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1menu "Kernel hacking"
2
3source "lib/Kconfig.debug"
4
5config STRICT_DEVMEM
6 bool "Filter access to /dev/mem"
7 depends on MMU
8 ---help---
9 If this option is disabled, you allow userspace (root) access to all
10 of memory, including kernel and userspace memory. Accidental
11 access to this is obviously disastrous, but specific access can
12 be used by people debugging the kernel.
13
14 If this option is switched on, the /dev/mem file only allows
15 userspace access to memory mapped peripherals.
16
17 If in doubt, say Y.
18
19# RMK wants arm kernels compiled with frame pointers or stack unwinding.
20# If you know what you are doing and are willing to live without stack
21# traces, you can get a slightly smaller kernel by setting this option to
22# n, but then RMK will have to kill you ;).
23config FRAME_POINTER
24 bool
25 depends on !THUMB2_KERNEL
26 default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
27 help
28 If you say N here, the resulting kernel will be slightly smaller and
29 faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
30 when a problem occurs with the kernel, the information that is
31 reported is severely limited.
32
33config ARM_UNWIND
34 bool "Enable stack unwinding support (EXPERIMENTAL)"
35 depends on AEABI && EXPERIMENTAL
36 default y
37 help
38 This option enables stack unwinding support in the kernel
39 using the information automatically generated by the
40 compiler. The resulting kernel image is slightly bigger but
41 the performance is not affected. Currently, this feature
42 only works with EABI compilers. If unsure say Y.
43
44config OLD_MCOUNT
45 bool
46 depends on FUNCTION_TRACER && FRAME_POINTER
47 default y
48
49config DEBUG_USER
50 bool "Verbose user fault messages"
51 help
52 When a user program crashes due to an exception, the kernel can
53 print a brief message explaining what the problem was. This is
54 sometimes helpful for debugging but serves no purpose on a
55 production system. Most people should say N here.
56
57 In addition, you need to pass user_debug=N on the kernel command
58 line to enable this feature. N consists of the sum of:
59
60 1 - undefined instruction events
61 2 - system calls
62 4 - invalid data aborts
63 8 - SIGSEGV faults
64 16 - SIGBUS faults
65
66# These options are only for real kernel hackers who want to get their hands dirty.
67config DEBUG_LL
68 bool "Kernel low-level debugging functions"
69 depends on DEBUG_KERNEL
70 help
71 Say Y here to include definitions of printascii, printch, printhex
72 in the kernel. This is helpful if you are debugging code that
73 executes before the console is initialized.
74
75config EARLY_PRINTK
76 bool "Early printk"
77 depends on DEBUG_LL
78 help
79 Say Y here if you want to have an early console using the
80 kernel low-level debugging functions. Add earlyprintk to your
81 kernel parameters to enable this console.
82
83config DEBUG_ICEDCC
84 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
85 depends on DEBUG_LL
86 help
87 Say Y here if you want the debug print routines to direct their
88 output to the EmbeddedICE macrocell's DCC channel using
89 co-processor 14. This is known to work on the ARM9 style ICE
90 channel and on the XScale with the PEEDI.
91
92 It does include a timeout to ensure that the system does not
93 totally freeze when there is nothing connected to read.
94
95config OC_ETM
96 bool "On-chip ETM and ETB"
97 select ARM_AMBA
98 help
99 Enables the on-chip embedded trace macrocell and embedded trace
100 buffer driver that will allow you to collect traces of the
101 kernel code.
102
103config DEBUG_DC21285_PORT
104 bool "Kernel low-level debugging messages via footbridge serial port"
105 depends on DEBUG_LL && FOOTBRIDGE
106 help
107 Say Y here if you want the debug print routines to direct their
108 output to the serial port in the DC21285 (Footbridge). Saying N
109 will cause the debug messages to appear on the first 16550
110 serial port.
111
112config DEBUG_CLPS711X_UART2
113 bool "Kernel low-level debugging messages via UART2"
114 depends on DEBUG_LL && ARCH_CLPS711X
115 help
116 Say Y here if you want the debug print routines to direct their
117 output to the second serial port on these devices. Saying N will
118 cause the debug messages to appear on the first serial port.
119
120config DEBUG_S3C_UART
121 depends on PLAT_SAMSUNG
122 int "S3C UART to use for low-level debug"
123 default "0"
124 help
125 Choice for UART for kernel low-level using S3C UARTS,
126 should be between zero and two. The port must have been
127 initialised by the boot-loader before use.
128
129 The uncompressor code port configuration is now handled
130 by CONFIG_S3C_LOWLEVEL_UART_PORT.
131
132endmenu
1menu "Kernel hacking"
2
3source "lib/Kconfig.debug"
4
5config ARM_PTDUMP
6 bool "Export kernel pagetable layout to userspace via debugfs"
7 depends on DEBUG_KERNEL
8 depends on MMU
9 select DEBUG_FS
10 ---help---
11 Say Y here if you want to show the kernel pagetable layout in a
12 debugfs file. This information is only useful for kernel developers
13 who are working in architecture specific areas of the kernel.
14 It is probably not a good idea to enable this feature in a production
15 kernel.
16 If in doubt, say "N"
17
18# RMK wants arm kernels compiled with frame pointers or stack unwinding.
19# If you know what you are doing and are willing to live without stack
20# traces, you can get a slightly smaller kernel by setting this option to
21# n, but then RMK will have to kill you ;).
22config FRAME_POINTER
23 bool
24 depends on !THUMB2_KERNEL
25 default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
26 help
27 If you say N here, the resulting kernel will be slightly smaller and
28 faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
29 when a problem occurs with the kernel, the information that is
30 reported is severely limited.
31
32config ARM_UNWIND
33 bool "Enable stack unwinding support (EXPERIMENTAL)"
34 depends on AEABI
35 default y
36 help
37 This option enables stack unwinding support in the kernel
38 using the information automatically generated by the
39 compiler. The resulting kernel image is slightly bigger but
40 the performance is not affected. Currently, this feature
41 only works with EABI compilers. If unsure say Y.
42
43config OLD_MCOUNT
44 bool
45 depends on FUNCTION_TRACER && FRAME_POINTER
46 default y
47
48config DEBUG_USER
49 bool "Verbose user fault messages"
50 help
51 When a user program crashes due to an exception, the kernel can
52 print a brief message explaining what the problem was. This is
53 sometimes helpful for debugging but serves no purpose on a
54 production system. Most people should say N here.
55
56 In addition, you need to pass user_debug=N on the kernel command
57 line to enable this feature. N consists of the sum of:
58
59 1 - undefined instruction events
60 2 - system calls
61 4 - invalid data aborts
62 8 - SIGSEGV faults
63 16 - SIGBUS faults
64
65# These options are only for real kernel hackers who want to get their hands dirty.
66config DEBUG_LL
67 bool "Kernel low-level debugging functions (read help!)"
68 depends on DEBUG_KERNEL
69 help
70 Say Y here to include definitions of printascii, printch, printhex
71 in the kernel. This is helpful if you are debugging code that
72 executes before the console is initialized.
73
74 Note that selecting this option will limit the kernel to a single
75 UART definition, as specified below. Attempting to boot the kernel
76 image on a different platform *will not work*, so this option should
77 not be enabled for kernels that are intended to be portable.
78
79choice
80 prompt "Kernel low-level debugging port"
81 depends on DEBUG_LL
82
83 config DEBUG_ALPINE_UART0
84 bool "Kernel low-level debugging messages via Alpine UART0"
85 depends on ARCH_ALPINE
86 select DEBUG_UART_8250
87 help
88 Say Y here if you want kernel low-level debugging support
89 on Alpine based platforms.
90
91 config DEBUG_ASM9260_UART
92 bool "Kernel low-level debugging via asm9260 UART"
93 depends on MACH_ASM9260
94 help
95 Say Y here if you want the debug print routines to direct
96 their output to an UART or USART port on asm9260 based
97 machines.
98
99 DEBUG_UART_PHYS | DEBUG_UART_VIRT
100
101 0x80000000 | 0xf0000000 | UART0
102 0x80004000 | 0xf0004000 | UART1
103 0x80008000 | 0xf0008000 | UART2
104 0x8000c000 | 0xf000c000 | UART3
105 0x80010000 | 0xf0010000 | UART4
106 0x80014000 | 0xf0014000 | UART5
107 0x80018000 | 0xf0018000 | UART6
108 0x8001c000 | 0xf001c000 | UART7
109 0x80020000 | 0xf0020000 | UART8
110 0x80024000 | 0xf0024000 | UART9
111
112 config DEBUG_AT91_UART
113 bool "Kernel low-level debugging on Atmel SoCs"
114 depends on ARCH_AT91
115 help
116 Say Y here if you want the debug print routines to direct
117 their output to the serial port on atmel devices.
118
119 SOC DEBUG_UART_PHYS DEBUG_UART_VIRT PORT
120 rm9200, 9260/9g20, 0xfffff200 0xfefff200 DBGU
121 9261/9g10, 9rl
122 9263, 9g45, sama5d3 0xffffee00 0xfeffee00 DBGU
123 sama5d4 0xfc00c000 0xfb00c000 USART3
124 sama5d4 0xfc069000 0xfb069000 DBGU
125 sama5d2 0xf8020000 0xf7020000 UART1
126
127 Please adjust DEBUG_UART_PHYS configuration options based on
128 your needs.
129
130 config DEBUG_BCM2835
131 bool "Kernel low-level debugging on BCM2835 PL011 UART"
132 depends on ARCH_BCM2835 && ARCH_MULTI_V6
133 select DEBUG_UART_PL01X
134
135 config DEBUG_BCM2836
136 bool "Kernel low-level debugging on BCM2836 PL011 UART"
137 depends on ARCH_BCM2835 && ARCH_MULTI_V7
138 select DEBUG_UART_PL01X
139
140 config DEBUG_BCM_5301X
141 bool "Kernel low-level debugging on BCM5301X UART1"
142 depends on ARCH_BCM_5301X
143 select DEBUG_UART_8250
144
145 config DEBUG_BCM_KONA_UART
146 bool "Kernel low-level debugging messages via BCM KONA UART"
147 depends on ARCH_BCM_MOBILE
148 select DEBUG_UART_8250
149 help
150 Say Y here if you want kernel low-level debugging support
151 on Broadcom SoC platforms.
152 This low level debug works for Broadcom
153 mobile SoCs in the Kona family of chips (e.g. bcm28155,
154 bcm11351, etc...)
155
156 config DEBUG_BCM63XX_UART
157 bool "Kernel low-level debugging on BCM63XX UART"
158 depends on ARCH_BCM_63XX
159
160 config DEBUG_BERLIN_UART
161 bool "Marvell Berlin SoC Debug UART"
162 depends on ARCH_BERLIN
163 select DEBUG_UART_8250
164 help
165 Say Y here if you want kernel low-level debugging support
166 on Marvell Berlin SoC based platforms.
167
168 config DEBUG_BRCMSTB_UART
169 bool "Use BRCMSTB UART for low-level debug"
170 depends on ARCH_BRCMSTB
171 select DEBUG_UART_8250
172 help
173 Say Y here if you want the debug print routines to direct
174 their output to the first serial port on these devices.
175
176 If you have a Broadcom STB chip and would like early print
177 messages to appear over the UART, select this option.
178
179 config DEBUG_CLPS711X_UART1
180 bool "Kernel low-level debugging messages via UART1"
181 depends on ARCH_CLPS711X
182 help
183 Say Y here if you want the debug print routines to direct
184 their output to the first serial port on these devices.
185
186 config DEBUG_CLPS711X_UART2
187 bool "Kernel low-level debugging messages via UART2"
188 depends on ARCH_CLPS711X
189 help
190 Say Y here if you want the debug print routines to direct
191 their output to the second serial port on these devices.
192
193 config DEBUG_CNS3XXX
194 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
195 depends on ARCH_CNS3XXX
196 select DEBUG_UART_8250
197 help
198 Say Y here if you want the debug print routines to direct
199 their output to the CNS3xxx UART0.
200
201 config DEBUG_DAVINCI_DA8XX_UART1
202 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
203 depends on ARCH_DAVINCI_DA8XX
204 select DEBUG_UART_8250
205 help
206 Say Y here if you want the debug print routines to direct
207 their output to UART1 serial port on DaVinci DA8XX devices.
208
209 config DEBUG_DAVINCI_DA8XX_UART2
210 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
211 depends on ARCH_DAVINCI_DA8XX
212 select DEBUG_UART_8250
213 help
214 Say Y here if you want the debug print routines to direct
215 their output to UART2 serial port on DaVinci DA8XX devices.
216
217 config DEBUG_DAVINCI_DMx_UART0
218 bool "Kernel low-level debugging on DaVinci DMx using UART0"
219 depends on ARCH_DAVINCI_DMx
220 select DEBUG_UART_8250
221 help
222 Say Y here if you want the debug print routines to direct
223 their output to UART0 serial port on DaVinci DMx devices.
224
225 config DEBUG_DC21285_PORT
226 bool "Kernel low-level debugging messages via footbridge serial port"
227 depends on FOOTBRIDGE
228 help
229 Say Y here if you want the debug print routines to direct
230 their output to the serial port in the DC21285 (Footbridge).
231
232 config DEBUG_DIGICOLOR_UA0
233 bool "Kernel low-level debugging messages via Digicolor UA0"
234 depends on ARCH_DIGICOLOR
235 help
236 Say Y here if you want the debug print routines to direct
237 their output to the UA0 serial port in the CX92755.
238
239 config DEBUG_EP93XX
240 bool "Kernel low-level debugging messages via ep93xx UART"
241 depends on ARCH_EP93XX
242 select DEBUG_UART_PL01X
243 help
244 Say Y here if you want kernel low-level debugging support
245 on Cirrus Logic EP93xx based platforms.
246
247 config DEBUG_FOOTBRIDGE_COM1
248 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
249 depends on FOOTBRIDGE
250 select DEBUG_UART_8250
251 help
252 Say Y here if you want the debug print routines to direct
253 their output to the 8250 at PCI COM1.
254
255 config DEBUG_GEMINI
256 bool "Kernel low-level debugging messages via Cortina Systems Gemini UART"
257 depends on ARCH_GEMINI
258 select DEBUG_UART_8250
259 help
260 Say Y here if you want kernel low-level debugging support
261 on Cortina Gemini based platforms.
262
263 config DEBUG_HI3620_UART
264 bool "Hisilicon HI3620 Debug UART"
265 depends on ARCH_HI3xxx
266 select DEBUG_UART_PL01X
267 help
268 Say Y here if you want kernel low-level debugging support
269 on HI3620 UART.
270
271 config DEBUG_HI3716_UART
272 bool "Hisilicon Hi3716 Debug UART"
273 depends on ARCH_HI3xxx
274 select DEBUG_UART_PL01X
275 help
276 Say Y here if you want kernel low-level debugging support
277 on HI3716 UART.
278
279 config DEBUG_HIGHBANK_UART
280 bool "Kernel low-level debugging messages via Highbank UART"
281 depends on ARCH_HIGHBANK
282 select DEBUG_UART_PL01X
283 help
284 Say Y here if you want the debug print routines to direct
285 their output to the UART on Highbank based devices.
286
287 config DEBUG_HIP01_UART
288 bool "Hisilicon Hip01 Debug UART"
289 depends on ARCH_HIP01
290 select DEBUG_UART_8250
291 help
292 Say Y here if you want kernel low-level debugging support
293 on HIP01 UART.
294
295 config DEBUG_HIP04_UART
296 bool "Hisilicon HiP04 Debug UART"
297 depends on ARCH_HIP04
298 select DEBUG_UART_8250
299 help
300 Say Y here if you want kernel low-level debugging support
301 on HIP04 UART.
302
303 config DEBUG_HIX5HD2_UART
304 bool "Hisilicon Hix5hd2 Debug UART"
305 depends on ARCH_HIX5HD2
306 select DEBUG_UART_PL01X
307 help
308 Say Y here if you want kernel low-level debugging support
309 on Hix5hd2 UART.
310
311 config DEBUG_IMX1_UART
312 bool "i.MX1 Debug UART"
313 depends on SOC_IMX1
314 help
315 Say Y here if you want kernel low-level debugging support
316 on i.MX1.
317
318 config DEBUG_IMX23_UART
319 bool "i.MX23 Debug UART"
320 depends on SOC_IMX23
321 select DEBUG_UART_PL01X
322 help
323 Say Y here if you want kernel low-level debugging support
324 on i.MX23.
325
326 config DEBUG_IMX25_UART
327 bool "i.MX25 Debug UART"
328 depends on SOC_IMX25
329 help
330 Say Y here if you want kernel low-level debugging support
331 on i.MX25.
332
333 config DEBUG_IMX21_IMX27_UART
334 bool "i.MX21 and i.MX27 Debug UART"
335 depends on SOC_IMX21 || SOC_IMX27
336 help
337 Say Y here if you want kernel low-level debugging support
338 on i.MX21 or i.MX27.
339
340 config DEBUG_IMX28_UART
341 bool "i.MX28 Debug UART"
342 depends on SOC_IMX28
343 select DEBUG_UART_PL01X
344 help
345 Say Y here if you want kernel low-level debugging support
346 on i.MX28.
347
348 config DEBUG_IMX31_UART
349 bool "i.MX31 Debug UART"
350 depends on SOC_IMX31
351 help
352 Say Y here if you want kernel low-level debugging support
353 on i.MX31.
354
355 config DEBUG_IMX35_UART
356 bool "i.MX35 Debug UART"
357 depends on SOC_IMX35
358 help
359 Say Y here if you want kernel low-level debugging support
360 on i.MX35.
361
362 config DEBUG_IMX50_UART
363 bool "i.MX50 Debug UART"
364 depends on SOC_IMX50
365 help
366 Say Y here if you want kernel low-level debugging support
367 on i.MX50.
368
369 config DEBUG_IMX51_UART
370 bool "i.MX51 Debug UART"
371 depends on SOC_IMX51
372 help
373 Say Y here if you want kernel low-level debugging support
374 on i.MX51.
375
376 config DEBUG_IMX53_UART
377 bool "i.MX53 Debug UART"
378 depends on SOC_IMX53
379 help
380 Say Y here if you want kernel low-level debugging support
381 on i.MX53.
382
383 config DEBUG_IMX6Q_UART
384 bool "i.MX6Q/DL Debug UART"
385 depends on SOC_IMX6Q
386 help
387 Say Y here if you want kernel low-level debugging support
388 on i.MX6Q/DL.
389
390 config DEBUG_IMX6SL_UART
391 bool "i.MX6SL Debug UART"
392 depends on SOC_IMX6SL
393 help
394 Say Y here if you want kernel low-level debugging support
395 on i.MX6SL.
396
397 config DEBUG_IMX6SX_UART
398 bool "i.MX6SX Debug UART"
399 depends on SOC_IMX6SX
400 help
401 Say Y here if you want kernel low-level debugging support
402 on i.MX6SX.
403
404 config DEBUG_IMX6UL_UART
405 bool "i.MX6UL Debug UART"
406 depends on SOC_IMX6UL
407 help
408 Say Y here if you want kernel low-level debugging support
409 on i.MX6UL.
410
411 config DEBUG_IMX7D_UART
412 bool "i.MX7D Debug UART"
413 depends on SOC_IMX7D
414 help
415 Say Y here if you want kernel low-level debugging support
416 on i.MX7D.
417
418 config DEBUG_INTEGRATOR
419 bool "Kernel low-level debugging messages via ARM Integrator UART"
420 depends on ARCH_INTEGRATOR
421 select DEBUG_UART_PL01X
422 help
423 Say Y here if you want kernel low-level debugging support
424 on ARM Integrator platforms.
425
426 config DEBUG_KEYSTONE_UART0
427 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
428 depends on ARCH_KEYSTONE
429 select DEBUG_UART_8250
430 help
431 Say Y here if you want the debug print routines to direct
432 their output to UART0 serial port on KEYSTONE2 devices.
433
434 config DEBUG_KEYSTONE_UART1
435 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
436 depends on ARCH_KEYSTONE
437 select DEBUG_UART_8250
438 help
439 Say Y here if you want the debug print routines to direct
440 their output to UART1 serial port on KEYSTONE2 devices.
441
442 config DEBUG_KS8695_UART
443 bool "KS8695 Debug UART"
444 depends on ARCH_KS8695
445 help
446 Say Y here if you want kernel low-level debugging support
447 on KS8695.
448
449 config DEBUG_LPC18XX_UART0
450 bool "Kernel low-level debugging via LPC18xx/43xx UART0"
451 depends on ARCH_LPC18XX
452 select DEBUG_UART_8250
453 help
454 Say Y here if you want kernel low-level debugging support
455 on NXP LPC18xx/43xx UART0.
456
457 config DEBUG_LPC32XX
458 bool "Kernel low-level debugging messages via NXP LPC32xx UART"
459 depends on ARCH_LPC32XX
460 select DEBUG_UART_8250
461 help
462 Say Y here if you want kernel low-level debugging support
463 on NXP LPC32xx based platforms.
464
465 config DEBUG_MESON_UARTAO
466 bool "Kernel low-level debugging via Meson6 UARTAO"
467 depends on ARCH_MESON
468 help
469 Say Y here if you want kernel low-lever debugging support
470 on Amlogic Meson6 based platforms on the UARTAO.
471
472 config DEBUG_MMP_UART2
473 bool "Kernel low-level debugging message via MMP UART2"
474 depends on ARCH_MMP
475 select DEBUG_UART_8250
476 help
477 Say Y here if you want kernel low-level debugging support
478 on MMP UART2.
479
480 config DEBUG_MMP_UART3
481 bool "Kernel low-level debugging message via MMP UART3"
482 depends on ARCH_MMP
483 select DEBUG_UART_8250
484 help
485 Say Y here if you want kernel low-level debugging support
486 on MMP UART3.
487
488 config DEBUG_MVEBU_UART0
489 bool "Kernel low-level debugging messages via MVEBU UART0 (old bootloaders)"
490 depends on ARCH_MVEBU
491 depends on ARCH_MVEBU && CPU_V7
492 select DEBUG_UART_8250
493 help
494 Say Y here if you want kernel low-level debugging support
495 on MVEBU based platforms on UART0.
496
497 This option should be used with the old bootloaders
498 that left the internal registers mapped at
499 0xd0000000. As of today, this is the case on
500 platforms such as the Globalscale Mirabox or the
501 Plathome OpenBlocks AX3, when using the original
502 bootloader.
503
504 This option will not work on older Marvell platforms
505 (Kirkwood, Dove, MV78xx0, Orion5x), which should pick
506 the "new bootloader" variant.
507
508 If the wrong DEBUG_MVEBU_UART* option is selected,
509 when u-boot hands over to the kernel, the system
510 silently crashes, with no serial output at all.
511
512 config DEBUG_MVEBU_UART0_ALTERNATE
513 bool "Kernel low-level debugging messages via MVEBU UART0 (new bootloaders)"
514 depends on ARCH_MVEBU || ARCH_DOVE || ARCH_MV78XX0 || ARCH_ORION5X
515 select DEBUG_UART_8250
516 help
517 Say Y here if you want kernel low-level debugging support
518 on MVEBU based platforms on UART0. (Armada XP, Armada 3xx,
519 Kirkwood, Dove, MV78xx0, Orion5x).
520
521
522 This option should be used with the new bootloaders
523 that remap the internal registers at 0xf1000000.
524
525 If the wrong DEBUG_MVEBU_UART* option is selected,
526 when u-boot hands over to the kernel, the system
527 silently crashes, with no serial output at all.
528
529 config DEBUG_MVEBU_UART1_ALTERNATE
530 bool "Kernel low-level debugging messages via MVEBU UART1 (new bootloaders)"
531 depends on ARCH_MVEBU
532 select DEBUG_UART_8250
533 help
534 Say Y here if you want kernel low-level debugging support
535 on MVEBU based platforms on UART1. (Armada XP, Armada 3xx,
536 Kirkwood, Dove, MV78xx0, Orion5x).
537
538 This option should be used with the new bootloaders
539 that remap the internal registers at 0xf1000000.
540 All of the older (pre Armada XP/370) platforms also use
541 this address, regardless of the boot loader version.
542
543 If the wrong DEBUG_MVEBU_UART* option is selected,
544 when u-boot hands over to the kernel, the system
545 silently crashes, with no serial output at all.
546
547 config DEBUG_MT6589_UART0
548 bool "Mediatek mt6589 UART0"
549 depends on ARCH_MEDIATEK
550 select DEBUG_UART_8250
551 help
552 Say Y here if you want kernel low-level debugging support
553 for Mediatek mt6589 based platforms on UART0.
554
555 config DEBUG_MT8127_UART0
556 bool "Mediatek mt8127/mt6592 UART0"
557 depends on ARCH_MEDIATEK
558 select DEBUG_UART_8250
559 help
560 Say Y here if you want kernel low-level debugging support
561 for Mediatek mt8127 based platforms on UART0.
562
563 config DEBUG_MT8135_UART3
564 bool "Mediatek mt8135 UART3"
565 depends on ARCH_MEDIATEK
566 select DEBUG_UART_8250
567 help
568 Say Y here if you want kernel low-level debugging support
569 for Mediatek mt8135 based platforms on UART3.
570
571 config DEBUG_NETX_UART
572 bool "Kernel low-level debugging messages via NetX UART"
573 depends on ARCH_NETX
574 help
575 Say Y here if you want kernel low-level debugging support
576 on Hilscher NetX based platforms.
577
578 config DEBUG_NOMADIK_UART
579 bool "Kernel low-level debugging messages via NOMADIK UART"
580 depends on ARCH_NOMADIK
581 select DEBUG_UART_PL01X
582 help
583 Say Y here if you want kernel low-level debugging support
584 on NOMADIK based platforms.
585
586 config DEBUG_NSPIRE_CLASSIC_UART
587 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
588 depends on ARCH_NSPIRE
589 select DEBUG_UART_8250
590 help
591 Say Y here if you want kernel low-level debugging support
592 on TI-NSPIRE classic models.
593
594 config DEBUG_NSPIRE_CX_UART
595 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
596 depends on ARCH_NSPIRE
597 select DEBUG_UART_PL01X
598 help
599 Say Y here if you want kernel low-level debugging support
600 on TI-NSPIRE CX models.
601
602 config DEBUG_OMAP1UART1
603 bool "Kernel low-level debugging via OMAP1 UART1"
604 depends on ARCH_OMAP1
605 select DEBUG_UART_8250
606 help
607 Say Y here if you want kernel low-level debugging support
608 on OMAP1 based platforms (except OMAP730) on the UART1.
609
610 config DEBUG_OMAP1UART2
611 bool "Kernel low-level debugging via OMAP1 UART2"
612 depends on ARCH_OMAP1
613 select DEBUG_UART_8250
614 help
615 Say Y here if you want kernel low-level debugging support
616 on OMAP1 based platforms (except OMAP730) on the UART2.
617
618 config DEBUG_OMAP1UART3
619 bool "Kernel low-level debugging via OMAP1 UART3"
620 depends on ARCH_OMAP1
621 select DEBUG_UART_8250
622 help
623 Say Y here if you want kernel low-level debugging support
624 on OMAP1 based platforms (except OMAP730) on the UART3.
625
626 config DEBUG_OMAP2UART1
627 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
628 depends on ARCH_OMAP2PLUS
629 select DEBUG_OMAP2PLUS_UART
630 help
631 This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
632 omap3 torpedo and 3530 lv som.
633
634 config DEBUG_OMAP2UART2
635 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
636 depends on ARCH_OMAP2PLUS
637 select DEBUG_OMAP2PLUS_UART
638
639 config DEBUG_OMAP2UART3
640 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
641 depends on ARCH_OMAP2PLUS
642 select DEBUG_OMAP2PLUS_UART
643
644 config DEBUG_OMAP3UART3
645 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
646 depends on ARCH_OMAP2PLUS
647 select DEBUG_OMAP2PLUS_UART
648 help
649 This covers at least cm_t3x, beagle, crane, devkit8000,
650 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
651 and 3517evm.
652
653 config DEBUG_OMAP4UART3
654 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
655 depends on ARCH_OMAP2PLUS
656 select DEBUG_OMAP2PLUS_UART
657
658 config DEBUG_OMAP3UART4
659 bool "Kernel low-level debugging messages via OMAP36XX UART4"
660 depends on ARCH_OMAP2PLUS
661 select DEBUG_OMAP2PLUS_UART
662
663 config DEBUG_OMAP4UART4
664 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
665 depends on ARCH_OMAP2PLUS
666 select DEBUG_OMAP2PLUS_UART
667
668 config DEBUG_OMAP7XXUART1
669 bool "Kernel low-level debugging via OMAP730 UART1"
670 depends on ARCH_OMAP730
671 select DEBUG_UART_8250
672 help
673 Say Y here if you want kernel low-level debugging support
674 on OMAP730 based platforms on the UART1.
675
676 config DEBUG_OMAP7XXUART2
677 bool "Kernel low-level debugging via OMAP730 UART2"
678 depends on ARCH_OMAP730
679 select DEBUG_UART_8250
680 help
681 Say Y here if you want kernel low-level debugging support
682 on OMAP730 based platforms on the UART2.
683
684 config DEBUG_OMAP7XXUART3
685 bool "Kernel low-level debugging via OMAP730 UART3"
686 depends on ARCH_OMAP730
687 select DEBUG_UART_8250
688 help
689 Say Y here if you want kernel low-level debugging support
690 on OMAP730 based platforms on the UART3.
691
692 config DEBUG_TI81XXUART1
693 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
694 depends on ARCH_OMAP2PLUS
695 select DEBUG_OMAP2PLUS_UART
696
697 config DEBUG_TI81XXUART2
698 bool "Kernel low-level debugging messages via TI81XX UART2"
699 depends on ARCH_OMAP2PLUS
700 select DEBUG_OMAP2PLUS_UART
701
702 config DEBUG_TI81XXUART3
703 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
704 depends on ARCH_OMAP2PLUS
705 select DEBUG_OMAP2PLUS_UART
706
707 config DEBUG_AM33XXUART1
708 bool "Kernel low-level debugging messages via AM33XX UART1"
709 depends on ARCH_OMAP2PLUS
710 select DEBUG_OMAP2PLUS_UART
711
712 config DEBUG_ZOOM_UART
713 bool "Kernel low-level debugging messages via Zoom2/3 UART"
714 depends on ARCH_OMAP2PLUS
715 select DEBUG_OMAP2PLUS_UART
716
717 config DEBUG_PICOXCELL_UART
718 depends on ARCH_PICOXCELL
719 bool "Use PicoXcell UART for low-level debug"
720 select DEBUG_UART_8250
721 help
722 Say Y here if you want kernel low-level debugging support
723 on PicoXcell based platforms.
724
725 config DEBUG_PXA_UART1
726 depends on ARCH_PXA
727 bool "Use PXA UART1 for low-level debug"
728 select DEBUG_UART_8250
729 help
730 Say Y here if you want kernel low-level debugging support
731 on PXA UART1.
732
733 config DEBUG_QCOM_UARTDM
734 bool "Kernel low-level debugging messages via QCOM UARTDM"
735 depends on ARCH_QCOM
736 help
737 Say Y here if you want the debug print routines to direct
738 their output to the serial port on Qualcomm devices.
739
740 ARCH DEBUG_UART_PHYS DEBUG_UART_VIRT
741 APQ8064 0x16640000 0xf0040000
742 APQ8084 0xf995e000 0xfa75e000
743 MSM8X60 0x19c40000 0xf0040000
744 MSM8960 0x16440000 0xf0040000
745 MSM8974 0xf991e000 0xfa71e000
746
747 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
748 options based on your needs.
749
750 config DEBUG_REALVIEW_STD_PORT
751 bool "RealView Default UART"
752 depends on ARCH_REALVIEW
753 select DEBUG_UART_PL01X
754 help
755 Say Y here if you want the debug print routines to direct
756 their output to the serial port on RealView EB, PB11MP, PBA8
757 and PBX platforms.
758
759 config DEBUG_REALVIEW_PB1176_PORT
760 bool "RealView PB1176 UART"
761 depends on MACH_REALVIEW_PB1176
762 select DEBUG_UART_PL01X
763 help
764 Say Y here if you want the debug print routines to direct
765 their output to the standard serial port on the RealView
766 PB1176 platform.
767
768 config DEBUG_RK29_UART0
769 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
770 depends on ARCH_ROCKCHIP
771 select DEBUG_UART_8250
772 help
773 Say Y here if you want kernel low-level debugging support
774 on Rockchip based platforms.
775
776 config DEBUG_RK29_UART1
777 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
778 depends on ARCH_ROCKCHIP
779 select DEBUG_UART_8250
780 help
781 Say Y here if you want kernel low-level debugging support
782 on Rockchip based platforms.
783
784 config DEBUG_RK29_UART2
785 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
786 depends on ARCH_ROCKCHIP
787 select DEBUG_UART_8250
788 help
789 Say Y here if you want kernel low-level debugging support
790 on Rockchip based platforms.
791
792 config DEBUG_RK3X_UART0
793 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
794 depends on ARCH_ROCKCHIP
795 select DEBUG_UART_8250
796 help
797 Say Y here if you want kernel low-level debugging support
798 on Rockchip based platforms.
799
800 config DEBUG_RK3X_UART1
801 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
802 depends on ARCH_ROCKCHIP
803 select DEBUG_UART_8250
804 help
805 Say Y here if you want kernel low-level debugging support
806 on Rockchip based platforms.
807
808 config DEBUG_RK3X_UART2
809 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
810 depends on ARCH_ROCKCHIP
811 select DEBUG_UART_8250
812 help
813 Say Y here if you want kernel low-level debugging support
814 on Rockchip based platforms.
815
816 config DEBUG_RK3X_UART3
817 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
818 depends on ARCH_ROCKCHIP
819 select DEBUG_UART_8250
820 help
821 Say Y here if you want kernel low-level debugging support
822 on Rockchip based platforms.
823
824 config DEBUG_RK32_UART2
825 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
826 depends on ARCH_ROCKCHIP
827 select DEBUG_UART_8250
828 help
829 Say Y here if you want kernel low-level debugging support
830 on Rockchip RK32xx based platforms.
831
832 config DEBUG_R7S72100_SCIF2
833 bool "Kernel low-level debugging messages via SCIF2 on R7S72100"
834 depends on ARCH_R7S72100
835 help
836 Say Y here if you want kernel low-level debugging support
837 via SCIF2 on Renesas RZ/A1H (R7S72100).
838
839 config DEBUG_RCAR_GEN1_SCIF0
840 bool "Kernel low-level debugging messages via SCIF0 on R8A7778"
841 depends on ARCH_R8A7778
842 help
843 Say Y here if you want kernel low-level debugging support
844 via SCIF0 on Renesas R-Car M1A (R8A7778).
845
846 config DEBUG_RCAR_GEN1_SCIF2
847 bool "Kernel low-level debugging messages via SCIF2 on R8A7779"
848 depends on ARCH_R8A7779
849 help
850 Say Y here if you want kernel low-level debugging support
851 via SCIF2 on Renesas R-Car H1 (R8A7779).
852
853 config DEBUG_RCAR_GEN2_SCIF0
854 bool "Kernel low-level debugging messages via SCIF0 on R8A7790/R8A7791/R8A7793"
855 depends on ARCH_R8A7790 || ARCH_R8A7791 || ARCH_R8A7793
856 help
857 Say Y here if you want kernel low-level debugging support
858 via SCIF0 on Renesas R-Car H2 (R8A7790), M2-W (R8A7791), or
859 M2-N (R8A7793).
860
861 config DEBUG_RCAR_GEN2_SCIF2
862 bool "Kernel low-level debugging messages via SCIF2 on R8A7794"
863 depends on ARCH_R8A7794
864 help
865 Say Y here if you want kernel low-level debugging support
866 via SCIF2 on Renesas R-Car E2 (R8A7794).
867
868 config DEBUG_RMOBILE_SCIFA0
869 bool "Kernel low-level debugging messages via SCIFA0 on R8A73A4"
870 depends on ARCH_R8A73A4
871 help
872 Say Y here if you want kernel low-level debugging support
873 via SCIFA0 on Renesas R-Mobile APE6 (R8A73A4).
874
875 config DEBUG_RMOBILE_SCIFA1
876 bool "Kernel low-level debugging messages via SCIFA1 on R8A7740"
877 depends on ARCH_R8A7740
878 help
879 Say Y here if you want kernel low-level debugging support
880 via SCIFA1 on Renesas R-Mobile A1 (R8A7740).
881
882 config DEBUG_RMOBILE_SCIFA4
883 bool "Kernel low-level debugging messages via SCIFA4 on SH73A0"
884 depends on ARCH_SH73A0
885 help
886 Say Y here if you want kernel low-level debugging support
887 via SCIFA4 on Renesas SH-Mobile AG5 (SH73A0).
888
889 config DEBUG_S3C_UART0
890 depends on PLAT_SAMSUNG
891 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
892 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
893 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
894 select DEBUG_S5PV210_UART if ARCH_S5PV210
895 bool "Use Samsung S3C UART 0 for low-level debug"
896 help
897 Say Y here if you want the debug print routines to direct
898 their output to UART 0. The port must have been initialised
899 by the boot-loader before use.
900
901 config DEBUG_S3C_UART1
902 depends on PLAT_SAMSUNG
903 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
904 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
905 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
906 select DEBUG_S5PV210_UART if ARCH_S5PV210
907 bool "Use Samsung S3C UART 1 for low-level debug"
908 help
909 Say Y here if you want the debug print routines to direct
910 their output to UART 1. The port must have been initialised
911 by the boot-loader before use.
912
913 config DEBUG_S3C_UART2
914 depends on PLAT_SAMSUNG
915 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
916 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
917 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
918 select DEBUG_S5PV210_UART if ARCH_S5PV210
919 bool "Use Samsung S3C UART 2 for low-level debug"
920 help
921 Say Y here if you want the debug print routines to direct
922 their output to UART 2. The port must have been initialised
923 by the boot-loader before use.
924
925 config DEBUG_S3C_UART3
926 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
927 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
928 select DEBUG_S3C64XX_UART if ARCH_S3C64XX
929 select DEBUG_S5PV210_UART if ARCH_S5PV210
930 bool "Use Samsung S3C UART 3 for low-level debug"
931 help
932 Say Y here if you want the debug print routines to direct
933 their output to UART 3. The port must have been initialised
934 by the boot-loader before use.
935
936 config DEBUG_S3C2410_UART0
937 depends on ARCH_S3C24XX
938 select DEBUG_S3C2410_UART
939 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
940 help
941 Say Y here if you want the debug print routines to direct
942 their output to UART 0. The port must have been initialised
943 by the boot-loader before use.
944
945 config DEBUG_S3C2410_UART1
946 depends on ARCH_S3C24XX
947 select DEBUG_S3C2410_UART
948 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
949 help
950 Say Y here if you want the debug print routines to direct
951 their output to UART 1. The port must have been initialised
952 by the boot-loader before use.
953
954 config DEBUG_S3C2410_UART2
955 depends on ARCH_S3C24XX
956 select DEBUG_S3C2410_UART
957 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
958 help
959 Say Y here if you want the debug print routines to direct
960 their output to UART 2. The port must have been initialised
961 by the boot-loader before use.
962
963 config DEBUG_SA1100
964 depends on ARCH_SA1100
965 bool "Use SA1100 UARTs for low-level debug"
966 help
967 Say Y here if you want kernel low-level debugging support
968 on SA-11x0 UART ports. The kernel will check for the first
969 enabled UART in a sequence 3-1-2.
970
971 config DEBUG_SOCFPGA_UART0
972 depends on ARCH_SOCFPGA
973 bool "Use SOCFPGA UART0 for low-level debug"
974 select DEBUG_UART_8250
975 help
976 Say Y here if you want kernel low-level debugging support
977 on SOCFPGA(Cyclone 5 and Arria 5) based platforms.
978
979 config DEBUG_SOCFPGA_UART1
980 depends on ARCH_SOCFPGA
981 bool "Use SOCFPGA UART1 for low-level debug"
982 select DEBUG_UART_8250
983 help
984 Say Y here if you want kernel low-level debugging support
985 on SOCFPGA(Arria 10) based platforms.
986
987
988 config DEBUG_SUN9I_UART0
989 bool "Kernel low-level debugging messages via sun9i UART0"
990 depends on MACH_SUN9I
991 select DEBUG_UART_8250
992 help
993 Say Y here if you want kernel low-level debugging support
994 on Allwinner A80 based platforms on the UART0.
995
996 config DEBUG_SUNXI_UART0
997 bool "Kernel low-level debugging messages via sunXi UART0"
998 depends on ARCH_SUNXI
999 select DEBUG_UART_8250
1000 help
1001 Say Y here if you want kernel low-level debugging support
1002 on Allwinner A1X based platforms on the UART0.
1003
1004 config DEBUG_SUNXI_UART1
1005 bool "Kernel low-level debugging messages via sunXi UART1"
1006 depends on ARCH_SUNXI
1007 select DEBUG_UART_8250
1008 help
1009 Say Y here if you want kernel low-level debugging support
1010 on Allwinner A1X based platforms on the UART1.
1011
1012 config DEBUG_SUNXI_R_UART
1013 bool "Kernel low-level debugging messages via sunXi R_UART"
1014 depends on MACH_SUN6I || MACH_SUN8I
1015 select DEBUG_UART_8250
1016 help
1017 Say Y here if you want kernel low-level debugging support
1018 on Allwinner A31/A23 based platforms on the R_UART.
1019
1020 config DEBUG_SIRFPRIMA2_UART1
1021 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
1022 depends on ARCH_PRIMA2
1023 select DEBUG_SIRFSOC_UART
1024 help
1025 Say Y here if you want the debug print routines to direct
1026 their output to the uart1 port on SiRFprimaII devices.
1027
1028 config DEBUG_SIRFATLAS7_UART0
1029 bool "Kernel low-level debugging messages via SiRFatlas7 UART0"
1030 depends on ARCH_ATLAS7
1031 select DEBUG_SIRFSOC_UART
1032 help
1033 Say Y here if you want the debug print routines to direct
1034 their output to the uart0 port on SiRFATLAS7 devices.The uart0
1035 is used on SiRFATLAS7 as a extra debug port.sometimes an extra
1036 debug port can be very useful.
1037
1038 config DEBUG_SIRFATLAS7_UART1
1039 bool "Kernel low-level debugging messages via SiRFatlas7 UART1"
1040 depends on ARCH_ATLAS7
1041 select DEBUG_SIRFSOC_UART
1042 help
1043 Say Y here if you want the debug print routines to direct
1044 their output to the uart1 port on SiRFATLAS7 devices.
1045
1046 config DEBUG_SPEAR3XX
1047 bool "Kernel low-level debugging messages via ST SPEAr 3xx/6xx UART"
1048 depends on ARCH_SPEAR3XX || ARCH_SPEAR6XX
1049 select DEBUG_UART_PL01X
1050 help
1051 Say Y here if you want kernel low-level debugging support
1052 on ST SPEAr based platforms.
1053
1054 config DEBUG_SPEAR13XX
1055 bool "Kernel low-level debugging messages via ST SPEAr 13xx UART"
1056 depends on ARCH_SPEAR13XX
1057 select DEBUG_UART_PL01X
1058 help
1059 Say Y here if you want kernel low-level debugging support
1060 on ST SPEAr13xx based platforms.
1061
1062 config STIH41X_DEBUG_ASC2
1063 bool "Use StiH415/416 ASC2 UART for low-level debug"
1064 depends on ARCH_STI
1065 select DEBUG_STI_UART
1066 help
1067 Say Y here if you want kernel low-level debugging support
1068 on STiH415/416 based platforms like b2000, which has
1069 default UART wired up to ASC2.
1070
1071 If unsure, say N.
1072
1073 config STIH41X_DEBUG_SBC_ASC1
1074 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
1075 depends on ARCH_STI
1076 select DEBUG_STI_UART
1077 help
1078 Say Y here if you want kernel low-level debugging support
1079 on STiH415/416 based platforms like b2020. which has
1080 default UART wired up to SBC ASC1.
1081
1082 If unsure, say N.
1083
1084 config TEGRA_DEBUG_UART_AUTO_ODMDATA
1085 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
1086 depends on ARCH_TEGRA
1087 select DEBUG_TEGRA_UART
1088 help
1089 Automatically determines which UART to use for low-level
1090 debug based on the ODMDATA value. This value is part of
1091 the BCT, and is written to the boot memory device using
1092 nvflash, or other flashing tool. When bits 19:18 are 3,
1093 then bits 17:15 indicate which UART to use; 0/1/2/3/4
1094 are UART A/B/C/D/E.
1095
1096 config TEGRA_DEBUG_UARTA
1097 bool "Kernel low-level debugging messages via Tegra UART A"
1098 depends on ARCH_TEGRA
1099 select DEBUG_TEGRA_UART
1100 help
1101 Say Y here if you want kernel low-level debugging support
1102 on Tegra based platforms.
1103
1104 config TEGRA_DEBUG_UARTB
1105 bool "Kernel low-level debugging messages via Tegra UART B"
1106 depends on ARCH_TEGRA
1107 select DEBUG_TEGRA_UART
1108 help
1109 Say Y here if you want kernel low-level debugging support
1110 on Tegra based platforms.
1111
1112 config TEGRA_DEBUG_UARTC
1113 bool "Kernel low-level debugging messages via Tegra UART C"
1114 depends on ARCH_TEGRA
1115 select DEBUG_TEGRA_UART
1116 help
1117 Say Y here if you want kernel low-level debugging support
1118 on Tegra based platforms.
1119
1120 config TEGRA_DEBUG_UARTD
1121 bool "Kernel low-level debugging messages via Tegra UART D"
1122 depends on ARCH_TEGRA
1123 select DEBUG_TEGRA_UART
1124 help
1125 Say Y here if you want kernel low-level debugging support
1126 on Tegra based platforms.
1127
1128 config TEGRA_DEBUG_UARTE
1129 bool "Kernel low-level debugging messages via Tegra UART E"
1130 depends on ARCH_TEGRA
1131 select DEBUG_TEGRA_UART
1132 help
1133 Say Y here if you want kernel low-level debugging support
1134 on Tegra based platforms.
1135
1136 config DEBUG_U300_UART
1137 bool "Kernel low-level debugging messages via U300 UART0"
1138 depends on ARCH_U300
1139 select DEBUG_UART_PL01X
1140 help
1141 Say Y here if you want the debug print routines to direct
1142 their output to the uart port on U300 devices.
1143
1144 config DEBUG_UX500_UART
1145 depends on ARCH_U8500
1146 bool "Use Ux500 UART for low-level debug"
1147 help
1148 Say Y here if you want kernel low-level debugging support
1149 on Ux500 based platforms.
1150
1151 config DEBUG_VERSATILE
1152 bool "Kernel low-level debugging messages via ARM Versatile UART"
1153 depends on ARCH_VERSATILE
1154 select DEBUG_UART_PL01X
1155 help
1156 Say Y here if you want kernel low-level debugging support
1157 on ARM Versatile platforms.
1158
1159 config DEBUG_VEXPRESS_UART0_DETECT
1160 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
1161 depends on ARCH_VEXPRESS && CPU_CP15_MMU
1162 help
1163 This option enables a simple heuristic which tries to determine
1164 the motherboard's memory map variant (original or RS1) and then
1165 choose the relevant UART0 base address.
1166
1167 Note that this will only work with standard A-class core tiles,
1168 and may fail with non-standard SMM or custom software models.
1169
1170 config DEBUG_VEXPRESS_UART0_CA9
1171 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
1172 depends on ARCH_VEXPRESS
1173 select DEBUG_UART_PL01X
1174 help
1175 This option selects UART0 at 0x10009000. Except for custom models,
1176 this applies only to the V2P-CA9 tile.
1177
1178 config DEBUG_VEXPRESS_UART0_RS1
1179 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
1180 depends on ARCH_VEXPRESS
1181 select DEBUG_UART_PL01X
1182 help
1183 This option selects UART0 at 0x1c090000. This applies to most
1184 of the tiles using the RS1 memory map, including all new A-class
1185 core tiles, FPGA-based SMMs and software models.
1186
1187 config DEBUG_VEXPRESS_UART0_CRX
1188 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
1189 depends on ARCH_VEXPRESS && !MMU
1190 select DEBUG_UART_PL01X
1191 help
1192 This option selects UART0 at 0xb0090000. This is appropriate for
1193 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
1194
1195 config DEBUG_VF_UART
1196 bool "Vybrid UART"
1197 depends on SOC_VF610
1198 help
1199 Say Y here if you want kernel low-level debugging support
1200 on Vybrid based platforms.
1201
1202 config DEBUG_VT8500_UART0
1203 bool "Use UART0 on VIA/Wondermedia SoCs"
1204 depends on ARCH_VT8500
1205 help
1206 This option selects UART0 on VIA/Wondermedia System-on-a-chip
1207 devices, including VT8500, WM8505, WM8650 and WM8850.
1208
1209 config DEBUG_ZTE_ZX
1210 bool "Use ZTE ZX UART"
1211 select DEBUG_UART_PL01X
1212 depends on ARCH_ZX
1213 help
1214 Say Y here if you are enabling ZTE ZX296702 SOC and need
1215 debug uart support.
1216
1217 This option is preferred over the platform specific
1218 options; the platform specific options are deprecated
1219 and will be soon removed.
1220
1221 config DEBUG_ZYNQ_UART0
1222 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
1223 depends on ARCH_ZYNQ
1224 help
1225 Say Y here if you want the debug print routines to direct
1226 their output to UART0 on the Zynq platform.
1227
1228 config DEBUG_ZYNQ_UART1
1229 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
1230 depends on ARCH_ZYNQ
1231 help
1232 Say Y here if you want the debug print routines to direct
1233 their output to UART1 on the Zynq platform.
1234
1235 If you have a ZC702 board and want early boot messages to
1236 appear on the USB serial adaptor, select this option.
1237
1238 config DEBUG_ICEDCC
1239 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
1240 help
1241 Say Y here if you want the debug print routines to direct
1242 their output to the EmbeddedICE macrocell's DCC channel using
1243 co-processor 14. This is known to work on the ARM9 style ICE
1244 channel and on the XScale with the PEEDI.
1245
1246 Note that the system will appear to hang during boot if there
1247 is nothing connected to read from the DCC.
1248
1249 config DEBUG_SEMIHOSTING
1250 bool "Kernel low-level debug output via semihosting I/O"
1251 help
1252 Semihosting enables code running on an ARM target to use
1253 the I/O facilities on a host debugger/emulator through a
1254 simple SVC call. The host debugger or emulator must have
1255 semihosting enabled for the special svc call to be trapped
1256 otherwise the kernel will crash.
1257
1258 This is known to work with OpenOCD, as well as
1259 ARM's Fast Models, or any other controlling environment
1260 that implements semihosting.
1261
1262 For more details about semihosting, please see
1263 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
1264
1265 config DEBUG_LL_UART_8250
1266 bool "Kernel low-level debugging via 8250 UART"
1267 help
1268 Say Y here if you wish the debug print routes to direct
1269 their output to an 8250 UART. You can use this option
1270 to provide the parameters for the 8250 UART rather than
1271 selecting one of the platform specific options above if
1272 you know the parameters for the port.
1273
1274 This option is preferred over the platform specific
1275 options; the platform specific options are deprecated
1276 and will be soon removed.
1277
1278 config DEBUG_LL_UART_EFM32
1279 bool "Kernel low-level debugging via efm32 UART"
1280 depends on ARCH_EFM32
1281 help
1282 Say Y here if you want the debug print routines to direct
1283 their output to an UART or USART port on efm32 based
1284 machines. Use the following addresses for DEBUG_UART_PHYS:
1285
1286 0x4000c000 | USART0
1287 0x4000c400 | USART1
1288 0x4000c800 | USART2
1289 0x4000e000 | UART0
1290 0x4000e400 | UART1
1291
1292 config DEBUG_LL_UART_PL01X
1293 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
1294 help
1295 Say Y here if you wish the debug print routes to direct
1296 their output to a PL01x Primecell UART. You can use
1297 this option to provide the parameters for the UART
1298 rather than selecting one of the platform specific
1299 options above if you know the parameters for the port.
1300
1301 This option is preferred over the platform specific
1302 options; the platform specific options are deprecated
1303 and will be soon removed.
1304
1305endchoice
1306
1307config DEBUG_EXYNOS_UART
1308 bool
1309
1310config DEBUG_S3C2410_UART
1311 bool
1312 select DEBUG_S3C24XX_UART
1313
1314config DEBUG_S3C24XX_UART
1315 bool
1316
1317config DEBUG_S3C64XX_UART
1318 bool
1319
1320config DEBUG_S5PV210_UART
1321 bool
1322
1323config DEBUG_OMAP2PLUS_UART
1324 bool
1325 depends on ARCH_OMAP2PLUS
1326
1327config DEBUG_IMX_UART_PORT
1328 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
1329 DEBUG_IMX25_UART || \
1330 DEBUG_IMX21_IMX27_UART || \
1331 DEBUG_IMX31_UART || \
1332 DEBUG_IMX35_UART || \
1333 DEBUG_IMX50_UART || \
1334 DEBUG_IMX51_UART || \
1335 DEBUG_IMX53_UART || \
1336 DEBUG_IMX6Q_UART || \
1337 DEBUG_IMX6SL_UART || \
1338 DEBUG_IMX6SX_UART || \
1339 DEBUG_IMX6UL_UART || \
1340 DEBUG_IMX7D_UART
1341 default 1
1342 depends on ARCH_MXC
1343 help
1344 Choose UART port on which kernel low-level debug messages
1345 should be output.
1346
1347config DEBUG_VF_UART_PORT
1348 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1349 default 1
1350 range 0 3
1351 depends on SOC_VF610
1352 help
1353 Choose UART port on which kernel low-level debug messages
1354 should be output.
1355
1356config DEBUG_TEGRA_UART
1357 bool
1358 depends on ARCH_TEGRA
1359
1360config DEBUG_STI_UART
1361 bool
1362 depends on ARCH_STI
1363
1364config DEBUG_SIRFSOC_UART
1365 bool
1366 depends on ARCH_SIRF
1367
1368config DEBUG_LL_INCLUDE
1369 string
1370 default "debug/sa1100.S" if DEBUG_SA1100
1371 default "debug/palmchip.S" if DEBUG_UART_8250_PALMCHIP
1372 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1373 default "debug/at91.S" if DEBUG_AT91_UART
1374 default "debug/asm9260.S" if DEBUG_ASM9260_UART
1375 default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1376 default "debug/dc21285.S" if DEBUG_DC21285_PORT
1377 default "debug/meson.S" if DEBUG_MESON_UARTAO
1378 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1379 default "debug/exynos.S" if DEBUG_EXYNOS_UART
1380 default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1381 default "debug/icedcc.S" if DEBUG_ICEDCC
1382 default "debug/imx.S" if DEBUG_IMX1_UART || \
1383 DEBUG_IMX25_UART || \
1384 DEBUG_IMX21_IMX27_UART || \
1385 DEBUG_IMX31_UART || \
1386 DEBUG_IMX35_UART || \
1387 DEBUG_IMX50_UART || \
1388 DEBUG_IMX51_UART || \
1389 DEBUG_IMX53_UART ||\
1390 DEBUG_IMX6Q_UART || \
1391 DEBUG_IMX6SL_UART || \
1392 DEBUG_IMX6SX_UART || \
1393 DEBUG_IMX6UL_UART || \
1394 DEBUG_IMX7D_UART
1395 default "debug/ks8695.S" if DEBUG_KS8695_UART
1396 default "debug/msm.S" if DEBUG_QCOM_UARTDM
1397 default "debug/netx.S" if DEBUG_NETX_UART
1398 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1399 default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
1400 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
1401 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF2
1402 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF0
1403 default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF2
1404 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA0
1405 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA1
1406 default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
1407 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART || DEBUG_S3C64XX_UART
1408 default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1409 default "debug/sirf.S" if DEBUG_SIRFSOC_UART
1410 default "debug/sti.S" if DEBUG_STI_UART
1411 default "debug/tegra.S" if DEBUG_TEGRA_UART
1412 default "debug/ux500.S" if DEBUG_UX500_UART
1413 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1414 default "debug/vf.S" if DEBUG_VF_UART
1415 default "debug/vt8500.S" if DEBUG_VT8500_UART0
1416 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1417 default "debug/bcm63xx.S" if DEBUG_BCM63XX_UART
1418 default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0
1419 default "mach/debug-macro.S"
1420
1421# Compatibility options for PL01x
1422config DEBUG_UART_PL01X
1423 bool
1424
1425# Compatibility options for 8250
1426config DEBUG_UART_8250
1427 def_bool ARCH_EBSA110 || \
1428 ARCH_IOP13XX || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || \
1429 ARCH_RPC
1430
1431config DEBUG_UART_PHYS
1432 hex "Physical base address of debug UART"
1433 default 0x00100a00 if DEBUG_NETX_UART
1434 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1435 default 0x01c28000 if DEBUG_SUNXI_UART0
1436 default 0x01c28400 if DEBUG_SUNXI_UART1
1437 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1438 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1439 default 0x01f02800 if DEBUG_SUNXI_R_UART
1440 default 0x02530c00 if DEBUG_KEYSTONE_UART0
1441 default 0x02531000 if DEBUG_KEYSTONE_UART1
1442 default 0x03010fe0 if ARCH_RPC
1443 default 0x07000000 if DEBUG_SUN9I_UART0
1444 default 0x09405000 if DEBUG_ZTE_ZX
1445 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
1446 DEBUG_VEXPRESS_UART0_CA9
1447 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1448 default 0x10124000 if DEBUG_RK3X_UART0
1449 default 0x10126000 if DEBUG_RK3X_UART1
1450 default 0x101f1000 if DEBUG_VERSATILE
1451 default 0x101fb000 if DEBUG_NOMADIK_UART
1452 default 0x11002000 if DEBUG_MT8127_UART0
1453 default 0x11006000 if DEBUG_MT6589_UART0
1454 default 0x11009000 if DEBUG_MT8135_UART3
1455 default 0x16000000 if DEBUG_INTEGRATOR
1456 default 0x18000300 if DEBUG_BCM_5301X
1457 default 0x18010000 if DEBUG_SIRFATLAS7_UART0
1458 default 0x18020000 if DEBUG_SIRFATLAS7_UART1
1459 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1460 default 0x20001000 if DEBUG_HIP01_UART
1461 default 0x20060000 if DEBUG_RK29_UART0
1462 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1463 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1464 default 0x20201000 if DEBUG_BCM2835
1465 default 0x3f201000 if DEBUG_BCM2836
1466 default 0x3e000000 if DEBUG_BCM_KONA_UART
1467 default 0x4000e400 if DEBUG_LL_UART_EFM32
1468 default 0x40081000 if DEBUG_LPC18XX_UART0
1469 default 0x40090000 if DEBUG_LPC32XX
1470 default 0x40100000 if DEBUG_PXA_UART1
1471 default 0x42000000 if DEBUG_GEMINI
1472 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1473 DEBUG_S3C2410_UART0)
1474 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1475 DEBUG_S3C2410_UART1)
1476 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1477 DEBUG_S3C2410_UART2)
1478 default 0x78000000 if DEBUG_CNS3XXX
1479 default 0x7c0003f8 if DEBUG_FOOTBRIDGE_COM1
1480 default 0x7f005000 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART0
1481 default 0x7f005400 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART1
1482 default 0x7f005800 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART2
1483 default 0x7f005c00 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART3
1484 default 0x80010000 if DEBUG_ASM9260_UART
1485 default 0x80070000 if DEBUG_IMX23_UART
1486 default 0x80074000 if DEBUG_IMX28_UART
1487 default 0x80230000 if DEBUG_PICOXCELL_UART
1488 default 0x808c0000 if DEBUG_EP93XX || ARCH_EP93XX
1489 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1490 default 0xb0060000 if DEBUG_SIRFPRIMA2_UART1
1491 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1492 default 0xc0013000 if DEBUG_U300_UART
1493 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1494 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1495 default 0xd0000000 if DEBUG_SPEAR3XX
1496 default 0xd0012000 if DEBUG_MVEBU_UART0
1497 default 0xc81004c0 if DEBUG_MESON_UARTAO
1498 default 0xd4017000 if DEBUG_MMP_UART2
1499 default 0xd4018000 if DEBUG_MMP_UART3
1500 default 0xe0000000 if DEBUG_SPEAR13XX
1501 default 0xe4007000 if DEBUG_HIP04_UART
1502 default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
1503 default 0xe6c50000 if DEBUG_RMOBILE_SCIFA1
1504 default 0xe6c80000 if DEBUG_RMOBILE_SCIFA4
1505 default 0xe6e58000 if DEBUG_RCAR_GEN2_SCIF2
1506 default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
1507 default 0xe8008000 if DEBUG_R7S72100_SCIF2
1508 default 0xf0000be0 if ARCH_EBSA110
1509 default 0xf040ab00 if DEBUG_BRCMSTB_UART
1510 default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
1511 default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
1512 default 0xf7fc9000 if DEBUG_BERLIN_UART
1513 default 0xf8b00000 if DEBUG_HIX5HD2_UART
1514 default 0xf991e000 if DEBUG_QCOM_UARTDM
1515 default 0xfcb00000 if DEBUG_HI3620_UART
1516 default 0xfd883000 if DEBUG_ALPINE_UART0
1517 default 0xfe800000 if ARCH_IOP32X
1518 default 0xff690000 if DEBUG_RK32_UART2
1519 default 0xffc02000 if DEBUG_SOCFPGA_UART0
1520 default 0xffc02100 if DEBUG_SOCFPGA_UART1
1521 default 0xffd82340 if ARCH_IOP13XX
1522 default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
1523 default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
1524 default 0xfff36000 if DEBUG_HIGHBANK_UART
1525 default 0xfffb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
1526 default 0xfffb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
1527 default 0xfffb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
1528 default 0xfffe8600 if DEBUG_BCM63XX_UART
1529 default 0xfffff700 if ARCH_IOP33X
1530 depends on ARCH_EP93XX || \
1531 DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1532 DEBUG_LL_UART_EFM32 || \
1533 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1534 DEBUG_NETX_UART || \
1535 DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
1536 DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
1537 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
1538 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
1539 DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
1540 DEBUG_S3C64XX_UART || \
1541 DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
1542 DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
1543 DEBUG_AT91_UART
1544
1545config DEBUG_UART_VIRT
1546 hex "Virtual base address of debug UART"
1547 default 0xe0000a00 if DEBUG_NETX_UART
1548 default 0xe0010fe0 if ARCH_RPC
1549 default 0xf0000be0 if ARCH_EBSA110
1550 default 0xf0010000 if DEBUG_ASM9260_UART
1551 default 0xf01fb000 if DEBUG_NOMADIK_UART
1552 default 0xf0201000 if DEBUG_BCM2835 || DEBUG_BCM2836
1553 default 0xf1000300 if DEBUG_BCM_5301X
1554 default 0xf1002000 if DEBUG_MT8127_UART0
1555 default 0xf1006000 if DEBUG_MT6589_UART0
1556 default 0xf1009000 if DEBUG_MT8135_UART3
1557 default 0xf11f1000 if DEBUG_VERSATILE
1558 default 0xf1600000 if DEBUG_INTEGRATOR
1559 default 0xf1c28000 if DEBUG_SUNXI_UART0
1560 default 0xf1c28400 if DEBUG_SUNXI_UART1
1561 default 0xf1f02800 if DEBUG_SUNXI_R_UART
1562 default 0xf31004c0 if DEBUG_MESON_UARTAO
1563 default 0xf4090000 if DEBUG_LPC32XX
1564 default 0xf4200000 if DEBUG_GEMINI
1565 default 0xf6200000 if DEBUG_PXA_UART1
1566 default 0xf7000000 if DEBUG_SUN9I_UART0
1567 default 0xf7000000 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART0
1568 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1569 DEBUG_S3C2410_UART0)
1570 default 0xf7000400 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART1
1571 default 0xf7000800 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART2
1572 default 0xf7000c00 if DEBUG_S3C64XX_UART && DEBUG_S3C_UART3
1573 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1574 DEBUG_S3C2410_UART1)
1575 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1576 DEBUG_S3C2410_UART2)
1577 default 0xf7fc9000 if DEBUG_BERLIN_UART
1578 default 0xf8007000 if DEBUG_HIP04_UART
1579 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1580 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1581 default 0xfa71e000 if DEBUG_QCOM_UARTDM
1582 default 0xfb002000 if DEBUG_CNS3XXX
1583 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1584 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1585 default 0xfc40ab00 if DEBUG_BRCMSTB_UART
1586 default 0xfc705000 if DEBUG_ZTE_ZX
1587 default 0xfcfe8600 if DEBUG_BCM63XX_UART
1588 default 0xfd000000 if DEBUG_SPEAR3XX || DEBUG_SPEAR13XX
1589 default 0xfd012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_MV78XX0
1590 default 0xfd883000 if DEBUG_ALPINE_UART0
1591 default 0xfde12000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_DOVE
1592 default 0xfe012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_ORION5X
1593 default 0xfe017000 if DEBUG_MMP_UART2
1594 default 0xfe018000 if DEBUG_MMP_UART3
1595 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1596 default 0xfe230000 if DEBUG_PICOXCELL_UART
1597 default 0xfe300000 if DEBUG_BCM_KONA_UART
1598 default 0xfe800000 if ARCH_IOP32X
1599 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1600 default 0xfeb24000 if DEBUG_RK3X_UART0
1601 default 0xfeb26000 if DEBUG_RK3X_UART1
1602 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1603 default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1604 default 0xfec02000 if DEBUG_SOCFPGA_UART0
1605 default 0xfec02100 if DEBUG_SOCFPGA_UART1
1606 default 0xfec12000 if (DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE) && ARCH_MVEBU
1607 default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
1608 default 0xfec10000 if DEBUG_SIRFATLAS7_UART0
1609 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1610 default 0xfec20000 if DEBUG_SIRFATLAS7_UART1
1611 default 0xfec60000 if DEBUG_SIRFPRIMA2_UART1
1612 default 0xfec90000 if DEBUG_RK32_UART2
1613 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1614 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1615 default 0xfed60000 if DEBUG_RK29_UART0
1616 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1617 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1618 default 0xfedc0000 if DEBUG_EP93XX
1619 default 0xfee003f8 if DEBUG_FOOTBRIDGE_COM1
1620 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1621 default 0xfee82340 if ARCH_IOP13XX
1622 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1623 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1624 default 0xfef36000 if DEBUG_HIGHBANK_UART
1625 default 0xfefb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
1626 default 0xfefb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
1627 default 0xfefb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
1628 default 0xfefff700 if ARCH_IOP33X
1629 default 0xff003000 if DEBUG_U300_UART
1630 default 0xffd01000 if DEBUG_HIP01_UART
1631 default DEBUG_UART_PHYS if !MMU
1632 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1633 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1634 DEBUG_NETX_UART || \
1635 DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
1636 DEBUG_S3C64XX_UART || \
1637 DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
1638 DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0
1639
1640config DEBUG_UART_8250_SHIFT
1641 int "Register offset shift for the 8250 debug UART"
1642 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1643 default 0 if DEBUG_FOOTBRIDGE_COM1 || ARCH_IOP32X || DEBUG_BCM_5301X || \
1644 DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || DEBUG_OMAP7XXUART3
1645 default 2
1646
1647config DEBUG_UART_8250_WORD
1648 bool "Use 32-bit accesses for 8250 UART"
1649 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1650 depends on DEBUG_UART_8250_SHIFT >= 2
1651 default y if DEBUG_PICOXCELL_UART || \
1652 DEBUG_SOCFPGA_UART0 || DEBUG_SOCFPGA_UART1 || \
1653 DEBUG_KEYSTONE_UART0 || DEBUG_KEYSTONE_UART1 || \
1654 DEBUG_ALPINE_UART0 || \
1655 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1656 DEBUG_DAVINCI_DA8XX_UART2 || \
1657 DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \
1658 DEBUG_BRCMSTB_UART
1659
1660config DEBUG_UART_8250_PALMCHIP
1661 bool "8250 UART is Palmchip BK-310x"
1662 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1663 help
1664 Palmchip provides a UART implementation compatible with 16550
1665 except for having a different register layout. Say Y here if
1666 the debug UART is of this type.
1667
1668config DEBUG_UART_8250_FLOW_CONTROL
1669 bool "Enable flow control for 8250 UART"
1670 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1671 default y if ARCH_EBSA110 || DEBUG_FOOTBRIDGE_COM1 || DEBUG_GEMINI || ARCH_RPC
1672
1673config DEBUG_UNCOMPRESS
1674 bool
1675 depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
1676 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1677 (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1678 help
1679 This option influences the normal decompressor output for
1680 multiplatform kernels. Normally, multiplatform kernels disable
1681 decompressor output because it is not possible to know where to
1682 send the decompressor output.
1683
1684 When this option is set, the selected DEBUG_LL output method
1685 will be re-used for normal decompressor output on multiplatform
1686 kernels.
1687
1688
1689config UNCOMPRESS_INCLUDE
1690 string
1691 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1692 PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
1693 default "mach/uncompress.h"
1694
1695config EARLY_PRINTK
1696 bool "Early printk"
1697 depends on DEBUG_LL
1698 help
1699 Say Y here if you want to have an early console using the
1700 kernel low-level debugging functions. Add earlyprintk to your
1701 kernel parameters to enable this console.
1702
1703config ARM_KPROBES_TEST
1704 tristate "Kprobes test module"
1705 depends on KPROBES && MODULES
1706 help
1707 Perform tests of kprobes API and instruction set simulation.
1708
1709config PID_IN_CONTEXTIDR
1710 bool "Write the current PID to the CONTEXTIDR register"
1711 depends on CPU_COPY_V6
1712 help
1713 Enabling this option causes the kernel to write the current PID to
1714 the PROCID field of the CONTEXTIDR register, at the expense of some
1715 additional instructions during context switch. Say Y here only if you
1716 are planning to use hardware trace tools with this kernel.
1717
1718config DEBUG_SET_MODULE_RONX
1719 bool "Set loadable kernel module data as NX and text as RO"
1720 depends on MODULES && MMU
1721 ---help---
1722 This option helps catch unintended modifications to loadable
1723 kernel module's text and read-only data. It also prevents execution
1724 of module data. Such protection may interfere with run-time code
1725 patching and dynamic kernel tracing - and they might also protect
1726 against certain classes of kernel exploits.
1727 If in doubt, say "N".
1728
1729source "drivers/hwtracing/coresight/Kconfig"
1730
1731endmenu