3 source "lib/Kconfig.debug"
6 bool "Export kernel pagetable layout to userspace via debugfs"
7 depends on DEBUG_KERNEL
10 Say Y here if you want to show the kernel pagetable layout in a
11 debugfs file. This information is only useful for kernel developers
12 who are working in architecture specific areas of the kernel.
13 It is probably not a good idea to enable this feature in a production
18 bool "Filter access to /dev/mem"
21 If this option is disabled, you allow userspace (root) access to all
22 of memory, including kernel and userspace memory. Accidental
23 access to this is obviously disastrous, but specific access can
24 be used by people debugging the kernel.
26 If this option is switched on, the /dev/mem file only allows
27 userspace access to memory mapped peripherals.
31 # RMK wants arm kernels compiled with frame pointers or stack unwinding.
32 # If you know what you are doing and are willing to live without stack
33 # traces, you can get a slightly smaller kernel by setting this option to
34 # n, but then RMK will have to kill you ;).
37 depends on !THUMB2_KERNEL
38 default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
40 If you say N here, the resulting kernel will be slightly smaller and
41 faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
42 when a problem occurs with the kernel, the information that is
43 reported is severely limited.
46 bool "Enable stack unwinding support (EXPERIMENTAL)"
50 This option enables stack unwinding support in the kernel
51 using the information automatically generated by the
52 compiler. The resulting kernel image is slightly bigger but
53 the performance is not affected. Currently, this feature
54 only works with EABI compilers. If unsure say Y.
58 depends on FUNCTION_TRACER && FRAME_POINTER
62 bool "Verbose user fault messages"
64 When a user program crashes due to an exception, the kernel can
65 print a brief message explaining what the problem was. This is
66 sometimes helpful for debugging but serves no purpose on a
67 production system. Most people should say N here.
69 In addition, you need to pass user_debug=N on the kernel command
70 line to enable this feature. N consists of the sum of:
72 1 - undefined instruction events
74 4 - invalid data aborts
78 # These options are only for real kernel hackers who want to get their hands dirty.
80 bool "Kernel low-level debugging functions (read help!)"
81 depends on DEBUG_KERNEL
83 Say Y here to include definitions of printascii, printch, printhex
84 in the kernel. This is helpful if you are debugging code that
85 executes before the console is initialized.
87 Note that selecting this option will limit the kernel to a single
88 UART definition, as specified below. Attempting to boot the kernel
89 image on a different platform *will not work*, so this option should
90 not be enabled for kernels that are intended to be portable.
93 prompt "Kernel low-level debugging port"
96 config DEBUG_ASM9260_UART
97 bool "Kernel low-level debugging via asm9260 UART"
98 depends on MACH_ASM9260
100 Say Y here if you want the debug print routines to direct
101 their output to an UART or USART port on asm9260 based
104 DEBUG_UART_PHYS | DEBUG_UART_VIRT
106 0x80000000 | 0xf0000000 | UART0
107 0x80004000 | 0xf0004000 | UART1
108 0x80008000 | 0xf0008000 | UART2
109 0x8000c000 | 0xf000c000 | UART3
110 0x80010000 | 0xf0010000 | UART4
111 0x80014000 | 0xf0014000 | UART5
112 0x80018000 | 0xf0018000 | UART6
113 0x8001c000 | 0xf001c000 | UART7
114 0x80020000 | 0xf0020000 | UART8
115 0x80024000 | 0xf0024000 | UART9
117 config AT91_DEBUG_LL_DBGU0
118 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10, 9rl, 9x5, 9n12"
119 select DEBUG_AT91_UART
120 depends on HAVE_AT91_DBGU0
122 config AT91_DEBUG_LL_DBGU1
123 bool "Kernel low-level debugging on 9263, 9g45 and sama5d3"
124 select DEBUG_AT91_UART
125 depends on HAVE_AT91_DBGU1
127 config AT91_DEBUG_LL_DBGU2
128 bool "Kernel low-level debugging on sama5d4"
129 select DEBUG_AT91_UART
130 depends on HAVE_AT91_DBGU2
133 bool "Kernel low-level debugging on BCM2835 PL011 UART"
134 depends on ARCH_BCM2835
135 select DEBUG_UART_PL01X
137 config DEBUG_BCM_5301X
138 bool "Kernel low-level debugging on BCM5301X UART1"
139 depends on ARCH_BCM_5301X
140 select DEBUG_UART_8250
142 config DEBUG_BCM_KONA_UART
143 bool "Kernel low-level debugging messages via BCM KONA UART"
144 depends on ARCH_BCM_MOBILE
145 select DEBUG_UART_8250
147 Say Y here if you want kernel low-level debugging support
148 on Broadcom SoC platforms.
149 This low level debug works for Broadcom
150 mobile SoCs in the Kona family of chips (e.g. bcm28155,
154 bool "Kernel low-level debugging on BCM63XX UART"
155 depends on ARCH_BCM_63XX
156 select DEBUG_UART_BCM63XX
158 config DEBUG_BERLIN_UART
159 bool "Marvell Berlin SoC Debug UART"
160 depends on ARCH_BERLIN
161 select DEBUG_UART_8250
163 Say Y here if you want kernel low-level debugging support
164 on Marvell Berlin SoC based platforms.
166 config DEBUG_BRCMSTB_UART
167 bool "Use BRCMSTB UART for low-level debug"
168 depends on ARCH_BRCMSTB
169 select DEBUG_UART_8250
171 Say Y here if you want the debug print routines to direct
172 their output to the first serial port on these devices.
174 If you have a Broadcom STB chip and would like early print
175 messages to appear over the UART, select this option.
177 config DEBUG_CLPS711X_UART1
178 bool "Kernel low-level debugging messages via UART1"
179 depends on ARCH_CLPS711X
181 Say Y here if you want the debug print routines to direct
182 their output to the first serial port on these devices.
184 config DEBUG_CLPS711X_UART2
185 bool "Kernel low-level debugging messages via UART2"
186 depends on ARCH_CLPS711X
188 Say Y here if you want the debug print routines to direct
189 their output to the second serial port on these devices.
192 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
193 depends on ARCH_CNS3XXX
194 select DEBUG_UART_8250
196 Say Y here if you want the debug print routines to direct
197 their output to the CNS3xxx UART0.
199 config DEBUG_DAVINCI_DA8XX_UART1
200 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
201 depends on ARCH_DAVINCI_DA8XX
202 select DEBUG_UART_8250
204 Say Y here if you want the debug print routines to direct
205 their output to UART1 serial port on DaVinci DA8XX devices.
207 config DEBUG_DAVINCI_DA8XX_UART2
208 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
209 depends on ARCH_DAVINCI_DA8XX
210 select DEBUG_UART_8250
212 Say Y here if you want the debug print routines to direct
213 their output to UART2 serial port on DaVinci DA8XX devices.
215 config DEBUG_DAVINCI_DMx_UART0
216 bool "Kernel low-level debugging on DaVinci DMx using UART0"
217 depends on ARCH_DAVINCI_DMx
218 select DEBUG_UART_8250
220 Say Y here if you want the debug print routines to direct
221 their output to UART0 serial port on DaVinci DMx devices.
223 config DEBUG_ZYNQ_UART0
224 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
227 Say Y here if you want the debug print routines to direct
228 their output to UART0 on the Zynq platform.
230 config DEBUG_ZYNQ_UART1
231 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
234 Say Y here if you want the debug print routines to direct
235 their output to UART1 on the Zynq platform.
237 If you have a ZC702 board and want early boot messages to
238 appear on the USB serial adaptor, select this option.
240 config DEBUG_DC21285_PORT
241 bool "Kernel low-level debugging messages via footbridge serial port"
242 depends on FOOTBRIDGE
244 Say Y here if you want the debug print routines to direct
245 their output to the serial port in the DC21285 (Footbridge).
247 config DEBUG_FOOTBRIDGE_COM1
248 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
249 depends on FOOTBRIDGE
251 Say Y here if you want the debug print routines to direct
252 their output to the 8250 at PCI COM1.
254 config DEBUG_HI3620_UART
255 bool "Hisilicon HI3620 Debug UART"
256 depends on ARCH_HI3xxx
257 select DEBUG_UART_PL01X
259 Say Y here if you want kernel low-level debugging support
262 config DEBUG_HI3716_UART
263 bool "Hisilicon Hi3716 Debug UART"
264 depends on ARCH_HI3xxx
265 select DEBUG_UART_PL01X
267 Say Y here if you want kernel low-level debugging support
270 config DEBUG_HIGHBANK_UART
271 bool "Kernel low-level debugging messages via Highbank UART"
272 depends on ARCH_HIGHBANK
273 select DEBUG_UART_PL01X
275 Say Y here if you want the debug print routines to direct
276 their output to the UART on Highbank based devices.
278 config DEBUG_HIP01_UART
279 bool "Hisilicon Hip01 Debug UART"
280 depends on ARCH_HIP01
281 select DEBUG_UART_8250
283 Say Y here if you want kernel low-level debugging support
286 config DEBUG_HIP04_UART
287 bool "Hisilicon HiP04 Debug UART"
288 depends on ARCH_HIP04
289 select DEBUG_UART_8250
291 Say Y here if you want kernel low-level debugging support
294 config DEBUG_HIX5HD2_UART
295 bool "Hisilicon Hix5hd2 Debug UART"
296 depends on ARCH_HIX5HD2
297 select DEBUG_UART_PL01X
299 Say Y here if you want kernel low-level debugging support
302 config DEBUG_IMX1_UART
303 bool "i.MX1 Debug UART"
306 Say Y here if you want kernel low-level debugging support
309 config DEBUG_IMX23_UART
310 bool "i.MX23 Debug UART"
312 select DEBUG_UART_PL01X
314 Say Y here if you want kernel low-level debugging support
317 config DEBUG_IMX25_UART
318 bool "i.MX25 Debug UART"
321 Say Y here if you want kernel low-level debugging support
324 config DEBUG_IMX21_IMX27_UART
325 bool "i.MX21 and i.MX27 Debug UART"
326 depends on SOC_IMX21 || SOC_IMX27
328 Say Y here if you want kernel low-level debugging support
331 config DEBUG_IMX28_UART
332 bool "i.MX28 Debug UART"
334 select DEBUG_UART_PL01X
336 Say Y here if you want kernel low-level debugging support
339 config DEBUG_IMX31_UART
340 bool "i.MX31 Debug UART"
343 Say Y here if you want kernel low-level debugging support
346 config DEBUG_IMX35_UART
347 bool "i.MX35 Debug UART"
350 Say Y here if you want kernel low-level debugging support
353 config DEBUG_IMX50_UART
354 bool "i.MX50 Debug UART"
357 Say Y here if you want kernel low-level debugging support
360 config DEBUG_IMX51_UART
361 bool "i.MX51 Debug UART"
364 Say Y here if you want kernel low-level debugging support
367 config DEBUG_IMX53_UART
368 bool "i.MX53 Debug UART"
371 Say Y here if you want kernel low-level debugging support
374 config DEBUG_IMX6Q_UART
375 bool "i.MX6Q/DL Debug UART"
378 Say Y here if you want kernel low-level debugging support
381 config DEBUG_IMX6SL_UART
382 bool "i.MX6SL Debug UART"
383 depends on SOC_IMX6SL
385 Say Y here if you want kernel low-level debugging support
388 config DEBUG_IMX6SX_UART
389 bool "i.MX6SX Debug UART"
390 depends on SOC_IMX6SX
392 Say Y here if you want kernel low-level debugging support
395 config DEBUG_KEYSTONE_UART0
396 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
397 depends on ARCH_KEYSTONE
398 select DEBUG_UART_8250
400 Say Y here if you want the debug print routines to direct
401 their output to UART0 serial port on KEYSTONE2 devices.
403 config DEBUG_KEYSTONE_UART1
404 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
405 depends on ARCH_KEYSTONE
406 select DEBUG_UART_8250
408 Say Y here if you want the debug print routines to direct
409 their output to UART1 serial port on KEYSTONE2 devices.
411 config DEBUG_MESON_UARTAO
412 bool "Kernel low-level debugging via Meson6 UARTAO"
413 depends on ARCH_MESON
415 Say Y here if you want kernel low-lever debugging support
416 on Amlogic Meson6 based platforms on the UARTAO.
418 config DEBUG_MMP_UART2
419 bool "Kernel low-level debugging message via MMP UART2"
421 select DEBUG_UART_8250
423 Say Y here if you want kernel low-level debugging support
426 config DEBUG_MMP_UART3
427 bool "Kernel low-level debugging message via MMP UART3"
429 select DEBUG_UART_8250
431 Say Y here if you want kernel low-level debugging support
434 config DEBUG_MSM_UART
435 bool "Kernel low-level debugging messages via MSM UART"
438 Say Y here if you want the debug print routines to direct
439 their output to the serial port on MSM devices.
441 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE #
442 MSM7X00A, QSD8X50 0xa9a00000 0xe1000000 UART1
443 MSM7X00A, QSD8X50 0xa9b00000 0xe1000000 UART2
444 MSM7X00A, QSD8X50 0xa9c00000 0xe1000000 UART3
446 MSM7X30 0xaca00000 0xe1000000 UART1
447 MSM7X30 0xacb00000 0xe1000000 UART2
448 MSM7X30 0xacc00000 0xe1000000 UART3
450 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
451 options based on your needs.
453 config DEBUG_QCOM_UARTDM
454 bool "Kernel low-level debugging messages via QCOM UARTDM"
457 Say Y here if you want the debug print routines to direct
458 their output to the serial port on Qualcomm devices.
460 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE
461 APQ8084 0xf995e000 0xfa75e000
462 MSM8X60 0x19c40000 0xf0040000
463 MSM8960 0x16440000 0xf0040000
464 MSM8974 0xf991e000 0xfa71e000
466 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
467 options based on your needs.
469 config DEBUG_MVEBU_UART0
470 bool "Kernel low-level debugging messages via MVEBU UART0 (old bootloaders)"
471 depends on ARCH_MVEBU
472 select DEBUG_UART_8250
474 Say Y here if you want kernel low-level debugging support
475 on MVEBU based platforms on UART0.
477 This option should be used with the old bootloaders
478 that left the internal registers mapped at
479 0xd0000000. As of today, this is the case on
480 platforms such as the Globalscale Mirabox or the
481 Plathome OpenBlocks AX3, when using the original
484 If the wrong DEBUG_MVEBU_UART* option is selected,
485 when u-boot hands over to the kernel, the system
486 silently crashes, with no serial output at all.
488 config DEBUG_MVEBU_UART0_ALTERNATE
489 bool "Kernel low-level debugging messages via MVEBU UART0 (new bootloaders)"
490 depends on ARCH_MVEBU
491 select DEBUG_UART_8250
493 Say Y here if you want kernel low-level debugging support
494 on MVEBU based platforms on UART0.
496 This option should be used with the new bootloaders
497 that remap the internal registers at 0xf1000000.
499 If the wrong DEBUG_MVEBU_UART* option is selected,
500 when u-boot hands over to the kernel, the system
501 silently crashes, with no serial output at all.
503 config DEBUG_MVEBU_UART1_ALTERNATE
504 bool "Kernel low-level debugging messages via MVEBU UART1 (new bootloaders)"
505 depends on ARCH_MVEBU
506 select DEBUG_UART_8250
508 Say Y here if you want kernel low-level debugging support
509 on MVEBU based platforms on UART1.
511 This option should be used with the new bootloaders
512 that remap the internal registers at 0xf1000000.
514 If the wrong DEBUG_MVEBU_UART* option is selected,
515 when u-boot hands over to the kernel, the system
516 silently crashes, with no serial output at all.
522 Say Y here if you want kernel low-level debugging support
523 on Vybrid based platforms.
525 config DEBUG_NOMADIK_UART
526 bool "Kernel low-level debugging messages via NOMADIK UART"
527 depends on ARCH_NOMADIK
528 select DEBUG_UART_PL01X
530 Say Y here if you want kernel low-level debugging support
531 on NOMADIK based platforms.
533 config DEBUG_NSPIRE_CLASSIC_UART
534 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
535 depends on ARCH_NSPIRE
536 select DEBUG_UART_8250
538 Say Y here if you want kernel low-level debugging support
539 on TI-NSPIRE classic models.
541 config DEBUG_NSPIRE_CX_UART
542 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
543 depends on ARCH_NSPIRE
544 select DEBUG_UART_PL01X
546 Say Y here if you want kernel low-level debugging support
547 on TI-NSPIRE CX models.
549 config DEBUG_OMAP2UART1
550 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
551 depends on ARCH_OMAP2PLUS
552 select DEBUG_OMAP2PLUS_UART
554 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
555 omap3 torpedo and 3530 lv som.
557 config DEBUG_OMAP2UART2
558 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
559 depends on ARCH_OMAP2PLUS
560 select DEBUG_OMAP2PLUS_UART
562 config DEBUG_OMAP2UART3
563 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
564 depends on ARCH_OMAP2PLUS
565 select DEBUG_OMAP2PLUS_UART
567 config DEBUG_OMAP3UART3
568 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
569 depends on ARCH_OMAP2PLUS
570 select DEBUG_OMAP2PLUS_UART
572 This covers at least cm_t3x, beagle, crane, devkit8000,
573 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
576 config DEBUG_OMAP4UART3
577 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
578 depends on ARCH_OMAP2PLUS
579 select DEBUG_OMAP2PLUS_UART
581 config DEBUG_OMAP3UART4
582 bool "Kernel low-level debugging messages via OMAP36XX UART4"
583 depends on ARCH_OMAP2PLUS
584 select DEBUG_OMAP2PLUS_UART
586 config DEBUG_OMAP4UART4
587 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
588 depends on ARCH_OMAP2PLUS
589 select DEBUG_OMAP2PLUS_UART
591 config DEBUG_TI81XXUART1
592 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
593 depends on ARCH_OMAP2PLUS
594 select DEBUG_OMAP2PLUS_UART
596 config DEBUG_TI81XXUART2
597 bool "Kernel low-level debugging messages via TI81XX UART2"
598 depends on ARCH_OMAP2PLUS
599 select DEBUG_OMAP2PLUS_UART
601 config DEBUG_TI81XXUART3
602 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
603 depends on ARCH_OMAP2PLUS
604 select DEBUG_OMAP2PLUS_UART
606 config DEBUG_AM33XXUART1
607 bool "Kernel low-level debugging messages via AM33XX UART1"
608 depends on ARCH_OMAP2PLUS
609 select DEBUG_OMAP2PLUS_UART
611 config DEBUG_ZOOM_UART
612 bool "Kernel low-level debugging messages via Zoom2/3 UART"
613 depends on ARCH_OMAP2PLUS
614 select DEBUG_OMAP2PLUS_UART
616 config DEBUG_PICOXCELL_UART
617 depends on ARCH_PICOXCELL
618 bool "Use PicoXcell UART for low-level debug"
619 select DEBUG_UART_8250
621 Say Y here if you want kernel low-level debugging support
622 on PicoXcell based platforms.
624 config DEBUG_PXA_UART1
626 bool "Use PXA UART1 for low-level debug"
627 select DEBUG_UART_8250
629 Say Y here if you want kernel low-level debugging support
632 config DEBUG_REALVIEW_STD_PORT
633 bool "RealView Default UART"
634 depends on ARCH_REALVIEW
635 select DEBUG_UART_PL01X
637 Say Y here if you want the debug print routines to direct
638 their output to the serial port on RealView EB, PB11MP, PBA8
641 config DEBUG_REALVIEW_PB1176_PORT
642 bool "RealView PB1176 UART"
643 depends on MACH_REALVIEW_PB1176
644 select DEBUG_UART_PL01X
646 Say Y here if you want the debug print routines to direct
647 their output to the standard serial port on the RealView
650 config DEBUG_RK29_UART0
651 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
652 depends on ARCH_ROCKCHIP
653 select DEBUG_UART_8250
655 Say Y here if you want kernel low-level debugging support
656 on Rockchip based platforms.
658 config DEBUG_RK29_UART1
659 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
660 depends on ARCH_ROCKCHIP
661 select DEBUG_UART_8250
663 Say Y here if you want kernel low-level debugging support
664 on Rockchip based platforms.
666 config DEBUG_RK29_UART2
667 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
668 depends on ARCH_ROCKCHIP
669 select DEBUG_UART_8250
671 Say Y here if you want kernel low-level debugging support
672 on Rockchip based platforms.
674 config DEBUG_RK3X_UART0
675 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
676 depends on ARCH_ROCKCHIP
677 select DEBUG_UART_8250
679 Say Y here if you want kernel low-level debugging support
680 on Rockchip based platforms.
682 config DEBUG_RK3X_UART1
683 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
684 depends on ARCH_ROCKCHIP
685 select DEBUG_UART_8250
687 Say Y here if you want kernel low-level debugging support
688 on Rockchip based platforms.
690 config DEBUG_RK3X_UART2
691 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
692 depends on ARCH_ROCKCHIP
693 select DEBUG_UART_8250
695 Say Y here if you want kernel low-level debugging support
696 on Rockchip based platforms.
698 config DEBUG_RK3X_UART3
699 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
700 depends on ARCH_ROCKCHIP
701 select DEBUG_UART_8250
703 Say Y here if you want kernel low-level debugging support
704 on Rockchip based platforms.
706 config DEBUG_RK32_UART2
707 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
708 depends on ARCH_ROCKCHIP
709 select DEBUG_UART_8250
711 Say Y here if you want kernel low-level debugging support
712 on Rockchip RK32xx based platforms.
714 config DEBUG_R7S72100_SCIF2
715 bool "Kernel low-level debugging messages via SCIF2 on R7S72100"
716 depends on ARCH_R7S72100
718 Say Y here if you want kernel low-level debugging support
719 via SCIF2 on Renesas RZ/A1H (R7S72100).
721 config DEBUG_RCAR_GEN1_SCIF0
722 bool "Kernel low-level debugging messages via SCIF0 on R8A7778"
723 depends on ARCH_R8A7778
725 Say Y here if you want kernel low-level debugging support
726 via SCIF0 on Renesas R-Car M1A (R8A7778).
728 config DEBUG_RCAR_GEN1_SCIF2
729 bool "Kernel low-level debugging messages via SCIF2 on R8A7779"
730 depends on ARCH_R8A7779
732 Say Y here if you want kernel low-level debugging support
733 via SCIF2 on Renesas R-Car H1 (R8A7779).
735 config DEBUG_RCAR_GEN2_SCIF0
736 bool "Kernel low-level debugging messages via SCIF0 on R8A7790/R8A7791/R8A7793)"
737 depends on ARCH_R8A7790 || ARCH_R8A7791 || ARCH_R8A7793
739 Say Y here if you want kernel low-level debugging support
740 via SCIF0 on Renesas R-Car H2 (R8A7790), M2-W (R8A7791), or
743 config DEBUG_RCAR_GEN2_SCIF2
744 bool "Kernel low-level debugging messages via SCIF2 on R8A7794"
745 depends on ARCH_R8A7794
747 Say Y here if you want kernel low-level debugging support
748 via SCIF2 on Renesas R-Car E2 (R8A7794).
750 config DEBUG_RMOBILE_SCIFA0
751 bool "Kernel low-level debugging messages via SCIFA0 on R8A73A4/SH7372"
752 depends on ARCH_R8A73A4 || ARCH_SH7372
754 Say Y here if you want kernel low-level debugging support
755 via SCIFA0 on Renesas R-Mobile APE6 (R8A73A4) or SH-Mobile
758 config DEBUG_RMOBILE_SCIFA1
759 bool "Kernel low-level debugging messages via SCIFA1 on R8A7740"
760 depends on ARCH_R8A7740
762 Say Y here if you want kernel low-level debugging support
763 via SCIFA1 on Renesas R-Mobile A1 (R8A7740).
765 config DEBUG_RMOBILE_SCIFA4
766 bool "Kernel low-level debugging messages via SCIFA4 on SH73A0"
767 depends on ARCH_SH73A0
769 Say Y here if you want kernel low-level debugging support
770 via SCIFA4 on Renesas SH-Mobile AG5 (SH73A0).
772 config DEBUG_S3C_UART0
773 depends on PLAT_SAMSUNG
774 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
775 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
776 select DEBUG_S5PV210_UART if ARCH_S5PV210
777 bool "Use Samsung S3C UART 0 for low-level debug"
779 Say Y here if you want the debug print routines to direct
780 their output to UART 0. The port must have been initialised
781 by the boot-loader before use.
783 config DEBUG_S3C_UART1
784 depends on PLAT_SAMSUNG
785 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
786 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
787 select DEBUG_S5PV210_UART if ARCH_S5PV210
788 bool "Use Samsung S3C UART 1 for low-level debug"
790 Say Y here if you want the debug print routines to direct
791 their output to UART 1. The port must have been initialised
792 by the boot-loader before use.
794 config DEBUG_S3C_UART2
795 depends on PLAT_SAMSUNG
796 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
797 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
798 select DEBUG_S5PV210_UART if ARCH_S5PV210
799 bool "Use Samsung S3C UART 2 for low-level debug"
801 Say Y here if you want the debug print routines to direct
802 their output to UART 2. The port must have been initialised
803 by the boot-loader before use.
805 config DEBUG_S3C_UART3
806 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
807 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
808 select DEBUG_S5PV210_UART if ARCH_S5PV210
809 bool "Use Samsung S3C UART 3 for low-level debug"
811 Say Y here if you want the debug print routines to direct
812 their output to UART 3. The port must have been initialised
813 by the boot-loader before use.
815 config DEBUG_S3C2410_UART0
816 depends on ARCH_S3C24XX
817 select DEBUG_S3C2410_UART
818 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
820 Say Y here if you want the debug print routines to direct
821 their output to UART 0. The port must have been initialised
822 by the boot-loader before use.
824 config DEBUG_S3C2410_UART1
825 depends on ARCH_S3C24XX
826 select DEBUG_S3C2410_UART
827 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
829 Say Y here if you want the debug print routines to direct
830 their output to UART 1. The port must have been initialised
831 by the boot-loader before use.
833 config DEBUG_S3C2410_UART2
834 depends on ARCH_S3C24XX
835 select DEBUG_S3C2410_UART
836 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
838 Say Y here if you want the debug print routines to direct
839 their output to UART 2. The port must have been initialised
840 by the boot-loader before use.
843 depends on ARCH_SA1100
844 bool "Use SA1100 UARTs for low-level debug"
846 Say Y here if you want kernel low-level debugging support
847 on SA-11x0 UART ports. The kernel will check for the first
848 enabled UART in a sequence 3-1-2.
850 config DEBUG_SOCFPGA_UART
851 depends on ARCH_SOCFPGA
852 bool "Use SOCFPGA UART for low-level debug"
853 select DEBUG_UART_8250
855 Say Y here if you want kernel low-level debugging support
856 on SOCFPGA based platforms.
858 config DEBUG_SUN9I_UART0
859 bool "Kernel low-level debugging messages via sun9i UART0"
860 depends on MACH_SUN9I
861 select DEBUG_UART_8250
863 Say Y here if you want kernel low-level debugging support
864 on Allwinner A80 based platforms on the UART0.
866 config DEBUG_SUNXI_UART0
867 bool "Kernel low-level debugging messages via sunXi UART0"
868 depends on ARCH_SUNXI
869 select DEBUG_UART_8250
871 Say Y here if you want kernel low-level debugging support
872 on Allwinner A1X based platforms on the UART0.
874 config DEBUG_SUNXI_UART1
875 bool "Kernel low-level debugging messages via sunXi UART1"
876 depends on ARCH_SUNXI
877 select DEBUG_UART_8250
879 Say Y here if you want kernel low-level debugging support
880 on Allwinner A1X based platforms on the UART1.
882 config DEBUG_SUNXI_R_UART
883 bool "Kernel low-level debugging messages via sunXi R_UART"
884 depends on MACH_SUN6I || MACH_SUN8I
885 select DEBUG_UART_8250
887 Say Y here if you want kernel low-level debugging support
888 on Allwinner A31/A23 based platforms on the R_UART.
890 config TEGRA_DEBUG_UART_AUTO_ODMDATA
891 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
892 depends on ARCH_TEGRA
893 select DEBUG_TEGRA_UART
895 Automatically determines which UART to use for low-level
896 debug based on the ODMDATA value. This value is part of
897 the BCT, and is written to the boot memory device using
898 nvflash, or other flashing tool. When bits 19:18 are 3,
899 then bits 17:15 indicate which UART to use; 0/1/2/3/4
902 config TEGRA_DEBUG_UARTA
903 bool "Kernel low-level debugging messages via Tegra UART A"
904 depends on ARCH_TEGRA
905 select DEBUG_TEGRA_UART
907 Say Y here if you want kernel low-level debugging support
908 on Tegra based platforms.
910 config TEGRA_DEBUG_UARTB
911 bool "Kernel low-level debugging messages via Tegra UART B"
912 depends on ARCH_TEGRA
913 select DEBUG_TEGRA_UART
915 Say Y here if you want kernel low-level debugging support
916 on Tegra based platforms.
918 config TEGRA_DEBUG_UARTC
919 bool "Kernel low-level debugging messages via Tegra UART C"
920 depends on ARCH_TEGRA
921 select DEBUG_TEGRA_UART
923 Say Y here if you want kernel low-level debugging support
924 on Tegra based platforms.
926 config TEGRA_DEBUG_UARTD
927 bool "Kernel low-level debugging messages via Tegra UART D"
928 depends on ARCH_TEGRA
929 select DEBUG_TEGRA_UART
931 Say Y here if you want kernel low-level debugging support
932 on Tegra based platforms.
934 config TEGRA_DEBUG_UARTE
935 bool "Kernel low-level debugging messages via Tegra UART E"
936 depends on ARCH_TEGRA
937 select DEBUG_TEGRA_UART
939 Say Y here if you want kernel low-level debugging support
940 on Tegra based platforms.
942 config DEBUG_SIRFPRIMA2_UART1
943 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
944 depends on ARCH_PRIMA2
945 select DEBUG_SIRFSOC_UART
947 Say Y here if you want the debug print routines to direct
948 their output to the uart1 port on SiRFprimaII devices.
950 config DEBUG_SIRFATLAS7_UART0
951 bool "Kernel low-level debugging messages via SiRFatlas7 UART0"
952 depends on ARCH_ATLAS7
953 select DEBUG_SIRFSOC_UART
955 Say Y here if you want the debug print routines to direct
956 their output to the uart0 port on SiRFATLAS7 devices.The uart0
957 is used on SiRFATLAS7 as a extra debug port.sometimes an extra
958 debug port can be very useful.
960 config DEBUG_SIRFATLAS7_UART1
961 bool "Kernel low-level debugging messages via SiRFatlas7 UART1"
962 depends on ARCH_ATLAS7
963 select DEBUG_SIRFSOC_UART
965 Say Y here if you want the debug print routines to direct
966 their output to the uart1 port on SiRFATLAS7 devices.
968 config STIH41X_DEBUG_ASC2
969 bool "Use StiH415/416 ASC2 UART for low-level debug"
971 select DEBUG_STI_UART
973 Say Y here if you want kernel low-level debugging support
974 on STiH415/416 based platforms like b2000, which has
975 default UART wired up to ASC2.
979 config STIH41X_DEBUG_SBC_ASC1
980 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
982 select DEBUG_STI_UART
984 Say Y here if you want kernel low-level debugging support
985 on STiH415/416 based platforms like b2020. which has
986 default UART wired up to SBC ASC1.
990 config DEBUG_U300_UART
991 bool "Kernel low-level debugging messages via U300 UART0"
993 select DEBUG_UART_PL01X
995 Say Y here if you want the debug print routines to direct
996 their output to the uart port on U300 devices.
998 config DEBUG_UX500_UART
999 depends on ARCH_U8500
1000 bool "Use Ux500 UART for low-level debug"
1002 Say Y here if you want kernel low-level debugging support
1003 on Ux500 based platforms.
1005 config DEBUG_MT6589_UART0
1006 bool "Mediatek mt6589 UART0"
1007 depends on ARCH_MEDIATEK
1008 select DEBUG_UART_8250
1010 Say Y here if you want kernel low-level debugging support
1011 for Mediatek mt6589 based platforms on UART0.
1013 config DEBUG_MT8127_UART0
1014 bool "Mediatek mt8127 UART0"
1015 depends on ARCH_MEDIATEK
1016 select DEBUG_UART_8250
1018 Say Y here if you want kernel low-level debugging support
1019 for Mediatek mt8127 based platforms on UART0.
1021 config DEBUG_MT8135_UART3
1022 bool "Mediatek mt8135 UART3"
1023 depends on ARCH_MEDIATEK
1024 select DEBUG_UART_8250
1026 Say Y here if you want kernel low-level debugging support
1027 for Mediatek mt8135 based platforms on UART3.
1029 config DEBUG_VEXPRESS_UART0_DETECT
1030 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
1031 depends on ARCH_VEXPRESS && CPU_CP15_MMU
1033 This option enables a simple heuristic which tries to determine
1034 the motherboard's memory map variant (original or RS1) and then
1035 choose the relevant UART0 base address.
1037 Note that this will only work with standard A-class core tiles,
1038 and may fail with non-standard SMM or custom software models.
1040 config DEBUG_VEXPRESS_UART0_CA9
1041 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
1042 depends on ARCH_VEXPRESS
1043 select DEBUG_UART_PL01X
1045 This option selects UART0 at 0x10009000. Except for custom models,
1046 this applies only to the V2P-CA9 tile.
1048 config DEBUG_VEXPRESS_UART0_RS1
1049 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
1050 depends on ARCH_VEXPRESS
1051 select DEBUG_UART_PL01X
1053 This option selects UART0 at 0x1c090000. This applies to most
1054 of the tiles using the RS1 memory map, including all new A-class
1055 core tiles, FPGA-based SMMs and software models.
1057 config DEBUG_VEXPRESS_UART0_CRX
1058 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
1059 depends on ARCH_VEXPRESS && !MMU
1060 select DEBUG_UART_PL01X
1062 This option selects UART0 at 0xb0090000. This is appropriate for
1063 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
1065 config DEBUG_VT8500_UART0
1066 bool "Use UART0 on VIA/Wondermedia SoCs"
1067 depends on ARCH_VT8500
1069 This option selects UART0 on VIA/Wondermedia System-on-a-chip
1070 devices, including VT8500, WM8505, WM8650 and WM8850.
1072 config DEBUG_LL_UART_NONE
1073 bool "No low-level debugging UART"
1074 depends on !ARCH_MULTIPLATFORM
1076 Say Y here if your platform doesn't provide a UART option
1077 above. This relies on your platform choosing the right UART
1078 definition internally in order for low-level debugging to
1082 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
1084 Say Y here if you want the debug print routines to direct
1085 their output to the EmbeddedICE macrocell's DCC channel using
1086 co-processor 14. This is known to work on the ARM9 style ICE
1087 channel and on the XScale with the PEEDI.
1089 Note that the system will appear to hang during boot if there
1090 is nothing connected to read from the DCC.
1092 config DEBUG_SEMIHOSTING
1093 bool "Kernel low-level debug output via semihosting I/O"
1095 Semihosting enables code running on an ARM target to use
1096 the I/O facilities on a host debugger/emulator through a
1097 simple SVC call. The host debugger or emulator must have
1098 semihosting enabled for the special svc call to be trapped
1099 otherwise the kernel will crash.
1101 This is known to work with OpenOCD, as well as
1102 ARM's Fast Models, or any other controlling environment
1103 that implements semihosting.
1105 For more details about semihosting, please see
1106 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
1108 config DEBUG_LL_UART_8250
1109 bool "Kernel low-level debugging via 8250 UART"
1111 Say Y here if you wish the debug print routes to direct
1112 their output to an 8250 UART. You can use this option
1113 to provide the parameters for the 8250 UART rather than
1114 selecting one of the platform specific options above if
1115 you know the parameters for the port.
1117 This option is preferred over the platform specific
1118 options; the platform specific options are deprecated
1119 and will be soon removed.
1121 config DEBUG_LL_UART_EFM32
1122 bool "Kernel low-level debugging via efm32 UART"
1123 depends on ARCH_EFM32
1125 Say Y here if you want the debug print routines to direct
1126 their output to an UART or USART port on efm32 based
1127 machines. Use the following addresses for DEBUG_UART_PHYS:
1135 config DEBUG_LL_UART_PL01X
1136 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
1138 Say Y here if you wish the debug print routes to direct
1139 their output to a PL01x Primecell UART. You can use
1140 this option to provide the parameters for the UART
1141 rather than selecting one of the platform specific
1142 options above if you know the parameters for the port.
1144 This option is preferred over the platform specific
1145 options; the platform specific options are deprecated
1146 and will be soon removed.
1150 config DEBUG_EXYNOS_UART
1153 config DEBUG_S3C2410_UART
1155 select DEBUG_S3C24XX_UART
1157 config DEBUG_S3C24XX_UART
1160 config DEBUG_S5PV210_UART
1163 config DEBUG_OMAP2PLUS_UART
1165 depends on ARCH_OMAP2PLUS
1167 config DEBUG_IMX_UART_PORT
1168 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
1169 DEBUG_IMX25_UART || \
1170 DEBUG_IMX21_IMX27_UART || \
1171 DEBUG_IMX31_UART || \
1172 DEBUG_IMX35_UART || \
1173 DEBUG_IMX50_UART || \
1174 DEBUG_IMX51_UART || \
1175 DEBUG_IMX53_UART || \
1176 DEBUG_IMX6Q_UART || \
1177 DEBUG_IMX6SL_UART || \
1182 Choose UART port on which kernel low-level debug messages
1185 config DEBUG_VF_UART_PORT
1186 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1189 depends on SOC_VF610
1191 Choose UART port on which kernel low-level debug messages
1194 config DEBUG_TEGRA_UART
1196 depends on ARCH_TEGRA
1198 config DEBUG_STI_UART
1202 config DEBUG_SIRFSOC_UART
1204 depends on ARCH_SIRF
1206 config DEBUG_LL_INCLUDE
1208 default "debug/sa1100.S" if DEBUG_SA1100
1209 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1210 default "debug/at91.S" if AT91_DEBUG_LL_DBGU0 || AT91_DEBUG_LL_DBGU1 || \
1212 default "debug/asm9260.S" if DEBUG_ASM9260_UART
1213 default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1214 default "debug/meson.S" if DEBUG_MESON_UARTAO
1215 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1216 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1217 default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1218 default "debug/icedcc.S" if DEBUG_ICEDCC
1219 default "debug/imx.S" if DEBUG_IMX1_UART || \
1220 DEBUG_IMX25_UART || \
1221 DEBUG_IMX21_IMX27_UART || \
1222 DEBUG_IMX31_UART || \
1223 DEBUG_IMX35_UART || \
1224 DEBUG_IMX50_UART || \
1225 DEBUG_IMX51_UART || \
1226 DEBUG_IMX53_UART ||\
1227 DEBUG_IMX6Q_UART || \
1228 DEBUG_IMX6SL_UART || \
1230 default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
1231 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1232 default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
1233 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
1234 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF2
1235 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF0
1236 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF2
1237 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA0
1238 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA1
1239 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
1240 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1241 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1242 default "debug/sirf.S" if DEBUG_SIRFSOC_UART
1243 default "debug/sti.S" if DEBUG_STI_UART
1244 default "debug/tegra.S" if DEBUG_TEGRA_UART
1245 default "debug/ux500.S" if DEBUG_UX500_UART
1246 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1247 default "debug/vf.S" if DEBUG_VF_UART
1248 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1249 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1250 default "debug/bcm63xx.S" if DEBUG_UART_BCM63XX
1251 default "mach/debug-macro.S"
1253 # Compatibility options for PL01x
1254 config DEBUG_UART_PL01X
1255 def_bool ARCH_EP93XX || \
1256 ARCH_INTEGRATOR || \
1262 # Compatibility options for 8250
1263 config DEBUG_UART_8250
1264 def_bool ARCH_DOVE || ARCH_EBSA110 || \
1265 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1266 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1267 ARCH_IOP33X || ARCH_IXP4XX || \
1268 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1270 # Compatibility options for BCM63xx
1271 config DEBUG_UART_BCM63XX
1272 def_bool ARCH_BCM_63XX
1274 config DEBUG_UART_PHYS
1275 hex "Physical base address of debug UART"
1276 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1277 default 0x01c28000 if DEBUG_SUNXI_UART0
1278 default 0x01c28400 if DEBUG_SUNXI_UART1
1279 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1280 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1281 default 0x01f02800 if DEBUG_SUNXI_R_UART
1282 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1283 default 0x02531000 if DEBUG_KEYSTONE_UART1
1284 default 0x03010fe0 if ARCH_RPC
1285 default 0x07000000 if DEBUG_SUN9I_UART0
1286 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
1287 DEBUG_VEXPRESS_UART0_CA9
1288 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1289 default 0x10124000 if DEBUG_RK3X_UART0
1290 default 0x10126000 if DEBUG_RK3X_UART1
1291 default 0x101f1000 if ARCH_VERSATILE
1292 default 0x101fb000 if DEBUG_NOMADIK_UART
1293 default 0x11002000 if DEBUG_MT8127_UART0
1294 default 0x11006000 if DEBUG_MT6589_UART0
1295 default 0x11009000 if DEBUG_MT8135_UART3
1296 default 0x16000000 if ARCH_INTEGRATOR
1297 default 0x18000300 if DEBUG_BCM_5301X
1298 default 0x18010000 if DEBUG_SIRFATLAS7_UART0
1299 default 0x18020000 if DEBUG_SIRFATLAS7_UART1
1300 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1301 default 0x20001000 if DEBUG_HIP01_UART
1302 default 0x20060000 if DEBUG_RK29_UART0
1303 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1304 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1305 default 0x20201000 if DEBUG_BCM2835
1306 default 0x3e000000 if DEBUG_BCM_KONA_UART
1307 default 0x4000e400 if DEBUG_LL_UART_EFM32
1308 default 0x40090000 if ARCH_LPC32XX
1309 default 0x40100000 if DEBUG_PXA_UART1
1310 default 0x42000000 if ARCH_GEMINI
1311 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1312 DEBUG_S3C2410_UART0)
1313 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1314 DEBUG_S3C2410_UART1)
1315 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1316 DEBUG_S3C2410_UART2)
1317 default 0x78000000 if DEBUG_CNS3XXX
1318 default 0x7c0003f8 if FOOTBRIDGE
1319 default 0x78000000 if DEBUG_CNS3XXX
1320 default 0x80010000 if DEBUG_ASM9260_UART
1321 default 0x80070000 if DEBUG_IMX23_UART
1322 default 0x80074000 if DEBUG_IMX28_UART
1323 default 0x80230000 if DEBUG_PICOXCELL_UART
1324 default 0x808c0000 if ARCH_EP93XX
1325 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1326 default 0xa9a00000 if DEBUG_MSM_UART
1327 default 0xb0060000 if DEBUG_SIRFPRIMA2_UART1
1328 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1329 default 0xc0013000 if DEBUG_U300_UART
1330 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1331 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1332 default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1333 default 0xd0012000 if DEBUG_MVEBU_UART0
1334 default 0xc81004c0 if DEBUG_MESON_UARTAO
1335 default 0xd4017000 if DEBUG_MMP_UART2
1336 default 0xd4018000 if DEBUG_MMP_UART3
1337 default 0xe0000000 if ARCH_SPEAR13XX
1338 default 0xe4007000 if DEBUG_HIP04_UART
1339 default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
1340 default 0xe6c50000 if DEBUG_RMOBILE_SCIFA1
1341 default 0xe6c80000 if DEBUG_RMOBILE_SCIFA4
1342 default 0xe6e58000 if DEBUG_RCAR_GEN2_SCIF2
1343 default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
1344 default 0xe8008000 if DEBUG_R7S72100_SCIF2
1345 default 0xf0000be0 if ARCH_EBSA110
1346 default 0xf040ab00 if DEBUG_BRCMSTB_UART
1347 default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
1348 default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
1349 default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
1351 default 0xf7fc9000 if DEBUG_BERLIN_UART
1352 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1353 default 0xf991e000 if DEBUG_QCOM_UARTDM
1354 default 0xfcb00000 if DEBUG_HI3620_UART
1355 default 0xfe800000 if ARCH_IOP32X
1356 default 0xff690000 if DEBUG_RK32_UART2
1357 default 0xffc02000 if DEBUG_SOCFPGA_UART
1358 default 0xffd82340 if ARCH_IOP13XX
1359 default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
1360 default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
1361 default 0xfff36000 if DEBUG_HIGHBANK_UART
1362 default 0xfffe8600 if DEBUG_UART_BCM63XX
1363 default 0xfffff700 if ARCH_IOP33X
1364 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1365 DEBUG_LL_UART_EFM32 || \
1366 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1367 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
1368 DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
1369 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
1370 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
1371 DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
1372 DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
1375 config DEBUG_UART_VIRT
1376 hex "Virtual base address of debug UART"
1377 default 0xe0010fe0 if ARCH_RPC
1378 default 0xe1000000 if DEBUG_MSM_UART
1379 default 0xf0000be0 if ARCH_EBSA110
1380 default 0xf0010000 if DEBUG_ASM9260_UART
1381 default 0xf01fb000 if DEBUG_NOMADIK_UART
1382 default 0xf0201000 if DEBUG_BCM2835
1383 default 0xf1000300 if DEBUG_BCM_5301X
1384 default 0xf1002000 if DEBUG_MT8127_UART0
1385 default 0xf1006000 if DEBUG_MT6589_UART0
1386 default 0xf1009000 if DEBUG_MT8135_UART3
1387 default 0xf11f1000 if ARCH_VERSATILE
1388 default 0xf1600000 if ARCH_INTEGRATOR
1389 default 0xf1c28000 if DEBUG_SUNXI_UART0
1390 default 0xf1c28400 if DEBUG_SUNXI_UART1
1391 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1392 default 0xf6200000 if DEBUG_PXA_UART1
1393 default 0xf4090000 if ARCH_LPC32XX
1394 default 0xf4200000 if ARCH_GEMINI
1395 default 0xf7000000 if DEBUG_SUN9I_UART0
1396 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1397 DEBUG_S3C2410_UART0)
1398 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1399 DEBUG_S3C2410_UART1)
1400 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1401 DEBUG_S3C2410_UART2)
1402 default 0xf7fc9000 if DEBUG_BERLIN_UART
1403 default 0xf8007000 if DEBUG_HIP04_UART
1404 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1405 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1406 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1407 default 0xfb002000 if DEBUG_CNS3XXX
1408 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1409 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1410 default 0xfc40ab00 if DEBUG_BRCMSTB_UART
1411 default 0xfcfe8600 if DEBUG_UART_BCM63XX
1412 default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1413 default 0xfd000000 if ARCH_SPEAR13XX
1414 default 0xfd012000 if ARCH_MV78XX0
1415 default 0xfde12000 if ARCH_DOVE
1416 default 0xfe012000 if ARCH_ORION5X
1417 default 0xf31004c0 if DEBUG_MESON_UARTAO
1418 default 0xfe017000 if DEBUG_MMP_UART2
1419 default 0xfe018000 if DEBUG_MMP_UART3
1420 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1421 default 0xfe230000 if DEBUG_PICOXCELL_UART
1422 default 0xfe300000 if DEBUG_BCM_KONA_UART
1423 default 0xfe800000 if ARCH_IOP32X
1424 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1425 default 0xfeb24000 if DEBUG_RK3X_UART0
1426 default 0xfeb26000 if DEBUG_RK3X_UART1
1427 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1428 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1429 default 0xfec02000 if DEBUG_SOCFPGA_UART
1430 default 0xfec12000 if DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE
1431 default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
1432 default 0xfec10000 if DEBUG_SIRFATLAS7_UART0
1433 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1434 default 0xfec20000 if DEBUG_SIRFATLAS7_UART1
1435 default 0xfec60000 if DEBUG_SIRFPRIMA2_UART1
1436 default 0xfec90000 if DEBUG_RK32_UART2
1437 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1438 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1439 default 0xfed60000 if DEBUG_RK29_UART0
1440 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1441 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1442 default 0xfedc0000 if ARCH_EP93XX
1443 default 0xfee003f8 if FOOTBRIDGE
1444 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1445 default 0xfee82340 if ARCH_IOP13XX
1446 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1447 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1448 default 0xfef36000 if DEBUG_HIGHBANK_UART
1449 default 0xfefff700 if ARCH_IOP33X
1450 default 0xff003000 if DEBUG_U300_UART
1451 default 0xffd01000 if DEBUG_HIP01_UART
1452 default DEBUG_UART_PHYS if !MMU
1453 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1454 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1455 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
1456 DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || DEBUG_SIRFSOC_UART
1458 config DEBUG_UART_8250_SHIFT
1459 int "Register offset shift for the 8250 debug UART"
1460 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1461 default 0 if FOOTBRIDGE || ARCH_IOP32X || DEBUG_BCM_5301X
1464 config DEBUG_UART_8250_WORD
1465 bool "Use 32-bit accesses for 8250 UART"
1466 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1467 depends on DEBUG_UART_8250_SHIFT >= 2
1468 default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1470 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1471 DEBUG_DAVINCI_DA8XX_UART2 || \
1472 DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \
1475 config DEBUG_UART_8250_FLOW_CONTROL
1476 bool "Enable flow control for 8250 UART"
1477 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1478 default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1480 config DEBUG_UNCOMPRESS
1482 depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG
1483 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1484 (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1486 This option influences the normal decompressor output for
1487 multiplatform kernels. Normally, multiplatform kernels disable
1488 decompressor output because it is not possible to know where to
1489 send the decompressor output.
1491 When this option is set, the selected DEBUG_LL output method
1492 will be re-used for normal decompressor output on multiplatform
1496 config UNCOMPRESS_INCLUDE
1498 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1499 PLAT_SAMSUNG || ARCH_EFM32
1500 default "mach/uncompress.h"
1506 Say Y here if you want to have an early console using the
1507 kernel low-level debugging functions. Add earlyprintk to your
1508 kernel parameters to enable this console.
1510 config ARM_KPROBES_TEST
1511 tristate "Kprobes test module"
1512 depends on KPROBES && MODULES
1514 Perform tests of kprobes API and instruction set simulation.
1516 config PID_IN_CONTEXTIDR
1517 bool "Write the current PID to the CONTEXTIDR register"
1518 depends on CPU_COPY_V6
1520 Enabling this option causes the kernel to write the current PID to
1521 the PROCID field of the CONTEXTIDR register, at the expense of some
1522 additional instructions during context switch. Say Y here only if you
1523 are planning to use hardware trace tools with this kernel.
1525 config DEBUG_SET_MODULE_RONX
1526 bool "Set loadable kernel module data as NX and text as RO"
1529 This option helps catch unintended modifications to loadable
1530 kernel module's text and read-only data. It also prevents execution
1531 of module data. Such protection may interfere with run-time code
1532 patching and dynamic kernel tracing - and they might also protect
1533 against certain classes of kernel exploits.
1534 If in doubt, say "N".
1536 menuconfig CORESIGHT
1537 bool "CoreSight Tracing Support"
1540 This framework provides a kernel interface for the CoreSight debug
1541 and trace drivers to register themselves with. It's intended to build
1542 a topological view of the CoreSight components based on a DT
1543 specification and configure the right serie of components when a
1544 trace source gets enabled.
1547 config CORESIGHT_LINKS_AND_SINKS
1548 bool "CoreSight Link and Sink drivers"
1550 This enables support for CoreSight link and sink drivers that are
1551 responsible for transporting and collecting the trace data
1552 respectively. Link and sinks are dynamically aggregated with a trace
1553 entity at run time to form a complete trace path.
1555 config CORESIGHT_LINK_AND_SINK_TMC
1556 bool "Coresight generic TMC driver"
1557 depends on CORESIGHT_LINKS_AND_SINKS
1559 This enables support for the Trace Memory Controller driver. Depending
1560 on its configuration the device can act as a link (embedded trace router
1561 - ETR) or sink (embedded trace FIFO). The driver complies with the
1562 generic implementation of the component without special enhancement or
1565 config CORESIGHT_SINK_TPIU
1566 bool "Coresight generic TPIU driver"
1567 depends on CORESIGHT_LINKS_AND_SINKS
1569 This enables support for the Trace Port Interface Unit driver, responsible
1570 for bridging the gap between the on-chip coresight components and a trace
1571 port collection engine, typically connected to an external host for use
1572 case capturing more traces than the on-board coresight memory can handle.
1574 config CORESIGHT_SINK_ETBV10
1575 bool "Coresight ETBv1.0 driver"
1576 depends on CORESIGHT_LINKS_AND_SINKS
1578 This enables support for the Embedded Trace Buffer version 1.0 driver
1579 that complies with the generic implementation of the component without
1580 special enhancement or added features.
1582 config CORESIGHT_SOURCE_ETM3X
1583 bool "CoreSight Embedded Trace Macrocell 3.x driver"
1584 select CORESIGHT_LINKS_AND_SINKS
1586 This driver provides support for processor ETM3.x and PTM1.x modules,
1587 which allows tracing the instructions that a processor is executing
1588 This is primarily useful for instruction level tracing. Depending
1589 the ETM version data tracing may also be available.