Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/arch/arm/Kconfig.debug

  1 menu "Kernel hacking"
  2 
  3 source "lib/Kconfig.debug"
  4 
  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"
 16 
 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.
 25 
 26           If this option is switched on, the /dev/mem file only allows
 27           userspace access to memory mapped peripherals.
 28 
 29           If in doubt, say Y.
 30 
 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.
 44 
 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.
 55 
 56 config OLD_MCOUNT
 57         bool
 58         depends on FUNCTION_TRACER && FRAME_POINTER
 59         default y
 60 
 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.
 68 
 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:
 71 
 72               1 - undefined instruction events
 73               2 - system calls
 74               4 - invalid data aborts
 75               8 - SIGSEGV faults
 76              16 - SIGBUS faults
 77 
 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.
 86 
 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.
 91 
 92 choice
 93         prompt "Kernel low-level debugging port"
 94         depends on DEBUG_LL
 95 
 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
 99 
100         config AT91_DEBUG_LL_DBGU1
101                 bool "Kernel low-level debugging on 9263 and 9g45"
102                 depends on HAVE_AT91_DBGU1
103 
104         config DEBUG_BCM2835
105                 bool "Kernel low-level debugging on BCM2835 PL011 UART"
106                 depends on ARCH_BCM2835
107                 select DEBUG_UART_PL01X
108 
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
113 
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...)
124 
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.
132 
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.
139 
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.
146 
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.
154 
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.
162 
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.
170 
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.
178 
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.
185 
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.
192 
193                   If you have a ZC702 board and want early boot messages to
194                   appear on the USB serial adaptor, select this option.
195 
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).
202 
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.
209 
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.
217 
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.
225 
226         config DEBUG_HIX5HD2_UART
227                 bool "Hisilicon Hix5hd2 Debug UART"
228                 depends on ARCH_HIX5HD2
229                 select DEBUG_UART_PL01X
230                 help
231                   Say Y here if you want kernel low-level debugging support
232                   on Hix5hd2 UART.
233 
234         config DEBUG_HIGHBANK_UART
235                 bool "Kernel low-level debugging messages via Highbank UART"
236                 depends on ARCH_HIGHBANK
237                 select DEBUG_UART_PL01X
238                 help
239                   Say Y here if you want the debug print routines to direct
240                   their output to the UART on Highbank based devices.
241 
242         config DEBUG_IMX1_UART
243                 bool "i.MX1 Debug UART"
244                 depends on SOC_IMX1
245                 help
246                   Say Y here if you want kernel low-level debugging support
247                   on i.MX1.
248 
249         config DEBUG_IMX23_UART
250                 bool "i.MX23 Debug UART"
251                 depends on SOC_IMX23
252                 select DEBUG_UART_PL01X
253                 help
254                   Say Y here if you want kernel low-level debugging support
255                   on i.MX23.
256 
257         config DEBUG_IMX25_UART
258                 bool "i.MX25 Debug UART"
259                 depends on SOC_IMX25
260                 help
261                   Say Y here if you want kernel low-level debugging support
262                   on i.MX25.
263 
264         config DEBUG_IMX21_IMX27_UART
265                 bool "i.MX21 and i.MX27 Debug UART"
266                 depends on SOC_IMX21 || SOC_IMX27
267                 help
268                   Say Y here if you want kernel low-level debugging support
269                   on i.MX21 or i.MX27.
270 
271         config DEBUG_IMX28_UART
272                 bool "i.MX28 Debug UART"
273                 depends on SOC_IMX28
274                 select DEBUG_UART_PL01X
275                 help
276                   Say Y here if you want kernel low-level debugging support
277                   on i.MX28.
278 
279         config DEBUG_IMX31_UART
280                 bool "i.MX31 Debug UART"
281                 depends on SOC_IMX31
282                 help
283                   Say Y here if you want kernel low-level debugging support
284                   on i.MX31.
285 
286         config DEBUG_IMX35_UART
287                 bool "i.MX35 Debug UART"
288                 depends on SOC_IMX35
289                 help
290                   Say Y here if you want kernel low-level debugging support
291                   on i.MX35.
292 
293         config DEBUG_IMX50_UART
294                 bool "i.MX50 Debug UART"
295                 depends on SOC_IMX50
296                 help
297                   Say Y here if you want kernel low-level debugging support
298                   on i.MX50.
299 
300         config DEBUG_IMX51_UART
301                 bool "i.MX51 Debug UART"
302                 depends on SOC_IMX51
303                 help
304                   Say Y here if you want kernel low-level debugging support
305                   on i.MX51.
306 
307         config DEBUG_IMX53_UART
308                 bool "i.MX53 Debug UART"
309                 depends on SOC_IMX53
310                 help
311                   Say Y here if you want kernel low-level debugging support
312                   on i.MX53.
313 
314         config DEBUG_IMX6Q_UART
315                 bool "i.MX6Q/DL Debug UART"
316                 depends on SOC_IMX6Q
317                 help
318                   Say Y here if you want kernel low-level debugging support
319                   on i.MX6Q/DL.
320 
321         config DEBUG_IMX6SL_UART
322                 bool "i.MX6SL Debug UART"
323                 depends on SOC_IMX6SL
324                 help
325                   Say Y here if you want kernel low-level debugging support
326                   on i.MX6SL.
327 
328         config DEBUG_IMX6SX_UART
329                 bool "i.MX6SX Debug UART"
330                 depends on SOC_IMX6SX
331                 help
332                   Say Y here if you want kernel low-level debugging support
333                   on i.MX6SX.
334 
335         config DEBUG_KEYSTONE_UART0
336                 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
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 UART0 serial port on KEYSTONE2 devices.
342 
343         config DEBUG_KEYSTONE_UART1
344                 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
345                 depends on ARCH_KEYSTONE
346                 select DEBUG_UART_8250
347                 help
348                   Say Y here if you want the debug print routines to direct
349                   their output to UART1 serial port on KEYSTONE2 devices.
350 
351         config DEBUG_MMP_UART2
352                 bool "Kernel low-level debugging message via MMP UART2"
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 UART2.
358 
359         config DEBUG_MMP_UART3
360                 bool "Kernel low-level debugging message via MMP UART3"
361                 depends on ARCH_MMP
362                 select DEBUG_UART_8250
363                 help
364                   Say Y here if you want kernel low-level debugging support
365                   on MMP UART3.
366 
367         config DEBUG_MSM_UART
368                 bool "Kernel low-level debugging messages via MSM UART"
369                 depends on ARCH_MSM
370                 help
371                   Say Y here if you want the debug print routines to direct
372                   their output to the serial port on MSM devices.
373 
374                   ARCH                DEBUG_UART_PHYS   DEBUG_UART_BASE   #
375                   MSM7X00A, QSD8X50   0xa9a00000        0xe1000000        UART1
376                   MSM7X00A, QSD8X50   0xa9b00000        0xe1000000        UART2
377                   MSM7X00A, QSD8X50   0xa9c00000        0xe1000000        UART3
378 
379                   MSM7X30             0xaca00000        0xe1000000        UART1
380                   MSM7X30             0xacb00000        0xe1000000        UART2
381                   MSM7X30             0xacc00000        0xe1000000        UART3
382 
383                   Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
384                   options based on your needs.
385 
386         config DEBUG_QCOM_UARTDM
387                 bool "Kernel low-level debugging messages via QCOM UARTDM"
388                 depends on ARCH_QCOM
389                 help
390                   Say Y here if you want the debug print routines to direct
391                   their output to the serial port on Qualcomm devices.
392 
393                   ARCH      DEBUG_UART_PHYS   DEBUG_UART_BASE
394                   APQ8084   0xf995e000        0xfa75e000
395                   MSM8X60   0x19c40000        0xf0040000
396                   MSM8960   0x16440000        0xf0040000
397                   MSM8974   0xf991e000        0xfa71e000
398 
399                   Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
400                   options based on your needs.
401 
402         config DEBUG_MVEBU_UART
403                 bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
404                 depends on ARCH_MVEBU
405                 select DEBUG_UART_8250
406                 help
407                   Say Y here if you want kernel low-level debugging support
408                   on MVEBU based platforms.
409 
410                   This option should be used with the old bootloaders
411                   that left the internal registers mapped at
412                   0xd0000000. As of today, this is the case on
413                   platforms such as the Globalscale Mirabox or the
414                   Plathome OpenBlocks AX3, when using the original
415                   bootloader.
416 
417                   If the wrong DEBUG_MVEBU_UART* option is selected,
418                   when u-boot hands over to the kernel, the system
419                   silently crashes, with no serial output at all.
420 
421         config DEBUG_MVEBU_UART_ALTERNATE
422                 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
423                 depends on ARCH_MVEBU
424                 select DEBUG_UART_8250
425                 help
426                   Say Y here if you want kernel low-level debugging support
427                   on MVEBU based platforms.
428 
429                   This option should be used with the new bootloaders
430                   that remap the internal registers at 0xf1000000.
431 
432                   If the wrong DEBUG_MVEBU_UART* option is selected,
433                   when u-boot hands over to the kernel, the system
434                   silently crashes, with no serial output at all.
435 
436         config DEBUG_VF_UART
437                 bool "Vybrid UART"
438                 depends on SOC_VF610
439                 help
440                   Say Y here if you want kernel low-level debugging support
441                   on Vybrid based platforms.
442 
443         config DEBUG_NOMADIK_UART
444                 bool "Kernel low-level debugging messages via NOMADIK UART"
445                 depends on ARCH_NOMADIK
446                 select DEBUG_UART_PL01X
447                 help
448                   Say Y here if you want kernel low-level debugging support
449                   on NOMADIK based platforms.
450 
451         config DEBUG_NSPIRE_CLASSIC_UART
452                 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
453                 depends on ARCH_NSPIRE
454                 select DEBUG_UART_8250
455                 help
456                   Say Y here if you want kernel low-level debugging support
457                   on TI-NSPIRE classic models.
458 
459         config DEBUG_NSPIRE_CX_UART
460                 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
461                 depends on ARCH_NSPIRE
462                 select DEBUG_UART_PL01X
463                 help
464                   Say Y here if you want kernel low-level debugging support
465                   on TI-NSPIRE CX models.
466 
467         config DEBUG_OMAP2UART1
468                 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
469                 depends on ARCH_OMAP2PLUS
470                 select DEBUG_OMAP2PLUS_UART
471                 help
472                   This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
473                   omap3 torpedo and 3530 lv som.
474 
475         config DEBUG_OMAP2UART2
476                 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
477                 depends on ARCH_OMAP2PLUS
478                 select DEBUG_OMAP2PLUS_UART
479 
480         config DEBUG_OMAP2UART3
481                 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
482                 depends on ARCH_OMAP2PLUS
483                 select DEBUG_OMAP2PLUS_UART
484 
485         config DEBUG_OMAP3UART3
486                 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
487                 depends on ARCH_OMAP2PLUS
488                 select DEBUG_OMAP2PLUS_UART
489                 help
490                   This covers at least cm_t3x, beagle, crane, devkit8000,
491                   igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
492                   and 3517evm.
493 
494         config DEBUG_OMAP4UART3
495                 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
496                 depends on ARCH_OMAP2PLUS
497                 select DEBUG_OMAP2PLUS_UART
498 
499         config DEBUG_OMAP3UART4
500                 bool "Kernel low-level debugging messages via OMAP36XX UART4"
501                 depends on ARCH_OMAP2PLUS
502                 select DEBUG_OMAP2PLUS_UART
503 
504         config DEBUG_OMAP4UART4
505                 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
506                 depends on ARCH_OMAP2PLUS
507                 select DEBUG_OMAP2PLUS_UART
508 
509         config DEBUG_TI81XXUART1
510                 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
511                 depends on ARCH_OMAP2PLUS
512                 select DEBUG_OMAP2PLUS_UART
513 
514         config DEBUG_TI81XXUART2
515                 bool "Kernel low-level debugging messages via TI81XX UART2"
516                 depends on ARCH_OMAP2PLUS
517                 select DEBUG_OMAP2PLUS_UART
518 
519         config DEBUG_TI81XXUART3
520                 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
521                 depends on ARCH_OMAP2PLUS
522                 select DEBUG_OMAP2PLUS_UART
523 
524         config DEBUG_AM33XXUART1
525                 bool "Kernel low-level debugging messages via AM33XX UART1"
526                 depends on ARCH_OMAP2PLUS
527                 select DEBUG_OMAP2PLUS_UART
528 
529         config DEBUG_ZOOM_UART
530                 bool "Kernel low-level debugging messages via Zoom2/3 UART"
531                 depends on ARCH_OMAP2PLUS
532                 select DEBUG_OMAP2PLUS_UART
533 
534         config DEBUG_PICOXCELL_UART
535                 depends on ARCH_PICOXCELL
536                 bool "Use PicoXcell UART 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 PicoXcell based platforms.
541 
542         config DEBUG_PXA_UART1
543                 depends on ARCH_PXA
544                 bool "Use PXA UART1 for low-level debug"
545                 select DEBUG_UART_8250
546                 help
547                   Say Y here if you want kernel low-level debugging support
548                   on PXA UART1.
549 
550         config DEBUG_REALVIEW_STD_PORT
551                 bool "RealView Default UART"
552                 depends on ARCH_REALVIEW
553                 select DEBUG_UART_PL01X
554                 help
555                   Say Y here if you want the debug print routines to direct
556                   their output to the serial port on RealView EB, PB11MP, PBA8
557                   and PBX platforms.
558 
559         config DEBUG_REALVIEW_PB1176_PORT
560                 bool "RealView PB1176 UART"
561                 depends on MACH_REALVIEW_PB1176
562                 select DEBUG_UART_PL01X
563                 help
564                   Say Y here if you want the debug print routines to direct
565                   their output to the standard serial port on the RealView
566                   PB1176 platform.
567 
568         config DEBUG_RK29_UART0
569                 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
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.
575 
576         config DEBUG_RK29_UART1
577                 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
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.
583 
584         config DEBUG_RK29_UART2
585                 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
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.
591 
592         config DEBUG_RK3X_UART0
593                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
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.
599 
600         config DEBUG_RK3X_UART1
601                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
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.
607 
608         config DEBUG_RK3X_UART2
609                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
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.
615 
616         config DEBUG_RK3X_UART3
617                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
618                 depends on ARCH_ROCKCHIP
619                 select DEBUG_UART_8250
620                 help
621                   Say Y here if you want kernel low-level debugging support
622                   on Rockchip based platforms.
623 
624         config DEBUG_RK32_UART2
625                 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
626                 depends on ARCH_ROCKCHIP
627                 select DEBUG_UART_8250
628                 help
629                   Say Y here if you want kernel low-level debugging support
630                   on Rockchip RK32xx based platforms.
631 
632         config DEBUG_S3C_UART0
633                 depends on PLAT_SAMSUNG
634                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
635                 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
636                 select DEBUG_S5PV210_UART if ARCH_S5PV210
637                 bool "Use Samsung S3C UART 0 for low-level debug"
638                 help
639                   Say Y here if you want the debug print routines to direct
640                   their output to UART 0. The port must have been initialised
641                   by the boot-loader before use.
642 
643         config DEBUG_S3C_UART1
644                 depends on PLAT_SAMSUNG
645                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
646                 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
647                 select DEBUG_S5PV210_UART if ARCH_S5PV210
648                 bool "Use Samsung S3C UART 1 for low-level debug"
649                 help
650                   Say Y here if you want the debug print routines to direct
651                   their output to UART 1. The port must have been initialised
652                   by the boot-loader before use.
653 
654         config DEBUG_S3C_UART2
655                 depends on PLAT_SAMSUNG
656                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
657                 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
658                 select DEBUG_S5PV210_UART if ARCH_S5PV210
659                 bool "Use Samsung S3C UART 2 for low-level debug"
660                 help
661                   Say Y here if you want the debug print routines to direct
662                   their output to UART 2. The port must have been initialised
663                   by the boot-loader before use.
664 
665         config DEBUG_S3C_UART3
666                 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
667                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
668                 select DEBUG_S5PV210_UART if ARCH_S5PV210
669                 bool "Use Samsung S3C UART 3 for low-level debug"
670                 help
671                   Say Y here if you want the debug print routines to direct
672                   their output to UART 3. The port must have been initialised
673                   by the boot-loader before use.
674 
675         config DEBUG_S3C2410_UART0
676                 depends on ARCH_S3C24XX
677                 select DEBUG_S3C2410_UART
678                 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
679                 help
680                   Say Y here if you want the debug print routines to direct
681                   their output to UART 0. The port must have been initialised
682                   by the boot-loader before use.
683 
684         config DEBUG_S3C2410_UART1
685                 depends on ARCH_S3C24XX
686                 select DEBUG_S3C2410_UART
687                 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
688                 help
689                   Say Y here if you want the debug print routines to direct
690                   their output to UART 1. The port must have been initialised
691                   by the boot-loader before use.
692 
693         config DEBUG_S3C2410_UART2
694                 depends on ARCH_S3C24XX
695                 select DEBUG_S3C2410_UART
696                 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
697                 help
698                   Say Y here if you want the debug print routines to direct
699                   their output to UART 2. The port must have been initialised
700                   by the boot-loader before use.
701 
702         config DEBUG_SOCFPGA_UART
703                 depends on ARCH_SOCFPGA
704                 bool "Use SOCFPGA UART for low-level debug"
705                 select DEBUG_UART_8250
706                 help
707                   Say Y here if you want kernel low-level debugging support
708                   on SOCFPGA based platforms.
709 
710         config DEBUG_SUNXI_UART0
711                 bool "Kernel low-level debugging messages via sunXi UART0"
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 UART0.
717 
718         config DEBUG_SUNXI_UART1
719                 bool "Kernel low-level debugging messages via sunXi UART1"
720                 depends on ARCH_SUNXI
721                 select DEBUG_UART_8250
722                 help
723                   Say Y here if you want kernel low-level debugging support
724                   on Allwinner A1X based platforms on the UART1.
725 
726         config DEBUG_SUNXI_R_UART
727                 bool "Kernel low-level debugging messages via sunXi R_UART"
728                 depends on MACH_SUN6I || MACH_SUN8I
729                 select DEBUG_UART_8250
730                 help
731                   Say Y here if you want kernel low-level debugging support
732                   on Allwinner A31/A23 based platforms on the R_UART.
733 
734         config TEGRA_DEBUG_UART_AUTO_ODMDATA
735                 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
736                 depends on ARCH_TEGRA
737                 select DEBUG_TEGRA_UART
738                 help
739                   Automatically determines which UART to use for low-level
740                   debug based on the ODMDATA value. This value is part of
741                   the BCT, and is written to the boot memory device using
742                   nvflash, or other flashing tool.  When bits 19:18 are 3,
743                   then bits 17:15 indicate which UART to use; 0/1/2/3/4
744                   are UART A/B/C/D/E.
745 
746         config TEGRA_DEBUG_UARTA
747                 bool "Kernel low-level debugging messages via Tegra UART A"
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.
753 
754         config TEGRA_DEBUG_UARTB
755                 bool "Kernel low-level debugging messages via Tegra UART B"
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.
761 
762         config TEGRA_DEBUG_UARTC
763                 bool "Kernel low-level debugging messages via Tegra UART C"
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.
769 
770         config TEGRA_DEBUG_UARTD
771                 bool "Kernel low-level debugging messages via Tegra UART D"
772                 depends on ARCH_TEGRA
773                 select DEBUG_TEGRA_UART
774                 help
775                   Say Y here if you want kernel low-level debugging support
776                   on Tegra based platforms.
777 
778         config TEGRA_DEBUG_UARTE
779                 bool "Kernel low-level debugging messages via Tegra UART E"
780                 depends on ARCH_TEGRA
781                 select DEBUG_TEGRA_UART
782                 help
783                   Say Y here if you want kernel low-level debugging support
784                   on Tegra based platforms.
785 
786         config DEBUG_SIRFPRIMA2_UART1
787                 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
788                 depends on ARCH_PRIMA2
789                 help
790                   Say Y here if you want the debug print routines to direct
791                   their output to the uart1 port on SiRFprimaII devices.
792 
793         config DEBUG_SIRFMARCO_UART1
794                 bool "Kernel low-level debugging messages via SiRFmarco UART1"
795                 depends on ARCH_MARCO
796                 help
797                   Say Y here if you want the debug print routines to direct
798                   their output to the uart1 port on SiRFmarco devices.
799 
800         config STIH41X_DEBUG_ASC2
801                 bool "Use StiH415/416 ASC2 UART for low-level debug"
802                 depends on ARCH_STI
803                 select DEBUG_STI_UART
804                 help
805                   Say Y here if you want kernel low-level debugging support
806                   on STiH415/416 based platforms like b2000, which has
807                   default UART wired up to ASC2.
808 
809                   If unsure, say N.
810 
811         config STIH41X_DEBUG_SBC_ASC1
812                 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
813                 depends on ARCH_STI
814                 select DEBUG_STI_UART
815                 help
816                   Say Y here if you want kernel low-level debugging support
817                   on STiH415/416 based platforms like b2020. which has
818                   default UART wired up to SBC ASC1.
819 
820                   If unsure, say N.
821 
822         config DEBUG_U300_UART
823                 bool "Kernel low-level debugging messages via U300 UART0"
824                 depends on ARCH_U300
825                 select DEBUG_UART_PL01X
826                 help
827                   Say Y here if you want the debug print routines to direct
828                   their output to the uart port on U300 devices.
829 
830         config DEBUG_UX500_UART
831                 depends on ARCH_U8500
832                 bool "Use Ux500 UART for low-level debug"
833                 help
834                   Say Y here if you want kernel low-level debugging support
835                   on Ux500 based platforms.
836 
837         config DEBUG_VEXPRESS_UART0_DETECT
838                 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
839                 depends on ARCH_VEXPRESS && CPU_CP15_MMU
840                 help
841                   This option enables a simple heuristic which tries to determine
842                   the motherboard's memory map variant (original or RS1) and then
843                   choose the relevant UART0 base address.
844 
845                   Note that this will only work with standard A-class core tiles,
846                   and may fail with non-standard SMM or custom software models.
847 
848         config DEBUG_VEXPRESS_UART0_CA9
849                 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
850                 depends on ARCH_VEXPRESS
851                 select DEBUG_UART_PL01X
852                 help
853                   This option selects UART0 at 0x10009000. Except for custom models,
854                   this applies only to the V2P-CA9 tile.
855 
856         config DEBUG_VEXPRESS_UART0_RS1
857                 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
858                 depends on ARCH_VEXPRESS
859                 select DEBUG_UART_PL01X
860                 help
861                   This option selects UART0 at 0x1c090000. This applies to most
862                   of the tiles using the RS1 memory map, including all new A-class
863                   core tiles, FPGA-based SMMs and software models.
864 
865         config DEBUG_VEXPRESS_UART0_CRX
866                 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
867                 depends on ARCH_VEXPRESS && !MMU
868                 select DEBUG_UART_PL01X
869                 help
870                   This option selects UART0 at 0xb0090000. This is appropriate for
871                   Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
872 
873         config DEBUG_VT8500_UART0
874                 bool "Use UART0 on VIA/Wondermedia SoCs"
875                 depends on ARCH_VT8500
876                 help
877                   This option selects UART0 on VIA/Wondermedia System-on-a-chip
878                   devices, including VT8500, WM8505, WM8650 and WM8850.
879 
880         config DEBUG_LL_UART_NONE
881                 bool "No low-level debugging UART"
882                 depends on !ARCH_MULTIPLATFORM
883                 help
884                   Say Y here if your platform doesn't provide a UART option
885                   above. This relies on your platform choosing the right UART
886                   definition internally in order for low-level debugging to
887                   work.
888 
889         config DEBUG_ICEDCC
890                 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
891                 help
892                   Say Y here if you want the debug print routines to direct
893                   their output to the EmbeddedICE macrocell's DCC channel using
894                   co-processor 14. This is known to work on the ARM9 style ICE
895                   channel and on the XScale with the PEEDI.
896 
897                   Note that the system will appear to hang during boot if there
898                   is nothing connected to read from the DCC.
899 
900         config DEBUG_SEMIHOSTING
901                 bool "Kernel low-level debug output via semihosting I/O"
902                 help
903                   Semihosting enables code running on an ARM target to use
904                   the I/O facilities on a host debugger/emulator through a
905                   simple SVC call. The host debugger or emulator must have
906                   semihosting enabled for the special svc call to be trapped
907                   otherwise the kernel will crash.
908 
909                   This is known to work with OpenOCD, as well as
910                   ARM's Fast Models, or any other controlling environment
911                   that implements semihosting.
912 
913                   For more details about semihosting, please see
914                   chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
915 
916         config DEBUG_LL_UART_8250
917                 bool "Kernel low-level debugging via 8250 UART"
918                 help
919                   Say Y here if you wish the debug print routes to direct
920                   their output to an 8250 UART.  You can use this option
921                   to provide the parameters for the 8250 UART rather than
922                   selecting one of the platform specific options above if
923                   you know the parameters for the port.
924 
925                   This option is preferred over the platform specific
926                   options; the platform specific options are deprecated
927                   and will be soon removed.
928 
929         config DEBUG_LL_UART_EFM32
930                 bool "Kernel low-level debugging via efm32 UART"
931                 depends on ARCH_EFM32
932                 help
933                   Say Y here if you want the debug print routines to direct
934                   their output to an UART or USART port on efm32 based
935                   machines. Use the following addresses for DEBUG_UART_PHYS:
936 
937                     0x4000c000 | USART0
938                     0x4000c400 | USART1
939                     0x4000c800 | USART2
940                     0x4000e000 | UART0
941                     0x4000e400 | UART1
942 
943         config DEBUG_LL_UART_PL01X
944                 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
945                 help
946                   Say Y here if you wish the debug print routes to direct
947                   their output to a PL01x Primecell UART.  You can use
948                   this option to provide the parameters for the UART
949                   rather than selecting one of the platform specific
950                   options above if you know the parameters for the port.
951 
952                   This option is preferred over the platform specific
953                   options; the platform specific options are deprecated
954                   and will be soon removed.
955 
956 endchoice
957 
958 config DEBUG_EXYNOS_UART
959         bool
960 
961 config DEBUG_S3C2410_UART
962         bool
963         select DEBUG_S3C24XX_UART
964 
965 config DEBUG_S3C24XX_UART
966         bool
967 
968 config DEBUG_S5PV210_UART
969         bool
970 
971 config DEBUG_OMAP2PLUS_UART
972         bool
973         depends on ARCH_OMAP2PLUS
974 
975 config DEBUG_IMX_UART_PORT
976         int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
977                                                 DEBUG_IMX25_UART || \
978                                                 DEBUG_IMX21_IMX27_UART || \
979                                                 DEBUG_IMX31_UART || \
980                                                 DEBUG_IMX35_UART || \
981                                                 DEBUG_IMX50_UART || \
982                                                 DEBUG_IMX51_UART || \
983                                                 DEBUG_IMX53_UART || \
984                                                 DEBUG_IMX6Q_UART || \
985                                                 DEBUG_IMX6SL_UART || \
986                                                 DEBUG_IMX6SX_UART
987         default 1
988         depends on ARCH_MXC
989         help
990           Choose UART port on which kernel low-level debug messages
991           should be output.
992 
993 config DEBUG_VF_UART_PORT
994         int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
995         default 1
996         range 0 3
997         depends on SOC_VF610
998         help
999           Choose UART port on which kernel low-level debug messages
1000           should be output.
1001 
1002 config DEBUG_TEGRA_UART
1003         bool
1004         depends on ARCH_TEGRA
1005 
1006 config DEBUG_STI_UART
1007         bool
1008         depends on ARCH_STI
1009 
1010 config DEBUG_LL_INCLUDE
1011         string
1012         default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1013         default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1014         default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1015         default "debug/exynos.S" if DEBUG_EXYNOS_UART
1016         default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1017         default "debug/icedcc.S" if DEBUG_ICEDCC
1018         default "debug/imx.S" if DEBUG_IMX1_UART || \
1019                                  DEBUG_IMX25_UART || \
1020                                  DEBUG_IMX21_IMX27_UART || \
1021                                  DEBUG_IMX31_UART || \
1022                                  DEBUG_IMX35_UART || \
1023                                  DEBUG_IMX50_UART || \
1024                                  DEBUG_IMX51_UART || \
1025                                  DEBUG_IMX53_UART ||\
1026                                  DEBUG_IMX6Q_UART || \
1027                                  DEBUG_IMX6SL_UART || \
1028                                  DEBUG_IMX6SX_UART
1029         default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM
1030         default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1031         default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1032         default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1033         default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
1034         default "debug/sti.S" if DEBUG_STI_UART
1035         default "debug/tegra.S" if DEBUG_TEGRA_UART
1036         default "debug/ux500.S" if DEBUG_UX500_UART
1037         default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1038         default "debug/vf.S" if DEBUG_VF_UART
1039         default "debug/vt8500.S" if DEBUG_VT8500_UART0
1040         default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1041         default "mach/debug-macro.S"
1042 
1043 # Compatibility options for PL01x
1044 config DEBUG_UART_PL01X
1045         def_bool ARCH_EP93XX || \
1046                 ARCH_INTEGRATOR || \
1047                 ARCH_SPEAR3XX || \
1048                 ARCH_SPEAR6XX || \
1049                 ARCH_SPEAR13XX || \
1050                 ARCH_VERSATILE
1051 
1052 # Compatibility options for 8250
1053 config DEBUG_UART_8250
1054         def_bool ARCH_DOVE || ARCH_EBSA110 || \
1055                 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1056                 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1057                 ARCH_IOP33X || ARCH_IXP4XX || \
1058                 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1059 
1060 config DEBUG_UART_PHYS
1061         hex "Physical base address of debug UART"
1062         default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1063         default 0x01c28000 if DEBUG_SUNXI_UART0
1064         default 0x01c28400 if DEBUG_SUNXI_UART1
1065         default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1066         default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1067         default 0x01f02800 if DEBUG_SUNXI_R_UART
1068         default 0x02530c00 if DEBUG_KEYSTONE_UART0
1069         default 0x02531000 if DEBUG_KEYSTONE_UART1
1070         default 0x03010fe0 if ARCH_RPC
1071         default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \
1072                                 DEBUG_VEXPRESS_UART0_CA9
1073         default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1074         default 0x10124000 if DEBUG_RK3X_UART0
1075         default 0x10126000 if DEBUG_RK3X_UART1
1076         default 0x101f1000 if ARCH_VERSATILE
1077         default 0x101fb000 if DEBUG_NOMADIK_UART
1078         default 0x16000000 if ARCH_INTEGRATOR
1079         default 0x18000300 if DEBUG_BCM_5301X
1080         default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1081         default 0x20060000 if DEBUG_RK29_UART0
1082         default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1083         default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1084         default 0x20201000 if DEBUG_BCM2835
1085         default 0x3e000000 if DEBUG_BCM_KONA_UART
1086         default 0x4000e400 if DEBUG_LL_UART_EFM32
1087         default 0x40090000 if ARCH_LPC32XX
1088         default 0x40100000 if DEBUG_PXA_UART1
1089         default 0x42000000 if ARCH_GEMINI
1090         default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1091                                 DEBUG_S3C2410_UART0)
1092         default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1093                                 DEBUG_S3C2410_UART1)
1094         default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1095                                 DEBUG_S3C2410_UART2)
1096         default 0x7c0003f8 if FOOTBRIDGE
1097         default 0x80070000 if DEBUG_IMX23_UART
1098         default 0x80074000 if DEBUG_IMX28_UART
1099         default 0x80230000 if DEBUG_PICOXCELL_UART
1100         default 0x808c0000 if ARCH_EP93XX
1101         default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1102         default 0xa9a00000 if DEBUG_MSM_UART
1103         default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1104         default 0xc0013000 if DEBUG_U300_UART
1105         default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1106         default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1107         default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1108         default 0xd0012000 if DEBUG_MVEBU_UART
1109         default 0xd4017000 if DEBUG_MMP_UART2
1110         default 0xd4018000 if DEBUG_MMP_UART3
1111         default 0xe0000000 if ARCH_SPEAR13XX
1112         default 0xf0000be0 if ARCH_EBSA110
1113         default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE
1114         default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
1115                                 ARCH_ORION5X
1116         default 0xf7fc9000 if DEBUG_BERLIN_UART
1117         default 0xf8b00000 if DEBUG_HIX5HD2_UART
1118         default 0xf991e000 if DEBUG_QCOM_UARTDM
1119         default 0xfcb00000 if DEBUG_HI3620_UART
1120         default 0xfe800000 if ARCH_IOP32X
1121         default 0xff690000 if DEBUG_RK32_UART2
1122         default 0xffc02000 if DEBUG_SOCFPGA_UART
1123         default 0xffd82340 if ARCH_IOP13XX
1124         default 0xfff36000 if DEBUG_HIGHBANK_UART
1125         default 0xfffff700 if ARCH_IOP33X
1126         depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1127                 DEBUG_LL_UART_EFM32 || \
1128                 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1129                 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1130 
1131 config DEBUG_UART_VIRT
1132         hex "Virtual base address of debug UART"
1133         default 0xe0010fe0 if ARCH_RPC
1134         default 0xe1000000 if DEBUG_MSM_UART
1135         default 0xf0000be0 if ARCH_EBSA110
1136         default 0xf0009000 if DEBUG_CNS3XXX
1137         default 0xf01fb000 if DEBUG_NOMADIK_UART
1138         default 0xf0201000 if DEBUG_BCM2835
1139         default 0xf1000300 if DEBUG_BCM_5301X
1140         default 0xf11f1000 if ARCH_VERSATILE
1141         default 0xf1600000 if ARCH_INTEGRATOR
1142         default 0xf1c28000 if DEBUG_SUNXI_UART0
1143         default 0xf1c28400 if DEBUG_SUNXI_UART1
1144         default 0xf1f02800 if DEBUG_SUNXI_R_UART
1145         default 0xf2100000 if DEBUG_PXA_UART1
1146         default 0xf4090000 if ARCH_LPC32XX
1147         default 0xf4200000 if ARCH_GEMINI
1148         default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1149                                 DEBUG_S3C2410_UART0)
1150         default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1151                                 DEBUG_S3C2410_UART1)
1152         default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1153                                 DEBUG_S3C2410_UART2)
1154         default 0xf7fc9000 if DEBUG_BERLIN_UART
1155         default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1156         default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1157         default 0xfa71e000 if DEBUG_QCOM_UARTDM
1158         default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1159         default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1160         default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1161         default 0xfd000000 if ARCH_SPEAR13XX
1162         default 0xfd012000 if ARCH_MV78XX0
1163         default 0xfde12000 if ARCH_DOVE
1164         default 0xfe012000 if ARCH_ORION5X
1165         default 0xfe017000 if DEBUG_MMP_UART2
1166         default 0xfe018000 if DEBUG_MMP_UART3
1167         default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1168         default 0xfe230000 if DEBUG_PICOXCELL_UART
1169         default 0xfe300000 if DEBUG_BCM_KONA_UART
1170         default 0xfe800000 if ARCH_IOP32X
1171         default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1172         default 0xfeb24000 if DEBUG_RK3X_UART0
1173         default 0xfeb26000 if DEBUG_RK3X_UART1
1174         default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1175         default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1176         default 0xfec02000 if DEBUG_SOCFPGA_UART
1177         default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
1178         default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1179         default 0xfec90000 if DEBUG_RK32_UART2
1180         default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1181         default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1182         default 0xfed60000 if DEBUG_RK29_UART0
1183         default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1184         default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1185         default 0xfedc0000 if ARCH_EP93XX
1186         default 0xfee003f8 if FOOTBRIDGE
1187         default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1188         default 0xfee82340 if ARCH_IOP13XX
1189         default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1190         default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1191         default 0xfef36000 if DEBUG_HIGHBANK_UART
1192         default 0xfefff700 if ARCH_IOP33X
1193         default 0xff003000 if DEBUG_U300_UART
1194         default DEBUG_UART_PHYS if !MMU
1195         depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1196                 DEBUG_UART_8250 || DEBUG_UART_PL01X || \
1197                 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART
1198 
1199 config DEBUG_UART_8250_SHIFT
1200         int "Register offset shift for the 8250 debug UART"
1201         depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1202         default 0 if FOOTBRIDGE || ARCH_IOP32X
1203         default 2
1204 
1205 config DEBUG_UART_8250_WORD
1206         bool "Use 32-bit accesses for 8250 UART"
1207         depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1208         depends on DEBUG_UART_8250_SHIFT >= 2
1209         default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1210                 ARCH_KEYSTONE || \
1211                 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1212                 DEBUG_DAVINCI_DA8XX_UART2 || \
1213                 DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2
1214 
1215 config DEBUG_UART_8250_FLOW_CONTROL
1216         bool "Enable flow control for 8250 UART"
1217         depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1218         default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1219 
1220 config DEBUG_UNCOMPRESS
1221         bool
1222         depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG
1223         default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1224                      (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1225         help
1226           This option influences the normal decompressor output for
1227           multiplatform kernels.  Normally, multiplatform kernels disable
1228           decompressor output because it is not possible to know where to
1229           send the decompressor output.
1230 
1231           When this option is set, the selected DEBUG_LL output method
1232           will be re-used for normal decompressor output on multiplatform
1233           kernels.
1234           
1235 
1236 config UNCOMPRESS_INCLUDE
1237         string
1238         default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1239                                         PLAT_SAMSUNG || ARCH_EFM32
1240         default "mach/uncompress.h"
1241 
1242 config EARLY_PRINTK
1243         bool "Early printk"
1244         depends on DEBUG_LL
1245         help
1246           Say Y here if you want to have an early console using the
1247           kernel low-level debugging functions. Add earlyprintk to your
1248           kernel parameters to enable this console.
1249 
1250 config OC_ETM
1251         bool "On-chip ETM and ETB"
1252         depends on ARM_AMBA
1253         help
1254           Enables the on-chip embedded trace macrocell and embedded trace
1255           buffer driver that will allow you to collect traces of the
1256           kernel code.
1257 
1258 config ARM_KPROBES_TEST
1259         tristate "Kprobes test module"
1260         depends on KPROBES && MODULES
1261         help
1262           Perform tests of kprobes API and instruction set simulation.
1263 
1264 config PID_IN_CONTEXTIDR
1265         bool "Write the current PID to the CONTEXTIDR register"
1266         depends on CPU_COPY_V6
1267         help
1268           Enabling this option causes the kernel to write the current PID to
1269           the PROCID field of the CONTEXTIDR register, at the expense of some
1270           additional instructions during context switch. Say Y here only if you
1271           are planning to use hardware trace tools with this kernel.
1272 
1273 config DEBUG_SET_MODULE_RONX
1274         bool "Set loadable kernel module data as NX and text as RO"
1275         depends on MODULES
1276         ---help---
1277           This option helps catch unintended modifications to loadable
1278           kernel module's text and read-only data. It also prevents execution
1279           of module data. Such protection may interfere with run-time code
1280           patching and dynamic kernel tracing - and they might also protect
1281           against certain classes of kernel exploits.
1282           If in doubt, say "N".
1283 
1284 endmenu

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