1 # SPDX-License-Identifier: GPL-2.0
6 config ARM_PTDUMP_DEBUGFS
7 bool "Export kernel pagetable layout to userspace via debugfs"
8 depends on DEBUG_KERNEL
10 select ARM_PTDUMP_CORE
13 Say Y here if you want to show the kernel pagetable layout in a
14 debugfs file. This information is only useful for kernel developers
15 who are working in architecture specific areas of the kernel.
16 It is probably not a good idea to enable this feature in a production
21 bool "Warn on W+X mappings at boot"
23 select ARM_PTDUMP_CORE
25 Generate a warning if any W+X mappings are found at boot.
27 This is useful for discovering cases where the kernel is leaving
28 W+X mappings after applying NX, as such mappings are a security risk.
30 Look for a message in dmesg output like this:
32 arm/mm: Checked W+X mappings: passed, no W+X pages found.
34 or like this, if the check failed:
36 arm/mm: Checked W+X mappings: FAILED, <N> W+X pages found.
38 Note that even if the check fails, your kernel is possibly
39 still fine, as W+X mappings are not a security hole in
40 themselves, what they do is that they make the exploitation
41 of other unfixed kernel bugs easier.
43 There is no runtime or memory usage effect of this option
44 once the kernel has booted up - it's a one time check.
49 prompt "Choose kernel unwinder"
50 default UNWINDER_ARM if AEABI
51 default UNWINDER_FRAME_POINTER if !AEABI
53 This determines which method will be used for unwinding kernel stack
54 traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,
55 livepatch, lockdep, and more.
57 config UNWINDER_FRAME_POINTER
58 bool "Frame pointer unwinder"
59 depends on !THUMB2_KERNEL
60 select ARCH_WANT_FRAME_POINTERS
63 This option enables the frame pointer unwinder for unwinding
67 bool "ARM EABI stack unwinder"
71 This option enables stack unwinding support in the kernel
72 using the information automatically generated by the
73 compiler. The resulting kernel image is slightly bigger but
74 the performance is not affected. Currently, this feature
75 only works with EABI compilers.
82 config BACKTRACE_VERBOSE
83 bool "Verbose backtrace"
86 When the kernel produces a warning or oops, the kernel prints a
87 trace of the call chain. This option controls whether we include
88 the numeric addresses or only include the symbolic information.
90 In most cases, say N here, unless you are intending to debug the
91 kernel and have access to the kernel binary image.
97 bool "Verbose user fault messages"
99 When a user program crashes due to an exception, the kernel can
100 print a brief message explaining what the problem was. This is
101 sometimes helpful for debugging but serves no purpose on a
102 production system. Most people should say N here.
104 In addition, you need to pass user_debug=N on the kernel command
105 line to enable this feature. N consists of the sum of:
107 1 - undefined instruction events
109 4 - invalid data aborts
113 # These options are only for real kernel hackers who want to get their hands dirty.
115 bool "Kernel low-level debugging functions (read help!)"
116 depends on DEBUG_KERNEL
118 Say Y here to include definitions of printascii, printch, printhex
119 in the kernel. This is helpful if you are debugging code that
120 executes before the console is initialized.
122 Note that selecting this option will limit the kernel to a single
123 UART definition, as specified below. Attempting to boot the kernel
124 image on a different platform *will not work*, so this option should
125 not be enabled for kernels that are intended to be portable.
128 prompt "Kernel low-level debugging port"
131 config DEBUG_ALPINE_UART0
132 bool "Kernel low-level debugging messages via Alpine UART0"
133 depends on ARCH_ALPINE
134 select DEBUG_UART_8250
136 Say Y here if you want kernel low-level debugging support
137 on Alpine based platforms.
139 config DEBUG_ASM9260_UART
140 bool "Kernel low-level debugging via asm9260 UART"
141 depends on MACH_ASM9260
143 Say Y here if you want the debug print routines to direct
144 their output to an UART or USART port on asm9260 based
147 DEBUG_UART_PHYS | DEBUG_UART_VIRT
149 0x80000000 | 0xf0000000 | UART0
150 0x80004000 | 0xf0004000 | UART1
151 0x80008000 | 0xf0008000 | UART2
152 0x8000c000 | 0xf000c000 | UART3
153 0x80010000 | 0xf0010000 | UART4
154 0x80014000 | 0xf0014000 | UART5
155 0x80018000 | 0xf0018000 | UART6
156 0x8001c000 | 0xf001c000 | UART7
157 0x80020000 | 0xf0020000 | UART8
158 0x80024000 | 0xf0024000 | UART9
160 config DEBUG_AT91_RM9200_DBGU
161 bool "Kernel low-level debugging on AT91RM9200, AT91SAM9, SAM9X60 DBGU"
162 select DEBUG_AT91_UART
163 depends on SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAM9X60
165 Say Y here if you want kernel low-level debugging support
167 at91rm9200, at91sam9260, at91sam9g20, at91sam9261,
168 at91sam9g10, at91sam9n12, at91sam9rl64, at91sam9x5, sam9x60
170 config DEBUG_AT91_SAM9263_DBGU
171 bool "Kernel low-level debugging on AT91SAM{9263,9G45,A5D3} DBGU"
172 select DEBUG_AT91_UART
173 depends on SOC_AT91SAM9 || SOC_SAMA5D3
175 Say Y here if you want kernel low-level debugging support
177 at91sam9263, at91sam9g45, at91sam9m10,
180 config DEBUG_AT91_SAMA5D2_UART1
181 bool "Kernel low-level debugging on SAMA5D2 UART1"
182 select DEBUG_AT91_UART
183 depends on SOC_SAMA5D2
185 Say Y here if you want kernel low-level debugging support
186 on the UART1 port of sama5d2.
188 config DEBUG_AT91_SAMA5D4_USART3
189 bool "Kernel low-level debugging on SAMA5D4 USART3"
190 select DEBUG_AT91_UART
191 depends on SOC_SAMA5D4
193 Say Y here if you want kernel low-level debugging support
194 on the USART3 port of sama5d4.
196 config DEBUG_AT91_SAMV7_USART1
197 bool "Kernel low-level debugging via SAMV7 USART1"
198 select DEBUG_AT91_UART
201 Say Y here if you want the debug print routines to direct
202 their output to the USART1 port on SAMV7 based
205 config DEBUG_AT91_SAMA7G5_FLEXCOM3
206 bool "Kernel low-level debugging on SAMA7G5 FLEXCOM3"
207 select DEBUG_AT91_UART
208 depends on SOC_SAMA7G5
210 Say Y here if you want kernel low-level debugging support
211 on the FLEXCOM3 port of SAMA7G5.
213 config DEBUG_AT91_LAN966_FLEXCOM
214 bool "Kernel low-level debugging on LAN966 FLEXCOM USART"
215 select DEBUG_AT91_UART
216 depends on SOC_LAN966
218 Say Y here if you want kernel low-level debugging support
219 on the FLEXCOM port of LAN966.
221 DEBUG_UART_PHYS | DEBUG_UART_VIRT
223 0xe0040200 | 0xfd040200 | FLEXCOM0
224 0xe0044200 | 0xfd044200 | FLEXCOM1
225 0xe0060200 | 0xfd060200 | FLEXCOM2
226 0xe0064200 | 0xfd064200 | FLEXCOM3
227 0xe0070200 | 0xfd070200 | FLEXCOM4
229 By default, enabling FLEXCOM3 port. Based on requirement, use
230 DEBUG_UART_PHYS and DEBUG_UART_VIRT configurations from above
234 bool "Kernel low-level debugging on BCM2835 PL011 UART"
235 depends on ARCH_BCM2835 && ARCH_MULTI_V6
236 select DEBUG_UART_PL01X
239 bool "Kernel low-level debugging on BCM2836 PL011 UART"
240 depends on ARCH_BCM2835 && ARCH_MULTI_V7
241 select DEBUG_UART_PL01X
243 config DEBUG_BCM_5301X
244 bool "Kernel low-level debugging on BCM5301X/NSP UART1"
245 depends on ARCH_BCM_5301X || ARCH_BCM_NSP
246 select DEBUG_UART_8250
249 bool "Kernel low-level debugging on Hurricane 2 UART2"
250 depends on ARCH_BCM_HR2
251 select DEBUG_UART_8250
253 config DEBUG_BCM_IPROC_UART3
254 bool "Kernel low-level debugging on BCM IPROC UART3"
255 depends on ARCH_BCM_CYGNUS
256 select DEBUG_UART_8250
258 Say Y here if you want the debug print routines to direct
259 their output to the third serial port on these devices.
261 config DEBUG_BCM_KONA_UART
262 bool "Kernel low-level debugging messages via BCM KONA UART"
263 depends on ARCH_BCM_MOBILE
264 select DEBUG_UART_8250
266 Say Y here if you want kernel low-level debugging support
267 on Broadcom SoC platforms.
268 This low level debug works for Broadcom
269 mobile SoCs in the Kona family of chips (e.g. bcm28155,
272 config DEBUG_BCM63XX_UART
273 bool "Kernel low-level debugging on BCM63XX UART"
274 depends on ARCH_BCMBCA
276 config DEBUG_BERLIN_UART
277 bool "Marvell Berlin SoC Debug UART"
278 depends on ARCH_BERLIN
279 select DEBUG_UART_8250
281 Say Y here if you want kernel low-level debugging support
282 on Marvell Berlin SoC based platforms.
284 config DEBUG_BRCMSTB_UART
285 bool "Use BRCMSTB UART for low-level debug"
286 depends on ARCH_BRCMSTB
288 Say Y here if you want the debug print routines to direct
289 their output to the first serial port on these devices. The
290 UART physical and virtual address is automatically provided
291 based on the chip identification register value.
293 If you have a Broadcom STB chip and would like early print
294 messages to appear over the UART, select this option.
296 config DEBUG_CLPS711X_UART1
297 bool "Kernel low-level debugging messages via UART1"
298 depends on ARCH_CLPS711X
300 Say Y here if you want the debug print routines to direct
301 their output to the first serial port on these devices.
303 config DEBUG_CLPS711X_UART2
304 bool "Kernel low-level debugging messages via UART2"
305 depends on ARCH_CLPS711X
307 Say Y here if you want the debug print routines to direct
308 their output to the second serial port on these devices.
310 config DEBUG_DAVINCI_DA8XX_UART1
311 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
312 depends on ARCH_DAVINCI_DA8XX
313 select DEBUG_UART_8250
315 Say Y here if you want the debug print routines to direct
316 their output to UART1 serial port on DaVinci DA8XX devices.
318 config DEBUG_DAVINCI_DA8XX_UART2
319 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
320 depends on ARCH_DAVINCI_DA8XX
321 select DEBUG_UART_8250
323 Say Y here if you want the debug print routines to direct
324 their output to UART2 serial port on DaVinci DA8XX devices.
326 config DEBUG_DC21285_PORT
327 bool "Kernel low-level debugging messages via footbridge serial port"
328 depends on FOOTBRIDGE
330 Say Y here if you want the debug print routines to direct
331 their output to the serial port in the DC21285 (Footbridge).
333 config DEBUG_DIGICOLOR_UA0
334 bool "Kernel low-level debugging messages via Digicolor UA0"
335 depends on ARCH_DIGICOLOR
337 Say Y here if you want the debug print routines to direct
338 their output to the UA0 serial port in the CX92755.
341 bool "Kernel low-level debugging messages via ep93xx UART"
342 depends on ARCH_EP93XX
343 select DEBUG_UART_PL01X
345 Say Y here if you want kernel low-level debugging support
346 on Cirrus Logic EP93xx based platforms.
348 config DEBUG_FOOTBRIDGE_COM1
349 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
350 depends on FOOTBRIDGE
351 select DEBUG_UART_8250
353 Say Y here if you want the debug print routines to direct
354 their output to the 8250 at PCI COM1.
357 bool "Kernel low-level debugging messages via Cortina Systems Gemini UART"
358 depends on ARCH_GEMINI
359 select DEBUG_UART_8250
361 Say Y here if you want kernel low-level debugging support
362 on Cortina Gemini based platforms.
364 config DEBUG_HI3620_UART
365 bool "Hisilicon HI3620 Debug UART"
366 depends on ARCH_HI3xxx
367 select DEBUG_UART_PL01X
369 Say Y here if you want kernel low-level debugging support
372 config DEBUG_HIGHBANK_UART
373 bool "Kernel low-level debugging messages via Highbank UART"
374 depends on ARCH_HIGHBANK
375 select DEBUG_UART_PL01X
377 Say Y here if you want the debug print routines to direct
378 their output to the UART on Highbank based devices.
380 config DEBUG_HIP01_UART
381 bool "Hisilicon Hip01 Debug UART"
382 depends on ARCH_HIP01
383 select DEBUG_UART_8250
385 Say Y here if you want kernel low-level debugging support
388 config DEBUG_HIP04_UART
389 bool "Hisilicon HiP04 Debug UART"
390 depends on ARCH_HIP04
391 select DEBUG_UART_8250
393 Say Y here if you want kernel low-level debugging support
396 config DEBUG_HIX5HD2_UART
397 bool "Hisilicon Hix5hd2 Debug UART"
398 depends on ARCH_HIX5HD2
399 select DEBUG_UART_PL01X
401 Say Y here if you want kernel low-level debugging support
404 config DEBUG_IMX1_UART
405 bool "i.MX1 Debug UART"
408 Say Y here if you want kernel low-level debugging support
411 config DEBUG_IMX23_UART
412 bool "i.MX23 Debug UART"
414 select DEBUG_UART_PL01X
416 Say Y here if you want kernel low-level debugging support
419 config DEBUG_IMX25_UART
420 bool "i.MX25 Debug UART"
423 Say Y here if you want kernel low-level debugging support
426 config DEBUG_IMX27_UART
427 bool "i.MX27 Debug UART"
430 Say Y here if you want kernel low-level debugging support
433 config DEBUG_IMX28_UART
434 bool "i.MX28 Debug UART"
436 select DEBUG_UART_PL01X
438 Say Y here if you want kernel low-level debugging support
441 config DEBUG_IMX31_UART
442 bool "i.MX31 Debug UART"
445 Say Y here if you want kernel low-level debugging support
448 config DEBUG_IMX35_UART
449 bool "i.MX35 Debug UART"
452 Say Y here if you want kernel low-level debugging support
455 config DEBUG_IMX50_UART
456 bool "i.MX50 Debug UART"
459 Say Y here if you want kernel low-level debugging support
462 config DEBUG_IMX51_UART
463 bool "i.MX51 Debug UART"
466 Say Y here if you want kernel low-level debugging support
469 config DEBUG_IMX53_UART
470 bool "i.MX53 Debug UART"
473 Say Y here if you want kernel low-level debugging support
476 config DEBUG_IMX6Q_UART
477 bool "i.MX6Q/DL Debug UART"
480 Say Y here if you want kernel low-level debugging support
483 config DEBUG_IMX6SL_UART
484 bool "i.MX6SL Debug UART"
485 depends on SOC_IMX6SL
487 Say Y here if you want kernel low-level debugging support
490 config DEBUG_IMX6SX_UART
491 bool "i.MX6SX Debug UART"
492 depends on SOC_IMX6SX
494 Say Y here if you want kernel low-level debugging support
497 config DEBUG_IMX6UL_UART
498 bool "i.MX6UL Debug UART"
499 depends on SOC_IMX6UL
501 Say Y here if you want kernel low-level debugging support
504 config DEBUG_IMX7D_UART
505 bool "i.MX7D Debug UART"
508 Say Y here if you want kernel low-level debugging support
511 config DEBUG_INTEGRATOR
512 bool "Kernel low-level debugging messages via ARM Integrator UART"
513 depends on ARCH_INTEGRATOR
514 select DEBUG_UART_PL01X
516 Say Y here if you want kernel low-level debugging support
517 on ARM Integrator platforms.
519 config DEBUG_KEYSTONE_UART0
520 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
521 depends on ARCH_KEYSTONE
522 select DEBUG_UART_8250
524 Say Y here if you want the debug print routines to direct
525 their output to UART0 serial port on KEYSTONE2 devices.
527 config DEBUG_KEYSTONE_UART1
528 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
529 depends on ARCH_KEYSTONE
530 select DEBUG_UART_8250
532 Say Y here if you want the debug print routines to direct
533 their output to UART1 serial port on KEYSTONE2 devices.
535 config DEBUG_LPC18XX_UART0
536 bool "Kernel low-level debugging via LPC18xx/43xx UART0"
537 depends on ARCH_LPC18XX
538 select DEBUG_UART_8250
540 Say Y here if you want kernel low-level debugging support
541 on NXP LPC18xx/43xx UART0.
544 bool "Kernel low-level debugging messages via NXP LPC32xx UART"
545 depends on ARCH_LPC32XX
546 select DEBUG_UART_8250
548 Say Y here if you want kernel low-level debugging support
549 on NXP LPC32xx based platforms.
551 config DEBUG_MESON_UARTAO
552 bool "Kernel low-level debugging via Meson6 UARTAO"
553 depends on ARCH_MESON
555 Say Y here if you want kernel low-lever debugging support
556 on Amlogic Meson6 based platforms on the UARTAO.
558 config DEBUG_MMP_UART2
559 bool "Kernel low-level debugging message via MMP UART2"
561 select DEBUG_UART_8250
563 Say Y here if you want kernel low-level debugging support
566 config DEBUG_MMP_UART3
567 bool "Kernel low-level debugging message via MMP UART3"
569 select DEBUG_UART_8250
571 Say Y here if you want kernel low-level debugging support
574 config DEBUG_MVEBU_UART0
575 bool "Kernel low-level debugging messages via MVEBU UART0 (old bootloaders)"
576 depends on ARCH_MVEBU
577 depends on ARCH_MVEBU && CPU_V7
578 select DEBUG_UART_8250
580 Say Y here if you want kernel low-level debugging support
581 on MVEBU based platforms on UART0.
583 This option should be used with the old bootloaders
584 that left the internal registers mapped at
585 0xd0000000. As of today, this is the case on
586 platforms such as the Globalscale Mirabox or the
587 Plathome OpenBlocks AX3, when using the original
590 This option will not work on older Marvell platforms
591 (Kirkwood, Dove, MV78xx0, Orion5x), which should pick
592 the "new bootloader" variant.
594 If the wrong DEBUG_MVEBU_UART* option is selected,
595 when u-boot hands over to the kernel, the system
596 silently crashes, with no serial output at all.
598 config DEBUG_MVEBU_UART0_ALTERNATE
599 bool "Kernel low-level debugging messages via MVEBU UART0 (new bootloaders)"
600 depends on ARCH_MVEBU || ARCH_DOVE || ARCH_MV78XX0 || ARCH_ORION5X
601 select DEBUG_UART_8250
603 Say Y here if you want kernel low-level debugging support
604 on MVEBU based platforms on UART0. (Armada XP, Armada 3xx,
605 Kirkwood, Dove, MV78xx0, Orion5x).
608 This option should be used with the new bootloaders
609 that remap the internal registers at 0xf1000000.
611 If the wrong DEBUG_MVEBU_UART* option is selected,
612 when u-boot hands over to the kernel, the system
613 silently crashes, with no serial output at all.
615 config DEBUG_MVEBU_UART1_ALTERNATE
616 bool "Kernel low-level debugging messages via MVEBU UART1 (new bootloaders)"
617 depends on ARCH_MVEBU
618 select DEBUG_UART_8250
620 Say Y here if you want kernel low-level debugging support
621 on MVEBU based platforms on UART1. (Armada XP, Armada 3xx,
622 Kirkwood, Dove, MV78xx0, Orion5x).
624 This option should be used with the new bootloaders
625 that remap the internal registers at 0xf1000000.
626 All of the older (pre Armada XP/370) platforms also use
627 this address, regardless of the boot loader version.
629 If the wrong DEBUG_MVEBU_UART* option is selected,
630 when u-boot hands over to the kernel, the system
631 silently crashes, with no serial output at all.
633 config DEBUG_MSTARV7_PMUART
634 bool "Kernel low-level debugging messages via MSTARV7 PM UART"
635 depends on ARCH_MSTARV7
636 select DEBUG_UART_8250
638 Say Y here if you want kernel low-level debugging support
639 for MSTAR ARMv7-based platforms on PM UART.
641 config DEBUG_MT6589_UART0
642 bool "Mediatek mt6589 UART0"
643 depends on ARCH_MEDIATEK
644 select DEBUG_UART_8250
646 Say Y here if you want kernel low-level debugging support
647 for Mediatek mt6589 based platforms on UART0.
649 config DEBUG_MT8127_UART0
650 bool "Mediatek mt8127/mt6592 UART0"
651 depends on ARCH_MEDIATEK
652 select DEBUG_UART_8250
654 Say Y here if you want kernel low-level debugging support
655 for Mediatek mt8127 based platforms on UART0.
657 config DEBUG_MT8135_UART3
658 bool "Mediatek mt8135 UART3"
659 depends on ARCH_MEDIATEK
660 select DEBUG_UART_8250
662 Say Y here if you want kernel low-level debugging support
663 for Mediatek mt8135 based platforms on UART3.
665 config DEBUG_NOMADIK_UART
666 bool "Kernel low-level debugging messages via NOMADIK UART"
667 depends on ARCH_NOMADIK
668 select DEBUG_UART_PL01X
670 Say Y here if you want kernel low-level debugging support
671 on NOMADIK based platforms.
673 config DEBUG_NSPIRE_CLASSIC_UART
674 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
675 depends on ARCH_NSPIRE
676 select DEBUG_UART_8250
678 Say Y here if you want kernel low-level debugging support
679 on TI-NSPIRE classic models.
681 config DEBUG_NSPIRE_CX_UART
682 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
683 depends on ARCH_NSPIRE
684 select DEBUG_UART_PL01X
686 Say Y here if you want kernel low-level debugging support
687 on TI-NSPIRE CX models.
689 config DEBUG_OMAP1UART1
690 bool "Kernel low-level debugging via OMAP1 UART1"
691 depends on ARCH_OMAP1
692 select DEBUG_UART_8250
694 Say Y here if you want kernel low-level debugging support
695 on OMAP1 based platforms (except OMAP730) on the UART1.
697 config DEBUG_OMAP1UART2
698 bool "Kernel low-level debugging via OMAP1 UART2"
699 depends on ARCH_OMAP1
700 select DEBUG_UART_8250
702 Say Y here if you want kernel low-level debugging support
703 on OMAP1 based platforms (except OMAP730) on the UART2.
705 config DEBUG_OMAP1UART3
706 bool "Kernel low-level debugging via OMAP1 UART3"
707 depends on ARCH_OMAP1
708 select DEBUG_UART_8250
710 Say Y here if you want kernel low-level debugging support
711 on OMAP1 based platforms (except OMAP730) on the UART3.
713 config DEBUG_OMAP2UART1
714 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
715 depends on ARCH_OMAP2PLUS
716 select DEBUG_UART_8250
718 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
719 omap3 torpedo and 3530 lv som.
721 config DEBUG_OMAP2UART2
722 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
723 depends on ARCH_OMAP2PLUS
724 select DEBUG_UART_8250
726 config DEBUG_OMAP2UART3
727 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
728 depends on ARCH_OMAP2PLUS
729 select DEBUG_UART_8250
731 config DEBUG_OMAP3UART3
732 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
733 depends on ARCH_OMAP2PLUS
734 select DEBUG_UART_8250
736 This covers at least cm_t3x, beagle, crane, devkit8000,
737 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
740 config DEBUG_OMAP4UART3
741 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
742 depends on ARCH_OMAP2PLUS
743 select DEBUG_UART_8250
745 config DEBUG_OMAP3UART4
746 bool "Kernel low-level debugging messages via OMAP36XX UART4"
747 depends on ARCH_OMAP2PLUS
748 select DEBUG_UART_8250
750 config DEBUG_OMAP4UART4
751 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
752 depends on ARCH_OMAP2PLUS
753 select DEBUG_UART_8250
755 config DEBUG_TI81XXUART1
756 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
757 depends on ARCH_OMAP2PLUS
758 select DEBUG_UART_8250
760 config DEBUG_TI81XXUART2
761 bool "Kernel low-level debugging messages via TI81XX UART2"
762 depends on ARCH_OMAP2PLUS
763 select DEBUG_UART_8250
765 config DEBUG_TI81XXUART3
766 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
767 depends on ARCH_OMAP2PLUS
768 select DEBUG_UART_8250
770 config DEBUG_AM33XXUART1
771 bool "Kernel low-level debugging messages via AM33XX UART1"
772 depends on ARCH_OMAP2PLUS
773 select DEBUG_UART_8250
775 config DEBUG_ZOOM_UART
776 bool "Kernel low-level debugging messages via Zoom2/3 UART"
777 depends on ARCH_OMAP2PLUS
778 select DEBUG_OMAP2PLUS_UART
780 config DEBUG_PXA_UART1
782 bool "Use PXA UART1 for low-level debug"
783 select DEBUG_UART_8250
785 Say Y here if you want kernel low-level debugging support
788 config DEBUG_QCOM_UARTDM
789 bool "Kernel low-level debugging messages via QCOM UARTDM"
792 Say Y here if you want the debug print routines to direct
793 their output to the serial port on Qualcomm devices.
795 ARCH DEBUG_UART_PHYS DEBUG_UART_VIRT
796 APQ8064 0x16640000 0xf0040000
797 APQ8084 0xf995e000 0xfa75e000
798 IPQ4019 0x078af000 0xf78af000
799 MSM8X60 0x19c40000 0xf0040000
800 MSM8960 0x16440000 0xf0040000
801 MSM8974 0xf991e000 0xfa71e000
803 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
804 options based on your needs.
806 config DEBUG_REALVIEW_STD_PORT
807 bool "RealView Default UART"
808 depends on ARCH_REALVIEW
809 select DEBUG_UART_PL01X
811 Say Y here if you want the debug print routines to direct
812 their output to the serial port on RealView EB, PB11MP, PBA8
815 config DEBUG_REALVIEW_PB1176_PORT
816 bool "RealView PB1176 UART"
817 depends on MACH_REALVIEW_PB1176
818 select DEBUG_UART_PL01X
820 Say Y here if you want the debug print routines to direct
821 their output to the standard serial port on the RealView
824 config DEBUG_RV1108_UART0
825 bool "Kernel low-level debugging messages via Rockchip RV1108 UART0"
826 depends on ARCH_ROCKCHIP
827 select DEBUG_UART_8250
829 Say Y here if you want kernel low-level debugging support
830 on Rockchip RV1108 based platforms.
832 config DEBUG_RV1108_UART1
833 bool "Kernel low-level debugging messages via Rockchip RV1108 UART1"
834 depends on ARCH_ROCKCHIP
835 select DEBUG_UART_8250
837 Say Y here if you want kernel low-level debugging support
838 on Rockchip RV1108 based platforms.
840 config DEBUG_RV1108_UART2
841 bool "Kernel low-level debugging messages via Rockchip RV1108 UART2"
842 depends on ARCH_ROCKCHIP
843 select DEBUG_UART_8250
845 Say Y here if you want kernel low-level debugging support
846 on Rockchip RV1108 based platforms.
848 config DEBUG_RK29_UART0
849 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
850 depends on ARCH_ROCKCHIP
851 select DEBUG_UART_8250
853 Say Y here if you want kernel low-level debugging support
854 on Rockchip based platforms.
856 config DEBUG_RK29_UART1
857 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
858 depends on ARCH_ROCKCHIP
859 select DEBUG_UART_8250
861 Say Y here if you want kernel low-level debugging support
862 on Rockchip based platforms.
864 config DEBUG_RK29_UART2
865 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
866 depends on ARCH_ROCKCHIP
867 select DEBUG_UART_8250
869 Say Y here if you want kernel low-level debugging support
870 on Rockchip based platforms.
872 config DEBUG_RK3X_UART0
873 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
874 depends on ARCH_ROCKCHIP
875 select DEBUG_UART_8250
877 Say Y here if you want kernel low-level debugging support
878 on Rockchip based platforms.
880 config DEBUG_RK3X_UART1
881 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
882 depends on ARCH_ROCKCHIP
883 select DEBUG_UART_8250
885 Say Y here if you want kernel low-level debugging support
886 on Rockchip based platforms.
888 config DEBUG_RK3X_UART2
889 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
890 depends on ARCH_ROCKCHIP
891 select DEBUG_UART_8250
893 Say Y here if you want kernel low-level debugging support
894 on Rockchip based platforms.
896 config DEBUG_RK3X_UART3
897 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
898 depends on ARCH_ROCKCHIP
899 select DEBUG_UART_8250
901 Say Y here if you want kernel low-level debugging support
902 on Rockchip based platforms.
904 config DEBUG_RK32_UART2
905 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
906 depends on ARCH_ROCKCHIP
907 select DEBUG_UART_8250
909 Say Y here if you want kernel low-level debugging support
910 on Rockchip RK32xx based platforms.
912 config DEBUG_R7S72100_SCIF2
913 bool "Kernel low-level debugging messages via SCIF2 on R7S72100"
914 depends on ARCH_R7S72100
916 Say Y here if you want kernel low-level debugging support
917 via SCIF2 on Renesas RZ/A1H (R7S72100).
919 config DEBUG_R7S9210_SCIF2
920 bool "Kernel low-level debugging messages via SCIF2 on R7S9210"
921 depends on ARCH_R7S9210
923 Say Y here if you want kernel low-level debugging support
924 via SCIF2 on Renesas RZ/A2M (R7S9210).
926 config DEBUG_R7S9210_SCIF4
927 bool "Kernel low-level debugging messages via SCIF4 on R7S9210"
928 depends on ARCH_R7S9210
930 Say Y here if you want kernel low-level debugging support
931 via SCIF4 on Renesas RZ/A2M (R7S9210).
933 config DEBUG_RCAR_GEN1_SCIF0
934 bool "Kernel low-level debugging messages via SCIF0 on R8A7778"
935 depends on ARCH_R8A7778
937 Say Y here if you want kernel low-level debugging support
938 via SCIF0 on Renesas R-Car M1A (R8A7778).
940 config DEBUG_RCAR_GEN1_SCIF2
941 bool "Kernel low-level debugging messages via SCIF2 on R8A7779"
942 depends on ARCH_R8A7779
944 Say Y here if you want kernel low-level debugging support
945 via SCIF2 on Renesas R-Car H1 (R8A7779).
947 config DEBUG_RCAR_GEN2_SCIF0
948 bool "Kernel low-level debugging messages via SCIF0 on R-Car Gen2 and RZ/G1"
949 depends on ARCH_R8A7743 || ARCH_R8A7744 || ARCH_R8A7790 || \
950 ARCH_R8A7791 || ARCH_R8A7792 || ARCH_R8A7793
952 Say Y here if you want kernel low-level debugging support
953 via SCIF0 on Renesas RZ/G1M (R8A7743), RZ/G1N (R8A7744),
954 R-Car H2 (R8A7790), M2-W (R8A7791), V2H (R8A7792), or
957 config DEBUG_RCAR_GEN2_SCIF1
958 bool "Kernel low-level debugging messages via SCIF1 on R8A77470"
959 depends on ARCH_R8A77470
961 Say Y here if you want kernel low-level debugging support
962 via SCIF1 on Renesas RZ/G1C (R8A77470).
964 config DEBUG_RCAR_GEN2_SCIF2
965 bool "Kernel low-level debugging messages via SCIF2 on R8A7794"
966 depends on ARCH_R8A7794
968 Say Y here if you want kernel low-level debugging support
969 via SCIF2 on Renesas R-Car E2 (R8A7794).
971 config DEBUG_RCAR_GEN2_SCIF4
972 bool "Kernel low-level debugging messages via SCIF4 on R8A7745"
973 depends on ARCH_R8A7745
975 Say Y here if you want kernel low-level debugging support
976 via SCIF4 on Renesas RZ/G1E (R8A7745).
978 config DEBUG_RCAR_GEN2_SCIFA2
979 bool "Kernel low-level debugging messages via SCIFA2 on R8A7742"
980 depends on ARCH_R8A7742
982 Say Y here if you want kernel low-level debugging support
983 via SCIFA2 on Renesas RZ/G1H (R8A7742).
985 config DEBUG_RMOBILE_SCIFA0
986 bool "Kernel low-level debugging messages via SCIFA0 on R8A73A4"
987 depends on ARCH_R8A73A4
989 Say Y here if you want kernel low-level debugging support
990 via SCIFA0 on Renesas R-Mobile APE6 (R8A73A4).
992 config DEBUG_RMOBILE_SCIFA1
993 bool "Kernel low-level debugging messages via SCIFA1 on R8A7740"
994 depends on ARCH_R8A7740
996 Say Y here if you want kernel low-level debugging support
997 via SCIFA1 on Renesas R-Mobile A1 (R8A7740).
999 config DEBUG_RMOBILE_SCIFA4
1000 bool "Kernel low-level debugging messages via SCIFA4 on SH73A0"
1001 depends on ARCH_SH73A0
1003 Say Y here if you want kernel low-level debugging support
1004 via SCIFA4 on Renesas SH-Mobile AG5 (SH73A0).
1006 config DEBUG_S3C_UART0
1007 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS
1008 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1009 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1010 select DEBUG_S5PV210_UART if ARCH_S5PV210
1011 bool "Use Samsung S3C UART 0 for low-level debug"
1013 Say Y here if you want the debug print routines to direct
1014 their output to UART 0. The port must have been initialised
1015 by the boot-loader before use.
1017 config DEBUG_S3C_UART1
1018 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS
1019 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1020 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1021 select DEBUG_S5PV210_UART if ARCH_S5PV210
1022 bool "Use Samsung S3C UART 1 for low-level debug"
1024 Say Y here if you want the debug print routines to direct
1025 their output to UART 1. The port must have been initialised
1026 by the boot-loader before use.
1028 config DEBUG_S3C_UART2
1029 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS
1030 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1031 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1032 select DEBUG_S5PV210_UART if ARCH_S5PV210
1033 bool "Use Samsung S3C UART 2 for low-level debug"
1035 Say Y here if you want the debug print routines to direct
1036 their output to UART 2. The port must have been initialised
1037 by the boot-loader before use.
1039 config DEBUG_S3C_UART3
1040 depends on ARCH_EXYNOS || ARCH_S5PV210
1041 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1042 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1043 select DEBUG_S5PV210_UART if ARCH_S5PV210
1044 bool "Use Samsung S3C UART 3 for low-level debug"
1046 Say Y here if you want the debug print routines to direct
1047 their output to UART 3. The port must have been initialised
1048 by the boot-loader before use.
1051 depends on ARCH_SA1100
1052 bool "Use SA1100 UARTs for low-level debug"
1054 Say Y here if you want kernel low-level debugging support
1055 on SA-11x0 UART ports. The kernel will check for the first
1056 enabled UART in a sequence 3-1-2.
1058 config DEBUG_SD5203_UART
1059 bool "Hisilicon SD5203 Debug UART"
1060 depends on ARCH_SD5203
1061 select DEBUG_UART_8250
1063 Say Y here if you want kernel low-level debugging support
1066 config DEBUG_SOCFPGA_UART0
1067 depends on ARCH_INTEL_SOCFPGA
1068 bool "Use SOCFPGA UART0 for low-level debug"
1069 select DEBUG_UART_8250
1071 Say Y here if you want kernel low-level debugging support
1072 on SOCFPGA(Cyclone 5 and Arria 5) based platforms.
1074 config DEBUG_SOCFPGA_ARRIA10_UART1
1075 depends on ARCH_INTEL_SOCFPGA
1076 bool "Use SOCFPGA Arria10 UART1 for low-level debug"
1077 select DEBUG_UART_8250
1079 Say Y here if you want kernel low-level debugging support
1080 on SOCFPGA(Arria 10) based platforms.
1082 config DEBUG_SOCFPGA_CYCLONE5_UART1
1083 depends on ARCH_INTEL_SOCFPGA
1084 bool "Use SOCFPGA Cyclone 5 UART1 for low-level debug"
1085 select DEBUG_UART_8250
1087 Say Y here if you want kernel low-level debugging support
1088 on SOCFPGA(Cyclone 5 and Arria 5) based platforms.
1090 config DEBUG_SUN9I_UART0
1091 bool "Kernel low-level debugging messages via sun9i UART0"
1092 depends on MACH_SUN9I
1093 select DEBUG_UART_8250
1095 Say Y here if you want kernel low-level debugging support
1096 on Allwinner A80 based platforms on the UART0.
1098 config DEBUG_SUNXI_UART0
1099 bool "Kernel low-level debugging messages via sunXi UART0"
1100 depends on ARCH_SUNXI
1101 select DEBUG_UART_8250
1103 Say Y here if you want kernel low-level debugging support
1104 on Allwinner A1X based platforms on the UART0.
1106 config DEBUG_SUNXI_UART1
1107 bool "Kernel low-level debugging messages via sunXi UART1"
1108 depends on ARCH_SUNXI
1109 select DEBUG_UART_8250
1111 Say Y here if you want kernel low-level debugging support
1112 on Allwinner A1X based platforms on the UART1.
1114 config DEBUG_SUNXI_R_UART
1115 bool "Kernel low-level debugging messages via sunXi R_UART"
1116 depends on MACH_SUN6I || MACH_SUN8I
1117 select DEBUG_UART_8250
1119 Say Y here if you want kernel low-level debugging support
1120 on Allwinner A31/A23 based platforms on the R_UART.
1122 config DEBUG_SPEAR3XX
1123 bool "Kernel low-level debugging messages via ST SPEAr 3xx/6xx UART"
1124 depends on ARCH_SPEAR3XX || ARCH_SPEAR6XX
1125 select DEBUG_UART_PL01X
1127 Say Y here if you want kernel low-level debugging support
1128 on ST SPEAr based platforms.
1130 config DEBUG_SPEAR13XX
1131 bool "Kernel low-level debugging messages via ST SPEAr 13xx UART"
1132 depends on ARCH_SPEAR13XX
1133 select DEBUG_UART_PL01X
1135 Say Y here if you want kernel low-level debugging support
1136 on ST SPEAr13xx based platforms.
1138 config DEBUG_STIH41X_ASC2
1139 bool "Use StiH415/416 ASC2 UART for low-level debug"
1142 Say Y here if you want kernel low-level debugging support
1143 on STiH415/416 based platforms like b2000, which has
1144 default UART wired up to ASC2.
1148 config DEBUG_STIH41X_SBC_ASC1
1149 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
1152 Say Y here if you want kernel low-level debugging support
1153 on STiH415/416 based platforms like b2020. which has
1154 default UART wired up to SBC ASC1.
1158 config DEBUG_STIH418_SBC_ASC0
1159 bool "Use StiH418 SBC ASC0 UART for low-level debug"
1162 Say Y here if you want kernel low-level debugging support
1163 on STiH418 based platforms which has default UART wired
1168 config STM32F4_DEBUG_UART
1169 bool "Use STM32F4 UART for low-level debug"
1170 depends on MACH_STM32F429 || MACH_STM32F469
1171 select DEBUG_STM32_UART
1173 Say Y here if you want kernel low-level debugging support
1174 on STM32F4 based platforms, which default UART is wired on
1175 USART1, but another UART instance can be selected by modifying
1176 CONFIG_DEBUG_UART_PHYS.
1180 config STM32F7_DEBUG_UART
1181 bool "Use STM32F7 UART for low-level debug"
1182 depends on MACH_STM32F746 || MACH_STM32F769
1183 select DEBUG_STM32_UART
1185 Say Y here if you want kernel low-level debugging support
1186 on STM32F7 based platforms, which default UART is wired on
1187 USART1, but another UART instance can be selected by modifying
1188 CONFIG_DEBUG_UART_PHYS.
1192 config STM32H7_DEBUG_UART
1193 bool "Use STM32H7 UART for low-level debug"
1194 depends on MACH_STM32H743
1195 select DEBUG_STM32_UART
1197 Say Y here if you want kernel low-level debugging support
1198 on STM32H7 based platforms, which default UART is wired on
1199 USART1, but another UART instance can be selected by modifying
1200 CONFIG_DEBUG_UART_PHYS.
1204 config STM32MP1_DEBUG_UART
1205 bool "Use STM32MP1 UART for low-level debug"
1206 depends on MACH_STM32MP157
1207 select DEBUG_STM32_UART
1209 Say Y here if you want kernel low-level debugging support on
1210 STM32MP1-based platforms, where the default UART is wired to
1211 UART4, but another UART instance can be selected by modifying
1212 CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT.
1216 config TEGRA_DEBUG_UART_AUTO_ODMDATA
1217 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
1218 depends on ARCH_TEGRA
1219 select DEBUG_TEGRA_UART
1221 Automatically determines which UART to use for low-level
1222 debug based on the ODMDATA value. This value is part of
1223 the BCT, and is written to the boot memory device using
1224 nvflash, or other flashing tool. When bits 19:18 are 3,
1225 then bits 17:15 indicate which UART to use; 0/1/2/3/4
1228 config TEGRA_DEBUG_UARTA
1229 bool "Kernel low-level debugging messages via Tegra UART A"
1230 depends on ARCH_TEGRA
1231 select DEBUG_TEGRA_UART
1233 Say Y here if you want kernel low-level debugging support
1234 on Tegra based platforms.
1236 config TEGRA_DEBUG_UARTB
1237 bool "Kernel low-level debugging messages via Tegra UART B"
1238 depends on ARCH_TEGRA
1239 select DEBUG_TEGRA_UART
1241 Say Y here if you want kernel low-level debugging support
1242 on Tegra based platforms.
1244 config TEGRA_DEBUG_UARTC
1245 bool "Kernel low-level debugging messages via Tegra UART C"
1246 depends on ARCH_TEGRA
1247 select DEBUG_TEGRA_UART
1249 Say Y here if you want kernel low-level debugging support
1250 on Tegra based platforms.
1252 config TEGRA_DEBUG_UARTD
1253 bool "Kernel low-level debugging messages via Tegra UART D"
1254 depends on ARCH_TEGRA
1255 select DEBUG_TEGRA_UART
1257 Say Y here if you want kernel low-level debugging support
1258 on Tegra based platforms.
1260 config TEGRA_DEBUG_UARTE
1261 bool "Kernel low-level debugging messages via Tegra UART E"
1262 depends on ARCH_TEGRA
1263 select DEBUG_TEGRA_UART
1265 Say Y here if you want kernel low-level debugging support
1266 on Tegra based platforms.
1268 config DEBUG_UX500_UART
1269 depends on ARCH_U8500
1270 bool "Use Ux500 UART for low-level debug"
1272 Say Y here if you want kernel low-level debugging support
1273 on Ux500 based platforms.
1275 config DEBUG_VERSATILE
1276 bool "Kernel low-level debugging messages via ARM Versatile UART"
1277 depends on ARCH_VERSATILE
1278 select DEBUG_UART_PL01X
1280 Say Y here if you want kernel low-level debugging support
1281 on ARM Versatile platforms.
1283 config DEBUG_VEXPRESS_UART0_DETECT
1284 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
1285 depends on ARCH_VEXPRESS && CPU_CP15_MMU
1287 This option enables a simple heuristic which tries to determine
1288 the motherboard's memory map variant (original or RS1) and then
1289 choose the relevant UART0 base address.
1291 Note that this will only work with standard A-class core tiles,
1292 and may fail with non-standard SMM or custom software models.
1294 config DEBUG_VEXPRESS_UART0_CA9
1295 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
1296 depends on ARCH_VEXPRESS
1297 select DEBUG_UART_PL01X
1299 This option selects UART0 at 0x10009000. Except for custom models,
1300 this applies only to the V2P-CA9 tile.
1302 config DEBUG_VEXPRESS_UART0_RS1
1303 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
1304 depends on ARCH_VEXPRESS
1305 select DEBUG_UART_PL01X
1307 This option selects UART0 at 0x1c090000. This applies to most
1308 of the tiles using the RS1 memory map, including all new A-class
1309 core tiles, FPGA-based SMMs and software models.
1311 config DEBUG_VEXPRESS_UART0_CRX
1312 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
1313 depends on ARCH_VEXPRESS && !MMU
1314 select DEBUG_UART_PL01X
1316 This option selects UART0 at 0xb0090000. This is appropriate for
1317 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
1319 config DEBUG_VF_UART
1321 depends on SOC_VF610
1323 Say Y here if you want kernel low-level debugging support
1324 on Vybrid based platforms.
1326 config DEBUG_VT8500_UART0
1327 bool "Use UART0 on VIA/Wondermedia SoCs"
1328 depends on ARCH_VT8500
1330 This option selects UART0 on VIA/Wondermedia System-on-a-chip
1331 devices, including VT8500, WM8505, WM8650 and WM8850.
1333 config DEBUG_ZYNQ_UART0
1334 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
1335 depends on ARCH_ZYNQ
1337 Say Y here if you want the debug print routines to direct
1338 their output to UART0 on the Zynq platform.
1340 config DEBUG_ZYNQ_UART1
1341 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
1342 depends on ARCH_ZYNQ
1344 Say Y here if you want the debug print routines to direct
1345 their output to UART1 on the Zynq platform.
1347 If you have a ZC702 board and want early boot messages to
1348 appear on the USB serial adaptor, select this option.
1351 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
1353 Say Y here if you want the debug print routines to direct
1354 their output to the EmbeddedICE macrocell's DCC channel using
1355 co-processor 14. This is known to work on the ARM9 style ICE
1356 channel and on the XScale with the PEEDI.
1358 Note that the system will appear to hang during boot if there
1359 is nothing connected to read from the DCC.
1361 config DEBUG_SEMIHOSTING
1362 bool "Kernel low-level debug output via semihosting I/O"
1364 Semihosting enables code running on an ARM target to use
1365 the I/O facilities on a host debugger/emulator through a
1366 simple SVC call. The host debugger or emulator must have
1367 semihosting enabled for the special svc call to be trapped
1368 otherwise the kernel will crash.
1370 This is known to work with OpenOCD, as well as
1371 ARM's Fast Models, or any other controlling environment
1372 that implements semihosting.
1374 For more details about semihosting, please see
1375 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
1377 config DEBUG_LL_UART_8250
1378 bool "Kernel low-level debugging via 8250 UART"
1380 Say Y here if you wish the debug print routes to direct
1381 their output to an 8250 UART. You can use this option
1382 to provide the parameters for the 8250 UART rather than
1383 selecting one of the platform specific options above if
1384 you know the parameters for the port.
1386 This option is preferred over the platform specific
1387 options; the platform specific options are deprecated
1388 and will be soon removed.
1390 config DEBUG_LL_UART_PL01X
1391 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
1393 Say Y here if you wish the debug print routes to direct
1394 their output to a PL01x Primecell UART. You can use
1395 this option to provide the parameters for the UART
1396 rather than selecting one of the platform specific
1397 options above if you know the parameters for the port.
1399 This option is preferred over the platform specific
1400 options; the platform specific options are deprecated
1401 and will be soon removed.
1405 config DEBUG_AT91_UART
1407 depends on ARCH_AT91
1409 config DEBUG_EXYNOS_UART
1412 config DEBUG_S3C64XX_UART
1415 config DEBUG_S5PV210_UART
1418 config DEBUG_S3C_UART
1419 depends on DEBUG_S3C64XX_UART || DEBUG_S5PV210_UART || \
1422 default "0" if DEBUG_S3C_UART0
1423 default "1" if DEBUG_S3C_UART1
1424 default "2" if DEBUG_S3C_UART2
1425 default "3" if DEBUG_S3C_UART3
1427 config DEBUG_OMAP2PLUS_UART
1429 depends on ARCH_OMAP2PLUS
1431 config DEBUG_IMX_UART_PORT
1432 int "i.MX Debug UART Port Selection"
1433 depends on DEBUG_IMX1_UART || \
1434 DEBUG_IMX25_UART || \
1435 DEBUG_IMX27_UART || \
1436 DEBUG_IMX31_UART || \
1437 DEBUG_IMX35_UART || \
1438 DEBUG_IMX50_UART || \
1439 DEBUG_IMX51_UART || \
1440 DEBUG_IMX53_UART || \
1441 DEBUG_IMX6Q_UART || \
1442 DEBUG_IMX6SL_UART || \
1443 DEBUG_IMX6SX_UART || \
1444 DEBUG_IMX6UL_UART || \
1448 Choose UART port on which kernel low-level debug messages
1451 config DEBUG_VF_UART_PORT
1452 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1455 depends on SOC_VF610
1457 Choose UART port on which kernel low-level debug messages
1460 config DEBUG_TEGRA_UART
1462 depends on ARCH_TEGRA
1464 config DEBUG_STM32_UART
1466 depends on ARCH_STM32
1468 config DEBUG_UART_FLOW_CONTROL
1469 bool "Enable flow control (CTS) for the debug UART"
1471 default y if DEBUG_FOOTBRIDGE_COM1 || DEBUG_GEMINI || ARCH_RPC
1473 Some UART ports are connected to terminals that will use modem
1474 control signals to indicate whether they are ready to receive text.
1475 In practice this means that the terminal is asserting the special
1476 control signal CTS (Clear To Send). If your debug UART supports
1477 this and your debug terminal will require it, enable this option.
1479 config DEBUG_LL_INCLUDE
1481 default "debug/sa1100.S" if DEBUG_SA1100
1482 default "debug/palmchip.S" if DEBUG_UART_8250_PALMCHIP
1483 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1484 default "debug/at91.S" if DEBUG_AT91_UART
1485 default "debug/asm9260.S" if DEBUG_ASM9260_UART
1486 default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1487 default "debug/dc21285.S" if DEBUG_DC21285_PORT
1488 default "debug/meson.S" if DEBUG_MESON_UARTAO
1489 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1490 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1491 default "debug/icedcc.S" if DEBUG_ICEDCC
1492 default "debug/imx.S" if DEBUG_IMX1_UART || \
1493 DEBUG_IMX25_UART || \
1494 DEBUG_IMX27_UART || \
1495 DEBUG_IMX31_UART || \
1496 DEBUG_IMX35_UART || \
1497 DEBUG_IMX50_UART || \
1498 DEBUG_IMX51_UART || \
1499 DEBUG_IMX53_UART || \
1500 DEBUG_IMX6Q_UART || \
1501 DEBUG_IMX6SL_UART || \
1502 DEBUG_IMX6SX_UART || \
1503 DEBUG_IMX6UL_UART || \
1505 default "debug/msm.S" if DEBUG_QCOM_UARTDM
1506 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1507 default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
1508 default "debug/renesas-scif.S" if DEBUG_R7S9210_SCIF2
1509 default "debug/renesas-scif.S" if DEBUG_R7S9210_SCIF4
1510 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
1511 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF2
1512 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF0
1513 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF1
1514 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF2
1515 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF4
1516 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIFA2
1517 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA0
1518 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA1
1519 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
1520 default "debug/s3c24xx.S" if DEBUG_S3C64XX_UART
1521 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1522 default "debug/sti.S" if DEBUG_STIH41X_ASC2
1523 default "debug/sti.S" if DEBUG_STIH41X_SBC_ASC1
1524 default "debug/sti.S" if DEBUG_STIH418_SBC_ASC0
1525 default "debug/stm32.S" if DEBUG_STM32_UART
1526 default "debug/tegra.S" if DEBUG_TEGRA_UART
1527 default "debug/ux500.S" if DEBUG_UX500_UART
1528 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1529 default "debug/vf.S" if DEBUG_VF_UART
1530 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1531 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1532 default "debug/bcm63xx.S" if DEBUG_BCM63XX_UART
1533 default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0
1534 default "debug/brcmstb.S" if DEBUG_BRCMSTB_UART
1535 default "mach/debug-macro.S"
1537 # Compatibility options for PL01x
1538 config DEBUG_UART_PL01X
1541 # Compatibility options for 8250
1542 config DEBUG_UART_8250
1543 def_bool ARCH_IXP4XX || ARCH_RPC
1545 config DEBUG_UART_PHYS
1546 hex "Physical base address of debug UART"
1547 default 0x01c28000 if DEBUG_SUNXI_UART0
1548 default 0x01c28400 if DEBUG_SUNXI_UART1
1549 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1550 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1551 default 0x01f02800 if DEBUG_SUNXI_R_UART
1552 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1553 default 0x02531000 if DEBUG_KEYSTONE_UART1
1554 default 0x03010fe0 if ARCH_RPC
1555 default 0x07000000 if DEBUG_SUN9I_UART0
1556 default 0x09530000 if DEBUG_STIH418_SBC_ASC0
1557 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
1558 DEBUG_VEXPRESS_UART0_CA9
1559 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1560 default 0x10124000 if DEBUG_RK3X_UART0
1561 default 0x10126000 if DEBUG_RK3X_UART1
1562 default 0x101f1000 if DEBUG_VERSATILE
1563 default 0x101fb000 if DEBUG_NOMADIK_UART
1564 default 0x10210000 if DEBUG_RV1108_UART2
1565 default 0x10220000 if DEBUG_RV1108_UART1
1566 default 0x10230000 if DEBUG_RV1108_UART0
1567 default 0x11002000 if DEBUG_MT8127_UART0
1568 default 0x11006000 if DEBUG_MT6589_UART0
1569 default 0x11009000 if DEBUG_MT8135_UART3
1570 default 0x16000000 if DEBUG_INTEGRATOR
1571 default 0x1600d000 if DEBUG_SD5203_UART
1572 default 0x18000300 if DEBUG_BCM_5301X
1573 default 0x18000400 if DEBUG_BCM_HR2
1574 default 0x18023000 if DEBUG_BCM_IPROC_UART3
1575 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1576 default 0x1f221000 if DEBUG_MSTARV7_PMUART
1577 default 0x20001000 if DEBUG_HIP01_UART
1578 default 0x20060000 if DEBUG_RK29_UART0
1579 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1580 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1581 default 0x20201000 if DEBUG_BCM2835
1582 default 0x3e000000 if DEBUG_BCM_KONA_UART
1583 default 0x3f201000 if DEBUG_BCM2836
1584 default 0x40010000 if STM32MP1_DEBUG_UART
1585 default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
1587 default 0x40028000 if DEBUG_AT91_SAMV7_USART1
1588 default 0x40081000 if DEBUG_LPC18XX_UART0
1589 default 0x40090000 if DEBUG_LPC32XX
1590 default 0x40100000 if DEBUG_PXA_UART1
1591 default 0x42000000 if DEBUG_GEMINI
1592 default 0x44e09000 if DEBUG_AM33XXUART1
1593 default 0x48020000 if DEBUG_OMAP4UART3 || DEBUG_TI81XXUART1
1594 default 0x48022000 if DEBUG_TI81XXUART2
1595 default 0x48024000 if DEBUG_TI81XXUART3
1596 default 0x4806a000 if DEBUG_OMAP2UART1 || DEBUG_OMAP3UART1 || \
1597 DEBUG_OMAP4UART1 || DEBUG_OMAP5UART1
1598 default 0x4806c000 if DEBUG_OMAP2UART2 || DEBUG_OMAP3UART2 || \
1599 DEBUG_OMAP4UART2 || DEBUG_OMAP5UART2
1600 default 0x4806e000 if DEBUG_OMAP2UART3 || DEBUG_OMAP4UART4
1601 default 0x49020000 if DEBUG_OMAP3UART3
1602 default 0x49042000 if DEBUG_OMAP3UART4
1603 default 0x7c0003f8 if DEBUG_FOOTBRIDGE_COM1
1604 default 0x7f005000 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART0
1605 default 0x7f005400 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART1
1606 default 0x7f005800 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART2
1607 default 0x7f005c00 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART3
1608 default 0x80010000 if DEBUG_ASM9260_UART
1609 default 0x80070000 if DEBUG_IMX23_UART
1610 default 0x80074000 if DEBUG_IMX28_UART
1611 default 0x808c0000 if DEBUG_EP93XX || ARCH_EP93XX
1612 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1613 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1614 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1615 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1616 default 0xd0000000 if DEBUG_SPEAR3XX
1617 default 0xd0012000 if DEBUG_MVEBU_UART0
1618 default 0xc81004c0 if DEBUG_MESON_UARTAO
1619 default 0xd4017000 if DEBUG_MMP_UART2
1620 default 0xd4018000 if DEBUG_MMP_UART3
1621 default 0xe0000000 if DEBUG_SPEAR13XX
1622 default 0xe0064200 if DEBUG_AT91_LAN966_FLEXCOM
1623 default 0xe1824200 if DEBUG_AT91_SAMA7G5_FLEXCOM3
1624 default 0xe4007000 if DEBUG_HIP04_UART
1625 default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
1626 default 0xe6c50000 if DEBUG_RMOBILE_SCIFA1
1627 default 0xe6c60000 if DEBUG_RCAR_GEN2_SCIFA2
1628 default 0xe6c80000 if DEBUG_RMOBILE_SCIFA4
1629 default 0xe6e58000 if DEBUG_RCAR_GEN2_SCIF2
1630 default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
1631 default 0xe6e68000 if DEBUG_RCAR_GEN2_SCIF1
1632 default 0xe6ee0000 if DEBUG_RCAR_GEN2_SCIF4
1633 default 0xe8008000 if DEBUG_R7S72100_SCIF2 || DEBUG_R7S9210_SCIF2
1634 default 0xe8009000 if DEBUG_R7S9210_SCIF4
1635 default 0xf0000000 if DEBUG_DIGICOLOR_UA0
1636 default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
1637 default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
1638 default 0xf7fc9000 if DEBUG_BERLIN_UART
1639 default 0xf8020000 if DEBUG_AT91_SAMA5D2_UART1
1640 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1641 default 0xf991e000 if DEBUG_QCOM_UARTDM
1642 default 0xfc00c000 if DEBUG_AT91_SAMA5D4_USART3
1643 default 0xfcb00000 if DEBUG_HI3620_UART
1644 default 0xfd883000 if DEBUG_ALPINE_UART0
1645 default 0xfe531000 if DEBUG_STIH41X_SBC_ASC1
1646 default 0xfed32000 if DEBUG_STIH41X_ASC2
1647 default 0xff690000 if DEBUG_RK32_UART2
1648 default 0xffc02000 if DEBUG_SOCFPGA_UART0
1649 default 0xffc02100 if DEBUG_SOCFPGA_ARRIA10_UART1
1650 default 0xffc03000 if DEBUG_SOCFPGA_CYCLONE5_UART1
1651 default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
1652 default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
1653 default 0xfff36000 if DEBUG_HIGHBANK_UART
1654 default 0xfffb0000 if DEBUG_OMAP1UART1
1655 default 0xfffb0800 if DEBUG_OMAP1UART2
1656 default 0xfffb9800 if DEBUG_OMAP1UART3
1657 default 0xfffe8600 if DEBUG_BCM63XX_UART
1658 default 0xffffee00 if DEBUG_AT91_SAM9263_DBGU
1659 default 0xfffff200 if DEBUG_AT91_RM9200_DBGU
1660 depends on ARCH_EP93XX || \
1661 DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1662 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1663 DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
1664 DEBUG_R7S9210_SCIF2 || DEBUG_R7S9210_SCIF4 || \
1665 DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
1666 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF1 || \
1667 DEBUG_RCAR_GEN2_SCIF2 || DEBUG_RCAR_GEN2_SCIF4 || \
1668 DEBUG_RCAR_GEN2_SCIFA2 || \
1669 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
1670 DEBUG_RMOBILE_SCIFA4 || \
1671 DEBUG_S3C64XX_UART || \
1672 DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
1673 DEBUG_DIGICOLOR_UA0 || \
1674 DEBUG_AT91_UART || DEBUG_STM32_UART || \
1675 DEBUG_STIH41X_ASC2 || DEBUG_STIH41X_SBC_ASC1 || \
1676 DEBUG_STIH418_SBC_ASC0
1678 config DEBUG_UART_VIRT
1679 hex "Virtual base address of debug UART"
1680 default 0xc881f000 if DEBUG_RV1108_UART2
1681 default 0xc8821000 if DEBUG_RV1108_UART1
1682 default 0xc8912000 if DEBUG_RV1108_UART0
1683 default 0xe0010fe0 if ARCH_RPC
1684 default 0xe0824200 if DEBUG_AT91_SAMA7G5_FLEXCOM3
1685 default 0xf0010000 if DEBUG_ASM9260_UART
1686 default 0xf0100000 if DEBUG_DIGICOLOR_UA0
1687 default 0xf01fb000 if DEBUG_NOMADIK_UART
1688 default 0xf0201000 if DEBUG_BCM2835 || DEBUG_BCM2836
1689 default 0xf0221000 if DEBUG_MSTARV7_PMUART
1690 default 0xf1000300 if DEBUG_BCM_5301X
1691 default 0xf1000400 if DEBUG_BCM_HR2
1692 default 0xf1002000 if DEBUG_MT8127_UART0
1693 default 0xf1006000 if DEBUG_MT6589_UART0
1694 default 0xf1009000 if DEBUG_MT8135_UART3
1695 default 0xf1023000 if DEBUG_BCM_IPROC_UART3
1696 default 0xf11f1000 if DEBUG_VERSATILE
1697 default 0xf1600000 if DEBUG_INTEGRATOR
1698 default 0xf1c28000 if DEBUG_SUNXI_UART0
1699 default 0xf1c28400 if DEBUG_SUNXI_UART1
1700 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1701 default 0xf31004c0 if DEBUG_MESON_UARTAO
1702 default 0xf4090000 if DEBUG_LPC32XX
1703 default 0xf4200000 if DEBUG_GEMINI
1704 default 0xf6200000 if DEBUG_PXA_UART1
1705 default 0xf7000000 if DEBUG_SUN9I_UART0
1706 default 0xf7000000 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART0
1707 default 0xf7000400 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART1
1708 default 0xf7000800 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART2
1709 default 0xf7000c00 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART3
1710 default 0xf7020000 if DEBUG_AT91_SAMA5D2_UART1
1711 default 0xf7fc9000 if DEBUG_BERLIN_UART
1712 default 0xf8007000 if DEBUG_HIP04_UART
1713 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1714 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1715 default 0xf8ffee00 if DEBUG_AT91_SAM9263_DBGU
1716 default 0xf8fff200 if DEBUG_AT91_RM9200_DBGU
1717 default 0xf9530000 if DEBUG_STIH418_SBC_ASC0
1718 default 0xf9e09000 if DEBUG_AM33XXUART1
1719 default 0xfa020000 if DEBUG_OMAP4UART3 || DEBUG_TI81XXUART1
1720 default 0xfa022000 if DEBUG_TI81XXUART2
1721 default 0xfa024000 if DEBUG_TI81XXUART3
1722 default 0xfa06a000 if DEBUG_OMAP2UART1 || DEBUG_OMAP3UART1 || \
1723 DEBUG_OMAP4UART1 || DEBUG_OMAP5UART1
1724 default 0xfa06c000 if DEBUG_OMAP2UART2 || DEBUG_OMAP3UART2 || \
1725 DEBUG_OMAP4UART2 || DEBUG_OMAP5UART2
1726 default 0xfa06e000 if DEBUG_OMAP2UART3 || DEBUG_OMAP4UART4
1727 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1728 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1729 default 0xfb00c000 if DEBUG_AT91_SAMA5D4_USART3
1730 default 0xfb020000 if DEBUG_OMAP3UART3
1731 default 0xfb042000 if DEBUG_OMAP3UART4
1732 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1733 default 0xfcfe8600 if DEBUG_BCM63XX_UART
1734 default 0xfd000000 if DEBUG_SPEAR3XX || DEBUG_SPEAR13XX
1735 default 0xfd064200 if DEBUG_AT91_LAN966_FLEXCOM
1736 default 0xfd531000 if DEBUG_STIH41X_SBC_ASC1
1737 default 0xfd883000 if DEBUG_ALPINE_UART0
1738 default 0xfdd32000 if DEBUG_STIH41X_ASC2
1739 default 0xfe010000 if STM32MP1_DEBUG_UART
1740 default 0xfe017000 if DEBUG_MMP_UART2
1741 default 0xfe018000 if DEBUG_MMP_UART3
1742 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1743 default 0xfe300000 if DEBUG_BCM_KONA_UART
1744 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1745 default 0xfeb24000 if DEBUG_RK3X_UART0
1746 default 0xfeb26000 if DEBUG_RK3X_UART1
1747 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1748 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1749 default 0xfec02000 if DEBUG_SOCFPGA_UART0
1750 default 0xfec02100 if DEBUG_SOCFPGA_ARRIA10_UART1
1751 default 0xfec03000 if DEBUG_SOCFPGA_CYCLONE5_UART1
1752 default 0xfec12000 if DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE
1753 default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
1754 default 0xfec90000 if DEBUG_RK32_UART2
1755 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1756 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_SD5203_UART
1757 default 0xfed60000 if DEBUG_RK29_UART0
1758 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1759 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1760 default 0xfedc0000 if DEBUG_EP93XX
1761 default 0xfee003f8 if DEBUG_FOOTBRIDGE_COM1
1762 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1763 default 0xfec00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1764 default 0xfec00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1765 default 0xfef36000 if DEBUG_HIGHBANK_UART
1766 default 0xff0b0000 if DEBUG_OMAP1UART1
1767 default 0xff0b0800 if DEBUG_OMAP1UART2
1768 default 0xff0b9800 if DEBUG_OMAP1UART3
1769 default 0xffd01000 if DEBUG_HIP01_UART
1770 default DEBUG_UART_PHYS if !MMU
1771 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1772 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1773 DEBUG_QCOM_UARTDM || \
1774 DEBUG_S3C64XX_UART || \
1775 DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
1776 DEBUG_DIGICOLOR_UA0 || \
1777 DEBUG_AT91_UART || DEBUG_STM32_UART || \
1778 DEBUG_STIH41X_ASC2 || DEBUG_STIH41X_SBC_ASC1 || \
1779 DEBUG_STIH418_SBC_ASC0
1781 config DEBUG_UART_8250_SHIFT
1782 int "Register offset shift for the 8250 debug UART"
1783 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1784 default 0 if DEBUG_FOOTBRIDGE_COM1 || DEBUG_BCM_5301X || \
1786 default 3 if DEBUG_MSTARV7_PMUART
1789 config DEBUG_UART_8250_WORD
1790 bool "Use 32-bit accesses for 8250 UART"
1791 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1792 depends on DEBUG_UART_8250_SHIFT >= 2
1793 default y if DEBUG_SOCFPGA_UART0 || DEBUG_SOCFPGA_ARRIA10_UART1 || \
1794 DEBUG_SOCFPGA_CYCLONE5_UART1 || DEBUG_KEYSTONE_UART0 || \
1795 DEBUG_KEYSTONE_UART1 || DEBUG_ALPINE_UART0 || \
1796 DEBUG_DAVINCI_DA8XX_UART1 || DEBUG_DAVINCI_DA8XX_UART2 || \
1797 DEBUG_BCM_IPROC_UART3 || DEBUG_BCM_KONA_UART || \
1800 config DEBUG_UART_8250_PALMCHIP
1801 bool "8250 UART is Palmchip BK-310x"
1802 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1804 Palmchip provides a UART implementation compatible with 16550
1805 except for having a different register layout. Say Y here if
1806 the debug UART is of this type.
1808 config DEBUG_UNCOMPRESS
1809 bool "Enable decompressor debugging via DEBUG_LL output"
1810 depends on !ARCH_MULTIPLATFORM
1811 depends on !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
1812 depends on DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1813 (!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
1814 !DEBUG_BRCMSTB_UART && !DEBUG_SEMIHOSTING
1816 This option influences the normal decompressor output for
1817 multiplatform kernels. Normally, multiplatform kernels disable
1818 decompressor output because it is not possible to know where to
1819 send the decompressor output.
1821 When this option is set, the selected DEBUG_LL output method
1822 will be re-used for normal decompressor output on multiplatform
1826 config UNCOMPRESS_INCLUDE
1828 default "mach/uncompress.h" if ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100
1829 default "debug/uncompress.h"
1835 Say Y here if you want to have an early console using the
1836 kernel low-level debugging functions. Add earlyprintk to your
1837 kernel parameters to enable this console.
1839 config ARM_KPROBES_TEST
1840 tristate "Kprobes test module"
1841 depends on KPROBES && MODULES
1843 Perform tests of kprobes API and instruction set simulation.
1845 config PID_IN_CONTEXTIDR
1846 bool "Write the current PID to the CONTEXTIDR register"
1847 depends on CPU_COPY_V6
1849 Enabling this option causes the kernel to write the current PID to
1850 the PROCID field of the CONTEXTIDR register, at the expense of some
1851 additional instructions during context switch. Say Y here only if you
1852 are planning to use hardware trace tools with this kernel.
1854 source "drivers/hwtracing/coresight/Kconfig"