857 bool "Kernel low-level debugging messages via sunXi R_UART"
858 depends on MACH_SUN6I || MACH_SUN8I
859 select DEBUG_UART_8250
861 Say Y here if you want kernel low-level debugging support
862 on Allwinner A31/A23 based platforms on the R_UART.
864 config TEGRA_DEBUG_UART_AUTO_ODMDATA
865 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
866 depends on ARCH_TEGRA
867 select DEBUG_TEGRA_UART
869 Automatically determines which UART to use for low-level
870 debug based on the ODMDATA value. This value is part of
871 the BCT, and is written to the boot memory device using
872 nvflash, or other flashing tool. When bits 19:18 are 3,
873 then bits 17:15 indicate which UART to use; 0/1/2/3/4
876 config TEGRA_DEBUG_UARTA
877 bool "Kernel low-level debugging messages via Tegra UART A"
878 depends on ARCH_TEGRA
879 select DEBUG_TEGRA_UART
881 Say Y here if you want kernel low-level debugging support
882 on Tegra based platforms.
884 config TEGRA_DEBUG_UARTB
885 bool "Kernel low-level debugging messages via Tegra UART B"
886 depends on ARCH_TEGRA
887 select DEBUG_TEGRA_UART
889 Say Y here if you want kernel low-level debugging support
890 on Tegra based platforms.
892 config TEGRA_DEBUG_UARTC
893 bool "Kernel low-level debugging messages via Tegra UART C"
894 depends on ARCH_TEGRA
895 select DEBUG_TEGRA_UART
897 Say Y here if you want kernel low-level debugging support
898 on Tegra based platforms.
900 config TEGRA_DEBUG_UARTD
901 bool "Kernel low-level debugging messages via Tegra UART D"
902 depends on ARCH_TEGRA
903 select DEBUG_TEGRA_UART
905 Say Y here if you want kernel low-level debugging support
906 on Tegra based platforms.
908 config TEGRA_DEBUG_UARTE
909 bool "Kernel low-level debugging messages via Tegra UART E"
910 depends on ARCH_TEGRA
911 select DEBUG_TEGRA_UART
913 Say Y here if you want kernel low-level debugging support
914 on Tegra based platforms.
916 config DEBUG_SIRFPRIMA2_UART1
917 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
918 depends on ARCH_PRIMA2
920 Say Y here if you want the debug print routines to direct
921 their output to the uart1 port on SiRFprimaII devices.
923 config DEBUG_SIRFMARCO_UART1
924 bool "Kernel low-level debugging messages via SiRFmarco UART1"
925 depends on ARCH_MARCO
927 Say Y here if you want the debug print routines to direct
928 their output to the uart1 port on SiRFmarco devices.
930 config STIH41X_DEBUG_ASC2
931 bool "Use StiH415/416 ASC2 UART for low-level debug"
933 select DEBUG_STI_UART
935 Say Y here if you want kernel low-level debugging support
936 on STiH415/416 based platforms like b2000, which has
937 default UART wired up to ASC2.
941 config STIH41X_DEBUG_SBC_ASC1
942 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
944 select DEBUG_STI_UART
946 Say Y here if you want kernel low-level debugging support
947 on STiH415/416 based platforms like b2020. which has
948 default UART wired up to SBC ASC1.
952 config DEBUG_U300_UART
953 bool "Kernel low-level debugging messages via U300 UART0"
955 select DEBUG_UART_PL01X
957 Say Y here if you want the debug print routines to direct
958 their output to the uart port on U300 devices.
960 config DEBUG_UX500_UART
961 depends on ARCH_U8500
962 bool "Use Ux500 UART for low-level debug"
964 Say Y here if you want kernel low-level debugging support
965 on Ux500 based platforms.
967 config DEBUG_MT6589_UART0
968 bool "Mediatek mt6589 UART0"
969 depends on ARCH_MEDIATEK
970 select DEBUG_UART_8250
972 Say Y here if you want kernel low-level debugging support
973 for Mediatek mt6589 based platforms on UART0.
975 config DEBUG_MT8127_UART0
976 bool "Mediatek mt8127 UART0"
977 depends on ARCH_MEDIATEK
978 select DEBUG_UART_8250
980 Say Y here if you want kernel low-level debugging support
981 for Mediatek mt8127 based platforms on UART0.
983 config DEBUG_MT8135_UART3
984 bool "Mediatek mt8135 UART3"
985 depends on ARCH_MEDIATEK
986 select DEBUG_UART_8250
988 Say Y here if you want kernel low-level debugging support
989 for Mediatek mt8135 based platforms on UART3.
991 config DEBUG_VEXPRESS_UART0_DETECT
992 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
993 depends on ARCH_VEXPRESS && CPU_CP15_MMU
995 This option enables a simple heuristic which tries to determine
996 the motherboard's memory map variant (original or RS1) and then
997 choose the relevant UART0 base address.
999 Note that this will only work with standard A-class core tiles,
1000 and may fail with non-standard SMM or custom software models.
1002 config DEBUG_VEXPRESS_UART0_CA9
1003 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
1004 depends on ARCH_VEXPRESS
1005 select DEBUG_UART_PL01X
1007 This option selects UART0 at 0x10009000. Except for custom models,
1008 this applies only to the V2P-CA9 tile.
1010 config DEBUG_VEXPRESS_UART0_RS1
1011 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
1012 depends on ARCH_VEXPRESS
1013 select DEBUG_UART_PL01X
1015 This option selects UART0 at 0x1c090000. This applies to most
1016 of the tiles using the RS1 memory map, including all new A-class
1017 core tiles, FPGA-based SMMs and software models.
1019 config DEBUG_VEXPRESS_UART0_CRX
1020 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
1021 depends on ARCH_VEXPRESS && !MMU
1022 select DEBUG_UART_PL01X
1024 This option selects UART0 at 0xb0090000. This is appropriate for
1025 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
1027 config DEBUG_VT8500_UART0
1028 bool "Use UART0 on VIA/Wondermedia SoCs"
1029 depends on ARCH_VT8500
1031 This option selects UART0 on VIA/Wondermedia System-on-a-chip
1032 devices, including VT8500, WM8505, WM8650 and WM8850.
1034 config DEBUG_LL_UART_NONE
1035 bool "No low-level debugging UART"
1036 depends on !ARCH_MULTIPLATFORM
1038 Say Y here if your platform doesn't provide a UART option
1039 above. This relies on your platform choosing the right UART
1040 definition internally in order for low-level debugging to
1044 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
1046 Say Y here if you want the debug print routines to direct
1047 their output to the EmbeddedICE macrocell's DCC channel using
1048 co-processor 14. This is known to work on the ARM9 style ICE
1049 channel and on the XScale with the PEEDI.
1051 Note that the system will appear to hang during boot if there
1052 is nothing connected to read from the DCC.
1054 config DEBUG_SEMIHOSTING
1055 bool "Kernel low-level debug output via semihosting I/O"
1057 Semihosting enables code running on an ARM target to use
1058 the I/O facilities on a host debugger/emulator through a
1059 simple SVC call. The host debugger or emulator must have
1060 semihosting enabled for the special svc call to be trapped
1061 otherwise the kernel will crash.
1063 This is known to work with OpenOCD, as well as
1064 ARM's Fast Models, or any other controlling environment
1065 that implements semihosting.
1067 For more details about semihosting, please see
1068 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
1070 config DEBUG_LL_UART_8250
1071 bool "Kernel low-level debugging via 8250 UART"
1073 Say Y here if you wish the debug print routes to direct
1074 their output to an 8250 UART. You can use this option
1075 to provide the parameters for the 8250 UART rather than
1076 selecting one of the platform specific options above if
1077 you know the parameters for the port.
1079 This option is preferred over the platform specific
1080 options; the platform specific options are deprecated
1081 and will be soon removed.
1083 config DEBUG_LL_UART_EFM32
1084 bool "Kernel low-level debugging via efm32 UART"
1085 depends on ARCH_EFM32
1087 Say Y here if you want the debug print routines to direct
1088 their output to an UART or USART port on efm32 based
1089 machines. Use the following addresses for DEBUG_UART_PHYS:
1097 config DEBUG_LL_UART_PL01X
1098 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
1100 Say Y here if you wish the debug print routes to direct
1101 their output to a PL01x Primecell UART. You can use
1102 this option to provide the parameters for the UART
1103 rather than selecting one of the platform specific
1104 options above if you know the parameters for the port.
1106 This option is preferred over the platform specific
1107 options; the platform specific options are deprecated
1108 and will be soon removed.
1112 config DEBUG_EXYNOS_UART
1115 config DEBUG_S3C2410_UART
1117 select DEBUG_S3C24XX_UART
1119 config DEBUG_S3C24XX_UART
1122 config DEBUG_S5PV210_UART
1125 config DEBUG_OMAP2PLUS_UART
1127 depends on ARCH_OMAP2PLUS
1129 config DEBUG_IMX_UART_PORT
1130 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
1131 DEBUG_IMX25_UART || \
1132 DEBUG_IMX21_IMX27_UART || \
1133 DEBUG_IMX31_UART || \
1134 DEBUG_IMX35_UART || \
1135 DEBUG_IMX50_UART || \
1136 DEBUG_IMX51_UART || \
1137 DEBUG_IMX53_UART || \
1138 DEBUG_IMX6Q_UART || \
1139 DEBUG_IMX6SL_UART || \
1144 Choose UART port on which kernel low-level debug messages
1147 config DEBUG_VF_UART_PORT
1148 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1151 depends on SOC_VF610
1153 Choose UART port on which kernel low-level debug messages
1156 config DEBUG_TEGRA_UART
1158 depends on ARCH_TEGRA
1160 config DEBUG_STI_UART
1164 config DEBUG_LL_INCLUDE
1166 default "debug/sa1100.S" if DEBUG_SA1100
1167 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1168 default "debug/asm9260.S" if DEBUG_ASM9260_UART
1169 default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1170 default "debug/meson.S" if DEBUG_MESON_UARTAO
1171 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1172 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1173 default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1174 default "debug/icedcc.S" if DEBUG_ICEDCC
1175 default "debug/imx.S" if DEBUG_IMX1_UART || \
1176 DEBUG_IMX25_UART || \
1177 DEBUG_IMX21_IMX27_UART || \
1178 DEBUG_IMX31_UART || \
1179 DEBUG_IMX35_UART || \
1180 DEBUG_IMX50_UART || \
1181 DEBUG_IMX51_UART || \
1182 DEBUG_IMX53_UART ||\
1183 DEBUG_IMX6Q_UART || \
1184 DEBUG_IMX6SL_UART || \
1186 default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
1187 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1188 default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
1189 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
1190 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF2
1191 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF0
1192 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF2
1193 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA0
1194 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA1
1195 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
1196 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1197 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1198 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
1199 default "debug/sti.S" if DEBUG_STI_UART
1200 default "debug/tegra.S" if DEBUG_TEGRA_UART
1201 default "debug/ux500.S" if DEBUG_UX500_UART
1202 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1203 default "debug/vf.S" if DEBUG_VF_UART
1204 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1205 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1206 default "debug/bcm63xx.S" if DEBUG_UART_BCM63XX
1207 default "mach/debug-macro.S"
1209 # Compatibility options for PL01x
1210 config DEBUG_UART_PL01X
1211 def_bool ARCH_EP93XX || \
1212 ARCH_INTEGRATOR || \
1218 # Compatibility options for 8250
1219 config DEBUG_UART_8250
1220 def_bool ARCH_DOVE || ARCH_EBSA110 || \
1221 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1222 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1223 ARCH_IOP33X || ARCH_IXP4XX || \
1224 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1226 # Compatibility options for BCM63xx
1227 config DEBUG_UART_BCM63XX
1228 def_bool ARCH_BCM_63XX
1230 config DEBUG_UART_PHYS
1231 hex "Physical base address of debug UART"
1232 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1233 default 0x01c28000 if DEBUG_SUNXI_UART0
1234 default 0x01c28400 if DEBUG_SUNXI_UART1
1235 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1236 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1237 default 0x01f02800 if DEBUG_SUNXI_R_UART
1238 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1239 default 0x02531000 if DEBUG_KEYSTONE_UART1
1240 default 0x03010fe0 if ARCH_RPC
1241 default 0x07000000 if DEBUG_SUN9I_UART0
1242 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
1243 DEBUG_VEXPRESS_UART0_CA9
1244 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1245 default 0x10124000 if DEBUG_RK3X_UART0
1246 default 0x10126000 if DEBUG_RK3X_UART1
1247 default 0x101f1000 if ARCH_VERSATILE
1248 default 0x101fb000 if DEBUG_NOMADIK_UART
1249 default 0x11002000 if DEBUG_MT8127_UART0
1250 default 0x11006000 if DEBUG_MT6589_UART0
1251 default 0x11009000 if DEBUG_MT8135_UART3
1252 default 0x16000000 if ARCH_INTEGRATOR
1253 default 0x18000300 if DEBUG_BCM_5301X
1254 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1255 default 0x20060000 if DEBUG_RK29_UART0
1256 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1257 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1258 default 0x20201000 if DEBUG_BCM2835
1259 default 0x3e000000 if DEBUG_BCM_KONA_UART
1260 default 0x4000e400 if DEBUG_LL_UART_EFM32
1261 default 0x40090000 if ARCH_LPC32XX
1262 default 0x40100000 if DEBUG_PXA_UART1
1263 default 0x42000000 if ARCH_GEMINI
1264 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1265 DEBUG_S3C2410_UART0)
1266 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1267 DEBUG_S3C2410_UART1)
1268 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1269 DEBUG_S3C2410_UART2)
1270 default 0x78000000 if DEBUG_CNS3XXX
1271 default 0x7c0003f8 if FOOTBRIDGE
1272 default 0x78000000 if DEBUG_CNS3XXX
1273 default 0x80010000 if DEBUG_ASM9260_UART
1274 default 0x80070000 if DEBUG_IMX23_UART
1275 default 0x80074000 if DEBUG_IMX28_UART
1276 default 0x80230000 if DEBUG_PICOXCELL_UART
1277 default 0x808c0000 if ARCH_EP93XX
1278 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1279 default 0xa9a00000 if DEBUG_MSM_UART
1280 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1281 default 0xc0013000 if DEBUG_U300_UART
1282 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1283 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1284 default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1285 default 0xd0012000 if DEBUG_MVEBU_UART
1286 default 0xc81004c0 if DEBUG_MESON_UARTAO
1287 default 0xd4017000 if DEBUG_MMP_UART2
1288 default 0xd4018000 if DEBUG_MMP_UART3
1289 default 0xe0000000 if ARCH_SPEAR13XX
1290 default 0xe4007000 if DEBUG_HIP04_UART
1291 default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
1292 default 0xe6c50000 if DEBUG_RMOBILE_SCIFA1
1293 default 0xe6c80000 if DEBUG_RMOBILE_SCIFA4
1294 default 0xe6e58000 if DEBUG_RCAR_GEN2_SCIF2
1295 default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
1296 default 0xe8008000 if DEBUG_R7S72100_SCIF2
1297 default 0xf0000be0 if ARCH_EBSA110
1298 default 0xf040ab00 if DEBUG_BRCMSTB_UART
1299 default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE
1300 default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
1302 default 0xf7fc9000 if DEBUG_BERLIN_UART
1303 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1304 default 0xf991e000 if DEBUG_QCOM_UARTDM
1305 default 0xfcb00000 if DEBUG_HI3620_UART
1306 default 0xfe800000 if ARCH_IOP32X
1307 default 0xff690000 if DEBUG_RK32_UART2
1308 default 0xffc02000 if DEBUG_SOCFPGA_UART
1309 default 0xffd82340 if ARCH_IOP13XX
1310 default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
1311 default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
1312 default 0xfff36000 if DEBUG_HIGHBANK_UART
1313 default 0xfffe8600 if DEBUG_UART_BCM63XX
1314 default 0xfffff700 if ARCH_IOP33X
1315 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1316 DEBUG_LL_UART_EFM32 || \
1317 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1318 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
1319 DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
1320 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
1321 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
1322 DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
1323 DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART
1325 config DEBUG_UART_VIRT
1326 hex "Virtual base address of debug UART"
1327 default 0xe0010fe0 if ARCH_RPC
1328 default 0xe1000000 if DEBUG_MSM_UART
1329 default 0xf0000be0 if ARCH_EBSA110
1330 default 0xf0010000 if DEBUG_ASM9260_UART
1331 default 0xf01fb000 if DEBUG_NOMADIK_UART
1332 default 0xf0201000 if DEBUG_BCM2835
1333 default 0xf1000300 if DEBUG_BCM_5301X
1334 default 0xf1002000 if DEBUG_MT8127_UART0
1335 default 0xf1006000 if DEBUG_MT6589_UART0
1336 default 0xf1009000 if DEBUG_MT8135_UART3
1337 default 0xf11f1000 if ARCH_VERSATILE
1338 default 0xf1600000 if ARCH_INTEGRATOR
1339 default 0xf1c28000 if DEBUG_SUNXI_UART0
1340 default 0xf1c28400 if DEBUG_SUNXI_UART1
1341 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1342 default 0xf6200000 if DEBUG_PXA_UART1
1343 default 0xf4090000 if ARCH_LPC32XX
1344 default 0xf4200000 if ARCH_GEMINI
1345 default 0xf7000000 if DEBUG_SUN9I_UART0
1346 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1347 DEBUG_S3C2410_UART0)
1348 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1349 DEBUG_S3C2410_UART1)
1350 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1351 DEBUG_S3C2410_UART2)
1352 default 0xf7fc9000 if DEBUG_BERLIN_UART
1353 default 0xf8007000 if DEBUG_HIP04_UART
1354 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1355 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1356 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1357 default 0xfb002000 if DEBUG_CNS3XXX
1358 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1359 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1360 default 0xfc40ab00 if DEBUG_BRCMSTB_UART
1361 default 0xfcfe8600 if DEBUG_UART_BCM63XX
1362 default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1363 default 0xfd000000 if ARCH_SPEAR13XX
1364 default 0xfd012000 if ARCH_MV78XX0
1365 default 0xfde12000 if ARCH_DOVE
1366 default 0xfe012000 if ARCH_ORION5X
1367 default 0xf31004c0 if DEBUG_MESON_UARTAO
1368 default 0xfe017000 if DEBUG_MMP_UART2
1369 default 0xfe018000 if DEBUG_MMP_UART3
1370 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1371 default 0xfe230000 if DEBUG_PICOXCELL_UART
1372 default 0xfe300000 if DEBUG_BCM_KONA_UART
1373 default 0xfe800000 if ARCH_IOP32X
1374 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1375 default 0xfeb24000 if DEBUG_RK3X_UART0
1376 default 0xfeb26000 if DEBUG_RK3X_UART1
1377 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1378 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1379 default 0xfec02000 if DEBUG_SOCFPGA_UART
1380 default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
1381 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1382 default 0xfec90000 if DEBUG_RK32_UART2
1383 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1384 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1385 default 0xfed60000 if DEBUG_RK29_UART0
1386 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1387 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1388 default 0xfedc0000 if ARCH_EP93XX
1389 default 0xfee003f8 if FOOTBRIDGE
1390 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1391 default 0xfee82340 if ARCH_IOP13XX
1392 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1393 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1394 default 0xfef36000 if DEBUG_HIGHBANK_UART
1395 default 0xfefff700 if ARCH_IOP33X
1396 default 0xff003000 if DEBUG_U300_UART
1397 default DEBUG_UART_PHYS if !MMU
1398 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1399 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1400 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
1401 DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART
1403 config DEBUG_UART_8250_SHIFT
1404 int "Register offset shift for the 8250 debug UART"
1405 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1406 default 0 if FOOTBRIDGE || ARCH_IOP32X || DEBUG_BCM_5301X
1409 config DEBUG_UART_8250_WORD
1410 bool "Use 32-bit accesses for 8250 UART"
1411 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1412 depends on DEBUG_UART_8250_SHIFT >= 2
1413 default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1415 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1416 DEBUG_DAVINCI_DA8XX_UART2 || \
1417 DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \
1420 config DEBUG_UART_8250_FLOW_CONTROL
1421 bool "Enable flow control for 8250 UART"
1422 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1423 default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1425 config DEBUG_UNCOMPRESS
1427 depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG
1428 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1429 (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1431 This option influences the normal decompressor output for
1432 multiplatform kernels. Normally, multiplatform kernels disable
1433 decompressor output because it is not possible to know where to
1434 send the decompressor output.
1436 When this option is set, the selected DEBUG_LL output method
1437 will be re-used for normal decompressor output on multiplatform
1441 config UNCOMPRESS_INCLUDE
1443 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1444 PLAT_SAMSUNG || ARCH_EFM32
1445 default "mach/uncompress.h"
1451 Say Y here if you want to have an early console using the
1452 kernel low-level debugging functions. Add earlyprintk to your
1453 kernel parameters to enable this console.
1455 config ARM_KPROBES_TEST
1456 tristate "Kprobes test module"
1457 depends on KPROBES && MODULES
1459 Perform tests of kprobes API and instruction set simulation.
1461 config PID_IN_CONTEXTIDR
1462 bool "Write the current PID to the CONTEXTIDR register"
1463 depends on CPU_COPY_V6
1465 Enabling this option causes the kernel to write the current PID to
1466 the PROCID field of the CONTEXTIDR register, at the expense of some
1467 additional instructions during context switch. Say Y here only if you
1468 are planning to use hardware trace tools with this kernel.
1470 config DEBUG_SET_MODULE_RONX
1471 bool "Set loadable kernel module data as NX and text as RO"
1474 This option helps catch unintended modifications to loadable
1475 kernel module's text and read-only data. It also prevents execution
1476 of module data. Such protection may interfere with run-time code
1477 patching and dynamic kernel tracing - and they might also protect
1478 against certain classes of kernel exploits.
1479 If in doubt, say "N".
1481 menuconfig CORESIGHT
1482 bool "CoreSight Tracing Support"
1485 This framework provides a kernel interface for the CoreSight debug
1486 and trace drivers to register themselves with. It's intended to build
1487 a topological view of the CoreSight components based on a DT
1488 specification and configure the right serie of components when a
1489 trace source gets enabled.
1492 config CORESIGHT_LINKS_AND_SINKS
1493 bool "CoreSight Link and Sink drivers"
1495 This enables support for CoreSight link and sink drivers that are
1496 responsible for transporting and collecting the trace data
1497 respectively. Link and sinks are dynamically aggregated with a trace
1498 entity at run time to form a complete trace path.
1500 config CORESIGHT_LINK_AND_SINK_TMC
1501 bool "Coresight generic TMC driver"
1502 depends on CORESIGHT_LINKS_AND_SINKS
1504 This enables support for the Trace Memory Controller driver. Depending
1505 on its configuration the device can act as a link (embedded trace router
1506 - ETR) or sink (embedded trace FIFO). The driver complies with the
1507 generic implementation of the component without special enhancement or
1510 config CORESIGHT_SINK_TPIU
1511 bool "Coresight generic TPIU driver"
1512 depends on CORESIGHT_LINKS_AND_SINKS
1514 This enables support for the Trace Port Interface Unit driver, responsible
1515 for bridging the gap between the on-chip coresight components and a trace
1516 port collection engine, typically connected to an external host for use
1517 case capturing more traces than the on-board coresight memory can handle.
1519 config CORESIGHT_SINK_ETBV10
1520 bool "Coresight ETBv1.0 driver"
1521 depends on CORESIGHT_LINKS_AND_SINKS
1523 This enables support for the Embedded Trace Buffer version 1.0 driver
1524 that complies with the generic implementation of the component without
1525 special enhancement or added features.
1527 config CORESIGHT_SOURCE_ETM3X
1528 bool "CoreSight Embedded Trace Macrocell 3.x driver"
1529 select CORESIGHT_LINKS_AND_SINKS
1531 This driver provides support for processor ETM3.x and PTM1.x modules,
1532 which allows tracing the instructions that a processor is executing
1533 This is primarily useful for instruction level tracing. Depending
1534 the ETM version data tracing may also be available.