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.
94 bool "Verbose user fault messages"
96 When a user program crashes due to an exception, the kernel can
97 print a brief message explaining what the problem was. This is
98 sometimes helpful for debugging but serves no purpose on a
99 production system. Most people should say N here.
101 In addition, you need to pass user_debug=N on the kernel command
102 line to enable this feature. N consists of the sum of:
104 1 - undefined instruction events
106 4 - invalid data aborts
110 # These options are only for real kernel hackers who want to get their hands dirty.
112 bool "Kernel low-level debugging functions (read help!)"
113 depends on DEBUG_KERNEL
115 Say Y here to include definitions of printascii, printch, printhex
116 in the kernel. This is helpful if you are debugging code that
117 executes before the console is initialized.
119 Note that selecting this option will limit the kernel to a single
120 UART definition, as specified below. Attempting to boot the kernel
121 image on a different platform *will not work*, so this option should
122 not be enabled for kernels that are intended to be portable.
125 prompt "Kernel low-level debugging port"
128 config DEBUG_ALPINE_UART0
129 bool "Kernel low-level debugging messages via Alpine UART0"
130 depends on ARCH_ALPINE
131 select DEBUG_UART_8250
133 Say Y here if you want kernel low-level debugging support
134 on Alpine based platforms.
136 config DEBUG_ASM9260_UART
137 bool "Kernel low-level debugging via asm9260 UART"
138 depends on MACH_ASM9260
140 Say Y here if you want the debug print routines to direct
141 their output to an UART or USART port on asm9260 based
144 DEBUG_UART_PHYS | DEBUG_UART_VIRT
146 0x80000000 | 0xf0000000 | UART0
147 0x80004000 | 0xf0004000 | UART1
148 0x80008000 | 0xf0008000 | UART2
149 0x8000c000 | 0xf000c000 | UART3
150 0x80010000 | 0xf0010000 | UART4
151 0x80014000 | 0xf0014000 | UART5
152 0x80018000 | 0xf0018000 | UART6
153 0x8001c000 | 0xf001c000 | UART7
154 0x80020000 | 0xf0020000 | UART8
155 0x80024000 | 0xf0024000 | UART9
157 config DEBUG_AT91_RM9200_DBGU
158 bool "Kernel low-level debugging on AT91RM9200, AT91SAM9, SAM9X60 DBGU"
159 select DEBUG_AT91_UART
160 depends on SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAM9X60
162 Say Y here if you want kernel low-level debugging support
164 at91rm9200, at91sam9260, at91sam9g20, at91sam9261,
165 at91sam9g10, at91sam9n12, at91sam9rl64, at91sam9x5, sam9x60
167 config DEBUG_AT91_SAM9263_DBGU
168 bool "Kernel low-level debugging on AT91SAM{9263,9G45,A5D3} DBGU"
169 select DEBUG_AT91_UART
170 depends on SOC_AT91SAM9 || SOC_SAMA5D3
172 Say Y here if you want kernel low-level debugging support
174 at91sam9263, at91sam9g45, at91sam9m10,
177 config DEBUG_AT91_SAMA5D2_UART1
178 bool "Kernel low-level debugging on SAMA5D2 UART1"
179 select DEBUG_AT91_UART
180 depends on SOC_SAMA5D2
182 Say Y here if you want kernel low-level debugging support
183 on the UART1 port of sama5d2.
185 config DEBUG_AT91_SAMA5D4_USART3
186 bool "Kernel low-level debugging on SAMA5D4 USART3"
187 select DEBUG_AT91_UART
188 depends on SOC_SAMA5D4
190 Say Y here if you want kernel low-level debugging support
191 on the USART3 port of sama5d4.
193 config DEBUG_AT91_SAMV7_USART1
194 bool "Kernel low-level debugging via SAMV7 USART1"
195 select DEBUG_AT91_UART
198 Say Y here if you want the debug print routines to direct
199 their output to the USART1 port on SAMV7 based
202 config DEBUG_AT91_SAMA7G5_FLEXCOM3
203 bool "Kernel low-level debugging on SAMA7G5 FLEXCOM3"
204 select DEBUG_AT91_UART
205 depends on SOC_SAMA7G5
207 Say Y here if you want kernel low-level debugging support
208 on the FLEXCOM3 port of SAMA7G5.
210 config DEBUG_AT91_LAN966_FLEXCOM
211 bool "Kernel low-level debugging on LAN966 FLEXCOM USART"
212 select DEBUG_AT91_UART
213 depends on SOC_LAN966
215 Say Y here if you want kernel low-level debugging support
216 on the FLEXCOM port of LAN966.
218 DEBUG_UART_PHYS | DEBUG_UART_VIRT
220 0xe0040200 | 0xfd040200 | FLEXCOM0
221 0xe0044200 | 0xfd044200 | FLEXCOM1
222 0xe0060200 | 0xfd060200 | FLEXCOM2
223 0xe0064200 | 0xfd064200 | FLEXCOM3
224 0xe0070200 | 0xfd070200 | FLEXCOM4
226 By default, enabling FLEXCOM3 port. Based on requirement, use
227 DEBUG_UART_PHYS and DEBUG_UART_VIRT configurations from above
231 bool "Kernel low-level debugging on BCM2835 PL011 UART"
232 depends on ARCH_BCM2835 && ARCH_MULTI_V6
233 select DEBUG_UART_PL01X
236 bool "Kernel low-level debugging on BCM2836 PL011 UART"
237 depends on ARCH_BCM2835 && ARCH_MULTI_V7
238 select DEBUG_UART_PL01X
240 config DEBUG_BCM_5301X
241 bool "Kernel low-level debugging on BCM5301X/NSP UART1"
242 depends on ARCH_BCM_5301X || ARCH_BCM_NSP
243 select DEBUG_UART_8250
246 bool "Kernel low-level debugging on Hurricane 2 UART2"
247 depends on ARCH_BCM_HR2
248 select DEBUG_UART_8250
250 config DEBUG_BCM_IPROC_UART3
251 bool "Kernel low-level debugging on BCM IPROC UART3"
252 depends on ARCH_BCM_CYGNUS
253 select DEBUG_UART_8250
255 Say Y here if you want the debug print routines to direct
256 their output to the third serial port on these devices.
258 config DEBUG_BCM_KONA_UART
259 bool "Kernel low-level debugging messages via BCM KONA UART"
260 depends on ARCH_BCM_MOBILE
261 select DEBUG_UART_8250
263 Say Y here if you want kernel low-level debugging support
264 on Broadcom SoC platforms.
265 This low level debug works for Broadcom
266 mobile SoCs in the Kona family of chips (e.g. bcm28155,
269 config DEBUG_BCM63XX_UART
270 bool "Kernel low-level debugging on BCM63XX UART"
271 depends on ARCH_BCMBCA
273 config DEBUG_BERLIN_UART
274 bool "Marvell Berlin SoC Debug UART"
275 depends on ARCH_BERLIN
276 select DEBUG_UART_8250
278 Say Y here if you want kernel low-level debugging support
279 on Marvell Berlin SoC based platforms.
281 config DEBUG_BRCMSTB_UART
282 bool "Use BRCMSTB UART for low-level debug"
283 depends on ARCH_BRCMSTB
285 Say Y here if you want the debug print routines to direct
286 their output to the first serial port on these devices. The
287 UART physical and virtual address is automatically provided
288 based on the chip identification register value.
290 If you have a Broadcom STB chip and would like early print
291 messages to appear over the UART, select this option.
293 config DEBUG_CLPS711X_UART1
294 bool "Kernel low-level debugging messages via UART1"
295 depends on ARCH_CLPS711X
297 Say Y here if you want the debug print routines to direct
298 their output to the first serial port on these devices.
300 config DEBUG_CLPS711X_UART2
301 bool "Kernel low-level debugging messages via UART2"
302 depends on ARCH_CLPS711X
304 Say Y here if you want the debug print routines to direct
305 their output to the second serial port on these devices.
307 config DEBUG_DAVINCI_DA8XX_UART1
308 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
309 depends on ARCH_DAVINCI_DA8XX
310 select DEBUG_UART_8250
312 Say Y here if you want the debug print routines to direct
313 their output to UART1 serial port on DaVinci DA8XX devices.
315 config DEBUG_DAVINCI_DA8XX_UART2
316 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
317 depends on ARCH_DAVINCI_DA8XX
318 select DEBUG_UART_8250
320 Say Y here if you want the debug print routines to direct
321 their output to UART2 serial port on DaVinci DA8XX devices.
323 config DEBUG_DC21285_PORT
324 bool "Kernel low-level debugging messages via footbridge serial port"
325 depends on FOOTBRIDGE
327 Say Y here if you want the debug print routines to direct
328 their output to the serial port in the DC21285 (Footbridge).
330 config DEBUG_DIGICOLOR_UA0
331 bool "Kernel low-level debugging messages via Digicolor UA0"
332 depends on ARCH_DIGICOLOR
334 Say Y here if you want the debug print routines to direct
335 their output to the UA0 serial port in the CX92755.
338 bool "Kernel low-level debugging messages via ep93xx UART"
339 depends on ARCH_EP93XX
340 select DEBUG_UART_PL01X
342 Say Y here if you want kernel low-level debugging support
343 on Cirrus Logic EP93xx based platforms.
345 config DEBUG_FOOTBRIDGE_COM1
346 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
347 depends on FOOTBRIDGE
348 select DEBUG_UART_8250
350 Say Y here if you want the debug print routines to direct
351 their output to the 8250 at PCI COM1.
354 bool "Kernel low-level debugging messages via Cortina Systems Gemini UART"
355 depends on ARCH_GEMINI
356 select DEBUG_UART_8250
358 Say Y here if you want kernel low-level debugging support
359 on Cortina Gemini based platforms.
361 config DEBUG_HI3620_UART
362 bool "Hisilicon HI3620 Debug UART"
363 depends on ARCH_HI3xxx
364 select DEBUG_UART_PL01X
366 Say Y here if you want kernel low-level debugging support
369 config DEBUG_HIGHBANK_UART
370 bool "Kernel low-level debugging messages via Highbank UART"
371 depends on ARCH_HIGHBANK
372 select DEBUG_UART_PL01X
374 Say Y here if you want the debug print routines to direct
375 their output to the UART on Highbank based devices.
377 config DEBUG_HIP01_UART
378 bool "Hisilicon Hip01 Debug UART"
379 depends on ARCH_HIP01
380 select DEBUG_UART_8250
382 Say Y here if you want kernel low-level debugging support
385 config DEBUG_HIP04_UART
386 bool "Hisilicon HiP04 Debug UART"
387 depends on ARCH_HIP04
388 select DEBUG_UART_8250
390 Say Y here if you want kernel low-level debugging support
393 config DEBUG_HIX5HD2_UART
394 bool "Hisilicon Hix5hd2 Debug UART"
395 depends on ARCH_HIX5HD2
396 select DEBUG_UART_PL01X
398 Say Y here if you want kernel low-level debugging support
401 config DEBUG_IMX1_UART
402 bool "i.MX1 Debug UART"
405 Say Y here if you want kernel low-level debugging support
408 config DEBUG_IMX23_UART
409 bool "i.MX23 Debug UART"
411 select DEBUG_UART_PL01X
413 Say Y here if you want kernel low-level debugging support
416 config DEBUG_IMX25_UART
417 bool "i.MX25 Debug UART"
420 Say Y here if you want kernel low-level debugging support
423 config DEBUG_IMX27_UART
424 bool "i.MX27 Debug UART"
427 Say Y here if you want kernel low-level debugging support
430 config DEBUG_IMX28_UART
431 bool "i.MX28 Debug UART"
433 select DEBUG_UART_PL01X
435 Say Y here if you want kernel low-level debugging support
438 config DEBUG_IMX31_UART
439 bool "i.MX31 Debug UART"
442 Say Y here if you want kernel low-level debugging support
445 config DEBUG_IMX35_UART
446 bool "i.MX35 Debug UART"
449 Say Y here if you want kernel low-level debugging support
452 config DEBUG_IMX50_UART
453 bool "i.MX50 Debug UART"
456 Say Y here if you want kernel low-level debugging support
459 config DEBUG_IMX51_UART
460 bool "i.MX51 Debug UART"
463 Say Y here if you want kernel low-level debugging support
466 config DEBUG_IMX53_UART
467 bool "i.MX53 Debug UART"
470 Say Y here if you want kernel low-level debugging support
473 config DEBUG_IMX6Q_UART
474 bool "i.MX6Q/DL Debug UART"
477 Say Y here if you want kernel low-level debugging support
480 config DEBUG_IMX6SL_UART
481 bool "i.MX6SL Debug UART"
482 depends on SOC_IMX6SL
484 Say Y here if you want kernel low-level debugging support
487 config DEBUG_IMX6SX_UART
488 bool "i.MX6SX Debug UART"
489 depends on SOC_IMX6SX
491 Say Y here if you want kernel low-level debugging support
494 config DEBUG_IMX6UL_UART
495 bool "i.MX6UL Debug UART"
496 depends on SOC_IMX6UL
498 Say Y here if you want kernel low-level debugging support
501 config DEBUG_IMX7D_UART
502 bool "i.MX7D Debug UART"
505 Say Y here if you want kernel low-level debugging support
508 config DEBUG_INTEGRATOR
509 bool "Kernel low-level debugging messages via ARM Integrator UART"
510 depends on ARCH_INTEGRATOR
511 select DEBUG_UART_PL01X
513 Say Y here if you want kernel low-level debugging support
514 on ARM Integrator platforms.
516 config DEBUG_KEYSTONE_UART0
517 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
518 depends on ARCH_KEYSTONE
519 select DEBUG_UART_8250
521 Say Y here if you want the debug print routines to direct
522 their output to UART0 serial port on KEYSTONE2 devices.
524 config DEBUG_KEYSTONE_UART1
525 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
526 depends on ARCH_KEYSTONE
527 select DEBUG_UART_8250
529 Say Y here if you want the debug print routines to direct
530 their output to UART1 serial port on KEYSTONE2 devices.
532 config DEBUG_LPC18XX_UART0
533 bool "Kernel low-level debugging via LPC18xx/43xx UART0"
534 depends on ARCH_LPC18XX
535 select DEBUG_UART_8250
537 Say Y here if you want kernel low-level debugging support
538 on NXP LPC18xx/43xx UART0.
541 bool "Kernel low-level debugging messages via NXP LPC32xx UART"
542 depends on ARCH_LPC32XX
543 select DEBUG_UART_8250
545 Say Y here if you want kernel low-level debugging support
546 on NXP LPC32xx based platforms.
548 config DEBUG_MESON_UARTAO
549 bool "Kernel low-level debugging via Meson6 UARTAO"
550 depends on ARCH_MESON
552 Say Y here if you want kernel low-lever debugging support
553 on Amlogic Meson6 based platforms on the UARTAO.
555 config DEBUG_MMP_UART2
556 bool "Kernel low-level debugging message via MMP UART2"
558 select DEBUG_UART_8250
560 Say Y here if you want kernel low-level debugging support
563 config DEBUG_MMP_UART3
564 bool "Kernel low-level debugging message via MMP UART3"
566 select DEBUG_UART_8250
568 Say Y here if you want kernel low-level debugging support
571 config DEBUG_MVEBU_UART0
572 bool "Kernel low-level debugging messages via MVEBU UART0 (old bootloaders)"
573 depends on ARCH_MVEBU
574 depends on ARCH_MVEBU && CPU_V7
575 select DEBUG_UART_8250
577 Say Y here if you want kernel low-level debugging support
578 on MVEBU based platforms on UART0.
580 This option should be used with the old bootloaders
581 that left the internal registers mapped at
582 0xd0000000. As of today, this is the case on
583 platforms such as the Globalscale Mirabox or the
584 Plathome OpenBlocks AX3, when using the original
587 This option will not work on older Marvell platforms
588 (Kirkwood, Dove, MV78xx0, Orion5x), which should pick
589 the "new bootloader" variant.
591 If the wrong DEBUG_MVEBU_UART* option is selected,
592 when u-boot hands over to the kernel, the system
593 silently crashes, with no serial output at all.
595 config DEBUG_MVEBU_UART0_ALTERNATE
596 bool "Kernel low-level debugging messages via MVEBU UART0 (new bootloaders)"
597 depends on ARCH_MVEBU || ARCH_DOVE || ARCH_MV78XX0 || ARCH_ORION5X
598 select DEBUG_UART_8250
600 Say Y here if you want kernel low-level debugging support
601 on MVEBU based platforms on UART0. (Armada XP, Armada 3xx,
602 Kirkwood, Dove, MV78xx0, Orion5x).
605 This option should be used with the new bootloaders
606 that remap the internal registers at 0xf1000000.
608 If the wrong DEBUG_MVEBU_UART* option is selected,
609 when u-boot hands over to the kernel, the system
610 silently crashes, with no serial output at all.
612 config DEBUG_MVEBU_UART1_ALTERNATE
613 bool "Kernel low-level debugging messages via MVEBU UART1 (new bootloaders)"
614 depends on ARCH_MVEBU
615 select DEBUG_UART_8250
617 Say Y here if you want kernel low-level debugging support
618 on MVEBU based platforms on UART1. (Armada XP, Armada 3xx,
619 Kirkwood, Dove, MV78xx0, Orion5x).
621 This option should be used with the new bootloaders
622 that remap the internal registers at 0xf1000000.
623 All of the older (pre Armada XP/370) platforms also use
624 this address, regardless of the boot loader version.
626 If the wrong DEBUG_MVEBU_UART* option is selected,
627 when u-boot hands over to the kernel, the system
628 silently crashes, with no serial output at all.
630 config DEBUG_MSTARV7_PMUART
631 bool "Kernel low-level debugging messages via MSTARV7 PM UART"
632 depends on ARCH_MSTARV7
633 select DEBUG_UART_8250
635 Say Y here if you want kernel low-level debugging support
636 for MSTAR ARMv7-based platforms on PM UART.
638 config DEBUG_MT6589_UART0
639 bool "Mediatek mt6589 UART0"
640 depends on ARCH_MEDIATEK
641 select DEBUG_UART_8250
643 Say Y here if you want kernel low-level debugging support
644 for Mediatek mt6589 based platforms on UART0.
646 config DEBUG_MT8127_UART0
647 bool "Mediatek mt8127/mt6592 UART0"
648 depends on ARCH_MEDIATEK
649 select DEBUG_UART_8250
651 Say Y here if you want kernel low-level debugging support
652 for Mediatek mt8127 based platforms on UART0.
654 config DEBUG_MT8135_UART3
655 bool "Mediatek mt8135 UART3"
656 depends on ARCH_MEDIATEK
657 select DEBUG_UART_8250
659 Say Y here if you want kernel low-level debugging support
660 for Mediatek mt8135 based platforms on UART3.
662 config DEBUG_NOMADIK_UART
663 bool "Kernel low-level debugging messages via NOMADIK UART"
664 depends on ARCH_NOMADIK
665 select DEBUG_UART_PL01X
667 Say Y here if you want kernel low-level debugging support
668 on NOMADIK based platforms.
670 config DEBUG_NSPIRE_CLASSIC_UART
671 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
672 depends on ARCH_NSPIRE
673 select DEBUG_UART_8250
675 Say Y here if you want kernel low-level debugging support
676 on TI-NSPIRE classic models.
678 config DEBUG_NSPIRE_CX_UART
679 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
680 depends on ARCH_NSPIRE
681 select DEBUG_UART_PL01X
683 Say Y here if you want kernel low-level debugging support
684 on TI-NSPIRE CX models.
686 config DEBUG_OMAP1UART1
687 bool "Kernel low-level debugging via OMAP1 UART1"
688 depends on ARCH_OMAP1
689 select DEBUG_UART_8250
691 Say Y here if you want kernel low-level debugging support
692 on OMAP1 based platforms (except OMAP730) on the UART1.
694 config DEBUG_OMAP1UART2
695 bool "Kernel low-level debugging via OMAP1 UART2"
696 depends on ARCH_OMAP1
697 select DEBUG_UART_8250
699 Say Y here if you want kernel low-level debugging support
700 on OMAP1 based platforms (except OMAP730) on the UART2.
702 config DEBUG_OMAP1UART3
703 bool "Kernel low-level debugging via OMAP1 UART3"
704 depends on ARCH_OMAP1
705 select DEBUG_UART_8250
707 Say Y here if you want kernel low-level debugging support
708 on OMAP1 based platforms (except OMAP730) on the UART3.
710 config DEBUG_OMAP2UART1
711 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
712 depends on ARCH_OMAP2PLUS
713 select DEBUG_UART_8250
715 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
716 omap3 torpedo and 3530 lv som.
718 config DEBUG_OMAP2UART2
719 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
720 depends on ARCH_OMAP2PLUS
721 select DEBUG_UART_8250
723 config DEBUG_OMAP2UART3
724 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
725 depends on ARCH_OMAP2PLUS
726 select DEBUG_UART_8250
728 config DEBUG_OMAP3UART3
729 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
730 depends on ARCH_OMAP2PLUS
731 select DEBUG_UART_8250
733 This covers at least cm_t3x, beagle, crane, devkit8000,
734 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
737 config DEBUG_OMAP4UART3
738 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
739 depends on ARCH_OMAP2PLUS
740 select DEBUG_UART_8250
742 config DEBUG_OMAP3UART4
743 bool "Kernel low-level debugging messages via OMAP36XX UART4"
744 depends on ARCH_OMAP2PLUS
745 select DEBUG_UART_8250
747 config DEBUG_OMAP4UART4
748 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
749 depends on ARCH_OMAP2PLUS
750 select DEBUG_UART_8250
752 config DEBUG_TI81XXUART1
753 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
754 depends on ARCH_OMAP2PLUS
755 select DEBUG_UART_8250
757 config DEBUG_TI81XXUART2
758 bool "Kernel low-level debugging messages via TI81XX UART2"
759 depends on ARCH_OMAP2PLUS
760 select DEBUG_UART_8250
762 config DEBUG_TI81XXUART3
763 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
764 depends on ARCH_OMAP2PLUS
765 select DEBUG_UART_8250
767 config DEBUG_AM33XXUART1
768 bool "Kernel low-level debugging messages via AM33XX UART1"
769 depends on ARCH_OMAP2PLUS
770 select DEBUG_UART_8250
772 config DEBUG_ZOOM_UART
773 bool "Kernel low-level debugging messages via Zoom2/3 UART"
774 depends on ARCH_OMAP2PLUS
775 select DEBUG_OMAP2PLUS_UART
777 config DEBUG_PXA_UART1
779 bool "Use PXA UART1 for low-level debug"
780 select DEBUG_UART_8250
782 Say Y here if you want kernel low-level debugging support
785 config DEBUG_QCOM_UARTDM
786 bool "Kernel low-level debugging messages via QCOM UARTDM"
789 Say Y here if you want the debug print routines to direct
790 their output to the serial port on Qualcomm devices.
792 ARCH DEBUG_UART_PHYS DEBUG_UART_VIRT
793 APQ8064 0x16640000 0xf0040000
794 APQ8084 0xf995e000 0xfa75e000
795 IPQ4019 0x078af000 0xf78af000
796 MSM8X60 0x19c40000 0xf0040000
797 MSM8960 0x16440000 0xf0040000
798 MSM8974 0xf991e000 0xfa71e000
800 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
801 options based on your needs.
803 config DEBUG_REALVIEW_STD_PORT
804 bool "RealView Default UART"
805 depends on ARCH_REALVIEW
806 select DEBUG_UART_PL01X
808 Say Y here if you want the debug print routines to direct
809 their output to the serial port on RealView EB, PB11MP, PBA8
812 config DEBUG_REALVIEW_PB1176_PORT
813 bool "RealView PB1176 UART"
814 depends on MACH_REALVIEW_PB1176
815 select DEBUG_UART_PL01X
817 Say Y here if you want the debug print routines to direct
818 their output to the standard serial port on the RealView
821 config DEBUG_RV1108_UART0
822 bool "Kernel low-level debugging messages via Rockchip RV1108 UART0"
823 depends on ARCH_ROCKCHIP
824 select DEBUG_UART_8250
826 Say Y here if you want kernel low-level debugging support
827 on Rockchip RV1108 based platforms.
829 config DEBUG_RV1108_UART1
830 bool "Kernel low-level debugging messages via Rockchip RV1108 UART1"
831 depends on ARCH_ROCKCHIP
832 select DEBUG_UART_8250
834 Say Y here if you want kernel low-level debugging support
835 on Rockchip RV1108 based platforms.
837 config DEBUG_RV1108_UART2
838 bool "Kernel low-level debugging messages via Rockchip RV1108 UART2"
839 depends on ARCH_ROCKCHIP
840 select DEBUG_UART_8250
842 Say Y here if you want kernel low-level debugging support
843 on Rockchip RV1108 based platforms.
845 config DEBUG_RK29_UART0
846 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
847 depends on ARCH_ROCKCHIP
848 select DEBUG_UART_8250
850 Say Y here if you want kernel low-level debugging support
851 on Rockchip based platforms.
853 config DEBUG_RK29_UART1
854 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
855 depends on ARCH_ROCKCHIP
856 select DEBUG_UART_8250
858 Say Y here if you want kernel low-level debugging support
859 on Rockchip based platforms.
861 config DEBUG_RK29_UART2
862 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
863 depends on ARCH_ROCKCHIP
864 select DEBUG_UART_8250
866 Say Y here if you want kernel low-level debugging support
867 on Rockchip based platforms.
869 config DEBUG_RK3X_UART0
870 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
871 depends on ARCH_ROCKCHIP
872 select DEBUG_UART_8250
874 Say Y here if you want kernel low-level debugging support
875 on Rockchip based platforms.
877 config DEBUG_RK3X_UART1
878 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
879 depends on ARCH_ROCKCHIP
880 select DEBUG_UART_8250
882 Say Y here if you want kernel low-level debugging support
883 on Rockchip based platforms.
885 config DEBUG_RK3X_UART2
886 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
887 depends on ARCH_ROCKCHIP
888 select DEBUG_UART_8250
890 Say Y here if you want kernel low-level debugging support
891 on Rockchip based platforms.
893 config DEBUG_RK3X_UART3
894 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
895 depends on ARCH_ROCKCHIP
896 select DEBUG_UART_8250
898 Say Y here if you want kernel low-level debugging support
899 on Rockchip based platforms.
901 config DEBUG_RK32_UART2
902 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
903 depends on ARCH_ROCKCHIP
904 select DEBUG_UART_8250
906 Say Y here if you want kernel low-level debugging support
907 on Rockchip RK32xx based platforms.
909 config DEBUG_R7S72100_SCIF2
910 bool "Kernel low-level debugging messages via SCIF2 on R7S72100"
911 depends on ARCH_R7S72100
913 Say Y here if you want kernel low-level debugging support
914 via SCIF2 on Renesas RZ/A1H (R7S72100).
916 config DEBUG_R7S9210_SCIF2
917 bool "Kernel low-level debugging messages via SCIF2 on R7S9210"
918 depends on ARCH_R7S9210
920 Say Y here if you want kernel low-level debugging support
921 via SCIF2 on Renesas RZ/A2M (R7S9210).
923 config DEBUG_R7S9210_SCIF4
924 bool "Kernel low-level debugging messages via SCIF4 on R7S9210"
925 depends on ARCH_R7S9210
927 Say Y here if you want kernel low-level debugging support
928 via SCIF4 on Renesas RZ/A2M (R7S9210).
930 config DEBUG_RCAR_GEN1_SCIF0
931 bool "Kernel low-level debugging messages via SCIF0 on R8A7778"
932 depends on ARCH_R8A7778
934 Say Y here if you want kernel low-level debugging support
935 via SCIF0 on Renesas R-Car M1A (R8A7778).
937 config DEBUG_RCAR_GEN1_SCIF2
938 bool "Kernel low-level debugging messages via SCIF2 on R8A7779"
939 depends on ARCH_R8A7779
941 Say Y here if you want kernel low-level debugging support
942 via SCIF2 on Renesas R-Car H1 (R8A7779).
944 config DEBUG_RCAR_GEN2_SCIF0
945 bool "Kernel low-level debugging messages via SCIF0 on R-Car Gen2 and RZ/G1"
946 depends on ARCH_R8A7743 || ARCH_R8A7744 || ARCH_R8A7790 || \
947 ARCH_R8A7791 || ARCH_R8A7792 || ARCH_R8A7793
949 Say Y here if you want kernel low-level debugging support
950 via SCIF0 on Renesas RZ/G1M (R8A7743), RZ/G1N (R8A7744),
951 R-Car H2 (R8A7790), M2-W (R8A7791), V2H (R8A7792), or
954 config DEBUG_RCAR_GEN2_SCIF1
955 bool "Kernel low-level debugging messages via SCIF1 on R8A77470"
956 depends on ARCH_R8A77470
958 Say Y here if you want kernel low-level debugging support
959 via SCIF1 on Renesas RZ/G1C (R8A77470).
961 config DEBUG_RCAR_GEN2_SCIF2
962 bool "Kernel low-level debugging messages via SCIF2 on R8A7794"
963 depends on ARCH_R8A7794
965 Say Y here if you want kernel low-level debugging support
966 via SCIF2 on Renesas R-Car E2 (R8A7794).
968 config DEBUG_RCAR_GEN2_SCIF4
969 bool "Kernel low-level debugging messages via SCIF4 on R8A7745"
970 depends on ARCH_R8A7745
972 Say Y here if you want kernel low-level debugging support
973 via SCIF4 on Renesas RZ/G1E (R8A7745).
975 config DEBUG_RCAR_GEN2_SCIFA2
976 bool "Kernel low-level debugging messages via SCIFA2 on R8A7742"
977 depends on ARCH_R8A7742
979 Say Y here if you want kernel low-level debugging support
980 via SCIFA2 on Renesas RZ/G1H (R8A7742).
982 config DEBUG_RMOBILE_SCIFA0
983 bool "Kernel low-level debugging messages via SCIFA0 on R8A73A4"
984 depends on ARCH_R8A73A4
986 Say Y here if you want kernel low-level debugging support
987 via SCIFA0 on Renesas R-Mobile APE6 (R8A73A4).
989 config DEBUG_RMOBILE_SCIFA1
990 bool "Kernel low-level debugging messages via SCIFA1 on R8A7740"
991 depends on ARCH_R8A7740
993 Say Y here if you want kernel low-level debugging support
994 via SCIFA1 on Renesas R-Mobile A1 (R8A7740).
996 config DEBUG_RMOBILE_SCIFA4
997 bool "Kernel low-level debugging messages via SCIFA4 on SH73A0"
998 depends on ARCH_SH73A0
1000 Say Y here if you want kernel low-level debugging support
1001 via SCIFA4 on Renesas SH-Mobile AG5 (SH73A0).
1003 config DEBUG_S3C_UART0
1004 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS
1005 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1006 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1007 select DEBUG_S5PV210_UART if ARCH_S5PV210
1008 bool "Use Samsung S3C UART 0 for low-level debug"
1010 Say Y here if you want the debug print routines to direct
1011 their output to UART 0. The port must have been initialised
1012 by the boot-loader before use.
1014 config DEBUG_S3C_UART1
1015 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS
1016 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1017 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1018 select DEBUG_S5PV210_UART if ARCH_S5PV210
1019 bool "Use Samsung S3C UART 1 for low-level debug"
1021 Say Y here if you want the debug print routines to direct
1022 their output to UART 1. The port must have been initialised
1023 by the boot-loader before use.
1025 config DEBUG_S3C_UART2
1026 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS
1027 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1028 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1029 select DEBUG_S5PV210_UART if ARCH_S5PV210
1030 bool "Use Samsung S3C UART 2 for low-level debug"
1032 Say Y here if you want the debug print routines to direct
1033 their output to UART 2. The port must have been initialised
1034 by the boot-loader before use.
1036 config DEBUG_S3C_UART3
1037 depends on ARCH_EXYNOS || ARCH_S5PV210
1038 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
1039 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
1040 select DEBUG_S5PV210_UART if ARCH_S5PV210
1041 bool "Use Samsung S3C UART 3 for low-level debug"
1043 Say Y here if you want the debug print routines to direct
1044 their output to UART 3. The port must have been initialised
1045 by the boot-loader before use.
1048 depends on ARCH_SA1100
1049 bool "Use SA1100 UARTs for low-level debug"
1051 Say Y here if you want kernel low-level debugging support
1052 on SA-11x0 UART ports. The kernel will check for the first
1053 enabled UART in a sequence 3-1-2.
1055 config DEBUG_SD5203_UART
1056 bool "Hisilicon SD5203 Debug UART"
1057 depends on ARCH_SD5203
1058 select DEBUG_UART_8250
1060 Say Y here if you want kernel low-level debugging support
1063 config DEBUG_SOCFPGA_UART0
1064 depends on ARCH_INTEL_SOCFPGA
1065 bool "Use SOCFPGA UART0 for low-level debug"
1066 select DEBUG_UART_8250
1068 Say Y here if you want kernel low-level debugging support
1069 on SOCFPGA(Cyclone 5 and Arria 5) based platforms.
1071 config DEBUG_SOCFPGA_ARRIA10_UART1
1072 depends on ARCH_INTEL_SOCFPGA
1073 bool "Use SOCFPGA Arria10 UART1 for low-level debug"
1074 select DEBUG_UART_8250
1076 Say Y here if you want kernel low-level debugging support
1077 on SOCFPGA(Arria 10) based platforms.
1079 config DEBUG_SOCFPGA_CYCLONE5_UART1
1080 depends on ARCH_INTEL_SOCFPGA
1081 bool "Use SOCFPGA Cyclone 5 UART1 for low-level debug"
1082 select DEBUG_UART_8250
1084 Say Y here if you want kernel low-level debugging support
1085 on SOCFPGA(Cyclone 5 and Arria 5) based platforms.
1087 config DEBUG_SUN9I_UART0
1088 bool "Kernel low-level debugging messages via sun9i UART0"
1089 depends on MACH_SUN9I
1090 select DEBUG_UART_8250
1092 Say Y here if you want kernel low-level debugging support
1093 on Allwinner A80 based platforms on the UART0.
1095 config DEBUG_SUNXI_UART0
1096 bool "Kernel low-level debugging messages via sunXi UART0"
1097 depends on ARCH_SUNXI
1098 select DEBUG_UART_8250
1100 Say Y here if you want kernel low-level debugging support
1101 on Allwinner A1X based platforms on the UART0.
1103 config DEBUG_SUNXI_UART1
1104 bool "Kernel low-level debugging messages via sunXi UART1"
1105 depends on ARCH_SUNXI
1106 select DEBUG_UART_8250
1108 Say Y here if you want kernel low-level debugging support
1109 on Allwinner A1X based platforms on the UART1.
1111 config DEBUG_SUNXI_R_UART
1112 bool "Kernel low-level debugging messages via sunXi R_UART"
1113 depends on MACH_SUN6I || MACH_SUN8I
1114 select DEBUG_UART_8250
1116 Say Y here if you want kernel low-level debugging support
1117 on Allwinner A31/A23 based platforms on the R_UART.
1119 config DEBUG_SPEAR3XX
1120 bool "Kernel low-level debugging messages via ST SPEAr 3xx/6xx UART"
1121 depends on ARCH_SPEAR3XX || ARCH_SPEAR6XX
1122 select DEBUG_UART_PL01X
1124 Say Y here if you want kernel low-level debugging support
1125 on ST SPEAr based platforms.
1127 config DEBUG_SPEAR13XX
1128 bool "Kernel low-level debugging messages via ST SPEAr 13xx UART"
1129 depends on ARCH_SPEAR13XX
1130 select DEBUG_UART_PL01X
1132 Say Y here if you want kernel low-level debugging support
1133 on ST SPEAr13xx based platforms.
1135 config DEBUG_STIH41X_ASC2
1136 bool "Use StiH415/416 ASC2 UART for low-level debug"
1139 Say Y here if you want kernel low-level debugging support
1140 on STiH415/416 based platforms like b2000, which has
1141 default UART wired up to ASC2.
1145 config DEBUG_STIH41X_SBC_ASC1
1146 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
1149 Say Y here if you want kernel low-level debugging support
1150 on STiH415/416 based platforms like b2020. which has
1151 default UART wired up to SBC ASC1.
1155 config DEBUG_STIH418_SBC_ASC0
1156 bool "Use StiH418 SBC ASC0 UART for low-level debug"
1159 Say Y here if you want kernel low-level debugging support
1160 on STiH418 based platforms which has default UART wired
1165 config STM32F4_DEBUG_UART
1166 bool "Use STM32F4 UART for low-level debug"
1167 depends on MACH_STM32F429 || MACH_STM32F469
1168 select DEBUG_STM32_UART
1170 Say Y here if you want kernel low-level debugging support
1171 on STM32F4 based platforms, which default UART is wired on
1172 USART1, but another UART instance can be selected by modifying
1173 CONFIG_DEBUG_UART_PHYS.
1177 config STM32F7_DEBUG_UART
1178 bool "Use STM32F7 UART for low-level debug"
1179 depends on MACH_STM32F746 || MACH_STM32F769
1180 select DEBUG_STM32_UART
1182 Say Y here if you want kernel low-level debugging support
1183 on STM32F7 based platforms, which default UART is wired on
1184 USART1, but another UART instance can be selected by modifying
1185 CONFIG_DEBUG_UART_PHYS.
1189 config STM32H7_DEBUG_UART
1190 bool "Use STM32H7 UART for low-level debug"
1191 depends on MACH_STM32H743
1192 select DEBUG_STM32_UART
1194 Say Y here if you want kernel low-level debugging support
1195 on STM32H7 based platforms, which default UART is wired on
1196 USART1, but another UART instance can be selected by modifying
1197 CONFIG_DEBUG_UART_PHYS.
1201 config STM32MP1_DEBUG_UART
1202 bool "Use STM32MP1 UART for low-level debug"
1203 depends on MACH_STM32MP157
1204 select DEBUG_STM32_UART
1206 Say Y here if you want kernel low-level debugging support on
1207 STM32MP1-based platforms, where the default UART is wired to
1208 UART4, but another UART instance can be selected by modifying
1209 CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT.
1213 config TEGRA_DEBUG_UART_AUTO_ODMDATA
1214 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
1215 depends on ARCH_TEGRA
1216 select DEBUG_TEGRA_UART
1218 Automatically determines which UART to use for low-level
1219 debug based on the ODMDATA value. This value is part of
1220 the BCT, and is written to the boot memory device using
1221 nvflash, or other flashing tool. When bits 19:18 are 3,
1222 then bits 17:15 indicate which UART to use; 0/1/2/3/4
1225 config TEGRA_DEBUG_UARTA
1226 bool "Kernel low-level debugging messages via Tegra UART A"
1227 depends on ARCH_TEGRA
1228 select DEBUG_TEGRA_UART
1230 Say Y here if you want kernel low-level debugging support
1231 on Tegra based platforms.
1233 config TEGRA_DEBUG_UARTB
1234 bool "Kernel low-level debugging messages via Tegra UART B"
1235 depends on ARCH_TEGRA
1236 select DEBUG_TEGRA_UART
1238 Say Y here if you want kernel low-level debugging support
1239 on Tegra based platforms.
1241 config TEGRA_DEBUG_UARTC
1242 bool "Kernel low-level debugging messages via Tegra UART C"
1243 depends on ARCH_TEGRA
1244 select DEBUG_TEGRA_UART
1246 Say Y here if you want kernel low-level debugging support
1247 on Tegra based platforms.
1249 config TEGRA_DEBUG_UARTD
1250 bool "Kernel low-level debugging messages via Tegra UART D"
1251 depends on ARCH_TEGRA
1252 select DEBUG_TEGRA_UART
1254 Say Y here if you want kernel low-level debugging support
1255 on Tegra based platforms.
1257 config TEGRA_DEBUG_UARTE
1258 bool "Kernel low-level debugging messages via Tegra UART E"
1259 depends on ARCH_TEGRA
1260 select DEBUG_TEGRA_UART
1262 Say Y here if you want kernel low-level debugging support
1263 on Tegra based platforms.
1265 config DEBUG_UX500_UART
1266 depends on ARCH_U8500
1267 bool "Use Ux500 UART for low-level debug"
1269 Say Y here if you want kernel low-level debugging support
1270 on Ux500 based platforms.
1272 config DEBUG_VERSATILE
1273 bool "Kernel low-level debugging messages via ARM Versatile UART"
1274 depends on ARCH_VERSATILE
1275 select DEBUG_UART_PL01X
1277 Say Y here if you want kernel low-level debugging support
1278 on ARM Versatile platforms.
1280 config DEBUG_VEXPRESS_UART0_DETECT
1281 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
1282 depends on ARCH_VEXPRESS && CPU_CP15_MMU
1284 This option enables a simple heuristic which tries to determine
1285 the motherboard's memory map variant (original or RS1) and then
1286 choose the relevant UART0 base address.
1288 Note that this will only work with standard A-class core tiles,
1289 and may fail with non-standard SMM or custom software models.
1291 config DEBUG_VEXPRESS_UART0_CA9
1292 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
1293 depends on ARCH_VEXPRESS
1294 select DEBUG_UART_PL01X
1296 This option selects UART0 at 0x10009000. Except for custom models,
1297 this applies only to the V2P-CA9 tile.
1299 config DEBUG_VEXPRESS_UART0_RS1
1300 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
1301 depends on ARCH_VEXPRESS
1302 select DEBUG_UART_PL01X
1304 This option selects UART0 at 0x1c090000. This applies to most
1305 of the tiles using the RS1 memory map, including all new A-class
1306 core tiles, FPGA-based SMMs and software models.
1308 config DEBUG_VEXPRESS_UART0_CRX
1309 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
1310 depends on ARCH_VEXPRESS && !MMU
1311 select DEBUG_UART_PL01X
1313 This option selects UART0 at 0xb0090000. This is appropriate for
1314 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
1316 config DEBUG_VF_UART
1318 depends on SOC_VF610
1320 Say Y here if you want kernel low-level debugging support
1321 on Vybrid based platforms.
1323 config DEBUG_VT8500_UART0
1324 bool "Use UART0 on VIA/Wondermedia SoCs"
1325 depends on ARCH_VT8500
1327 This option selects UART0 on VIA/Wondermedia System-on-a-chip
1328 devices, including VT8500, WM8505, WM8650 and WM8850.
1330 config DEBUG_ZYNQ_UART0
1331 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
1332 depends on ARCH_ZYNQ
1334 Say Y here if you want the debug print routines to direct
1335 their output to UART0 on the Zynq platform.
1337 config DEBUG_ZYNQ_UART1
1338 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
1339 depends on ARCH_ZYNQ
1341 Say Y here if you want the debug print routines to direct
1342 their output to UART1 on the Zynq platform.
1344 If you have a ZC702 board and want early boot messages to
1345 appear on the USB serial adaptor, select this option.
1348 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
1350 Say Y here if you want the debug print routines to direct
1351 their output to the EmbeddedICE macrocell's DCC channel using
1352 co-processor 14. This is known to work on the ARM9 style ICE
1353 channel and on the XScale with the PEEDI.
1355 Note that the system will appear to hang during boot if there
1356 is nothing connected to read from the DCC.
1358 config DEBUG_SEMIHOSTING
1359 bool "Kernel low-level debug output via semihosting I/O"
1361 Semihosting enables code running on an ARM target to use
1362 the I/O facilities on a host debugger/emulator through a
1363 simple SVC call. The host debugger or emulator must have
1364 semihosting enabled for the special svc call to be trapped
1365 otherwise the kernel will crash.
1367 This is known to work with OpenOCD, as well as
1368 ARM's Fast Models, or any other controlling environment
1369 that implements semihosting.
1371 For more details about semihosting, please see
1372 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
1374 config DEBUG_LL_UART_8250
1375 bool "Kernel low-level debugging via 8250 UART"
1377 Say Y here if you wish the debug print routes to direct
1378 their output to an 8250 UART. You can use this option
1379 to provide the parameters for the 8250 UART rather than
1380 selecting one of the platform specific options above if
1381 you know the parameters for the port.
1383 This option is preferred over the platform specific
1384 options; the platform specific options are deprecated
1385 and will be soon removed.
1387 config DEBUG_LL_UART_PL01X
1388 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
1390 Say Y here if you wish the debug print routes to direct
1391 their output to a PL01x Primecell UART. You can use
1392 this option to provide the parameters for the UART
1393 rather than selecting one of the platform specific
1394 options above if you know the parameters for the port.
1396 This option is preferred over the platform specific
1397 options; the platform specific options are deprecated
1398 and will be soon removed.
1402 config DEBUG_AT91_UART
1404 depends on ARCH_AT91
1406 config DEBUG_EXYNOS_UART
1409 config DEBUG_S3C64XX_UART
1412 config DEBUG_S5PV210_UART
1415 config DEBUG_S3C_UART
1416 depends on DEBUG_S3C64XX_UART || DEBUG_S5PV210_UART || \
1419 default "0" if DEBUG_S3C_UART0
1420 default "1" if DEBUG_S3C_UART1
1421 default "2" if DEBUG_S3C_UART2
1422 default "3" if DEBUG_S3C_UART3
1424 config DEBUG_OMAP2PLUS_UART
1426 depends on ARCH_OMAP2PLUS
1428 config DEBUG_IMX_UART_PORT
1429 int "i.MX Debug UART Port Selection"
1430 depends on DEBUG_IMX1_UART || \
1431 DEBUG_IMX25_UART || \
1432 DEBUG_IMX27_UART || \
1433 DEBUG_IMX31_UART || \
1434 DEBUG_IMX35_UART || \
1435 DEBUG_IMX50_UART || \
1436 DEBUG_IMX51_UART || \
1437 DEBUG_IMX53_UART || \
1438 DEBUG_IMX6Q_UART || \
1439 DEBUG_IMX6SL_UART || \
1440 DEBUG_IMX6SX_UART || \
1441 DEBUG_IMX6UL_UART || \
1445 Choose UART port on which kernel low-level debug messages
1448 config DEBUG_VF_UART_PORT
1449 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1452 depends on SOC_VF610
1454 Choose UART port on which kernel low-level debug messages
1457 config DEBUG_TEGRA_UART
1459 depends on ARCH_TEGRA
1461 config DEBUG_STM32_UART
1463 depends on ARCH_STM32
1465 config DEBUG_UART_FLOW_CONTROL
1466 bool "Enable flow control (CTS) for the debug UART"
1468 default y if DEBUG_FOOTBRIDGE_COM1 || DEBUG_GEMINI || ARCH_RPC
1470 Some UART ports are connected to terminals that will use modem
1471 control signals to indicate whether they are ready to receive text.
1472 In practice this means that the terminal is asserting the special
1473 control signal CTS (Clear To Send). If your debug UART supports
1474 this and your debug terminal will require it, enable this option.
1476 config DEBUG_LL_INCLUDE
1478 default "debug/sa1100.S" if DEBUG_SA1100
1479 default "debug/palmchip.S" if DEBUG_UART_8250_PALMCHIP
1480 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1481 default "debug/at91.S" if DEBUG_AT91_UART
1482 default "debug/asm9260.S" if DEBUG_ASM9260_UART
1483 default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1484 default "debug/dc21285.S" if DEBUG_DC21285_PORT
1485 default "debug/meson.S" if DEBUG_MESON_UARTAO
1486 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1487 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1488 default "debug/icedcc.S" if DEBUG_ICEDCC
1489 default "debug/imx.S" if DEBUG_IMX1_UART || \
1490 DEBUG_IMX25_UART || \
1491 DEBUG_IMX27_UART || \
1492 DEBUG_IMX31_UART || \
1493 DEBUG_IMX35_UART || \
1494 DEBUG_IMX50_UART || \
1495 DEBUG_IMX51_UART || \
1496 DEBUG_IMX53_UART || \
1497 DEBUG_IMX6Q_UART || \
1498 DEBUG_IMX6SL_UART || \
1499 DEBUG_IMX6SX_UART || \
1500 DEBUG_IMX6UL_UART || \
1502 default "debug/msm.S" if DEBUG_QCOM_UARTDM
1503 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1504 default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
1505 default "debug/renesas-scif.S" if DEBUG_R7S9210_SCIF2
1506 default "debug/renesas-scif.S" if DEBUG_R7S9210_SCIF4
1507 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
1508 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF2
1509 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF0
1510 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF1
1511 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF2
1512 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF4
1513 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIFA2
1514 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA0
1515 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA1
1516 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
1517 default "debug/s3c24xx.S" if DEBUG_S3C64XX_UART
1518 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1519 default "debug/sti.S" if DEBUG_STIH41X_ASC2
1520 default "debug/sti.S" if DEBUG_STIH41X_SBC_ASC1
1521 default "debug/sti.S" if DEBUG_STIH418_SBC_ASC0
1522 default "debug/stm32.S" if DEBUG_STM32_UART
1523 default "debug/tegra.S" if DEBUG_TEGRA_UART
1524 default "debug/ux500.S" if DEBUG_UX500_UART
1525 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1526 default "debug/vf.S" if DEBUG_VF_UART
1527 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1528 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1529 default "debug/bcm63xx.S" if DEBUG_BCM63XX_UART
1530 default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0
1531 default "debug/brcmstb.S" if DEBUG_BRCMSTB_UART
1532 default "mach/debug-macro.S"
1534 # Compatibility options for PL01x
1535 config DEBUG_UART_PL01X
1538 # Compatibility options for 8250
1539 config DEBUG_UART_8250
1540 def_bool ARCH_IXP4XX || ARCH_RPC
1542 config DEBUG_UART_PHYS
1543 hex "Physical base address of debug UART"
1544 default 0x01c28000 if DEBUG_SUNXI_UART0
1545 default 0x01c28400 if DEBUG_SUNXI_UART1
1546 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1547 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1548 default 0x01f02800 if DEBUG_SUNXI_R_UART
1549 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1550 default 0x02531000 if DEBUG_KEYSTONE_UART1
1551 default 0x03010fe0 if ARCH_RPC
1552 default 0x07000000 if DEBUG_SUN9I_UART0
1553 default 0x09530000 if DEBUG_STIH418_SBC_ASC0
1554 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
1555 DEBUG_VEXPRESS_UART0_CA9
1556 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1557 default 0x10124000 if DEBUG_RK3X_UART0
1558 default 0x10126000 if DEBUG_RK3X_UART1
1559 default 0x101f1000 if DEBUG_VERSATILE
1560 default 0x101fb000 if DEBUG_NOMADIK_UART
1561 default 0x10210000 if DEBUG_RV1108_UART2
1562 default 0x10220000 if DEBUG_RV1108_UART1
1563 default 0x10230000 if DEBUG_RV1108_UART0
1564 default 0x11002000 if DEBUG_MT8127_UART0
1565 default 0x11006000 if DEBUG_MT6589_UART0
1566 default 0x11009000 if DEBUG_MT8135_UART3
1567 default 0x16000000 if DEBUG_INTEGRATOR
1568 default 0x1600d000 if DEBUG_SD5203_UART
1569 default 0x18000300 if DEBUG_BCM_5301X
1570 default 0x18000400 if DEBUG_BCM_HR2
1571 default 0x18023000 if DEBUG_BCM_IPROC_UART3
1572 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1573 default 0x1f221000 if DEBUG_MSTARV7_PMUART
1574 default 0x20001000 if DEBUG_HIP01_UART
1575 default 0x20060000 if DEBUG_RK29_UART0
1576 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1577 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1578 default 0x20201000 if DEBUG_BCM2835
1579 default 0x3e000000 if DEBUG_BCM_KONA_UART
1580 default 0x3f201000 if DEBUG_BCM2836
1581 default 0x40010000 if STM32MP1_DEBUG_UART
1582 default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
1584 default 0x40028000 if DEBUG_AT91_SAMV7_USART1
1585 default 0x40081000 if DEBUG_LPC18XX_UART0
1586 default 0x40090000 if DEBUG_LPC32XX
1587 default 0x40100000 if DEBUG_PXA_UART1
1588 default 0x42000000 if DEBUG_GEMINI
1589 default 0x44e09000 if DEBUG_AM33XXUART1
1590 default 0x48020000 if DEBUG_OMAP4UART3 || DEBUG_TI81XXUART1
1591 default 0x48022000 if DEBUG_TI81XXUART2
1592 default 0x48024000 if DEBUG_TI81XXUART3
1593 default 0x4806a000 if DEBUG_OMAP2UART1
1594 default 0x4806c000 if DEBUG_OMAP2UART2
1595 default 0x4806e000 if DEBUG_OMAP2UART3 || DEBUG_OMAP4UART4
1596 default 0x49020000 if DEBUG_OMAP3UART3
1597 default 0x49042000 if DEBUG_OMAP3UART4
1598 default 0x7c0003f8 if DEBUG_FOOTBRIDGE_COM1
1599 default 0x7f005000 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART0
1600 default 0x7f005400 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART1
1601 default 0x7f005800 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART2
1602 default 0x7f005c00 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART3
1603 default 0x80010000 if DEBUG_ASM9260_UART
1604 default 0x80070000 if DEBUG_IMX23_UART
1605 default 0x80074000 if DEBUG_IMX28_UART
1606 default 0x808c0000 if DEBUG_EP93XX || ARCH_EP93XX
1607 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1608 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1609 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1610 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1611 default 0xd0000000 if DEBUG_SPEAR3XX
1612 default 0xd0012000 if DEBUG_MVEBU_UART0
1613 default 0xc81004c0 if DEBUG_MESON_UARTAO
1614 default 0xd4017000 if DEBUG_MMP_UART2
1615 default 0xd4018000 if DEBUG_MMP_UART3
1616 default 0xe0000000 if DEBUG_SPEAR13XX
1617 default 0xe0064200 if DEBUG_AT91_LAN966_FLEXCOM
1618 default 0xe1824200 if DEBUG_AT91_SAMA7G5_FLEXCOM3
1619 default 0xe4007000 if DEBUG_HIP04_UART
1620 default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
1621 default 0xe6c50000 if DEBUG_RMOBILE_SCIFA1
1622 default 0xe6c60000 if DEBUG_RCAR_GEN2_SCIFA2
1623 default 0xe6c80000 if DEBUG_RMOBILE_SCIFA4
1624 default 0xe6e58000 if DEBUG_RCAR_GEN2_SCIF2
1625 default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
1626 default 0xe6e68000 if DEBUG_RCAR_GEN2_SCIF1
1627 default 0xe6ee0000 if DEBUG_RCAR_GEN2_SCIF4
1628 default 0xe8008000 if DEBUG_R7S72100_SCIF2 || DEBUG_R7S9210_SCIF2
1629 default 0xe8009000 if DEBUG_R7S9210_SCIF4
1630 default 0xf0000000 if DEBUG_DIGICOLOR_UA0
1631 default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
1632 default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
1633 default 0xf7fc9000 if DEBUG_BERLIN_UART
1634 default 0xf8020000 if DEBUG_AT91_SAMA5D2_UART1
1635 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1636 default 0xf991e000 if DEBUG_QCOM_UARTDM
1637 default 0xfc00c000 if DEBUG_AT91_SAMA5D4_USART3
1638 default 0xfcb00000 if DEBUG_HI3620_UART
1639 default 0xfd883000 if DEBUG_ALPINE_UART0
1640 default 0xfe531000 if DEBUG_STIH41X_SBC_ASC1
1641 default 0xfed32000 if DEBUG_STIH41X_ASC2
1642 default 0xff690000 if DEBUG_RK32_UART2
1643 default 0xffc02000 if DEBUG_SOCFPGA_UART0
1644 default 0xffc02100 if DEBUG_SOCFPGA_ARRIA10_UART1
1645 default 0xffc03000 if DEBUG_SOCFPGA_CYCLONE5_UART1
1646 default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
1647 default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
1648 default 0xfff36000 if DEBUG_HIGHBANK_UART
1649 default 0xfffb0000 if DEBUG_OMAP1UART1
1650 default 0xfffb0800 if DEBUG_OMAP1UART2
1651 default 0xfffb9800 if DEBUG_OMAP1UART3
1652 default 0xfffe8600 if DEBUG_BCM63XX_UART
1653 default 0xffffee00 if DEBUG_AT91_SAM9263_DBGU
1654 default 0xfffff200 if DEBUG_AT91_RM9200_DBGU
1655 depends on ARCH_EP93XX || \
1656 DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1657 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1658 DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
1659 DEBUG_R7S9210_SCIF2 || DEBUG_R7S9210_SCIF4 || \
1660 DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
1661 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF1 || \
1662 DEBUG_RCAR_GEN2_SCIF2 || DEBUG_RCAR_GEN2_SCIF4 || \
1663 DEBUG_RCAR_GEN2_SCIFA2 || \
1664 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
1665 DEBUG_RMOBILE_SCIFA4 || \
1666 DEBUG_S3C64XX_UART || \
1667 DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
1668 DEBUG_DIGICOLOR_UA0 || \
1669 DEBUG_AT91_UART || DEBUG_STM32_UART || \
1670 DEBUG_STIH41X_ASC2 || DEBUG_STIH41X_SBC_ASC1 || \
1671 DEBUG_STIH418_SBC_ASC0
1673 config DEBUG_UART_VIRT
1674 hex "Virtual base address of debug UART"
1675 default 0xc881f000 if DEBUG_RV1108_UART2
1676 default 0xc8821000 if DEBUG_RV1108_UART1
1677 default 0xc8912000 if DEBUG_RV1108_UART0
1678 default 0xe0010fe0 if ARCH_RPC
1679 default 0xe0824200 if DEBUG_AT91_SAMA7G5_FLEXCOM3
1680 default 0xf0010000 if DEBUG_ASM9260_UART
1681 default 0xf0100000 if DEBUG_DIGICOLOR_UA0
1682 default 0xf01fb000 if DEBUG_NOMADIK_UART
1683 default 0xf0201000 if DEBUG_BCM2835 || DEBUG_BCM2836
1684 default 0xf0221000 if DEBUG_MSTARV7_PMUART
1685 default 0xf1000300 if DEBUG_BCM_5301X
1686 default 0xf1000400 if DEBUG_BCM_HR2
1687 default 0xf1002000 if DEBUG_MT8127_UART0
1688 default 0xf1006000 if DEBUG_MT6589_UART0
1689 default 0xf1009000 if DEBUG_MT8135_UART3
1690 default 0xf1023000 if DEBUG_BCM_IPROC_UART3
1691 default 0xf11f1000 if DEBUG_VERSATILE
1692 default 0xf1600000 if DEBUG_INTEGRATOR
1693 default 0xf1c28000 if DEBUG_SUNXI_UART0
1694 default 0xf1c28400 if DEBUG_SUNXI_UART1
1695 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1696 default 0xf31004c0 if DEBUG_MESON_UARTAO
1697 default 0xf4090000 if DEBUG_LPC32XX
1698 default 0xf4200000 if DEBUG_GEMINI
1699 default 0xf6200000 if DEBUG_PXA_UART1
1700 default 0xf7000000 if DEBUG_SUN9I_UART0
1701 default 0xf7000000 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART0
1702 default 0xf7000400 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART1
1703 default 0xf7000800 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART2
1704 default 0xf7000c00 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART3
1705 default 0xf7020000 if DEBUG_AT91_SAMA5D2_UART1
1706 default 0xf7fc9000 if DEBUG_BERLIN_UART
1707 default 0xf8007000 if DEBUG_HIP04_UART
1708 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1709 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1710 default 0xf8ffee00 if DEBUG_AT91_SAM9263_DBGU
1711 default 0xf8fff200 if DEBUG_AT91_RM9200_DBGU
1712 default 0xf9530000 if DEBUG_STIH418_SBC_ASC0
1713 default 0xf9e09000 if DEBUG_AM33XXUART1
1714 default 0xfa020000 if DEBUG_OMAP4UART3 || DEBUG_TI81XXUART1
1715 default 0xfa022000 if DEBUG_TI81XXUART2
1716 default 0xfa024000 if DEBUG_TI81XXUART3
1717 default 0xfa06a000 if DEBUG_OMAP2UART1
1718 default 0xfa06c000 if DEBUG_OMAP2UART2
1719 default 0xfa06e000 if DEBUG_OMAP2UART3 || DEBUG_OMAP4UART4
1720 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1721 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1722 default 0xfb00c000 if DEBUG_AT91_SAMA5D4_USART3
1723 default 0xfb020000 if DEBUG_OMAP3UART3
1724 default 0xfb042000 if DEBUG_OMAP3UART4
1725 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1726 default 0xfcfe8600 if DEBUG_BCM63XX_UART
1727 default 0xfd000000 if DEBUG_SPEAR3XX || DEBUG_SPEAR13XX
1728 default 0xfd064200 if DEBUG_AT91_LAN966_FLEXCOM
1729 default 0xfd531000 if DEBUG_STIH41X_SBC_ASC1
1730 default 0xfd883000 if DEBUG_ALPINE_UART0
1731 default 0xfdd32000 if DEBUG_STIH41X_ASC2
1732 default 0xfe010000 if STM32MP1_DEBUG_UART
1733 default 0xfe017000 if DEBUG_MMP_UART2
1734 default 0xfe018000 if DEBUG_MMP_UART3
1735 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1736 default 0xfe300000 if DEBUG_BCM_KONA_UART
1737 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1738 default 0xfeb24000 if DEBUG_RK3X_UART0
1739 default 0xfeb26000 if DEBUG_RK3X_UART1
1740 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1741 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1742 default 0xfec02000 if DEBUG_SOCFPGA_UART0
1743 default 0xfec02100 if DEBUG_SOCFPGA_ARRIA10_UART1
1744 default 0xfec03000 if DEBUG_SOCFPGA_CYCLONE5_UART1
1745 default 0xfec12000 if DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE
1746 default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
1747 default 0xfec90000 if DEBUG_RK32_UART2
1748 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1749 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_SD5203_UART
1750 default 0xfed60000 if DEBUG_RK29_UART0
1751 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1752 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1753 default 0xfedc0000 if DEBUG_EP93XX
1754 default 0xfee003f8 if DEBUG_FOOTBRIDGE_COM1
1755 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1756 default 0xfec00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1757 default 0xfec00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1758 default 0xfef36000 if DEBUG_HIGHBANK_UART
1759 default 0xff0b0000 if DEBUG_OMAP1UART1
1760 default 0xff0b0800 if DEBUG_OMAP1UART2
1761 default 0xff0b9800 if DEBUG_OMAP1UART3
1762 default 0xffd01000 if DEBUG_HIP01_UART
1763 default DEBUG_UART_PHYS if !MMU
1764 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1765 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1766 DEBUG_QCOM_UARTDM || \
1767 DEBUG_S3C64XX_UART || \
1768 DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
1769 DEBUG_DIGICOLOR_UA0 || \
1770 DEBUG_AT91_UART || DEBUG_STM32_UART || \
1771 DEBUG_STIH41X_ASC2 || DEBUG_STIH41X_SBC_ASC1 || \
1772 DEBUG_STIH418_SBC_ASC0
1774 config DEBUG_UART_8250_SHIFT
1775 int "Register offset shift for the 8250 debug UART"
1776 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1777 default 0 if DEBUG_FOOTBRIDGE_COM1 || DEBUG_BCM_5301X || \
1779 default 3 if DEBUG_MSTARV7_PMUART
1782 config DEBUG_UART_8250_WORD
1783 bool "Use 32-bit accesses for 8250 UART"
1784 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1785 depends on DEBUG_UART_8250_SHIFT >= 2
1786 default y if DEBUG_SOCFPGA_UART0 || DEBUG_SOCFPGA_ARRIA10_UART1 || \
1787 DEBUG_SOCFPGA_CYCLONE5_UART1 || DEBUG_KEYSTONE_UART0 || \
1788 DEBUG_KEYSTONE_UART1 || DEBUG_ALPINE_UART0 || \
1789 DEBUG_DAVINCI_DA8XX_UART1 || DEBUG_DAVINCI_DA8XX_UART2 || \
1790 DEBUG_BCM_IPROC_UART3 || DEBUG_BCM_KONA_UART || \
1793 config DEBUG_UART_8250_PALMCHIP
1794 bool "8250 UART is Palmchip BK-310x"
1795 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1797 Palmchip provides a UART implementation compatible with 16550
1798 except for having a different register layout. Say Y here if
1799 the debug UART is of this type.
1801 config DEBUG_UNCOMPRESS
1802 bool "Enable decompressor debugging via DEBUG_LL output"
1803 depends on !ARCH_MULTIPLATFORM
1804 depends on !(ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100)
1805 depends on DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1806 (!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
1807 !DEBUG_BRCMSTB_UART && !DEBUG_SEMIHOSTING
1809 Say Y here to enable debug output in the decompressor code, using
1810 the selected DEBUG_LL output method.
1812 config UNCOMPRESS_INCLUDE
1814 default "mach/uncompress.h" if ARCH_FOOTBRIDGE || ARCH_RPC || ARCH_SA1100
1815 default "debug/uncompress.h"
1821 Say Y here if you want to have an early console using the
1822 kernel low-level debugging functions. Add earlyprintk to your
1823 kernel parameters to enable this console.
1825 config ARM_KPROBES_TEST
1826 tristate "Kprobes test module"
1827 depends on KPROBES && MODULES
1829 Perform tests of kprobes API and instruction set simulation.
1831 config PID_IN_CONTEXTIDR
1832 bool "Write the current PID to the CONTEXTIDR register"
1833 depends on CPU_COPY_V6
1835 Enabling this option causes the kernel to write the current PID to
1836 the PROCID field of the CONTEXTIDR register, at the expense of some
1837 additional instructions during context switch. Say Y here only if you
1838 are planning to use hardware trace tools with this kernel.
1840 source "drivers/hwtracing/coresight/Kconfig"