| blob | 8f90595069a1cafb8af4c5e7db96a160cfc0b671 |
1 menu "Kernel hacking"
3 source "lib/Kconfig.debug"
5 config ARM_PTDUMP
6 bool "Export kernel pagetable layout to userspace via debugfs"
7 depends on DEBUG_KERNEL
8 select DEBUG_FS
9 ---help---
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
14 kernel.
15 If in doubt, say "N"
17 config STRICT_DEVMEM
18 bool "Filter access to /dev/mem"
19 depends on MMU
20 ---help---
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.
29 If in doubt, say Y.
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 ;).
35 config FRAME_POINTER
36 bool
37 depends on !THUMB2_KERNEL
38 default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
39 help
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.
45 config ARM_UNWIND
46 bool "Enable stack unwinding support (EXPERIMENTAL)"
47 depends on AEABI
48 default y
49 help
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.
56 config OLD_MCOUNT
57 bool
58 depends on FUNCTION_TRACER && FRAME_POINTER
59 default y
61 config DEBUG_USER
62 bool "Verbose user fault messages"
63 help
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
73 2 - system calls
74 4 - invalid data aborts
75 8 - SIGSEGV faults
76 16 - SIGBUS faults
78 # These options are only for real kernel hackers who want to get their hands dirty.
79 config DEBUG_LL
80 bool "Kernel low-level debugging functions (read help!)"
81 depends on DEBUG_KERNEL
82 help
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.
92 choice
93 prompt "Kernel low-level debugging port"
94 depends on DEBUG_LL
96 config AT91_DEBUG_LL_DBGU0
97 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
98 depends on HAVE_AT91_DBGU0
100 config AT91_DEBUG_LL_DBGU1
101 bool "Kernel low-level debugging on 9263 and 9g45"
102 depends on HAVE_AT91_DBGU1
104 config DEBUG_BCM2835
105 bool "Kernel low-level debugging on BCM2835 PL011 UART"
106 depends on ARCH_BCM2835
107 select DEBUG_UART_PL01X
109 config DEBUG_BCM_5301X
110 bool "Kernel low-level debugging on BCM5301X UART1"
111 depends on ARCH_BCM_5301X
112 select DEBUG_UART_PL01X
114 config DEBUG_BCM_KONA_UART
115 bool "Kernel low-level debugging messages via BCM KONA UART"
116 depends on ARCH_BCM_MOBILE
117 select DEBUG_UART_8250
118 help
119 Say Y here if you want kernel low-level debugging support
120 on Broadcom SoC platforms.
121 This low level debug works for Broadcom
122 mobile SoCs in the Kona family of chips (e.g. bcm28155,
123 bcm11351, etc...)
125 config DEBUG_BERLIN_UART
126 bool "Marvell Berlin SoC Debug UART"
127 depends on ARCH_BERLIN
128 select DEBUG_UART_8250
129 help
130 Say Y here if you want kernel low-level debugging support
131 on Marvell Berlin SoC based platforms.
133 config DEBUG_CLPS711X_UART1
134 bool "Kernel low-level debugging messages via UART1"
135 depends on ARCH_CLPS711X
136 help
137 Say Y here if you want the debug print routines to direct
138 their output to the first serial port on these devices.
140 config DEBUG_CLPS711X_UART2
141 bool "Kernel low-level debugging messages via UART2"
142 depends on ARCH_CLPS711X
143 help
144 Say Y here if you want the debug print routines to direct
145 their output to the second serial port on these devices.
147 config DEBUG_CNS3XXX
148 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
149 depends on ARCH_CNS3XXX
150 select DEBUG_UART_PL01X
151 help
152 Say Y here if you want the debug print routines to direct
153 their output to the CNS3xxx UART0.
155 config DEBUG_DAVINCI_DA8XX_UART1
156 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
157 depends on ARCH_DAVINCI_DA8XX
158 select DEBUG_UART_8250
159 help
160 Say Y here if you want the debug print routines to direct
161 their output to UART1 serial port on DaVinci DA8XX devices.
163 config DEBUG_DAVINCI_DA8XX_UART2
164 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
165 depends on ARCH_DAVINCI_DA8XX
166 select DEBUG_UART_8250
167 help
168 Say Y here if you want the debug print routines to direct
169 their output to UART2 serial port on DaVinci DA8XX devices.
171 config DEBUG_DAVINCI_DMx_UART0
172 bool "Kernel low-level debugging on DaVinci DMx using UART0"
173 depends on ARCH_DAVINCI_DMx
174 select DEBUG_UART_8250
175 help
176 Say Y here if you want the debug print routines to direct
177 their output to UART0 serial port on DaVinci DMx devices.
179 config DEBUG_ZYNQ_UART0
180 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
181 depends on ARCH_ZYNQ
182 help
183 Say Y here if you want the debug print routines to direct
184 their output to UART0 on the Zynq platform.
186 config DEBUG_ZYNQ_UART1
187 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
188 depends on ARCH_ZYNQ
189 help
190 Say Y here if you want the debug print routines to direct
191 their output to UART1 on the Zynq platform.
193 If you have a ZC702 board and want early boot messages to
194 appear on the USB serial adaptor, select this option.
196 config DEBUG_DC21285_PORT
197 bool "Kernel low-level debugging messages via footbridge serial port"
198 depends on FOOTBRIDGE
199 help
200 Say Y here if you want the debug print routines to direct
201 their output to the serial port in the DC21285 (Footbridge).
203 config DEBUG_FOOTBRIDGE_COM1
204 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
205 depends on FOOTBRIDGE
206 help
207 Say Y here if you want the debug print routines to direct
208 their output to the 8250 at PCI COM1.
210 config DEBUG_HI3620_UART
211 bool "Hisilicon HI3620 Debug UART"
212 depends on ARCH_HI3xxx
213 select DEBUG_UART_PL01X
214 help
215 Say Y here if you want kernel low-level debugging support
216 on HI3620 UART.
218 config DEBUG_HI3716_UART
219 bool "Hisilicon Hi3716 Debug UART"
220 depends on ARCH_HI3xxx
221 select DEBUG_UART_PL01X
222 help
223 Say Y here if you want kernel low-level debugging support
224 on HI3716 UART.
226 config DEBUG_HIGHBANK_UART
227 bool "Kernel low-level debugging messages via Highbank UART"
228 depends on ARCH_HIGHBANK
229 select DEBUG_UART_PL01X
230 help
231 Say Y here if you want the debug print routines to direct
232 their output to the UART on Highbank based devices.
234 config DEBUG_IMX1_UART
235 bool "i.MX1 Debug UART"
236 depends on SOC_IMX1
237 help
238 Say Y here if you want kernel low-level debugging support
239 on i.MX1.
241 config DEBUG_IMX23_UART
242 bool "i.MX23 Debug UART"
243 depends on SOC_IMX23
244 select DEBUG_UART_PL01X
245 help
246 Say Y here if you want kernel low-level debugging support
247 on i.MX23.
249 config DEBUG_IMX25_UART
250 bool "i.MX25 Debug UART"
251 depends on SOC_IMX25
252 help
253 Say Y here if you want kernel low-level debugging support
254 on i.MX25.
256 config DEBUG_IMX21_IMX27_UART
257 bool "i.MX21 and i.MX27 Debug UART"
258 depends on SOC_IMX21 || SOC_IMX27
259 help
260 Say Y here if you want kernel low-level debugging support
261 on i.MX21 or i.MX27.
263 config DEBUG_IMX28_UART
264 bool "i.MX28 Debug UART"
265 depends on SOC_IMX28
266 select DEBUG_UART_PL01X
267 help
268 Say Y here if you want kernel low-level debugging support
269 on i.MX28.
271 config DEBUG_IMX31_UART
272 bool "i.MX31 Debug UART"
273 depends on SOC_IMX31
274 help
275 Say Y here if you want kernel low-level debugging support
276 on i.MX31.
278 config DEBUG_IMX35_UART
279 bool "i.MX35 Debug UART"
280 depends on SOC_IMX35
281 help
282 Say Y here if you want kernel low-level debugging support
283 on i.MX35.
285 config DEBUG_IMX50_UART
286 bool "i.MX50 Debug UART"
287 depends on SOC_IMX50
288 help
289 Say Y here if you want kernel low-level debugging support
290 on i.MX50.
292 config DEBUG_IMX51_UART
293 bool "i.MX51 Debug UART"
294 depends on SOC_IMX51
295 help
296 Say Y here if you want kernel low-level debugging support
297 on i.MX51.
299 config DEBUG_IMX53_UART
300 bool "i.MX53 Debug UART"
301 depends on SOC_IMX53
302 help
303 Say Y here if you want kernel low-level debugging support
304 on i.MX53.
306 config DEBUG_IMX6Q_UART
307 bool "i.MX6Q/DL Debug UART"
308 depends on SOC_IMX6Q
309 help
310 Say Y here if you want kernel low-level debugging support
311 on i.MX6Q/DL.
313 config DEBUG_IMX6SL_UART
314 bool "i.MX6SL Debug UART"
315 depends on SOC_IMX6SL
316 help
317 Say Y here if you want kernel low-level debugging support
318 on i.MX6SL.
320 config DEBUG_IMX6SX_UART
321 bool "i.MX6SX Debug UART"
322 depends on SOC_IMX6SX
323 help
324 Say Y here if you want kernel low-level debugging support
325 on i.MX6SX.
327 config DEBUG_KEYSTONE_UART0
328 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
329 depends on ARCH_KEYSTONE
330 select DEBUG_UART_8250
331 help
332 Say Y here if you want the debug print routines to direct
333 their output to UART0 serial port on KEYSTONE2 devices.
335 config DEBUG_KEYSTONE_UART1
336 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
337 depends on ARCH_KEYSTONE
338 select DEBUG_UART_8250
339 help
340 Say Y here if you want the debug print routines to direct
341 their output to UART1 serial port on KEYSTONE2 devices.
343 config DEBUG_MMP_UART2
344 bool "Kernel low-level debugging message via MMP UART2"
345 depends on ARCH_MMP
346 select DEBUG_UART_8250
347 help
348 Say Y here if you want kernel low-level debugging support
349 on MMP UART2.
351 config DEBUG_MMP_UART3
352 bool "Kernel low-level debugging message via MMP UART3"
353 depends on ARCH_MMP
354 select DEBUG_UART_8250
355 help
356 Say Y here if you want kernel low-level debugging support
357 on MMP UART3.
359 config DEBUG_MSM_UART
360 bool "Kernel low-level debugging messages via MSM UART"
361 depends on ARCH_MSM
362 help
363 Say Y here if you want the debug print routines to direct
364 their output to the serial port on MSM devices.
366 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE #
367 MSM7X00A, QSD8X50 0xa9a00000 0xe1000000 UART1
368 MSM7X00A, QSD8X50 0xa9b00000 0xe1000000 UART2
369 MSM7X00A, QSD8X50 0xa9c00000 0xe1000000 UART3
371 MSM7X30 0xaca00000 0xe1000000 UART1
372 MSM7X30 0xacb00000 0xe1000000 UART2
373 MSM7X30 0xacc00000 0xe1000000 UART3
375 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
376 options based on your needs.
378 config DEBUG_QCOM_UARTDM
379 bool "Kernel low-level debugging messages via QCOM UARTDM"
380 depends on ARCH_QCOM
381 help
382 Say Y here if you want the debug print routines to direct
383 their output to the serial port on Qualcomm devices.
385 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE
386 APQ8084 0xf995e000 0xfa75e000
387 MSM8X60 0x19c40000 0xf0040000
388 MSM8960 0x16440000 0xf0040000
389 MSM8974 0xf991e000 0xfa71e000
391 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
392 options based on your needs.
394 config DEBUG_MVEBU_UART
395 bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
396 depends on ARCH_MVEBU
397 select DEBUG_UART_8250
398 help
399 Say Y here if you want kernel low-level debugging support
400 on MVEBU based platforms.
402 This option should be used with the old bootloaders
403 that left the internal registers mapped at
404 0xd0000000. As of today, this is the case on
405 platforms such as the Globalscale Mirabox or the
406 Plathome OpenBlocks AX3, when using the original
407 bootloader.
409 If the wrong DEBUG_MVEBU_UART* option is selected,
410 when u-boot hands over to the kernel, the system
411 silently crashes, with no serial output at all.
413 config DEBUG_MVEBU_UART_ALTERNATE
414 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
415 depends on ARCH_MVEBU
416 select DEBUG_UART_8250
417 help
418 Say Y here if you want kernel low-level debugging support
419 on MVEBU based platforms.
421 This option should be used with the new bootloaders
422 that remap the internal registers at 0xf1000000.
424 If the wrong DEBUG_MVEBU_UART* option is selected,
425 when u-boot hands over to the kernel, the system
426 silently crashes, with no serial output at all.
428 config DEBUG_VF_UART
429 bool "Vybrid UART"
430 depends on SOC_VF610
431 help
432 Say Y here if you want kernel low-level debugging support
433 on Vybrid based platforms.
435 config DEBUG_NOMADIK_UART
436 bool "Kernel low-level debugging messages via NOMADIK UART"
437 depends on ARCH_NOMADIK
438 select DEBUG_UART_PL01X
439 help
440 Say Y here if you want kernel low-level debugging support
441 on NOMADIK based platforms.
443 config DEBUG_NSPIRE_CLASSIC_UART
444 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
445 depends on ARCH_NSPIRE
446 select DEBUG_UART_8250
447 help
448 Say Y here if you want kernel low-level debugging support
449 on TI-NSPIRE classic models.
451 config DEBUG_NSPIRE_CX_UART
452 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
453 depends on ARCH_NSPIRE
454 select DEBUG_UART_PL01X
455 help
456 Say Y here if you want kernel low-level debugging support
457 on TI-NSPIRE CX models.
459 config DEBUG_OMAP2UART1
460 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
461 depends on ARCH_OMAP2PLUS
462 select DEBUG_OMAP2PLUS_UART
463 help
464 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
465 omap3 torpedo and 3530 lv som.
467 config DEBUG_OMAP2UART2
468 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
469 depends on ARCH_OMAP2PLUS
470 select DEBUG_OMAP2PLUS_UART
472 config DEBUG_OMAP2UART3
473 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
474 depends on ARCH_OMAP2PLUS
475 select DEBUG_OMAP2PLUS_UART
477 config DEBUG_OMAP3UART3
478 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
479 depends on ARCH_OMAP2PLUS
480 select DEBUG_OMAP2PLUS_UART
481 help
482 This covers at least cm_t3x, beagle, crane, devkit8000,
483 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
484 and 3517evm.
486 config DEBUG_OMAP4UART3
487 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
488 depends on ARCH_OMAP2PLUS
489 select DEBUG_OMAP2PLUS_UART
491 config DEBUG_OMAP3UART4
492 bool "Kernel low-level debugging messages via OMAP36XX UART4"
493 depends on ARCH_OMAP2PLUS
494 select DEBUG_OMAP2PLUS_UART
496 config DEBUG_OMAP4UART4
497 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
498 depends on ARCH_OMAP2PLUS
499 select DEBUG_OMAP2PLUS_UART
501 config DEBUG_TI81XXUART1
502 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
503 depends on ARCH_OMAP2PLUS
504 select DEBUG_OMAP2PLUS_UART
506 config DEBUG_TI81XXUART2
507 bool "Kernel low-level debugging messages via TI81XX UART2"
508 depends on ARCH_OMAP2PLUS
509 select DEBUG_OMAP2PLUS_UART
511 config DEBUG_TI81XXUART3
512 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
513 depends on ARCH_OMAP2PLUS
514 select DEBUG_OMAP2PLUS_UART
516 config DEBUG_AM33XXUART1
517 bool "Kernel low-level debugging messages via AM33XX UART1"
518 depends on ARCH_OMAP2PLUS
519 select DEBUG_OMAP2PLUS_UART
521 config DEBUG_ZOOM_UART
522 bool "Kernel low-level debugging messages via Zoom2/3 UART"
523 depends on ARCH_OMAP2PLUS
524 select DEBUG_OMAP2PLUS_UART
526 config DEBUG_PICOXCELL_UART
527 depends on ARCH_PICOXCELL
528 bool "Use PicoXcell UART for low-level debug"
529 select DEBUG_UART_8250
530 help
531 Say Y here if you want kernel low-level debugging support
532 on PicoXcell based platforms.
534 config DEBUG_PXA_UART1
535 depends on ARCH_PXA
536 bool "Use PXA UART1 for low-level debug"
537 select DEBUG_UART_8250
538 help
539 Say Y here if you want kernel low-level debugging support
540 on PXA UART1.
542 config DEBUG_REALVIEW_STD_PORT
543 bool "RealView Default UART"
544 depends on ARCH_REALVIEW
545 select DEBUG_UART_PL01X
546 help
547 Say Y here if you want the debug print routines to direct
548 their output to the serial port on RealView EB, PB11MP, PBA8
549 and PBX platforms.
551 config DEBUG_REALVIEW_PB1176_PORT
552 bool "RealView PB1176 UART"
553 depends on MACH_REALVIEW_PB1176
554 select DEBUG_UART_PL01X
555 help
556 Say Y here if you want the debug print routines to direct
557 their output to the standard serial port on the RealView
558 PB1176 platform.
560 config DEBUG_RK29_UART0
561 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
562 depends on ARCH_ROCKCHIP
563 select DEBUG_UART_8250
564 help
565 Say Y here if you want kernel low-level debugging support
566 on Rockchip based platforms.
568 config DEBUG_RK29_UART1
569 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
570 depends on ARCH_ROCKCHIP
571 select DEBUG_UART_8250
572 help
573 Say Y here if you want kernel low-level debugging support
574 on Rockchip based platforms.
576 config DEBUG_RK29_UART2
577 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
578 depends on ARCH_ROCKCHIP
579 select DEBUG_UART_8250
580 help
581 Say Y here if you want kernel low-level debugging support
582 on Rockchip based platforms.
584 config DEBUG_RK3X_UART0
585 bool "Kernel low-level debugging messages via Rockchip RK3X UART0"
586 depends on ARCH_ROCKCHIP
587 select DEBUG_UART_8250
588 help
589 Say Y here if you want kernel low-level debugging support
590 on Rockchip based platforms.
592 config DEBUG_RK3X_UART1
593 bool "Kernel low-level debugging messages via Rockchip RK3X UART1"
594 depends on ARCH_ROCKCHIP
595 select DEBUG_UART_8250
596 help
597 Say Y here if you want kernel low-level debugging support
598 on Rockchip based platforms.
600 config DEBUG_RK3X_UART2
601 bool "Kernel low-level debugging messages via Rockchip RK3X UART2"
602 depends on ARCH_ROCKCHIP
603 select DEBUG_UART_8250
604 help
605 Say Y here if you want kernel low-level debugging support
606 on Rockchip based platforms.
608 config DEBUG_RK3X_UART3
609 bool "Kernel low-level debugging messages via Rockchip RK3X UART3"
610 depends on ARCH_ROCKCHIP
611 select DEBUG_UART_8250
612 help
613 Say Y here if you want kernel low-level debugging support
614 on Rockchip based platforms.
616 config DEBUG_S3C_UART0
617 depends on PLAT_SAMSUNG
618 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
619 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
620 bool "Use S3C UART 0 for low-level debug"
621 help
622 Say Y here if you want the debug print routines to direct
623 their output to UART 0. The port must have been initialised
624 by the boot-loader before use.
626 The uncompressor code port configuration is now handled
627 by CONFIG_S3C_LOWLEVEL_UART_PORT.
629 config DEBUG_S3C_UART1
630 depends on PLAT_SAMSUNG
631 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
632 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
633 bool "Use S3C UART 1 for low-level debug"
634 help
635 Say Y here if you want the debug print routines to direct
636 their output to UART 1. The port must have been initialised
637 by the boot-loader before use.
639 The uncompressor code port configuration is now handled
640 by CONFIG_S3C_LOWLEVEL_UART_PORT.
642 config DEBUG_S3C_UART2
643 depends on PLAT_SAMSUNG
644 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
645 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
646 bool "Use S3C UART 2 for low-level debug"
647 help
648 Say Y here if you want the debug print routines to direct
649 their output to UART 2. The port must have been initialised
650 by the boot-loader before use.
652 The uncompressor code port configuration is now handled
653 by CONFIG_S3C_LOWLEVEL_UART_PORT.
655 config DEBUG_S3C_UART3
656 depends on PLAT_SAMSUNG && ARCH_EXYNOS
657 select DEBUG_EXYNOS_UART
658 bool "Use S3C UART 3 for low-level debug"
659 help
660 Say Y here if you want the debug print routines to direct
661 their output to UART 3. The port must have been initialised
662 by the boot-loader before use.
664 The uncompressor code port configuration is now handled
665 by CONFIG_S3C_LOWLEVEL_UART_PORT.
667 config DEBUG_S3C2410_UART0
668 depends on ARCH_S3C24XX
669 select DEBUG_S3C2410_UART
670 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
671 help
672 Say Y here if you want the debug print routines to direct
673 their output to UART 0. The port must have been initialised
674 by the boot-loader before use.
676 config DEBUG_S3C2410_UART1
677 depends on ARCH_S3C24XX
678 select DEBUG_S3C2410_UART
679 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
680 help
681 Say Y here if you want the debug print routines to direct
682 their output to UART 1. The port must have been initialised
683 by the boot-loader before use.
685 config DEBUG_S3C2410_UART2
686 depends on ARCH_S3C24XX
687 select DEBUG_S3C2410_UART
688 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
689 help
690 Say Y here if you want the debug print routines to direct
691 their output to UART 2. The port must have been initialised
692 by the boot-loader before use.
694 config DEBUG_SOCFPGA_UART
695 depends on ARCH_SOCFPGA
696 bool "Use SOCFPGA UART for low-level debug"
697 select DEBUG_UART_8250
698 help
699 Say Y here if you want kernel low-level debugging support
700 on SOCFPGA based platforms.
702 config DEBUG_SUNXI_UART0
703 bool "Kernel low-level debugging messages via sunXi UART0"
704 depends on ARCH_SUNXI
705 select DEBUG_UART_8250
706 help
707 Say Y here if you want kernel low-level debugging support
708 on Allwinner A1X based platforms on the UART0.
710 config DEBUG_SUNXI_UART1
711 bool "Kernel low-level debugging messages via sunXi UART1"
712 depends on ARCH_SUNXI
713 select DEBUG_UART_8250
714 help
715 Say Y here if you want kernel low-level debugging support
716 on Allwinner A1X based platforms on the UART1.
718 config TEGRA_DEBUG_UART_AUTO_ODMDATA
719 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
720 depends on ARCH_TEGRA
721 select DEBUG_TEGRA_UART
722 help
723 Automatically determines which UART to use for low-level
724 debug based on the ODMDATA value. This value is part of
725 the BCT, and is written to the boot memory device using
726 nvflash, or other flashing tool. When bits 19:18 are 3,
727 then bits 17:15 indicate which UART to use; 0/1/2/3/4
728 are UART A/B/C/D/E.
730 config TEGRA_DEBUG_UARTA
731 bool "Kernel low-level debugging messages via Tegra UART A"
732 depends on ARCH_TEGRA
733 select DEBUG_TEGRA_UART
734 help
735 Say Y here if you want kernel low-level debugging support
736 on Tegra based platforms.
738 config TEGRA_DEBUG_UARTB
739 bool "Kernel low-level debugging messages via Tegra UART B"
740 depends on ARCH_TEGRA
741 select DEBUG_TEGRA_UART
742 help
743 Say Y here if you want kernel low-level debugging support
744 on Tegra based platforms.
746 config TEGRA_DEBUG_UARTC
747 bool "Kernel low-level debugging messages via Tegra UART C"
748 depends on ARCH_TEGRA
749 select DEBUG_TEGRA_UART
750 help
751 Say Y here if you want kernel low-level debugging support
752 on Tegra based platforms.
754 config TEGRA_DEBUG_UARTD
755 bool "Kernel low-level debugging messages via Tegra UART D"
756 depends on ARCH_TEGRA
757 select DEBUG_TEGRA_UART
758 help
759 Say Y here if you want kernel low-level debugging support
760 on Tegra based platforms.
762 config TEGRA_DEBUG_UARTE
763 bool "Kernel low-level debugging messages via Tegra UART E"
764 depends on ARCH_TEGRA
765 select DEBUG_TEGRA_UART
766 help
767 Say Y here if you want kernel low-level debugging support
768 on Tegra based platforms.
770 config DEBUG_SIRFPRIMA2_UART1
771 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
772 depends on ARCH_PRIMA2
773 help
774 Say Y here if you want the debug print routines to direct
775 their output to the uart1 port on SiRFprimaII devices.
777 config DEBUG_SIRFMARCO_UART1
778 bool "Kernel low-level debugging messages via SiRFmarco UART1"
779 depends on ARCH_MARCO
780 help
781 Say Y here if you want the debug print routines to direct
782 their output to the uart1 port on SiRFmarco devices.
784 config STIH41X_DEBUG_ASC2
785 bool "Use StiH415/416 ASC2 UART for low-level debug"
786 depends on ARCH_STI
787 select DEBUG_STI_UART
788 help
789 Say Y here if you want kernel low-level debugging support
790 on STiH415/416 based platforms like b2000, which has
791 default UART wired up to ASC2.
793 If unsure, say N.
795 config STIH41X_DEBUG_SBC_ASC1
796 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
797 depends on ARCH_STI
798 select DEBUG_STI_UART
799 help
800 Say Y here if you want kernel low-level debugging support
801 on STiH415/416 based platforms like b2020. which has
802 default UART wired up to SBC ASC1.
804 If unsure, say N.
806 config DEBUG_U300_UART
807 bool "Kernel low-level debugging messages via U300 UART0"
808 depends on ARCH_U300
809 select DEBUG_UART_PL01X
810 help
811 Say Y here if you want the debug print routines to direct
812 their output to the uart port on U300 devices.
814 config DEBUG_UX500_UART
815 depends on ARCH_U8500
816 bool "Use Ux500 UART for low-level debug"
817 help
818 Say Y here if you want kernel low-level debugging support
819 on Ux500 based platforms.
821 config DEBUG_VEXPRESS_UART0_DETECT
822 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
823 depends on ARCH_VEXPRESS && CPU_CP15_MMU
824 help
825 This option enables a simple heuristic which tries to determine
826 the motherboard's memory map variant (original or RS1) and then
827 choose the relevant UART0 base address.
829 Note that this will only work with standard A-class core tiles,
830 and may fail with non-standard SMM or custom software models.
832 config DEBUG_VEXPRESS_UART0_CA9
833 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
834 depends on ARCH_VEXPRESS
835 select DEBUG_UART_PL01X
836 help
837 This option selects UART0 at 0x10009000. Except for custom models,
838 this applies only to the V2P-CA9 tile.
840 config DEBUG_VEXPRESS_UART0_RS1
841 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
842 depends on ARCH_VEXPRESS
843 select DEBUG_UART_PL01X
844 help
845 This option selects UART0 at 0x1c090000. This applies to most
846 of the tiles using the RS1 memory map, including all new A-class
847 core tiles, FPGA-based SMMs and software models.
849 config DEBUG_VEXPRESS_UART0_CRX
850 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
851 depends on ARCH_VEXPRESS && !MMU
852 select DEBUG_UART_PL01X
853 help
854 This option selects UART0 at 0xb0090000. This is appropriate for
855 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
857 config DEBUG_VT8500_UART0
858 bool "Use UART0 on VIA/Wondermedia SoCs"
859 depends on ARCH_VT8500
860 help
861 This option selects UART0 on VIA/Wondermedia System-on-a-chip
862 devices, including VT8500, WM8505, WM8650 and WM8850.
864 config DEBUG_LL_UART_NONE
865 bool "No low-level debugging UART"
866 depends on !ARCH_MULTIPLATFORM
867 help
868 Say Y here if your platform doesn't provide a UART option
869 above. This relies on your platform choosing the right UART
870 definition internally in order for low-level debugging to
871 work.
873 config DEBUG_ICEDCC
874 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
875 help
876 Say Y here if you want the debug print routines to direct
877 their output to the EmbeddedICE macrocell's DCC channel using
878 co-processor 14. This is known to work on the ARM9 style ICE
879 channel and on the XScale with the PEEDI.
881 Note that the system will appear to hang during boot if there
882 is nothing connected to read from the DCC.
884 config DEBUG_SEMIHOSTING
885 bool "Kernel low-level debug output via semihosting I/O"
886 help
887 Semihosting enables code running on an ARM target to use
888 the I/O facilities on a host debugger/emulator through a
889 simple SVC call. The host debugger or emulator must have
890 semihosting enabled for the special svc call to be trapped
891 otherwise the kernel will crash.
893 This is known to work with OpenOCD, as well as
894 ARM's Fast Models, or any other controlling environment
895 that implements semihosting.
897 For more details about semihosting, please see
898 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
900 config DEBUG_LL_UART_8250
901 bool "Kernel low-level debugging via 8250 UART"
902 help
903 Say Y here if you wish the debug print routes to direct
904 their output to an 8250 UART. You can use this option
905 to provide the parameters for the 8250 UART rather than
906 selecting one of the platform specific options above if
907 you know the parameters for the port.
909 This option is preferred over the platform specific
910 options; the platform specific options are deprecated
911 and will be soon removed.
913 config DEBUG_LL_UART_EFM32
914 bool "Kernel low-level debugging via efm32 UART"
915 depends on ARCH_EFM32
916 help
917 Say Y here if you want the debug print routines to direct
918 their output to an UART or USART port on efm32 based
919 machines. Use the following addresses for DEBUG_UART_PHYS:
921 0x4000c000 | USART0
922 0x4000c400 | USART1
923 0x4000c800 | USART2
924 0x4000e000 | UART0
925 0x4000e400 | UART1
927 config DEBUG_LL_UART_PL01X
928 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
929 help
930 Say Y here if you wish the debug print routes to direct
931 their output to a PL01x Primecell UART. You can use
932 this option to provide the parameters for the UART
933 rather than selecting one of the platform specific
934 options above if you know the parameters for the port.
936 This option is preferred over the platform specific
937 options; the platform specific options are deprecated
938 and will be soon removed.
940 endchoice
942 config DEBUG_EXYNOS_UART
943 bool
945 config DEBUG_S3C2410_UART
946 bool
947 select DEBUG_S3C24XX_UART
949 config DEBUG_S3C24XX_UART
950 bool
952 config DEBUG_OMAP2PLUS_UART
953 bool
954 depends on ARCH_OMAP2PLUS
956 config DEBUG_IMX_UART_PORT
957 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
958 DEBUG_IMX25_UART || \
959 DEBUG_IMX21_IMX27_UART || \
960 DEBUG_IMX31_UART || \
961 DEBUG_IMX35_UART || \
962 DEBUG_IMX50_UART || \
963 DEBUG_IMX51_UART || \
964 DEBUG_IMX53_UART || \
965 DEBUG_IMX6Q_UART || \
966 DEBUG_IMX6SL_UART || \
967 DEBUG_IMX6SX_UART
968 default 1
969 depends on ARCH_MXC
970 help
971 Choose UART port on which kernel low-level debug messages
972 should be output.
974 config DEBUG_VF_UART_PORT
975 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
976 default 1
977 range 0 3
978 depends on SOC_VF610
979 help
980 Choose UART port on which kernel low-level debug messages
981 should be output.
983 config DEBUG_TEGRA_UART
984 bool
985 depends on ARCH_TEGRA
987 config DEBUG_STI_UART
988 bool
989 depends on ARCH_STI
991 config DEBUG_LL_INCLUDE
992 string
993 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
994 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
995 default "debug/exynos.S" if DEBUG_EXYNOS_UART
996 default "debug/efm32.S" if DEBUG_LL_UART_EFM32
997 default "debug/icedcc.S" if DEBUG_ICEDCC
998 default "debug/imx.S" if DEBUG_IMX1_UART || \
999 DEBUG_IMX25_UART || \
1000 DEBUG_IMX21_IMX27_UART || \
1001 DEBUG_IMX31_UART || \
1002 DEBUG_IMX35_UART || \
1003 DEBUG_IMX50_UART || \
1004 DEBUG_IMX51_UART || \
1005 DEBUG_IMX53_UART ||\
1006 DEBUG_IMX6Q_UART || \
1007 DEBUG_IMX6SL_UART || \
1008 DEBUG_IMX6SX_UART
1009 default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
1010 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1011 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1012 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
1013 default "debug/sti.S" if DEBUG_STI_UART
1014 default "debug/tegra.S" if DEBUG_TEGRA_UART
1015 default "debug/ux500.S" if DEBUG_UX500_UART
1016 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1017 default "debug/vf.S" if DEBUG_VF_UART
1018 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1019 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1020 default "mach/debug-macro.S"
1022 # Compatibility options for PL01x
1023 config DEBUG_UART_PL01X
1024 def_bool ARCH_EP93XX || \
1025 ARCH_INTEGRATOR || \
1026 ARCH_SPEAR3XX || \
1027 ARCH_SPEAR6XX || \
1028 ARCH_SPEAR13XX || \
1029 ARCH_VERSATILE
1031 # Compatibility options for 8250
1032 config DEBUG_UART_8250
1033 def_bool ARCH_DOVE || ARCH_EBSA110 || \
1034 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1035 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1036 ARCH_IOP33X || ARCH_IXP4XX || ARCH_KIRKWOOD || \
1037 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1039 config DEBUG_UART_PHYS
1040 hex "Physical base address of debug UART"
1041 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1042 default 0x01c28000 if DEBUG_SUNXI_UART0
1043 default 0x01c28400 if DEBUG_SUNXI_UART1
1044 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1045 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1046 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1047 default 0x02531000 if DEBUG_KEYSTONE_UART1
1048 default 0x03010fe0 if ARCH_RPC
1049 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \
1050 DEBUG_VEXPRESS_UART0_CA9
1051 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1052 default 0x10124000 if DEBUG_RK3X_UART0
1053 default 0x10126000 if DEBUG_RK3X_UART1
1054 default 0x101f1000 if ARCH_VERSATILE
1055 default 0x101fb000 if DEBUG_NOMADIK_UART
1056 default 0x16000000 if ARCH_INTEGRATOR
1057 default 0x18000300 if DEBUG_BCM_5301X
1058 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1059 default 0x20060000 if DEBUG_RK29_UART0
1060 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1061 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1062 default 0x20201000 if DEBUG_BCM2835
1063 default 0x3e000000 if DEBUG_BCM_KONA_UART
1064 default 0x4000e400 if DEBUG_LL_UART_EFM32
1065 default 0x40090000 if ARCH_LPC32XX
1066 default 0x40100000 if DEBUG_PXA_UART1
1067 default 0x42000000 if ARCH_GEMINI
1068 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1069 DEBUG_S3C2410_UART0)
1070 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1071 DEBUG_S3C2410_UART1)
1072 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1073 DEBUG_S3C2410_UART2)
1074 default 0x7c0003f8 if FOOTBRIDGE
1075 default 0x80070000 if DEBUG_IMX23_UART
1076 default 0x80074000 if DEBUG_IMX28_UART
1077 default 0x80230000 if DEBUG_PICOXCELL_UART
1078 default 0x808c0000 if ARCH_EP93XX
1079 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1080 default 0xa9a00000 if DEBUG_MSM_UART
1081 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1082 default 0xc0013000 if DEBUG_U300_UART
1083 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1084 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1085 default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1086 default 0xd0012000 if DEBUG_MVEBU_UART
1087 default 0xd4017000 if DEBUG_MMP_UART2
1088 default 0xd4018000 if DEBUG_MMP_UART3
1089 default 0xe0000000 if ARCH_SPEAR13XX
1090 default 0xf0000be0 if ARCH_EBSA110
1091 default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE
1092 default 0xf1012000 if ARCH_DOVE || ARCH_KIRKWOOD || ARCH_MV78XX0 || \
1093 ARCH_ORION5X
1094 default 0xf7fc9000 if DEBUG_BERLIN_UART
1095 default 0xf8b00000 if DEBUG_HI3716_UART
1096 default 0xf991e000 if DEBUG_QCOM_UARTDM
1097 default 0xfcb00000 if DEBUG_HI3620_UART
1098 default 0xfe800000 if ARCH_IOP32X
1099 default 0xffc02000 if DEBUG_SOCFPGA_UART
1100 default 0xffd82340 if ARCH_IOP13XX
1101 default 0xfff36000 if DEBUG_HIGHBANK_UART
1102 default 0xfffff700 if ARCH_IOP33X
1103 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1104 DEBUG_LL_UART_EFM32 || \
1105 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1106 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1108 config DEBUG_UART_VIRT
1109 hex "Virtual base address of debug UART"
1110 default 0xe0010fe0 if ARCH_RPC
1111 default 0xe1000000 if DEBUG_MSM_UART
1112 default 0xf0000be0 if ARCH_EBSA110
1113 default 0xf0009000 if DEBUG_CNS3XXX
1114 default 0xf01fb000 if DEBUG_NOMADIK_UART
1115 default 0xf0201000 if DEBUG_BCM2835
1116 default 0xf1000300 if DEBUG_BCM_5301X
1117 default 0xf11f1000 if ARCH_VERSATILE
1118 default 0xf1600000 if ARCH_INTEGRATOR
1119 default 0xf1c28000 if DEBUG_SUNXI_UART0
1120 default 0xf1c28400 if DEBUG_SUNXI_UART1
1121 default 0xf2100000 if DEBUG_PXA_UART1
1122 default 0xf4090000 if ARCH_LPC32XX
1123 default 0xf4200000 if ARCH_GEMINI
1124 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1125 DEBUG_S3C2410_UART0)
1126 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1127 DEBUG_S3C2410_UART1)
1128 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1129 DEBUG_S3C2410_UART2)
1130 default 0xf7fc9000 if DEBUG_BERLIN_UART
1131 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1132 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1133 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1134 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1135 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1136 default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1137 default 0xfd000000 if ARCH_SPEAR13XX
1138 default 0xfd012000 if ARCH_MV78XX0
1139 default 0xfde12000 if ARCH_DOVE
1140 default 0xfe012000 if ARCH_ORION5X
1141 default 0xfe017000 if DEBUG_MMP_UART2
1142 default 0xfe018000 if DEBUG_MMP_UART3
1143 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1144 default 0xfe230000 if DEBUG_PICOXCELL_UART
1145 default 0xfe300000 if DEBUG_BCM_KONA_UART
1146 default 0xfe800000 if ARCH_IOP32X
1147 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HI3716_UART
1148 default 0xfeb24000 if DEBUG_RK3X_UART0
1149 default 0xfeb26000 if DEBUG_RK3X_UART1
1150 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1151 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1152 default 0xfec02000 if DEBUG_SOCFPGA_UART
1153 default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
1154 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1155 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1156 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1157 default 0xfed12000 if ARCH_KIRKWOOD
1158 default 0xfed60000 if DEBUG_RK29_UART0
1159 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1160 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1161 default 0xfedc0000 if ARCH_EP93XX
1162 default 0xfee003f8 if FOOTBRIDGE
1163 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1164 default 0xfee82340 if ARCH_IOP13XX
1165 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1166 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1167 default 0xfef36000 if DEBUG_HIGHBANK_UART
1168 default 0xfefff700 if ARCH_IOP33X
1169 default 0xff003000 if DEBUG_U300_UART
1170 default DEBUG_UART_PHYS if !MMU
1171 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1172 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1173 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1175 config DEBUG_UART_8250_SHIFT
1176 int "Register offset shift for the 8250 debug UART"
1177 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1178 default 0 if FOOTBRIDGE || ARCH_IOP32X
1179 default 2
1181 config DEBUG_UART_8250_WORD
1182 bool "Use 32-bit accesses for 8250 UART"
1183 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1184 depends on DEBUG_UART_8250_SHIFT >= 2
1185 default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1186 ARCH_KEYSTONE || \
1187 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1188 DEBUG_DAVINCI_DA8XX_UART2 || \
1189 DEBUG_BCM_KONA_UART
1191 config DEBUG_UART_8250_FLOW_CONTROL
1192 bool "Enable flow control for 8250 UART"
1193 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1194 default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1196 config DEBUG_UNCOMPRESS
1197 bool
1198 depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG
1199 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1200 (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1201 help
1202 This option influences the normal decompressor output for
1203 multiplatform kernels. Normally, multiplatform kernels disable
1204 decompressor output because it is not possible to know where to
1205 send the decompressor output.
1207 When this option is set, the selected DEBUG_LL output method
1208 will be re-used for normal decompressor output on multiplatform
1209 kernels.
1212 config UNCOMPRESS_INCLUDE
1213 string
1214 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1215 PLAT_SAMSUNG || ARCH_EFM32
1216 default "mach/uncompress.h"
1218 config EARLY_PRINTK
1219 bool "Early printk"
1220 depends on DEBUG_LL
1221 help
1222 Say Y here if you want to have an early console using the
1223 kernel low-level debugging functions. Add earlyprintk to your
1224 kernel parameters to enable this console.
1226 config OC_ETM
1227 bool "On-chip ETM and ETB"
1228 depends on ARM_AMBA
1229 help
1230 Enables the on-chip embedded trace macrocell and embedded trace
1231 buffer driver that will allow you to collect traces of the
1232 kernel code.
1234 config ARM_KPROBES_TEST
1235 tristate "Kprobes test module"
1236 depends on KPROBES && MODULES
1237 help
1238 Perform tests of kprobes API and instruction set simulation.
1240 config PID_IN_CONTEXTIDR
1241 bool "Write the current PID to the CONTEXTIDR register"
1242 depends on CPU_COPY_V6
1243 help
1244 Enabling this option causes the kernel to write the current PID to
1245 the PROCID field of the CONTEXTIDR register, at the expense of some
1246 additional instructions during context switch. Say Y here only if you
1247 are planning to use hardware trace tools with this kernel.
1249 config DEBUG_SET_MODULE_RONX
1250 bool "Set loadable kernel module data as NX and text as RO"
1251 depends on MODULES
1252 ---help---
1253 This option helps catch unintended modifications to loadable
1254 kernel module's text and read-only data. It also prevents execution
1255 of module data. Such protection may interfere with run-time code
1256 patching and dynamic kernel tracing - and they might also protect
1257 against certain classes of kernel exploits.
1258 If in doubt, say "N".
1260 endmenu