aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/Kconfig.debug
blob: f7c0efc615c7c056b41716845f145371ee8c85a6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
menu "Kernel hacking"

source "lib/Kconfig.debug"

config STRICT_DEVMEM
	bool "Filter access to /dev/mem"
	depends on MMU
	---help---
	  If this option is disabled, you allow userspace (root) access to all
	  of memory, including kernel and userspace memory. Accidental
	  access to this is obviously disastrous, but specific access can
	  be used by people debugging the kernel.

	  If this option is switched on, the /dev/mem file only allows
	  userspace access to memory mapped peripherals.

          If in doubt, say Y.

# RMK wants arm kernels compiled with frame pointers or stack unwinding.
# If you know what you are doing and are willing to live without stack
# traces, you can get a slightly smaller kernel by setting this option to
# n, but then RMK will have to kill you ;).
config FRAME_POINTER
	bool
	depends on !THUMB2_KERNEL
	default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
	help
	  If you say N here, the resulting kernel will be slightly smaller and
	  faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
	  when a problem occurs with the kernel, the information that is
	  reported is severely limited.

config ARM_UNWIND
	bool "Enable stack unwinding support (EXPERIMENTAL)"
	depends on AEABI
	default y
	help
	  This option enables stack unwinding support in the kernel
	  using the information automatically generated by the
	  compiler. The resulting kernel image is slightly bigger but
	  the performance is not affected. Currently, this feature
	  only works with EABI compilers. If unsure say Y.

config OLD_MCOUNT
	bool
	depends on FUNCTION_TRACER && FRAME_POINTER
	default y

config DEBUG_USER
	bool "Verbose user fault messages"
	help
	  When a user program crashes due to an exception, the kernel can
	  print a brief message explaining what the problem was. This is
	  sometimes helpful for debugging but serves no purpose on a
	  production system. Most people should say N here.

	  In addition, you need to pass user_debug=N on the kernel command
	  line to enable this feature.  N consists of the sum of:

	      1 - undefined instruction events
	      2 - system calls
	      4 - invalid data aborts
	      8 - SIGSEGV faults
	     16 - SIGBUS faults

# These options are only for real kernel hackers who want to get their hands dirty.
config DEBUG_LL
	bool "Kernel low-level debugging functions (read help!)"
	depends on DEBUG_KERNEL
	help
	  Say Y here to include definitions of printascii, printch, printhex
	  in the kernel.  This is helpful if you are debugging code that
	  executes before the console is initialized.

	  Note that selecting this option will limit the kernel to a single
	  UART definition, as specified below. Attempting to boot the kernel
	  image on a different platform *will not work*, so this option should
	  not be enabled for kernels that are intended to be portable.

choice
	prompt "Kernel low-level debugging port"
	depends on DEBUG_LL

	config AT91_DEBUG_LL_DBGU0
		bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
		depends on HAVE_AT91_DBGU0

	config AT91_DEBUG_LL_DBGU1
		bool "Kernel low-level debugging on 9263 and 9g45"
		depends on HAVE_AT91_DBGU1

	config DEBUG_BCM2835
		bool "Kernel low-level debugging on BCM2835 PL011 UART"
		depends on ARCH_BCM2835

	config DEBUG_CLPS711X_UART1
		bool "Kernel low-level debugging messages via UART1"
		depends on ARCH_CLPS711X
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the first serial port on these devices.

	config DEBUG_CLPS711X_UART2
		bool "Kernel low-level debugging messages via UART2"
		depends on ARCH_CLPS711X
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the second serial port on these devices.

	config DEBUG_CNS3XXX
		bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
		depends on ARCH_CNS3XXX
		help
		  Say Y here if you want the debug print routines to direct
                  their output to the CNS3xxx UART0.

	config DEBUG_DAVINCI_DA8XX_UART1
		bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
		depends on ARCH_DAVINCI_DA8XX
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART1 serial port on DaVinci DA8XX devices.

	config DEBUG_DAVINCI_DA8XX_UART2
		bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
		depends on ARCH_DAVINCI_DA8XX
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART2 serial port on DaVinci DA8XX devices.

	config DEBUG_DAVINCI_DMx_UART0
		bool "Kernel low-level debugging on DaVinci DMx using UART0"
		depends on ARCH_DAVINCI_DMx
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART0 serial port on DaVinci DMx devices.

	config DEBUG_DAVINCI_TNETV107X_UART1
		bool "Kernel low-level debugging on DaVinci TNETV107x using UART1"
		depends on ARCH_DAVINCI_TNETV107X
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART1 serial port on DaVinci TNETV107X
		  devices.

	config DEBUG_ZYNQ_UART0
		bool "Kernel low-level debugging on Xilinx Zynq using UART0"
		depends on ARCH_ZYNQ
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART0 on the Zynq platform.

	config DEBUG_ZYNQ_UART1
		bool "Kernel low-level debugging on Xilinx Zynq using UART1"
		depends on ARCH_ZYNQ
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART1 on the Zynq platform.

		  If you have a ZC702 board and want early boot messages to
		  appear on the USB serial adaptor, select this option.

	config DEBUG_DC21285_PORT
		bool "Kernel low-level debugging messages via footbridge serial port"
		depends on FOOTBRIDGE
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the serial port in the DC21285 (Footbridge).

	config DEBUG_FOOTBRIDGE_COM1
		bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
		depends on FOOTBRIDGE
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the 8250 at PCI COM1.

	config DEBUG_HIGHBANK_UART
		bool "Kernel low-level debugging messages via Highbank UART"
		depends on ARCH_HIGHBANK
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the UART on Highbank based devices.

	config DEBUG_IMX1_UART
		bool "i.MX1 Debug UART"
		depends on SOC_IMX1
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX1.

	config DEBUG_IMX23_UART
		bool "i.MX23 Debug UART"
		depends on SOC_IMX23
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX23.

	config DEBUG_IMX25_UART
		bool "i.MX25 Debug UART"
		depends on SOC_IMX25
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX25.

	config DEBUG_IMX21_IMX27_UART
		bool "i.MX21 and i.MX27 Debug UART"
		depends on SOC_IMX21 || SOC_IMX27
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX21 or i.MX27.

	config DEBUG_IMX28_UART
		bool "i.MX28 Debug UART"
		depends on SOC_IMX28
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX28.

	config DEBUG_IMX31_UART
		bool "i.MX31 Debug UART"
		depends on SOC_IMX31
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX31.

	config DEBUG_IMX35_UART
		bool "i.MX35 Debug UART"
		depends on SOC_IMX35
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX35.

	config DEBUG_IMX51_UART
		bool "i.MX51 Debug UART"
		depends on SOC_IMX51
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX51.

	config DEBUG_IMX53_UART
		bool "i.MX53 Debug UART"
		depends on SOC_IMX53
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX53.

	config DEBUG_IMX6Q_UART
		bool "i.MX6Q/DL Debug UART"
		depends on SOC_IMX6Q
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX6Q/DL.

	config DEBUG_IMX6SL_UART
		bool "i.MX6SL Debug UART"
		depends on SOC_IMX6SL
		help
		  Say Y here if you want kernel low-level debugging support
		  on i.MX6SL.

	config DEBUG_KEYSTONE_UART0
		bool "Kernel low-level debugging on KEYSTONE2 using UART0"
		depends on ARCH_KEYSTONE
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART0 serial port on KEYSTONE2 devices.

	config DEBUG_KEYSTONE_UART1
		bool "Kernel low-level debugging on KEYSTONE2 using UART1"
		depends on ARCH_KEYSTONE
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART1 serial port on KEYSTONE2 devices.

	config DEBUG_MMP_UART2
		bool "Kernel low-level debugging message via MMP UART2"
		depends on ARCH_MMP
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on MMP UART2.

	config DEBUG_MMP_UART3
		bool "Kernel low-level debugging message via MMP UART3"
		depends on ARCH_MMP
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on MMP UART3.

	config DEBUG_MSM_UART1
		bool "Kernel low-level debugging messages via MSM UART1"
		depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the first serial port on MSM devices.

	config DEBUG_MSM_UART2
		bool "Kernel low-level debugging messages via MSM UART2"
		depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the second serial port on MSM devices.

	config DEBUG_MSM_UART3
		bool "Kernel low-level debugging messages via MSM UART3"
		depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the third serial port on MSM devices.

	config DEBUG_MSM8660_UART
		bool "Kernel low-level debugging messages via MSM 8660 UART"
		depends on ARCH_MSM8X60
		select MSM_HAS_DEBUG_UART_HS
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the serial port on MSM 8660 devices.

	config DEBUG_MSM8960_UART
		bool "Kernel low-level debugging messages via MSM 8960 UART"
		depends on ARCH_MSM8960
		select MSM_HAS_DEBUG_UART_HS
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the serial port on MSM 8960 devices.

	config DEBUG_MVEBU_UART
		bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
		depends on ARCH_MVEBU
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on MVEBU based platforms.

		  This option should be used with the old bootloaders
		  that left the internal registers mapped at
		  0xd0000000. As of today, this is the case on
		  platforms such as the Globalscale Mirabox or the
		  Plathome OpenBlocks AX3, when using the original
		  bootloader.

		  If the wrong DEBUG_MVEBU_UART* option is selected,
		  when u-boot hands over to the kernel, the system
		  silently crashes, with no serial output at all.

	config DEBUG_MVEBU_UART_ALTERNATE
		bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
		depends on ARCH_MVEBU
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on MVEBU based platforms.

		  This option should be used with the new bootloaders
		  that remap the internal registers at 0xf1000000.

		  If the wrong DEBUG_MVEBU_UART* option is selected,
		  when u-boot hands over to the kernel, the system
		  silently crashes, with no serial output at all.

	config DEBUG_NOMADIK_UART
		bool "Kernel low-level debugging messages via NOMADIK UART"
		depends on ARCH_NOMADIK
		help
		  Say Y here if you want kernel low-level debugging support
		  on NOMADIK based platforms.

	config DEBUG_NSPIRE_CLASSIC_UART
		bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
		depends on ARCH_NSPIRE
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on TI-NSPIRE classic models.

	config DEBUG_NSPIRE_CX_UART
		bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
		depends on ARCH_NSPIRE
		help
		  Say Y here if you want kernel low-level debugging support
		  on TI-NSPIRE CX models.

	config DEBUG_OMAP2UART1
		bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART
		help
		  This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
		  omap3 torpedo and 3530 lv som.

	config DEBUG_OMAP2UART2
		bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_OMAP2UART3
		bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_OMAP3UART3
		bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART
		help
		  This covers at least cm_t3x, beagle, crane, devkit8000,
		  igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
		  and 3517evm.

	config DEBUG_OMAP4UART3
		bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_OMAP3UART4
		bool "Kernel low-level debugging messages via OMAP36XX UART4"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_OMAP4UART4
		bool "Kernel low-level debugging messages via OMAP4/5 UART4"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_TI81XXUART1
		bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_TI81XXUART2
		bool "Kernel low-level debugging messages via TI81XX UART2"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_TI81XXUART3
		bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_AM33XXUART1
		bool "Kernel low-level debugging messages via AM33XX UART1"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_ZOOM_UART
		bool "Kernel low-level debugging messages via Zoom2/3 UART"
		depends on ARCH_OMAP2PLUS
		select DEBUG_OMAP2PLUS_UART

	config DEBUG_PICOXCELL_UART
		depends on ARCH_PICOXCELL
		bool "Use PicoXcell UART for low-level debug"
		help
		  Say Y here if you want kernel low-level debugging support
		  on PicoXcell based platforms.

	config DEBUG_PXA_UART1
		depends on ARCH_PXA
		bool "Use PXA UART1 for low-level debug"
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on PXA UART1.

	config DEBUG_REALVIEW_STD_PORT
		bool "RealView Default UART"
		depends on ARCH_REALVIEW
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the serial port on RealView EB, PB11MP, PBA8
		  and PBX platforms.

	config DEBUG_REALVIEW_PB1176_PORT
		bool "RealView PB1176 UART"
		depends on MACH_REALVIEW_PB1176
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the standard serial port on the RealView
		  PB1176 platform.

	config DEBUG_RK29_UART0
		bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_RK29_UART1
		bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_RK29_UART2
		bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_RK3X_UART0
		bool "Kernel low-level debugging messages via Rockchip RK3X UART0"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_RK3X_UART1
		bool "Kernel low-level debugging messages via Rockchip RK3X UART1"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_RK3X_UART2
		bool "Kernel low-level debugging messages via Rockchip RK3X UART2"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_RK3X_UART3
		bool "Kernel low-level debugging messages via Rockchip RK3X UART3"
		depends on ARCH_ROCKCHIP
		select DEBUG_ROCKCHIP_UART
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Rockchip based platforms.

	config DEBUG_S3C_UART0
		depends on PLAT_SAMSUNG
		select DEBUG_EXYNOS_UART if ARCH_EXYNOS
		bool "Use S3C UART 0 for low-level debug"
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART 0. The port must have been initialised
		  by the boot-loader before use.

		  The uncompressor code port configuration is now handled
		  by CONFIG_S3C_LOWLEVEL_UART_PORT.

	config DEBUG_S3C_UART1
		depends on PLAT_SAMSUNG
		select DEBUG_EXYNOS_UART if ARCH_EXYNOS
		bool "Use S3C UART 1 for low-level debug"
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART 1. The port must have been initialised
		  by the boot-loader before use.

		  The uncompressor code port configuration is now handled
		  by CONFIG_S3C_LOWLEVEL_UART_PORT.

	config DEBUG_S3C_UART2
		depends on PLAT_SAMSUNG
		select DEBUG_EXYNOS_UART if ARCH_EXYNOS
		bool "Use S3C UART 2 for low-level debug"
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART 2. The port must have been initialised
		  by the boot-loader before use.

		  The uncompressor code port configuration is now handled
		  by CONFIG_S3C_LOWLEVEL_UART_PORT.

	config DEBUG_S3C_UART3
		depends on PLAT_SAMSUNG && ARCH_EXYNOS
		select DEBUG_EXYNOS_UART
		bool "Use S3C UART 3 for low-level debug"
		help
		  Say Y here if you want the debug print routines to direct
		  their output to UART 3. The port must have been initialised
		  by the boot-loader before use.

		  The uncompressor code port configuration is now handled
		  by CONFIG_S3C_LOWLEVEL_UART_PORT.

	config DEBUG_SOCFPGA_UART
		depends on ARCH_SOCFPGA
		bool "Use SOCFPGA UART for low-level debug"
		help
		  Say Y here if you want kernel low-level debugging support
		  on SOCFPGA based platforms.

	config DEBUG_SUNXI_UART0
		bool "Kernel low-level debugging messages via sunXi UART0"
		depends on ARCH_SUNXI
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Allwinner A1X based platforms on the UART0.

	config DEBUG_SUNXI_UART1
		bool "Kernel low-level debugging messages via sunXi UART1"
		depends on ARCH_SUNXI
		select DEBUG_UART_8250
		help
		  Say Y here if you want kernel low-level debugging support
		  on Allwinner A1X based platforms on the UART1.

	config TEGRA_DEBUG_UART_AUTO_ODMDATA
		bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
		depends on ARCH_TEGRA
		select DEBUG_TEGRA_UART
		help
		  Automatically determines which UART to use for low-level
		  debug based on the ODMDATA value. This value is part of
		  the BCT, and is written to the boot memory device using
		  nvflash, or other flashing tool.  When bits 19:18 are 3,
		  then bits 17:15 indicate which UART to use; 0/1/2/3/4
		  are UART A/B/C/D/E.

	config TEGRA_DEBUG_UARTA
		bool "Kernel low-level debugging messages via Tegra UART A"
		depends on ARCH_TEGRA
		select DEBUG_TEGRA_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on Tegra based platforms.

	config TEGRA_DEBUG_UARTB
		bool "Kernel low-level debugging messages via Tegra UART B"
		depends on ARCH_TEGRA
		select DEBUG_TEGRA_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on Tegra based platforms.

	config TEGRA_DEBUG_UARTC
		bool "Kernel low-level debugging messages via Tegra UART C"
		depends on ARCH_TEGRA
		select DEBUG_TEGRA_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on Tegra based platforms.

	config TEGRA_DEBUG_UARTD
		bool "Kernel low-level debugging messages via Tegra UART D"
		depends on ARCH_TEGRA
		select DEBUG_TEGRA_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on Tegra based platforms.

	config TEGRA_DEBUG_UARTE
		bool "Kernel low-level debugging messages via Tegra UART E"
		depends on ARCH_TEGRA
		select DEBUG_TEGRA_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on Tegra based platforms.

	config DEBUG_SIRFPRIMA2_UART1
		bool "Kernel low-level debugging messages via SiRFprimaII UART1"
		depends on ARCH_PRIMA2
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the uart1 port on SiRFprimaII devices.

	config DEBUG_SIRFMARCO_UART1
		bool "Kernel low-level debugging messages via SiRFmarco UART1"
		depends on ARCH_MARCO
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the uart1 port on SiRFmarco devices.

	config STIH41X_DEBUG_ASC2
		bool "Use StiH415/416 ASC2 UART for low-level debug"
		depends on ARCH_STI
		select DEBUG_STI_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on STiH415/416 based platforms like b2000, which has
		  default UART wired up to ASC2.

		  If unsure, say N.

	config STIH41X_DEBUG_SBC_ASC1
		bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
		depends on ARCH_STI
		select DEBUG_STI_UART
		help
		  Say Y here if you want kernel low-level debugging support
		  on STiH415/416 based platforms like b2020. which has
		  default UART wired up to SBC ASC1.

		  If unsure, say N.

	config DEBUG_U300_UART
		bool "Kernel low-level debugging messages via U300 UART0"
		depends on ARCH_U300
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the uart port on U300 devices.

	config DEBUG_UX500_UART
		depends on ARCH_U8500
		bool "Use Ux500 UART for low-level debug"
		help
		  Say Y here if you want kernel low-level debugging support
		  on Ux500 based platforms.

	config DEBUG_VEXPRESS_UART0_DETECT
		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
		depends on ARCH_VEXPRESS && CPU_CP15_MMU
		help
		  This option enables a simple heuristic which tries to determine
		  the motherboard's memory map variant (original or RS1) and then
		  choose the relevant UART0 base address.

		  Note that this will only work with standard A-class core tiles,
		  and may fail with non-standard SMM or custom software models.

	config DEBUG_VEXPRESS_UART0_CA9
		bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
		depends on ARCH_VEXPRESS
		help
		  This option selects UART0 at 0x10009000. Except for custom models,
		  this applies only to the V2P-CA9 tile.

	config DEBUG_VEXPRESS_UART0_RS1
		bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
		depends on ARCH_VEXPRESS
		help
		  This option selects UART0 at 0x1c090000. This applies to most
		  of the tiles using the RS1 memory map, including all new A-class
		  core tiles, FPGA-based SMMs and software models.

	config DEBUG_VEXPRESS_UART0_CRX
		bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
		depends on ARCH_VEXPRESS && !MMU
		help
		  This option selects UART0 at 0xb0090000. This is appropriate for
		  Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7

	config DEBUG_VT8500_UART0
		bool "Use UART0 on VIA/Wondermedia SoCs"
		depends on ARCH_VT8500
		help
		  This option selects UART0 on VIA/Wondermedia System-on-a-chip
		  devices, including VT8500, WM8505, WM8650 and WM8850.

	config DEBUG_LL_UART_NONE
		bool "No low-level debugging UART"
		depends on !ARCH_MULTIPLATFORM
		help
		  Say Y here if your platform doesn't provide a UART option
		  above. This relies on your platform choosing the right UART
		  definition internally in order for low-level debugging to
		  work.

	config DEBUG_ICEDCC
		bool "Kernel low-level debugging via EmbeddedICE DCC channel"
		help
		  Say Y here if you want the debug print routines to direct
		  their output to the EmbeddedICE macrocell's DCC channel using
		  co-processor 14. This is known to work on the ARM9 style ICE
		  channel and on the XScale with the PEEDI.

		  Note that the system will appear to hang during boot if there
		  is nothing connected to read from the DCC.

	config DEBUG_SEMIHOSTING
		bool "Kernel low-level debug output via semihosting I/O"
		help
		  Semihosting enables code running on an ARM target to use
		  the I/O facilities on a host debugger/emulator through a
		  simple SVC call. The host debugger or emulator must have
		  semihosting enabled for the special svc call to be trapped
		  otherwise the kernel will crash.

		  This is known to work with OpenOCD, as well as
		  ARM's Fast Models, or any other controlling environment
		  that implements semihosting.

		  For more details about semihosting, please see
		  chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.

endchoice

config DEBUG_EXYNOS_UART
	bool

config DEBUG_OMAP2PLUS_UART
	bool
	depends on ARCH_OMAP2PLUS

config DEBUG_IMX_UART_PORT
	int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
						DEBUG_IMX25_UART || \
						DEBUG_IMX21_IMX27_UART || \
						DEBUG_IMX31_UART || \
						DEBUG_IMX35_UART || \
						DEBUG_IMX51_UART || \
						DEBUG_IMX53_UART || \
						DEBUG_IMX6Q_UART || \
						DEBUG_IMX6SL_UART
	default 1
	depends on ARCH_MXC
	help
	  Choose UART port on which kernel low-level debug messages
	  should be output.

config DEBUG_ROCKCHIP_UART
	bool
	depends on ARCH_ROCKCHIP

config DEBUG_TEGRA_UART
	bool
	depends on ARCH_TEGRA

config DEBUG_STI_UART
	bool
	depends on ARCH_STI

config DEBUG_LL_INCLUDE
	string
	default "debug/bcm2835.S" if DEBUG_BCM2835
	default "debug/cns3xxx.S" if DEBUG_CNS3XXX
	default "debug/exynos.S" if DEBUG_EXYNOS_UART
	default "debug/highbank.S" if DEBUG_HIGHBANK_UART
	default "debug/icedcc.S" if DEBUG_ICEDCC
	default "debug/imx.S" if DEBUG_IMX1_UART || \
				 DEBUG_IMX25_UART || \
				 DEBUG_IMX21_IMX27_UART || \
				 DEBUG_IMX31_UART || \
				 DEBUG_IMX35_UART || \
				 DEBUG_IMX51_UART || \
				 DEBUG_IMX53_UART ||\
				 DEBUG_IMX6Q_UART || \
				 DEBUG_IMX6SL_UART
	default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \
				      DEBUG_KEYSTONE_UART1
	default "debug/mvebu.S" if DEBUG_MVEBU_UART || \
				   DEBUG_MVEBU_UART_ALTERNATE
	default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
	default "debug/nomadik.S" if DEBUG_NOMADIK_UART
	default "debug/nspire.S" if 	DEBUG_NSPIRE_CX_UART || \
					DEBUG_NSPIRE_CLASSIC_UART
	default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
	default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART
	default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \
				 DEBUG_MMP_UART3
	default "debug/rockchip.S" if DEBUG_ROCKCHIP_UART
	default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
	default "debug/socfpga.S" if DEBUG_SOCFPGA_UART
	default "debug/sti.S" if DEBUG_STI_UART
	default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1
	default "debug/tegra.S" if DEBUG_TEGRA_UART
	default "debug/u300.S" if DEBUG_U300_UART
	default "debug/ux500.S" if DEBUG_UX500_UART
	default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \
		DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1 || \
		DEBUG_VEXPRESS_UART0_CRX
	default "debug/vt8500.S" if DEBUG_VT8500_UART0
	default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
	default "mach/debug-macro.S"

config DEBUG_UART_8250
	def_bool ARCH_DOVE || ARCH_EBSA110 || \
		(FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
		ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
		ARCH_IOP33X || ARCH_IXP4XX || ARCH_KIRKWOOD || \
		ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC

config DEBUG_UART_8250_SHIFT
	int "Register offset shift for the 8250 debug UART"
	depends on DEBUG_UART_8250
	default 0 if FOOTBRIDGE || ARCH_IOP32X
	default 2

config DEBUG_UART_8250_FLOW_CONTROL
	bool "Enable flow control for 8250 UART"
	depends on DEBUG_UART_8250
	default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC

config DEBUG_UNCOMPRESS
	bool
	depends on ARCH_MULTIPLATFORM
	default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
		     !DEBUG_TEGRA_UART
	help
	  This option influences the normal decompressor output for
	  multiplatform kernels.  Normally, multiplatform kernels disable
	  decompressor output because it is not possible to know where to
	  send the decompressor output.

	  When this option is set, the selected DEBUG_LL output method
	  will be re-used for normal decompressor output on multiplatform
	  kernels.
	  

config UNCOMPRESS_INCLUDE
	string
	default "debug/uncompress.h" if ARCH_MULTIPLATFORM
	default "mach/uncompress.h"

config EARLY_PRINTK
	bool "Early printk"
	depends on DEBUG_LL
	help
	  Say Y here if you want to have an early console using the
	  kernel low-level debugging functions. Add earlyprintk to your
	  kernel parameters to enable this console.

config OC_ETM
	bool "On-chip ETM and ETB"
	depends on ARM_AMBA
	help
	  Enables the on-chip embedded trace macrocell and embedded trace
	  buffer driver that will allow you to collect traces of the
	  kernel code.

config ARM_KPROBES_TEST
	tristate "Kprobes test module"
	depends on KPROBES && MODULES
	help
	  Perform tests of kprobes API and instruction set simulation.

config PID_IN_CONTEXTIDR
	bool "Write the current PID to the CONTEXTIDR register"
	depends on CPU_COPY_V6
	help
	  Enabling this option causes the kernel to write the current PID to
	  the PROCID field of the CONTEXTIDR register, at the expense of some
	  additional instructions during context switch. Say Y here only if you
	  are planning to use hardware trace tools with this kernel.

endmenu