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Commit | Line | Data |
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1da177e4 LT |
1 | menu "Kernel hacking" |
2 | ||
3 | source "lib/Kconfig.debug" | |
4 | ||
087aaffc NP |
5 | config 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 | ||
adf8b37b | 19 | # RMK wants arm kernels compiled with frame pointers or stack unwinding. |
1da177e4 LT |
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 ;). | |
23 | config FRAME_POINTER | |
24 | bool | |
16c79651 | 25 | depends on !THUMB2_KERNEL |
0e341af8 | 26 | default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER |
1da177e4 LT |
27 | help |
28 | If you say N here, the resulting kernel will be slightly smaller and | |
adf8b37b CM |
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 | ||
33 | config ARM_UNWIND | |
4a50bfe3 | 34 | bool "Enable stack unwinding support (EXPERIMENTAL)" |
d6f94fa0 | 35 | depends on AEABI |
adf8b37b CM |
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. | |
1da177e4 | 43 | |
09bfafac RV |
44 | config OLD_MCOUNT |
45 | bool | |
46 | depends on FUNCTION_TRACER && FRAME_POINTER | |
47 | default y | |
48 | ||
1da177e4 LT |
49 | config 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 | ||
1da177e4 LT |
66 | # These options are only for real kernel hackers who want to get their hands dirty. |
67 | config DEBUG_LL | |
4f5ef922 | 68 | bool "Kernel low-level debugging functions (read help!)" |
1da177e4 LT |
69 | depends on DEBUG_KERNEL |
70 | help | |
35efb606 | 71 | Say Y here to include definitions of printascii, printch, printhex |
1da177e4 LT |
72 | in the kernel. This is helpful if you are debugging code that |
73 | executes before the console is initialized. | |
74 | ||
4f5ef922 WD |
75 | Note that selecting this option will limit the kernel to a single |
76 | UART definition, as specified below. Attempting to boot the kernel | |
77 | image on a different platform *will not work*, so this option should | |
78 | not be enabled for kernels that are intended to be portable. | |
79 | ||
17916b28 WD |
80 | choice |
81 | prompt "Kernel low-level debugging port" | |
82 | depends on DEBUG_LL | |
83 | ||
13079a73 JCPV |
84 | config AT91_DEBUG_LL_DBGU0 |
85 | bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl" | |
86 | depends on HAVE_AT91_DBGU0 | |
87 | ||
88 | config AT91_DEBUG_LL_DBGU1 | |
9918ceaf | 89 | bool "Kernel low-level debugging on 9263 and 9g45" |
13079a73 JCPV |
90 | depends on HAVE_AT91_DBGU1 |
91 | ||
f1ac922d SW |
92 | config DEBUG_BCM2835 |
93 | bool "Kernel low-level debugging on BCM2835 PL011 UART" | |
94 | depends on ARCH_BCM2835 | |
95 | ||
164acf96 SB |
96 | config DEBUG_CLPS711X_UART1 |
97 | bool "Kernel low-level debugging messages via UART1" | |
98 | depends on ARCH_CLPS711X | |
99 | help | |
100 | Say Y here if you want the debug print routines to direct | |
101 | their output to the first serial port on these devices. | |
17916b28 WD |
102 | |
103 | config DEBUG_CLPS711X_UART2 | |
104 | bool "Kernel low-level debugging messages via UART2" | |
105 | depends on ARCH_CLPS711X | |
106 | help | |
107 | Say Y here if you want the debug print routines to direct | |
108 | their output to the second serial port on these devices. | |
17916b28 | 109 | |
29c9b7be AB |
110 | config DEBUG_CNS3XXX |
111 | bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx" | |
112 | depends on ARCH_CNS3XXX | |
113 | help | |
114 | Say Y here if you want the debug print routines to direct | |
115 | their output to the CNS3xxx UART0. | |
116 | ||
477099f1 UKK |
117 | config DEBUG_DAVINCI_DA8XX_UART1 |
118 | bool "Kernel low-level debugging on DaVinci DA8XX using UART1" | |
119 | depends on ARCH_DAVINCI_DA8XX | |
120 | help | |
121 | Say Y here if you want the debug print routines to direct | |
122 | their output to UART1 serial port on DaVinci DA8XX devices. | |
123 | ||
124 | config DEBUG_DAVINCI_DA8XX_UART2 | |
125 | bool "Kernel low-level debugging on DaVinci DA8XX using UART2" | |
126 | depends on ARCH_DAVINCI_DA8XX | |
127 | help | |
128 | Say Y here if you want the debug print routines to direct | |
129 | their output to UART2 serial port on DaVinci DA8XX devices. | |
130 | ||
131 | config DEBUG_DAVINCI_DMx_UART0 | |
132 | bool "Kernel low-level debugging on DaVinci DMx using UART0" | |
133 | depends on ARCH_DAVINCI_DMx | |
134 | help | |
135 | Say Y here if you want the debug print routines to direct | |
136 | their output to UART0 serial port on DaVinci DMx devices. | |
137 | ||
138 | config DEBUG_DAVINCI_TNETV107X_UART1 | |
139 | bool "Kernel low-level debugging on DaVinci TNETV107x using UART1" | |
140 | depends on ARCH_DAVINCI_TNETV107X | |
141 | help | |
142 | Say Y here if you want the debug print routines to direct | |
143 | their output to UART1 serial port on DaVinci TNETV107X | |
144 | devices. | |
145 | ||
aaf5e0be NB |
146 | config DEBUG_ZYNQ_UART0 |
147 | bool "Kernel low-level debugging on Xilinx Zynq using UART0" | |
148 | depends on ARCH_ZYNQ | |
149 | help | |
150 | Say Y here if you want the debug print routines to direct | |
151 | their output to UART0 on the Zynq platform. | |
152 | ||
153 | config DEBUG_ZYNQ_UART1 | |
154 | bool "Kernel low-level debugging on Xilinx Zynq using UART1" | |
155 | depends on ARCH_ZYNQ | |
156 | help | |
157 | Say Y here if you want the debug print routines to direct | |
158 | their output to UART1 on the Zynq platform. | |
159 | ||
160 | If you have a ZC702 board and want early boot messages to | |
161 | appear on the USB serial adaptor, select this option. | |
162 | ||
e76f4750 RK |
163 | config DEBUG_DC21285_PORT |
164 | bool "Kernel low-level debugging messages via footbridge serial port" | |
165 | depends on FOOTBRIDGE | |
166 | help | |
167 | Say Y here if you want the debug print routines to direct | |
168 | their output to the serial port in the DC21285 (Footbridge). | |
169 | ||
170 | config DEBUG_FOOTBRIDGE_COM1 | |
171 | bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" | |
172 | depends on FOOTBRIDGE | |
173 | help | |
174 | Say Y here if you want the debug print routines to direct | |
175 | their output to the 8250 at PCI COM1. | |
176 | ||
220e6cf7 RH |
177 | config DEBUG_HIGHBANK_UART |
178 | bool "Kernel low-level debugging messages via Highbank UART" | |
179 | depends on ARCH_HIGHBANK | |
180 | help | |
181 | Say Y here if you want the debug print routines to direct | |
182 | their output to the UART on Highbank based devices. | |
183 | ||
f350b861 SG |
184 | config DEBUG_IMX1_UART |
185 | bool "i.MX1 Debug UART" | |
186 | depends on SOC_IMX1 | |
187 | help | |
188 | Say Y here if you want kernel low-level debugging support | |
189 | on i.MX1. | |
190 | ||
191 | config DEBUG_IMX23_UART | |
192 | bool "i.MX23 Debug UART" | |
193 | depends on SOC_IMX23 | |
194 | help | |
195 | Say Y here if you want kernel low-level debugging support | |
196 | on i.MX23. | |
197 | ||
198 | config DEBUG_IMX25_UART | |
199 | bool "i.MX25 Debug UART" | |
200 | depends on SOC_IMX25 | |
201 | help | |
202 | Say Y here if you want kernel low-level debugging support | |
203 | on i.MX25. | |
204 | ||
205 | config DEBUG_IMX21_IMX27_UART | |
206 | bool "i.MX21 and i.MX27 Debug UART" | |
207 | depends on SOC_IMX21 || SOC_IMX27 | |
208 | help | |
209 | Say Y here if you want kernel low-level debugging support | |
210 | on i.MX21 or i.MX27. | |
211 | ||
212 | config DEBUG_IMX28_UART | |
213 | bool "i.MX28 Debug UART" | |
214 | depends on SOC_IMX28 | |
215 | help | |
216 | Say Y here if you want kernel low-level debugging support | |
217 | on i.MX28. | |
218 | ||
4ad625d4 SG |
219 | config DEBUG_IMX31_UART |
220 | bool "i.MX31 Debug UART" | |
221 | depends on SOC_IMX31 | |
f350b861 SG |
222 | help |
223 | Say Y here if you want kernel low-level debugging support | |
4ad625d4 SG |
224 | on i.MX31. |
225 | ||
226 | config DEBUG_IMX35_UART | |
227 | bool "i.MX35 Debug UART" | |
228 | depends on SOC_IMX35 | |
229 | help | |
230 | Say Y here if you want kernel low-level debugging support | |
231 | on i.MX35. | |
f350b861 SG |
232 | |
233 | config DEBUG_IMX51_UART | |
234 | bool "i.MX51 Debug UART" | |
235 | depends on SOC_IMX51 | |
236 | help | |
237 | Say Y here if you want kernel low-level debugging support | |
238 | on i.MX51. | |
239 | ||
7356420c FE |
240 | config DEBUG_IMX53_UART |
241 | bool "i.MX53 Debug UART" | |
242 | depends on SOC_IMX53 | |
f350b861 SG |
243 | help |
244 | Say Y here if you want kernel low-level debugging support | |
7356420c | 245 | on i.MX53. |
f350b861 | 246 | |
49c9e60e | 247 | config DEBUG_IMX6Q_UART |
3c03a2fe | 248 | bool "i.MX6Q/DL Debug UART" |
785d7fab DB |
249 | depends on SOC_IMX6Q |
250 | help | |
251 | Say Y here if you want kernel low-level debugging support | |
3c03a2fe | 252 | on i.MX6Q/DL. |
bac89d75 | 253 | |
34e8a16b SG |
254 | config DEBUG_IMX6SL_UART |
255 | bool "i.MX6SL Debug UART" | |
256 | depends on SOC_IMX6SL | |
257 | help | |
258 | Say Y here if you want kernel low-level debugging support | |
259 | on i.MX6SL. | |
260 | ||
828989ad SS |
261 | config DEBUG_KEYSTONE_UART0 |
262 | bool "Kernel low-level debugging on KEYSTONE2 using UART0" | |
263 | depends on ARCH_KEYSTONE | |
264 | help | |
265 | Say Y here if you want the debug print routines to direct | |
266 | their output to UART0 serial port on KEYSTONE2 devices. | |
267 | ||
268 | config DEBUG_KEYSTONE_UART1 | |
269 | bool "Kernel low-level debugging on KEYSTONE2 using UART1" | |
270 | depends on ARCH_KEYSTONE | |
271 | help | |
272 | Say Y here if you want the debug print routines to direct | |
273 | their output to UART1 serial port on KEYSTONE2 devices. | |
274 | ||
fa4cd2a8 HZ |
275 | config DEBUG_MMP_UART2 |
276 | bool "Kernel low-level debugging message via MMP UART2" | |
277 | depends on ARCH_MMP | |
278 | help | |
279 | Say Y here if you want kernel low-level debugging support | |
280 | on MMP UART2. | |
281 | ||
282 | config DEBUG_MMP_UART3 | |
283 | bool "Kernel low-level debugging message via MMP UART3" | |
284 | depends on ARCH_MMP | |
285 | help | |
286 | Say Y here if you want kernel low-level debugging support | |
287 | on MMP UART3. | |
288 | ||
e76f4750 RK |
289 | config DEBUG_MSM_UART1 |
290 | bool "Kernel low-level debugging messages via MSM UART1" | |
291 | depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 | |
952aeeb2 WD |
292 | help |
293 | Say Y here if you want the debug print routines to direct | |
e76f4750 | 294 | their output to the first serial port on MSM devices. |
952aeeb2 | 295 | |
e76f4750 RK |
296 | config DEBUG_MSM_UART2 |
297 | bool "Kernel low-level debugging messages via MSM UART2" | |
298 | depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 | |
952aeeb2 WD |
299 | help |
300 | Say Y here if you want the debug print routines to direct | |
e76f4750 | 301 | their output to the second serial port on MSM devices. |
952aeeb2 | 302 | |
e76f4750 RK |
303 | config DEBUG_MSM_UART3 |
304 | bool "Kernel low-level debugging messages via MSM UART3" | |
305 | depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 | |
306 | help | |
307 | Say Y here if you want the debug print routines to direct | |
308 | their output to the third serial port on MSM devices. | |
952aeeb2 | 309 | |
e76f4750 RK |
310 | config DEBUG_MSM8660_UART |
311 | bool "Kernel low-level debugging messages via MSM 8660 UART" | |
312 | depends on ARCH_MSM8X60 | |
313 | select MSM_HAS_DEBUG_UART_HS | |
952aeeb2 WD |
314 | help |
315 | Say Y here if you want the debug print routines to direct | |
e76f4750 | 316 | their output to the serial port on MSM 8660 devices. |
952aeeb2 | 317 | |
e76f4750 RK |
318 | config DEBUG_MSM8960_UART |
319 | bool "Kernel low-level debugging messages via MSM 8960 UART" | |
320 | depends on ARCH_MSM8960 | |
321 | select MSM_HAS_DEBUG_UART_HS | |
322 | help | |
323 | Say Y here if you want the debug print routines to direct | |
324 | their output to the serial port on MSM 8960 devices. | |
952aeeb2 | 325 | |
bfd5af99 | 326 | config DEBUG_MVEBU_UART |
c2804cd6 | 327 | bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)" |
bfd5af99 RH |
328 | depends on ARCH_MVEBU |
329 | help | |
330 | Say Y here if you want kernel low-level debugging support | |
331 | on MVEBU based platforms. | |
332 | ||
c2804cd6 TP |
333 | This option should be used with the old bootloaders |
334 | that left the internal registers mapped at | |
335 | 0xd0000000. As of today, this is the case on | |
336 | platforms such as the Globalscale Mirabox or the | |
337 | Plathome OpenBlocks AX3, when using the original | |
338 | bootloader. | |
339 | ||
340 | If the wrong DEBUG_MVEBU_UART* option is selected, | |
341 | when u-boot hands over to the kernel, the system | |
342 | silently crashes, with no serial output at all. | |
343 | ||
344 | config DEBUG_MVEBU_UART_ALTERNATE | |
345 | bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)" | |
346 | depends on ARCH_MVEBU | |
347 | help | |
348 | Say Y here if you want kernel low-level debugging support | |
349 | on MVEBU based platforms. | |
350 | ||
351 | This option should be used with the new bootloaders | |
352 | that remap the internal registers at 0xf1000000. | |
353 | ||
354 | If the wrong DEBUG_MVEBU_UART* option is selected, | |
355 | when u-boot hands over to the kernel, the system | |
356 | silently crashes, with no serial output at all. | |
357 | ||
266c3479 LW |
358 | config DEBUG_NOMADIK_UART |
359 | bool "Kernel low-level debugging messages via NOMADIK UART" | |
360 | depends on ARCH_NOMADIK | |
361 | help | |
362 | Say Y here if you want kernel low-level debugging support | |
363 | on NOMADIK based platforms. | |
364 | ||
9851ca57 DT |
365 | config DEBUG_NSPIRE_CLASSIC_UART |
366 | bool "Kernel low-level debugging via TI-NSPIRE 8250 UART" | |
367 | depends on ARCH_NSPIRE | |
368 | help | |
369 | Say Y here if you want kernel low-level debugging support | |
370 | on TI-NSPIRE classic models. | |
371 | ||
372 | config DEBUG_NSPIRE_CX_UART | |
373 | bool "Kernel low-level debugging via TI-NSPIRE PL011 UART" | |
374 | depends on ARCH_NSPIRE | |
375 | help | |
376 | Say Y here if you want kernel low-level debugging support | |
377 | on TI-NSPIRE CX models. | |
378 | ||
cce278d2 RK |
379 | config DEBUG_OMAP2UART1 |
380 | bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" | |
808b7e07 | 381 | depends on ARCH_OMAP2PLUS |
cce278d2 | 382 | select DEBUG_OMAP2PLUS_UART |
808b7e07 | 383 | help |
cce278d2 RK |
384 | This covers at least h4, 2430sdp, 3430sdp, 3630sdp, |
385 | omap3 torpedo and 3530 lv som. | |
386 | ||
387 | config DEBUG_OMAP2UART2 | |
388 | bool "Kernel low-level debugging messages via OMAP2/3/4 UART2" | |
389 | depends on ARCH_OMAP2PLUS | |
390 | select DEBUG_OMAP2PLUS_UART | |
391 | ||
392 | config DEBUG_OMAP2UART3 | |
393 | bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)" | |
394 | depends on ARCH_OMAP2PLUS | |
395 | select DEBUG_OMAP2PLUS_UART | |
396 | ||
397 | config DEBUG_OMAP3UART3 | |
398 | bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)" | |
399 | depends on ARCH_OMAP2PLUS | |
400 | select DEBUG_OMAP2PLUS_UART | |
401 | help | |
402 | This covers at least cm_t3x, beagle, crane, devkit8000, | |
403 | igep00x0, ldp, n900, n9(50), pandora, overo, touchbook, | |
404 | and 3517evm. | |
405 | ||
406 | config DEBUG_OMAP4UART3 | |
407 | bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)" | |
408 | depends on ARCH_OMAP2PLUS | |
409 | select DEBUG_OMAP2PLUS_UART | |
410 | ||
411 | config DEBUG_OMAP3UART4 | |
412 | bool "Kernel low-level debugging messages via OMAP36XX UART4" | |
413 | depends on ARCH_OMAP2PLUS | |
414 | select DEBUG_OMAP2PLUS_UART | |
415 | ||
416 | config DEBUG_OMAP4UART4 | |
417 | bool "Kernel low-level debugging messages via OMAP4/5 UART4" | |
418 | depends on ARCH_OMAP2PLUS | |
419 | select DEBUG_OMAP2PLUS_UART | |
420 | ||
421 | config DEBUG_TI81XXUART1 | |
422 | bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)" | |
423 | depends on ARCH_OMAP2PLUS | |
424 | select DEBUG_OMAP2PLUS_UART | |
425 | ||
426 | config DEBUG_TI81XXUART2 | |
427 | bool "Kernel low-level debugging messages via TI81XX UART2" | |
428 | depends on ARCH_OMAP2PLUS | |
429 | select DEBUG_OMAP2PLUS_UART | |
430 | ||
431 | config DEBUG_TI81XXUART3 | |
432 | bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)" | |
433 | depends on ARCH_OMAP2PLUS | |
434 | select DEBUG_OMAP2PLUS_UART | |
435 | ||
436 | config DEBUG_AM33XXUART1 | |
437 | bool "Kernel low-level debugging messages via AM33XX UART1" | |
438 | depends on ARCH_OMAP2PLUS | |
439 | select DEBUG_OMAP2PLUS_UART | |
440 | ||
441 | config DEBUG_ZOOM_UART | |
442 | bool "Kernel low-level debugging messages via Zoom2/3 UART" | |
443 | depends on ARCH_OMAP2PLUS | |
444 | select DEBUG_OMAP2PLUS_UART | |
808b7e07 | 445 | |
59bba2a9 RH |
446 | config DEBUG_PICOXCELL_UART |
447 | depends on ARCH_PICOXCELL | |
448 | bool "Use PicoXcell UART for low-level debug" | |
449 | help | |
450 | Say Y here if you want kernel low-level debugging support | |
451 | on PicoXcell based platforms. | |
452 | ||
0a43cd3b HZ |
453 | config DEBUG_PXA_UART1 |
454 | depends on ARCH_PXA | |
455 | bool "Use PXA UART1 for low-level debug" | |
456 | help | |
457 | Say Y here if you want kernel low-level debugging support | |
458 | on PXA UART1. | |
459 | ||
1285b8f8 WD |
460 | config DEBUG_REALVIEW_STD_PORT |
461 | bool "RealView Default UART" | |
462 | depends on ARCH_REALVIEW | |
463 | help | |
464 | Say Y here if you want the debug print routines to direct | |
465 | their output to the serial port on RealView EB, PB11MP, PBA8 | |
466 | and PBX platforms. | |
467 | ||
468 | config DEBUG_REALVIEW_PB1176_PORT | |
469 | bool "RealView PB1176 UART" | |
470 | depends on MACH_REALVIEW_PB1176 | |
471 | help | |
472 | Say Y here if you want the debug print routines to direct | |
473 | their output to the standard serial port on the RealView | |
474 | PB1176 platform. | |
475 | ||
cce278d2 RK |
476 | config DEBUG_RK29_UART0 |
477 | bool "Kernel low-level debugging messages via Rockchip RK29 UART0" | |
478 | depends on ARCH_ROCKCHIP | |
479 | select DEBUG_ROCKCHIP_UART | |
480 | help | |
481 | Say Y here if you want kernel low-level debugging support | |
482 | on Rockchip based platforms. | |
483 | ||
484 | config DEBUG_RK29_UART1 | |
485 | bool "Kernel low-level debugging messages via Rockchip RK29 UART1" | |
486 | depends on ARCH_ROCKCHIP | |
487 | select DEBUG_ROCKCHIP_UART | |
488 | help | |
489 | Say Y here if you want kernel low-level debugging support | |
490 | on Rockchip based platforms. | |
491 | ||
492 | config DEBUG_RK29_UART2 | |
493 | bool "Kernel low-level debugging messages via Rockchip RK29 UART2" | |
494 | depends on ARCH_ROCKCHIP | |
495 | select DEBUG_ROCKCHIP_UART | |
496 | help | |
497 | Say Y here if you want kernel low-level debugging support | |
498 | on Rockchip based platforms. | |
499 | ||
500 | config DEBUG_RK3X_UART0 | |
501 | bool "Kernel low-level debugging messages via Rockchip RK3X UART0" | |
502 | depends on ARCH_ROCKCHIP | |
503 | select DEBUG_ROCKCHIP_UART | |
504 | help | |
505 | Say Y here if you want kernel low-level debugging support | |
506 | on Rockchip based platforms. | |
507 | ||
508 | config DEBUG_RK3X_UART1 | |
509 | bool "Kernel low-level debugging messages via Rockchip RK3X UART1" | |
38bd6892 | 510 | depends on ARCH_ROCKCHIP |
cce278d2 RK |
511 | select DEBUG_ROCKCHIP_UART |
512 | help | |
513 | Say Y here if you want kernel low-level debugging support | |
514 | on Rockchip based platforms. | |
515 | ||
516 | config DEBUG_RK3X_UART2 | |
517 | bool "Kernel low-level debugging messages via Rockchip RK3X UART2" | |
518 | depends on ARCH_ROCKCHIP | |
519 | select DEBUG_ROCKCHIP_UART | |
520 | help | |
521 | Say Y here if you want kernel low-level debugging support | |
522 | on Rockchip based platforms. | |
523 | ||
524 | config DEBUG_RK3X_UART3 | |
525 | bool "Kernel low-level debugging messages via Rockchip RK3X UART3" | |
526 | depends on ARCH_ROCKCHIP | |
527 | select DEBUG_ROCKCHIP_UART | |
38bd6892 HS |
528 | help |
529 | Say Y here if you want kernel low-level debugging support | |
530 | on Rockchip based platforms. | |
531 | ||
e76f4750 RK |
532 | config DEBUG_S3C_UART0 |
533 | depends on PLAT_SAMSUNG | |
a2e40710 | 534 | select DEBUG_EXYNOS_UART if ARCH_EXYNOS |
e76f4750 | 535 | bool "Use S3C UART 0 for low-level debug" |
650e3f0d SB |
536 | help |
537 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
538 | their output to UART 0. The port must have been initialised |
539 | by the boot-loader before use. | |
650e3f0d | 540 | |
e76f4750 RK |
541 | The uncompressor code port configuration is now handled |
542 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
543 | ||
544 | config DEBUG_S3C_UART1 | |
545 | depends on PLAT_SAMSUNG | |
a2e40710 | 546 | select DEBUG_EXYNOS_UART if ARCH_EXYNOS |
e76f4750 | 547 | bool "Use S3C UART 1 for low-level debug" |
650e3f0d SB |
548 | help |
549 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
550 | their output to UART 1. The port must have been initialised |
551 | by the boot-loader before use. | |
650e3f0d | 552 | |
e76f4750 RK |
553 | The uncompressor code port configuration is now handled |
554 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
555 | ||
556 | config DEBUG_S3C_UART2 | |
557 | depends on PLAT_SAMSUNG | |
a2e40710 | 558 | select DEBUG_EXYNOS_UART if ARCH_EXYNOS |
e76f4750 | 559 | bool "Use S3C UART 2 for low-level debug" |
650e3f0d SB |
560 | help |
561 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
562 | their output to UART 2. The port must have been initialised |
563 | by the boot-loader before use. | |
650e3f0d | 564 | |
e76f4750 RK |
565 | The uncompressor code port configuration is now handled |
566 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
567 | ||
5fa23dde OJ |
568 | config DEBUG_S3C_UART3 |
569 | depends on PLAT_SAMSUNG && ARCH_EXYNOS | |
a2e40710 | 570 | select DEBUG_EXYNOS_UART |
5fa23dde OJ |
571 | bool "Use S3C UART 3 for low-level debug" |
572 | help | |
573 | Say Y here if you want the debug print routines to direct | |
574 | their output to UART 3. The port must have been initialised | |
575 | by the boot-loader before use. | |
576 | ||
577 | The uncompressor code port configuration is now handled | |
578 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
e76f4750 | 579 | |
6111bf7c RH |
580 | config DEBUG_SOCFPGA_UART |
581 | depends on ARCH_SOCFPGA | |
582 | bool "Use SOCFPGA UART for low-level debug" | |
583 | help | |
584 | Say Y here if you want kernel low-level debugging support | |
585 | on SOCFPGA based platforms. | |
586 | ||
aa25115a SR |
587 | config DEBUG_SUNXI_UART0 |
588 | bool "Kernel low-level debugging messages via sunXi UART0" | |
589 | depends on ARCH_SUNXI | |
590 | help | |
591 | Say Y here if you want kernel low-level debugging support | |
592 | on Allwinner A1X based platforms on the UART0. | |
593 | ||
cb84fa18 MR |
594 | config DEBUG_SUNXI_UART1 |
595 | bool "Kernel low-level debugging messages via sunXi UART1" | |
596 | depends on ARCH_SUNXI | |
597 | help | |
598 | Say Y here if you want kernel low-level debugging support | |
599 | on Allwinner A1X based platforms on the UART1. | |
600 | ||
cce278d2 RK |
601 | config TEGRA_DEBUG_UART_AUTO_ODMDATA |
602 | bool "Kernel low-level debugging messages via Tegra UART via ODMDATA" | |
46067803 | 603 | depends on ARCH_TEGRA |
cce278d2 RK |
604 | select DEBUG_TEGRA_UART |
605 | help | |
606 | Automatically determines which UART to use for low-level | |
607 | debug based on the ODMDATA value. This value is part of | |
608 | the BCT, and is written to the boot memory device using | |
609 | nvflash, or other flashing tool. When bits 19:18 are 3, | |
610 | then bits 17:15 indicate which UART to use; 0/1/2/3/4 | |
611 | are UART A/B/C/D/E. | |
612 | ||
613 | config TEGRA_DEBUG_UARTA | |
614 | bool "Kernel low-level debugging messages via Tegra UART A" | |
615 | depends on ARCH_TEGRA | |
616 | select DEBUG_TEGRA_UART | |
617 | help | |
618 | Say Y here if you want kernel low-level debugging support | |
619 | on Tegra based platforms. | |
620 | ||
621 | config TEGRA_DEBUG_UARTB | |
622 | bool "Kernel low-level debugging messages via Tegra UART B" | |
623 | depends on ARCH_TEGRA | |
624 | select DEBUG_TEGRA_UART | |
625 | help | |
626 | Say Y here if you want kernel low-level debugging support | |
627 | on Tegra based platforms. | |
628 | ||
629 | config TEGRA_DEBUG_UARTC | |
630 | bool "Kernel low-level debugging messages via Tegra UART C" | |
631 | depends on ARCH_TEGRA | |
632 | select DEBUG_TEGRA_UART | |
633 | help | |
634 | Say Y here if you want kernel low-level debugging support | |
635 | on Tegra based platforms. | |
636 | ||
637 | config TEGRA_DEBUG_UARTD | |
638 | bool "Kernel low-level debugging messages via Tegra UART D" | |
639 | depends on ARCH_TEGRA | |
640 | select DEBUG_TEGRA_UART | |
641 | help | |
642 | Say Y here if you want kernel low-level debugging support | |
643 | on Tegra based platforms. | |
644 | ||
645 | config TEGRA_DEBUG_UARTE | |
646 | bool "Kernel low-level debugging messages via Tegra UART E" | |
647 | depends on ARCH_TEGRA | |
648 | select DEBUG_TEGRA_UART | |
46067803 SW |
649 | help |
650 | Say Y here if you want kernel low-level debugging support | |
651 | on Tegra based platforms. | |
652 | ||
7f46a107 BS |
653 | config DEBUG_SIRFPRIMA2_UART1 |
654 | bool "Kernel low-level debugging messages via SiRFprimaII UART1" | |
655 | depends on ARCH_PRIMA2 | |
656 | help | |
657 | Say Y here if you want the debug print routines to direct | |
658 | their output to the uart1 port on SiRFprimaII devices. | |
659 | ||
660 | config DEBUG_SIRFMARCO_UART1 | |
661 | bool "Kernel low-level debugging messages via SiRFmarco UART1" | |
662 | depends on ARCH_MARCO | |
663 | help | |
664 | Say Y here if you want the debug print routines to direct | |
665 | their output to the uart1 port on SiRFmarco devices. | |
666 | ||
cce278d2 RK |
667 | config STIH41X_DEBUG_ASC2 |
668 | bool "Use StiH415/416 ASC2 UART for low-level debug" | |
669 | depends on ARCH_STI | |
670 | select DEBUG_STI_UART | |
671 | help | |
672 | Say Y here if you want kernel low-level debugging support | |
673 | on STiH415/416 based platforms like b2000, which has | |
674 | default UART wired up to ASC2. | |
675 | ||
676 | If unsure, say N. | |
677 | ||
678 | config STIH41X_DEBUG_SBC_ASC1 | |
679 | bool "Use StiH415/416 SBC ASC1 UART for low-level debug" | |
5562b800 | 680 | depends on ARCH_STI |
cce278d2 | 681 | select DEBUG_STI_UART |
5562b800 AB |
682 | help |
683 | Say Y here if you want kernel low-level debugging support | |
cce278d2 RK |
684 | on STiH415/416 based platforms like b2020. which has |
685 | default UART wired up to SBC ASC1. | |
5562b800 AB |
686 | |
687 | If unsure, say N. | |
688 | ||
dd324da7 LW |
689 | config DEBUG_U300_UART |
690 | bool "Kernel low-level debugging messages via U300 UART0" | |
691 | depends on ARCH_U300 | |
692 | help | |
693 | Say Y here if you want the debug print routines to direct | |
694 | their output to the uart port on U300 devices. | |
695 | ||
f87b95dd LW |
696 | config DEBUG_UX500_UART |
697 | depends on ARCH_U8500 | |
698 | bool "Use Ux500 UART for low-level debug" | |
699 | help | |
700 | Say Y here if you want kernel low-level debugging support | |
701 | on Ux500 based platforms. | |
702 | ||
1b820eaf PM |
703 | config DEBUG_VEXPRESS_UART0_DETECT |
704 | bool "Autodetect UART0 on Versatile Express Cortex-A core tiles" | |
705 | depends on ARCH_VEXPRESS && CPU_CP15_MMU | |
706 | help | |
707 | This option enables a simple heuristic which tries to determine | |
708 | the motherboard's memory map variant (original or RS1) and then | |
709 | choose the relevant UART0 base address. | |
710 | ||
711 | Note that this will only work with standard A-class core tiles, | |
712 | and may fail with non-standard SMM or custom software models. | |
713 | ||
714 | config DEBUG_VEXPRESS_UART0_CA9 | |
715 | bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)" | |
716 | depends on ARCH_VEXPRESS | |
717 | help | |
718 | This option selects UART0 at 0x10009000. Except for custom models, | |
719 | this applies only to the V2P-CA9 tile. | |
720 | ||
721 | config DEBUG_VEXPRESS_UART0_RS1 | |
722 | bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)" | |
723 | depends on ARCH_VEXPRESS | |
724 | help | |
725 | This option selects UART0 at 0x1c090000. This applies to most | |
726 | of the tiles using the RS1 memory map, including all new A-class | |
727 | core tiles, FPGA-based SMMs and software models. | |
728 | ||
ed18bdc8 JA |
729 | config DEBUG_VEXPRESS_UART0_CRX |
730 | bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)" | |
731 | depends on ARCH_VEXPRESS && !MMU | |
732 | help | |
733 | This option selects UART0 at 0xb0090000. This is appropriate for | |
734 | Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7 | |
735 | ||
b61a2722 TP |
736 | config DEBUG_VT8500_UART0 |
737 | bool "Use UART0 on VIA/Wondermedia SoCs" | |
738 | depends on ARCH_VT8500 | |
739 | help | |
740 | This option selects UART0 on VIA/Wondermedia System-on-a-chip | |
741 | devices, including VT8500, WM8505, WM8650 and WM8850. | |
742 | ||
e76f4750 RK |
743 | config DEBUG_LL_UART_NONE |
744 | bool "No low-level debugging UART" | |
387798b3 | 745 | depends on !ARCH_MULTIPLATFORM |
a3d3ef9d | 746 | help |
e76f4750 | 747 | Say Y here if your platform doesn't provide a UART option |
730cc26f | 748 | above. This relies on your platform choosing the right UART |
e76f4750 RK |
749 | definition internally in order for low-level debugging to |
750 | work. | |
a3d3ef9d | 751 | |
e76f4750 RK |
752 | config DEBUG_ICEDCC |
753 | bool "Kernel low-level debugging via EmbeddedICE DCC channel" | |
a3d3ef9d SB |
754 | help |
755 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
756 | their output to the EmbeddedICE macrocell's DCC channel using |
757 | co-processor 14. This is known to work on the ARM9 style ICE | |
758 | channel and on the XScale with the PEEDI. | |
759 | ||
760 | Note that the system will appear to hang during boot if there | |
761 | is nothing connected to read from the DCC. | |
a3d3ef9d | 762 | |
b0df8986 | 763 | config DEBUG_SEMIHOSTING |
62194bda | 764 | bool "Kernel low-level debug output via semihosting I/O" |
650e3f0d | 765 | help |
b0df8986 RK |
766 | Semihosting enables code running on an ARM target to use |
767 | the I/O facilities on a host debugger/emulator through a | |
62194bda | 768 | simple SVC call. The host debugger or emulator must have |
b0df8986 RK |
769 | semihosting enabled for the special svc call to be trapped |
770 | otherwise the kernel will crash. | |
650e3f0d | 771 | |
62194bda | 772 | This is known to work with OpenOCD, as well as |
b0df8986 RK |
773 | ARM's Fast Models, or any other controlling environment |
774 | that implements semihosting. | |
a3d3ef9d | 775 | |
b0df8986 RK |
776 | For more details about semihosting, please see |
777 | chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd. | |
a3d3ef9d | 778 | |
17916b28 WD |
779 | endchoice |
780 | ||
a2e40710 AB |
781 | config DEBUG_EXYNOS_UART |
782 | bool | |
783 | ||
cce278d2 RK |
784 | config DEBUG_OMAP2PLUS_UART |
785 | bool | |
786 | depends on ARCH_OMAP2PLUS | |
787 | ||
f8c95fe6 SG |
788 | config DEBUG_IMX_UART_PORT |
789 | int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \ | |
790 | DEBUG_IMX25_UART || \ | |
791 | DEBUG_IMX21_IMX27_UART || \ | |
792 | DEBUG_IMX31_UART || \ | |
793 | DEBUG_IMX35_UART || \ | |
794 | DEBUG_IMX51_UART || \ | |
0c52db7e | 795 | DEBUG_IMX53_UART || \ |
34e8a16b SG |
796 | DEBUG_IMX6Q_UART || \ |
797 | DEBUG_IMX6SL_UART | |
49c9e60e | 798 | default 1 |
287939a3 | 799 | depends on ARCH_MXC |
49c9e60e SG |
800 | help |
801 | Choose UART port on which kernel low-level debug messages | |
802 | should be output. | |
803 | ||
cce278d2 RK |
804 | config DEBUG_ROCKCHIP_UART |
805 | bool | |
806 | depends on ARCH_ROCKCHIP | |
5026aecf | 807 | |
cce278d2 RK |
808 | config DEBUG_TEGRA_UART |
809 | bool | |
810 | depends on ARCH_TEGRA | |
5026aecf | 811 | |
cce278d2 RK |
812 | config DEBUG_STI_UART |
813 | bool | |
814 | depends on ARCH_STI | |
5026aecf | 815 | |
91a9fec0 RH |
816 | config DEBUG_LL_INCLUDE |
817 | string | |
f1ac922d | 818 | default "debug/bcm2835.S" if DEBUG_BCM2835 |
29c9b7be | 819 | default "debug/cns3xxx.S" if DEBUG_CNS3XXX |
a2e40710 | 820 | default "debug/exynos.S" if DEBUG_EXYNOS_UART |
150a8dcf | 821 | default "debug/highbank.S" if DEBUG_HIGHBANK_UART |
91a9fec0 | 822 | default "debug/icedcc.S" if DEBUG_ICEDCC |
6dde5ac5 SG |
823 | default "debug/imx.S" if DEBUG_IMX1_UART || \ |
824 | DEBUG_IMX25_UART || \ | |
825 | DEBUG_IMX21_IMX27_UART || \ | |
4ad625d4 SG |
826 | DEBUG_IMX31_UART || \ |
827 | DEBUG_IMX35_UART || \ | |
6dde5ac5 | 828 | DEBUG_IMX51_UART || \ |
7356420c | 829 | DEBUG_IMX53_UART ||\ |
34e8a16b SG |
830 | DEBUG_IMX6Q_UART || \ |
831 | DEBUG_IMX6SL_UART | |
828989ad SS |
832 | default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \ |
833 | DEBUG_KEYSTONE_UART1 | |
c2804cd6 TP |
834 | default "debug/mvebu.S" if DEBUG_MVEBU_UART || \ |
835 | DEBUG_MVEBU_UART_ALTERNATE | |
e91411b4 | 836 | default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART |
266c3479 | 837 | default "debug/nomadik.S" if DEBUG_NOMADIK_UART |
42daabf6 LT |
838 | default "debug/nspire.S" if DEBUG_NSPIRE_CX_UART || \ |
839 | DEBUG_NSPIRE_CLASSIC_UART | |
808b7e07 | 840 | default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART |
59bba2a9 | 841 | default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART |
0a43cd3b HZ |
842 | default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \ |
843 | DEBUG_MMP_UART3 | |
38bd6892 | 844 | default "debug/rockchip.S" if DEBUG_ROCKCHIP_UART |
67bdb287 | 845 | default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 |
6111bf7c | 846 | default "debug/socfpga.S" if DEBUG_SOCFPGA_UART |
5026aecf | 847 | default "debug/sti.S" if DEBUG_STI_UART |
aa25115a | 848 | default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1 |
150a8dcf | 849 | default "debug/tegra.S" if DEBUG_TEGRA_UART |
dd324da7 | 850 | default "debug/u300.S" if DEBUG_U300_UART |
150a8dcf | 851 | default "debug/ux500.S" if DEBUG_UX500_UART |
fa04e4db | 852 | default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \ |
ed18bdc8 JA |
853 | DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1 || \ |
854 | DEBUG_VEXPRESS_UART0_CRX | |
b61a2722 | 855 | default "debug/vt8500.S" if DEBUG_VT8500_UART0 |
385f02b1 | 856 | default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 |
91a9fec0 RH |
857 | default "mach/debug-macro.S" |
858 | ||
3b4af9bc SG |
859 | config DEBUG_UNCOMPRESS |
860 | bool | |
b6992fa9 RK |
861 | depends on ARCH_MULTIPLATFORM |
862 | default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \ | |
3b4af9bc | 863 | !DEBUG_TEGRA_UART |
b6992fa9 RK |
864 | help |
865 | This option influences the normal decompressor output for | |
866 | multiplatform kernels. Normally, multiplatform kernels disable | |
867 | decompressor output because it is not possible to know where to | |
868 | send the decompressor output. | |
869 | ||
870 | When this option is set, the selected DEBUG_LL output method | |
871 | will be re-used for normal decompressor output on multiplatform | |
872 | kernels. | |
873 | ||
3b4af9bc | 874 | |
615967b0 SG |
875 | config UNCOMPRESS_INCLUDE |
876 | string | |
877 | default "debug/uncompress.h" if ARCH_MULTIPLATFORM | |
878 | default "mach/uncompress.h" | |
879 | ||
93fd03a8 CM |
880 | config EARLY_PRINTK |
881 | bool "Early printk" | |
882 | depends on DEBUG_LL | |
883 | help | |
884 | Say Y here if you want to have an early console using the | |
885 | kernel low-level debugging functions. Add earlyprintk to your | |
886 | kernel parameters to enable this console. | |
887 | ||
c5d6c770 AS |
888 | config OC_ETM |
889 | bool "On-chip ETM and ETB" | |
53eebb0d | 890 | depends on ARM_AMBA |
c5d6c770 AS |
891 | help |
892 | Enables the on-chip embedded trace macrocell and embedded trace | |
893 | buffer driver that will allow you to collect traces of the | |
894 | kernel code. | |
895 | ||
4189bc71 JM |
896 | config ARM_KPROBES_TEST |
897 | tristate "Kprobes test module" | |
898 | depends on KPROBES && MODULES | |
899 | help | |
900 | Perform tests of kprobes API and instruction set simulation. | |
901 | ||
575320d6 WD |
902 | config PID_IN_CONTEXTIDR |
903 | bool "Write the current PID to the CONTEXTIDR register" | |
904 | depends on CPU_COPY_V6 | |
905 | help | |
906 | Enabling this option causes the kernel to write the current PID to | |
907 | the PROCID field of the CONTEXTIDR register, at the expense of some | |
908 | additional instructions during context switch. Say Y here only if you | |
909 | are planning to use hardware trace tools with this kernel. | |
910 | ||
1da177e4 | 911 | endmenu |