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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 | |
fa4cd2a8 HZ |
254 | config DEBUG_MMP_UART2 |
255 | bool "Kernel low-level debugging message via MMP UART2" | |
256 | depends on ARCH_MMP | |
257 | help | |
258 | Say Y here if you want kernel low-level debugging support | |
259 | on MMP UART2. | |
260 | ||
261 | config DEBUG_MMP_UART3 | |
262 | bool "Kernel low-level debugging message via MMP UART3" | |
263 | depends on ARCH_MMP | |
264 | help | |
265 | Say Y here if you want kernel low-level debugging support | |
266 | on MMP UART3. | |
267 | ||
e76f4750 RK |
268 | config DEBUG_MSM_UART1 |
269 | bool "Kernel low-level debugging messages via MSM UART1" | |
270 | depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 | |
952aeeb2 WD |
271 | help |
272 | Say Y here if you want the debug print routines to direct | |
e76f4750 | 273 | their output to the first serial port on MSM devices. |
952aeeb2 | 274 | |
e76f4750 RK |
275 | config DEBUG_MSM_UART2 |
276 | bool "Kernel low-level debugging messages via MSM UART2" | |
277 | depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 | |
952aeeb2 WD |
278 | help |
279 | Say Y here if you want the debug print routines to direct | |
e76f4750 | 280 | their output to the second serial port on MSM devices. |
952aeeb2 | 281 | |
e76f4750 RK |
282 | config DEBUG_MSM_UART3 |
283 | bool "Kernel low-level debugging messages via MSM UART3" | |
284 | depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 | |
285 | help | |
286 | Say Y here if you want the debug print routines to direct | |
287 | their output to the third serial port on MSM devices. | |
952aeeb2 | 288 | |
e76f4750 RK |
289 | config DEBUG_MSM8660_UART |
290 | bool "Kernel low-level debugging messages via MSM 8660 UART" | |
291 | depends on ARCH_MSM8X60 | |
292 | select MSM_HAS_DEBUG_UART_HS | |
952aeeb2 WD |
293 | help |
294 | Say Y here if you want the debug print routines to direct | |
e76f4750 | 295 | their output to the serial port on MSM 8660 devices. |
952aeeb2 | 296 | |
e76f4750 RK |
297 | config DEBUG_MSM8960_UART |
298 | bool "Kernel low-level debugging messages via MSM 8960 UART" | |
299 | depends on ARCH_MSM8960 | |
300 | select MSM_HAS_DEBUG_UART_HS | |
301 | help | |
302 | Say Y here if you want the debug print routines to direct | |
303 | their output to the serial port on MSM 8960 devices. | |
952aeeb2 | 304 | |
bfd5af99 RH |
305 | config DEBUG_MVEBU_UART |
306 | bool "Kernel low-level debugging messages via MVEBU UART" | |
307 | depends on ARCH_MVEBU | |
308 | help | |
309 | Say Y here if you want kernel low-level debugging support | |
310 | on MVEBU based platforms. | |
311 | ||
266c3479 LW |
312 | config DEBUG_NOMADIK_UART |
313 | bool "Kernel low-level debugging messages via NOMADIK UART" | |
314 | depends on ARCH_NOMADIK | |
315 | help | |
316 | Say Y here if you want kernel low-level debugging support | |
317 | on NOMADIK based platforms. | |
318 | ||
808b7e07 TL |
319 | config DEBUG_OMAP2PLUS_UART |
320 | bool "Kernel low-level debugging messages via OMAP2PLUS UART" | |
321 | depends on ARCH_OMAP2PLUS | |
322 | help | |
323 | Say Y here if you want kernel low-level debugging support | |
324 | on OMAP2PLUS based platforms. | |
325 | ||
59bba2a9 RH |
326 | config DEBUG_PICOXCELL_UART |
327 | depends on ARCH_PICOXCELL | |
328 | bool "Use PicoXcell UART for low-level debug" | |
329 | help | |
330 | Say Y here if you want kernel low-level debugging support | |
331 | on PicoXcell based platforms. | |
332 | ||
0a43cd3b HZ |
333 | config DEBUG_PXA_UART1 |
334 | depends on ARCH_PXA | |
335 | bool "Use PXA UART1 for low-level debug" | |
336 | help | |
337 | Say Y here if you want kernel low-level debugging support | |
338 | on PXA UART1. | |
339 | ||
1285b8f8 WD |
340 | config DEBUG_REALVIEW_STD_PORT |
341 | bool "RealView Default UART" | |
342 | depends on ARCH_REALVIEW | |
343 | help | |
344 | Say Y here if you want the debug print routines to direct | |
345 | their output to the serial port on RealView EB, PB11MP, PBA8 | |
346 | and PBX platforms. | |
347 | ||
348 | config DEBUG_REALVIEW_PB1176_PORT | |
349 | bool "RealView PB1176 UART" | |
350 | depends on MACH_REALVIEW_PB1176 | |
351 | help | |
352 | Say Y here if you want the debug print routines to direct | |
353 | their output to the standard serial port on the RealView | |
354 | PB1176 platform. | |
355 | ||
e76f4750 RK |
356 | config DEBUG_S3C_UART0 |
357 | depends on PLAT_SAMSUNG | |
a2e40710 | 358 | select DEBUG_EXYNOS_UART if ARCH_EXYNOS |
e76f4750 | 359 | bool "Use S3C UART 0 for low-level debug" |
650e3f0d SB |
360 | help |
361 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
362 | their output to UART 0. The port must have been initialised |
363 | by the boot-loader before use. | |
650e3f0d | 364 | |
e76f4750 RK |
365 | The uncompressor code port configuration is now handled |
366 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
367 | ||
368 | config DEBUG_S3C_UART1 | |
369 | depends on PLAT_SAMSUNG | |
a2e40710 | 370 | select DEBUG_EXYNOS_UART if ARCH_EXYNOS |
e76f4750 | 371 | bool "Use S3C UART 1 for low-level debug" |
650e3f0d SB |
372 | help |
373 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
374 | their output to UART 1. The port must have been initialised |
375 | by the boot-loader before use. | |
650e3f0d | 376 | |
e76f4750 RK |
377 | The uncompressor code port configuration is now handled |
378 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
379 | ||
380 | config DEBUG_S3C_UART2 | |
381 | depends on PLAT_SAMSUNG | |
a2e40710 | 382 | select DEBUG_EXYNOS_UART if ARCH_EXYNOS |
e76f4750 | 383 | bool "Use S3C UART 2 for low-level debug" |
650e3f0d SB |
384 | help |
385 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
386 | their output to UART 2. The port must have been initialised |
387 | by the boot-loader before use. | |
650e3f0d | 388 | |
e76f4750 RK |
389 | The uncompressor code port configuration is now handled |
390 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
391 | ||
5fa23dde OJ |
392 | config DEBUG_S3C_UART3 |
393 | depends on PLAT_SAMSUNG && ARCH_EXYNOS | |
a2e40710 | 394 | select DEBUG_EXYNOS_UART |
5fa23dde OJ |
395 | bool "Use S3C UART 3 for low-level debug" |
396 | help | |
397 | Say Y here if you want the debug print routines to direct | |
398 | their output to UART 3. The port must have been initialised | |
399 | by the boot-loader before use. | |
400 | ||
401 | The uncompressor code port configuration is now handled | |
402 | by CONFIG_S3C_LOWLEVEL_UART_PORT. | |
e76f4750 | 403 | |
6111bf7c RH |
404 | config DEBUG_SOCFPGA_UART |
405 | depends on ARCH_SOCFPGA | |
406 | bool "Use SOCFPGA UART for low-level debug" | |
407 | help | |
408 | Say Y here if you want kernel low-level debugging support | |
409 | on SOCFPGA based platforms. | |
410 | ||
aa25115a SR |
411 | config DEBUG_SUNXI_UART0 |
412 | bool "Kernel low-level debugging messages via sunXi UART0" | |
413 | depends on ARCH_SUNXI | |
414 | help | |
415 | Say Y here if you want kernel low-level debugging support | |
416 | on Allwinner A1X based platforms on the UART0. | |
417 | ||
cb84fa18 MR |
418 | config DEBUG_SUNXI_UART1 |
419 | bool "Kernel low-level debugging messages via sunXi UART1" | |
420 | depends on ARCH_SUNXI | |
421 | help | |
422 | Say Y here if you want kernel low-level debugging support | |
423 | on Allwinner A1X based platforms on the UART1. | |
424 | ||
46067803 SW |
425 | config DEBUG_TEGRA_UART |
426 | depends on ARCH_TEGRA | |
427 | bool "Use Tegra UART for low-level debug" | |
428 | help | |
429 | Say Y here if you want kernel low-level debugging support | |
430 | on Tegra based platforms. | |
431 | ||
7f46a107 BS |
432 | config DEBUG_SIRFPRIMA2_UART1 |
433 | bool "Kernel low-level debugging messages via SiRFprimaII UART1" | |
434 | depends on ARCH_PRIMA2 | |
435 | help | |
436 | Say Y here if you want the debug print routines to direct | |
437 | their output to the uart1 port on SiRFprimaII devices. | |
438 | ||
439 | config DEBUG_SIRFMARCO_UART1 | |
440 | bool "Kernel low-level debugging messages via SiRFmarco UART1" | |
441 | depends on ARCH_MARCO | |
442 | help | |
443 | Say Y here if you want the debug print routines to direct | |
444 | their output to the uart1 port on SiRFmarco devices. | |
445 | ||
f87b95dd LW |
446 | config DEBUG_UX500_UART |
447 | depends on ARCH_U8500 | |
448 | bool "Use Ux500 UART for low-level debug" | |
449 | help | |
450 | Say Y here if you want kernel low-level debugging support | |
451 | on Ux500 based platforms. | |
452 | ||
1b820eaf PM |
453 | config DEBUG_VEXPRESS_UART0_DETECT |
454 | bool "Autodetect UART0 on Versatile Express Cortex-A core tiles" | |
455 | depends on ARCH_VEXPRESS && CPU_CP15_MMU | |
456 | help | |
457 | This option enables a simple heuristic which tries to determine | |
458 | the motherboard's memory map variant (original or RS1) and then | |
459 | choose the relevant UART0 base address. | |
460 | ||
461 | Note that this will only work with standard A-class core tiles, | |
462 | and may fail with non-standard SMM or custom software models. | |
463 | ||
464 | config DEBUG_VEXPRESS_UART0_CA9 | |
465 | bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)" | |
466 | depends on ARCH_VEXPRESS | |
467 | help | |
468 | This option selects UART0 at 0x10009000. Except for custom models, | |
469 | this applies only to the V2P-CA9 tile. | |
470 | ||
471 | config DEBUG_VEXPRESS_UART0_RS1 | |
472 | bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)" | |
473 | depends on ARCH_VEXPRESS | |
474 | help | |
475 | This option selects UART0 at 0x1c090000. This applies to most | |
476 | of the tiles using the RS1 memory map, including all new A-class | |
477 | core tiles, FPGA-based SMMs and software models. | |
478 | ||
b61a2722 TP |
479 | config DEBUG_VT8500_UART0 |
480 | bool "Use UART0 on VIA/Wondermedia SoCs" | |
481 | depends on ARCH_VT8500 | |
482 | help | |
483 | This option selects UART0 on VIA/Wondermedia System-on-a-chip | |
484 | devices, including VT8500, WM8505, WM8650 and WM8850. | |
485 | ||
e76f4750 RK |
486 | config DEBUG_LL_UART_NONE |
487 | bool "No low-level debugging UART" | |
387798b3 | 488 | depends on !ARCH_MULTIPLATFORM |
a3d3ef9d | 489 | help |
e76f4750 RK |
490 | Say Y here if your platform doesn't provide a UART option |
491 | below. This relies on your platform choosing the right UART | |
492 | definition internally in order for low-level debugging to | |
493 | work. | |
a3d3ef9d | 494 | |
e76f4750 RK |
495 | config DEBUG_ICEDCC |
496 | bool "Kernel low-level debugging via EmbeddedICE DCC channel" | |
a3d3ef9d SB |
497 | help |
498 | Say Y here if you want the debug print routines to direct | |
e76f4750 RK |
499 | their output to the EmbeddedICE macrocell's DCC channel using |
500 | co-processor 14. This is known to work on the ARM9 style ICE | |
501 | channel and on the XScale with the PEEDI. | |
502 | ||
503 | Note that the system will appear to hang during boot if there | |
504 | is nothing connected to read from the DCC. | |
a3d3ef9d | 505 | |
b0df8986 | 506 | config DEBUG_SEMIHOSTING |
62194bda | 507 | bool "Kernel low-level debug output via semihosting I/O" |
650e3f0d | 508 | help |
b0df8986 RK |
509 | Semihosting enables code running on an ARM target to use |
510 | the I/O facilities on a host debugger/emulator through a | |
62194bda | 511 | simple SVC call. The host debugger or emulator must have |
b0df8986 RK |
512 | semihosting enabled for the special svc call to be trapped |
513 | otherwise the kernel will crash. | |
650e3f0d | 514 | |
62194bda | 515 | This is known to work with OpenOCD, as well as |
b0df8986 RK |
516 | ARM's Fast Models, or any other controlling environment |
517 | that implements semihosting. | |
a3d3ef9d | 518 | |
b0df8986 RK |
519 | For more details about semihosting, please see |
520 | chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd. | |
a3d3ef9d | 521 | |
17916b28 WD |
522 | endchoice |
523 | ||
a2e40710 AB |
524 | config DEBUG_EXYNOS_UART |
525 | bool | |
526 | ||
f8c95fe6 SG |
527 | config DEBUG_IMX_UART_PORT |
528 | int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \ | |
529 | DEBUG_IMX25_UART || \ | |
530 | DEBUG_IMX21_IMX27_UART || \ | |
531 | DEBUG_IMX31_UART || \ | |
532 | DEBUG_IMX35_UART || \ | |
533 | DEBUG_IMX51_UART || \ | |
0c52db7e | 534 | DEBUG_IMX53_UART || \ |
f8c95fe6 | 535 | DEBUG_IMX6Q_UART |
49c9e60e | 536 | default 1 |
287939a3 | 537 | depends on ARCH_MXC |
49c9e60e SG |
538 | help |
539 | Choose UART port on which kernel low-level debug messages | |
540 | should be output. | |
541 | ||
808b7e07 TL |
542 | choice |
543 | prompt "Low-level debug console UART" | |
544 | depends on DEBUG_OMAP2PLUS_UART | |
545 | ||
546 | config DEBUG_OMAP2UART1 | |
547 | bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" | |
548 | help | |
549 | This covers at least h4, 2430sdp, 3430sdp, 3630sdp, | |
550 | omap3 torpedo and 3530 lv som. | |
551 | ||
552 | config DEBUG_OMAP2UART2 | |
553 | bool "OMAP2/3/4 UART2" | |
554 | ||
555 | config DEBUG_OMAP2UART3 | |
556 | bool "OMAP2 UART3 (n8x0)" | |
557 | ||
558 | config DEBUG_OMAP3UART3 | |
559 | bool "OMAP3 UART3 (most omap3 boards)" | |
560 | help | |
561 | This covers at least cm_t3x, beagle, crane, devkit8000, | |
562 | igep00x0, ldp, n900, n9(50), pandora, overo, touchbook, | |
563 | and 3517evm. | |
564 | ||
565 | config DEBUG_OMAP4UART3 | |
566 | bool "OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)" | |
567 | ||
568 | config DEBUG_OMAP3UART4 | |
569 | bool "OMAP36XX UART4" | |
570 | ||
571 | config DEBUG_OMAP4UART4 | |
572 | bool "OMAP4/5 UART4" | |
573 | ||
574 | config DEBUG_TI81XXUART1 | |
575 | bool "TI81XX UART1 (ti8148evm)" | |
576 | ||
577 | config DEBUG_TI81XXUART2 | |
578 | bool "TI81XX UART2" | |
579 | ||
580 | config DEBUG_TI81XXUART3 | |
581 | bool "TI81XX UART3 (ti8168evm)" | |
582 | ||
583 | config DEBUG_AM33XXUART1 | |
584 | bool "AM33XX UART1" | |
585 | ||
586 | config DEBUG_ZOOM_UART | |
587 | bool "Zoom2/3 UART" | |
588 | endchoice | |
589 | ||
46067803 SW |
590 | choice |
591 | prompt "Low-level debug console UART" | |
592 | depends on DEBUG_LL && DEBUG_TEGRA_UART | |
593 | ||
594 | config TEGRA_DEBUG_UART_AUTO_ODMDATA | |
595 | bool "Via ODMDATA" | |
596 | help | |
597 | Automatically determines which UART to use for low-level debug based | |
598 | on the ODMDATA value. This value is part of the BCT, and is written | |
599 | to the boot memory device using nvflash, or other flashing tool. | |
600 | When bits 19:18 are 3, then bits 17:15 indicate which UART to use; | |
601 | 0/1/2/3/4 are UART A/B/C/D/E. | |
602 | ||
603 | config TEGRA_DEBUG_UARTA | |
604 | bool "UART A" | |
605 | ||
606 | config TEGRA_DEBUG_UARTB | |
607 | bool "UART B" | |
608 | ||
609 | config TEGRA_DEBUG_UARTC | |
610 | bool "UART C" | |
611 | ||
612 | config TEGRA_DEBUG_UARTD | |
613 | bool "UART D" | |
614 | ||
615 | config TEGRA_DEBUG_UARTE | |
616 | bool "UART E" | |
617 | ||
618 | endchoice | |
619 | ||
91a9fec0 RH |
620 | config DEBUG_LL_INCLUDE |
621 | string | |
f1ac922d | 622 | default "debug/bcm2835.S" if DEBUG_BCM2835 |
29c9b7be | 623 | default "debug/cns3xxx.S" if DEBUG_CNS3XXX |
a2e40710 | 624 | default "debug/exynos.S" if DEBUG_EXYNOS_UART |
150a8dcf | 625 | default "debug/highbank.S" if DEBUG_HIGHBANK_UART |
91a9fec0 | 626 | default "debug/icedcc.S" if DEBUG_ICEDCC |
6dde5ac5 SG |
627 | default "debug/imx.S" if DEBUG_IMX1_UART || \ |
628 | DEBUG_IMX25_UART || \ | |
629 | DEBUG_IMX21_IMX27_UART || \ | |
4ad625d4 SG |
630 | DEBUG_IMX31_UART || \ |
631 | DEBUG_IMX35_UART || \ | |
6dde5ac5 | 632 | DEBUG_IMX51_UART || \ |
7356420c | 633 | DEBUG_IMX53_UART ||\ |
49c9e60e | 634 | DEBUG_IMX6Q_UART |
bfd5af99 | 635 | default "debug/mvebu.S" if DEBUG_MVEBU_UART |
e91411b4 | 636 | default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART |
266c3479 | 637 | default "debug/nomadik.S" if DEBUG_NOMADIK_UART |
808b7e07 | 638 | default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART |
59bba2a9 | 639 | default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART |
0a43cd3b HZ |
640 | default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \ |
641 | DEBUG_MMP_UART3 | |
67bdb287 | 642 | default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 |
6111bf7c | 643 | default "debug/socfpga.S" if DEBUG_SOCFPGA_UART |
aa25115a | 644 | default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1 |
150a8dcf LT |
645 | default "debug/tegra.S" if DEBUG_TEGRA_UART |
646 | default "debug/ux500.S" if DEBUG_UX500_UART | |
fa04e4db RH |
647 | default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \ |
648 | DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1 | |
b61a2722 | 649 | default "debug/vt8500.S" if DEBUG_VT8500_UART0 |
385f02b1 | 650 | default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 |
91a9fec0 RH |
651 | default "mach/debug-macro.S" |
652 | ||
3b4af9bc SG |
653 | config DEBUG_UNCOMPRESS |
654 | bool | |
655 | default y if ARCH_MULTIPLATFORM && DEBUG_LL && \ | |
656 | !DEBUG_OMAP2PLUS_UART && \ | |
657 | !DEBUG_TEGRA_UART | |
658 | ||
615967b0 SG |
659 | config UNCOMPRESS_INCLUDE |
660 | string | |
661 | default "debug/uncompress.h" if ARCH_MULTIPLATFORM | |
662 | default "mach/uncompress.h" | |
663 | ||
93fd03a8 CM |
664 | config EARLY_PRINTK |
665 | bool "Early printk" | |
666 | depends on DEBUG_LL | |
667 | help | |
668 | Say Y here if you want to have an early console using the | |
669 | kernel low-level debugging functions. Add earlyprintk to your | |
670 | kernel parameters to enable this console. | |
671 | ||
c5d6c770 AS |
672 | config OC_ETM |
673 | bool "On-chip ETM and ETB" | |
53eebb0d | 674 | depends on ARM_AMBA |
c5d6c770 AS |
675 | help |
676 | Enables the on-chip embedded trace macrocell and embedded trace | |
677 | buffer driver that will allow you to collect traces of the | |
678 | kernel code. | |
679 | ||
4189bc71 JM |
680 | config ARM_KPROBES_TEST |
681 | tristate "Kprobes test module" | |
682 | depends on KPROBES && MODULES | |
683 | help | |
684 | Perform tests of kprobes API and instruction set simulation. | |
685 | ||
575320d6 WD |
686 | config PID_IN_CONTEXTIDR |
687 | bool "Write the current PID to the CONTEXTIDR register" | |
688 | depends on CPU_COPY_V6 | |
689 | help | |
690 | Enabling this option causes the kernel to write the current PID to | |
691 | the PROCID field of the CONTEXTIDR register, at the expense of some | |
692 | additional instructions during context switch. Say Y here only if you | |
693 | are planning to use hardware trace tools with this kernel. | |
694 | ||
1da177e4 | 695 | endmenu |