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Commit | Line | Data |
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14cf11af PM |
1 | menu "Kernel hacking" |
2 | ||
3 | source "lib/Kconfig.debug" | |
4 | ||
ba55bd74 ME |
5 | config PPC_DISABLE_WERROR |
6 | bool "Don't build arch/powerpc code with -Werror" | |
7 | default n | |
8 | help | |
9 | This option tells the compiler NOT to build the code under | |
10 | arch/powerpc with the -Werror flag (which means warnings | |
11 | are treated as errors). | |
12 | ||
13 | Only enable this if you are hitting a build failure in the | |
14 | arch/powerpc code caused by a warning, and you don't feel | |
15 | inclined to fix it. | |
16 | ||
17 | config PPC_WERROR | |
18 | bool | |
19 | depends on !PPC_DISABLE_WERROR | |
20 | default y | |
21 | ||
c4d04be1 JB |
22 | config PRINT_STACK_DEPTH |
23 | int "Stack depth to print" if DEBUG_KERNEL | |
24 | default 64 | |
25 | help | |
26 | This option allows you to set the stack depth that the kernel | |
27 | prints in stack traces. This can be useful if your display is | |
28 | too small and stack traces cause important information to | |
29 | scroll off the screen. | |
30 | ||
57852a85 MK |
31 | config HCALL_STATS |
32 | bool "Hypervisor call instrumentation" | |
c8cd093a | 33 | depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS |
57852a85 MK |
34 | help |
35 | Adds code to keep track of the number of hypervisor calls made and | |
3dde6ad8 | 36 | the amount of time spent in hypervisor calls. Wall time spent in |
57852a85 MK |
37 | each call is always calculated, and if available CPU cycles spent |
38 | are also calculated. A directory named hcall_inst is added at the | |
39 | root of the debugfs filesystem. Within the hcall_inst directory | |
40 | are files that contain CPU specific call statistics. | |
41 | ||
42 | This option will add a small amount of overhead to all hypervisor | |
43 | calls. | |
44 | ||
80947e7c GU |
45 | config PPC_EMULATED_STATS |
46 | bool "Emulated instructions tracking" | |
47 | depends on DEBUG_FS | |
48 | help | |
49 | Adds code to keep track of the number of instructions that are | |
50 | emulated by the in-kernel emulator. Counters for the various classes | |
51 | of emulated instructions are available under | |
52 | powerpc/emulated_instructions/ in the root of the debugfs file | |
53 | system. Optionally (controlled by | |
54 | powerpc/emulated_instructions/do_warn in debugfs), rate-limited | |
55 | warnings can be printed to the console when instructions are | |
56 | emulated. | |
57 | ||
ae0dc736 ME |
58 | config CODE_PATCHING_SELFTEST |
59 | bool "Run self-tests of the code-patching code." | |
60 | depends on DEBUG_KERNEL | |
61 | default n | |
62 | ||
362e7701 ME |
63 | config FTR_FIXUP_SELFTEST |
64 | bool "Run self-tests of the feature-fixup code." | |
65 | depends on DEBUG_KERNEL | |
66 | default n | |
67 | ||
7e302869 ME |
68 | config MSI_BITMAP_SELFTEST |
69 | bool "Run self-tests of the MSI bitmap code." | |
70 | depends on DEBUG_KERNEL | |
71 | default n | |
72 | ||
14cf11af PM |
73 | config XMON |
74 | bool "Include xmon kernel debugger" | |
17ce452f | 75 | depends on DEBUG_KERNEL |
14cf11af PM |
76 | help |
77 | Include in-kernel hooks for the xmon kernel monitor/debugger. | |
78 | Unless you are intending to debug the kernel, say N here. | |
ff64208d PM |
79 | Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise |
80 | nothing will appear on the screen (xmon writes directly to the | |
81 | framebuffer memory). | |
82 | The cmdline option 'xmon' or 'xmon=early' will drop into xmon | |
83 | very early during boot. 'xmon=on' will just enable the xmon | |
84 | debugger hooks. 'xmon=off' will disable the debugger hooks | |
85 | if CONFIG_XMON_DEFAULT is set. | |
26c8af5f OH |
86 | xmon will print a backtrace on the very first invocation. |
87 | 'xmon=nobt' will disable this autobacktrace. | |
ff64208d PM |
88 | |
89 | config XMON_DEFAULT | |
90 | bool "Enable xmon by default" | |
91 | depends on XMON | |
92 | help | |
93 | xmon is normally disabled unless booted with 'xmon=on'. | |
94 | Use 'xmon=off' to disable xmon init during runtime. | |
95 | ||
e0426047 ME |
96 | config XMON_DISASSEMBLY |
97 | bool "Include disassembly support in xmon" | |
98 | depends on XMON | |
99 | default y | |
100 | help | |
101 | Include support for disassembling in xmon. You probably want | |
102 | to say Y here, unless you're building for a memory-constrained | |
103 | system. | |
104 | ||
17ce452f JW |
105 | config DEBUGGER |
106 | bool | |
107 | depends on KGDB || XMON | |
108 | default y | |
109 | ||
14cf11af PM |
110 | config BDI_SWITCH |
111 | bool "Include BDI-2000 user context switcher" | |
ff64208d | 112 | depends on DEBUG_KERNEL && PPC32 |
14cf11af PM |
113 | help |
114 | Include in-kernel support for the Abatron BDI2000 debugger. | |
115 | Unless you are intending to debug the kernel with one of these | |
116 | machines, say N here. | |
117 | ||
118 | config BOOTX_TEXT | |
119 | bool "Support for early boot text console (BootX or OpenFirmware only)" | |
28794d34 | 120 | depends on PPC_OF && PPC_BOOK3S |
14cf11af PM |
121 | help |
122 | Say Y here to see progress messages from the boot firmware in text | |
123 | mode. Requires either BootX or Open Firmware. | |
124 | ||
485a2d54 ME |
125 | config PPC_EARLY_DEBUG |
126 | bool "Early debugging (dangerous)" | |
7ee17466 BH |
127 | help |
128 | Say Y to enable some early debugging facilities that may be available | |
129 | for your processor/board combination. Those facilities are hacks | |
130 | intended to debug problems early during boot, this should not be | |
131 | enabled in a production kernel. | |
132 | Note that enabling this will also cause the kernel default log level | |
133 | to be pushed to max automatically very early during boot | |
485a2d54 | 134 | |
296167ae | 135 | choice |
485a2d54 ME |
136 | prompt "Early debugging console" |
137 | depends on PPC_EARLY_DEBUG | |
296167ae | 138 | help |
485a2d54 ME |
139 | Use the selected console for early debugging. Careful, if you |
140 | enable debugging for the wrong type of machine your kernel | |
141 | _will not boot_. | |
296167ae | 142 | |
071df942 AP |
143 | config PPC_EARLY_DEBUG_BOOTX |
144 | bool "BootX or OpenFirmware" | |
145 | depends on BOOTX_TEXT | |
146 | help | |
147 | Select this to enable early debugging for a machine using BootX | |
148 | or OpenFirmware. | |
149 | ||
296167ae ME |
150 | config PPC_EARLY_DEBUG_LPAR |
151 | bool "LPAR HV Console" | |
152 | depends on PPC_PSERIES | |
153 | help | |
154 | Select this to enable early debugging for a machine with a HVC | |
155 | console on vterm 0. | |
156 | ||
4d2bb3f5 BH |
157 | config PPC_EARLY_DEBUG_LPAR_HVSI |
158 | bool "LPAR HVSI Console" | |
159 | depends on PPC_PSERIES | |
160 | help | |
161 | Select this to enable early debugging for a machine with a HVSI | |
162 | console on a specified vterm. | |
163 | ||
296167ae ME |
164 | config PPC_EARLY_DEBUG_G5 |
165 | bool "Apple G5" | |
166 | depends on PPC_PMAC64 | |
167 | help | |
168 | Select this to enable early debugging for Apple G5 machines. | |
169 | ||
cc46bb98 | 170 | config PPC_EARLY_DEBUG_RTAS_PANEL |
296167ae ME |
171 | bool "RTAS Panel" |
172 | depends on PPC_RTAS | |
173 | help | |
174 | Select this to enable early debugging via the RTAS panel. | |
175 | ||
cc46bb98 ME |
176 | config PPC_EARLY_DEBUG_RTAS_CONSOLE |
177 | bool "RTAS Console" | |
178 | depends on PPC_RTAS | |
179 | select UDBG_RTAS_CONSOLE | |
180 | help | |
181 | Select this to enable early debugging via the RTAS console. | |
182 | ||
296167ae ME |
183 | config PPC_EARLY_DEBUG_MAPLE |
184 | bool "Maple real mode" | |
185 | depends on PPC_MAPLE | |
186 | help | |
187 | Select this to enable early debugging for Maple. | |
188 | ||
39c870d5 OJ |
189 | config PPC_EARLY_DEBUG_PAS_REALMODE |
190 | bool "PA Semi real mode" | |
191 | depends on PPC_PASEMI | |
192 | help | |
193 | Select this to enable early debugging for PA Semi. | |
194 | Output will be on UART0. | |
195 | ||
c347b798 IK |
196 | config PPC_EARLY_DEBUG_BEAT |
197 | bool "Beat HV Console" | |
198 | depends on PPC_CELLEB | |
199 | select PPC_UDBG_BEAT | |
200 | help | |
201 | Select this to enable early debugging for Celleb with Beat. | |
202 | ||
d9b55a03 DG |
203 | config PPC_EARLY_DEBUG_44x |
204 | bool "Early serial debugging for IBM/AMCC 44x CPUs" | |
b8bb922c BH |
205 | # PPC_EARLY_DEBUG on 440 leaves AS=1 mappings above the TLB high water |
206 | # mark, which doesn't work with current 440 KVM. | |
207 | depends on 44x && !KVM | |
d9b55a03 DG |
208 | help |
209 | Select this to enable early debugging for IBM 44x chips via the | |
6bbc5476 HB |
210 | inbuilt serial port. If you enable this, ensure you set |
211 | PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board. | |
d9b55a03 | 212 | |
9dae8afd BH |
213 | config PPC_EARLY_DEBUG_40x |
214 | bool "Early serial debugging for IBM/AMCC 40x CPUs" | |
215 | depends on 40x | |
216 | help | |
217 | Select this to enable early debugging for IBM 40x chips via the | |
218 | inbuilt serial port. This works on chips with a 16550 compatible | |
219 | UART. Xilinx chips with uartlite cannot use this option. | |
220 | ||
c374e00e SW |
221 | config PPC_EARLY_DEBUG_CPM |
222 | bool "Early serial debugging for Freescale CPM-based serial ports" | |
223 | depends on SERIAL_CPM | |
224 | select PIN_TLB if PPC_8xx | |
225 | help | |
226 | Select this to enable early debugging for Freescale chips | |
227 | using a CPM-based serial port. This assumes that the bootwrapper | |
228 | has run, and set up the CPM in a particular way. | |
229 | ||
d1d56f8c AH |
230 | config PPC_EARLY_DEBUG_USBGECKO |
231 | bool "Early debugging through the USB Gecko adapter" | |
232 | depends on GAMECUBE_COMMON | |
233 | select USBGECKO_UDBG | |
234 | help | |
235 | Select this to enable early debugging for Nintendo GameCube/Wii | |
236 | consoles via an external USB Gecko adapter. | |
237 | ||
a0496d45 JM |
238 | config PPC_EARLY_DEBUG_WSP |
239 | bool "Early debugging via WSP's internal UART" | |
240 | depends on PPC_WSP | |
241 | select PPC_UDBG_16550 | |
242 | ||
c26afe9e HM |
243 | config PPC_EARLY_DEBUG_PS3GELIC |
244 | bool "Early debugging through the PS3 Ethernet port" | |
245 | depends on PPC_PS3 | |
246 | select PS3GELIC_UDBG | |
247 | help | |
248 | Select this to enable early debugging for the PlayStation3 via | |
249 | UDP broadcasts sent out through the Ethernet port. | |
250 | ||
daea1175 BH |
251 | config PPC_EARLY_DEBUG_OPAL_RAW |
252 | bool "OPAL raw console" | |
253 | depends on HVC_OPAL | |
254 | help | |
255 | Select this to enable early debugging for the PowerNV platform | |
256 | using a "raw" console | |
257 | ||
258 | config PPC_EARLY_DEBUG_OPAL_HVSI | |
259 | bool "OPAL hvsi console" | |
260 | depends on HVC_OPAL | |
261 | help | |
262 | Select this to enable early debugging for the PowerNV platform | |
263 | using an "hvsi" console | |
264 | ||
30650239 AP |
265 | config PPC_EARLY_DEBUG_MEMCONS |
266 | bool "In memory console" | |
267 | help | |
268 | Select this to enable early debugging using an in memory console. | |
269 | This console provides input and output buffers stored within the | |
270 | kernel BSS and should be safe to select on any system. A debugger | |
271 | can then be used to read kernel output or send input to the console. | |
296167ae ME |
272 | endchoice |
273 | ||
30650239 AP |
274 | config PPC_MEMCONS_OUTPUT_SIZE |
275 | int "In memory console output buffer size" | |
276 | depends on PPC_EARLY_DEBUG_MEMCONS | |
277 | default 4096 | |
278 | help | |
279 | Selects the size of the output buffer (in bytes) of the in memory | |
280 | console. | |
281 | ||
282 | config PPC_MEMCONS_INPUT_SIZE | |
283 | int "In memory console input buffer size" | |
284 | depends on PPC_EARLY_DEBUG_MEMCONS | |
285 | default 128 | |
286 | help | |
287 | Selects the size of the input buffer (in bytes) of the in memory | |
288 | console. | |
289 | ||
daea1175 BH |
290 | config PPC_EARLY_DEBUG_OPAL |
291 | def_bool y | |
292 | depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI | |
293 | ||
294 | ||
4d2bb3f5 BH |
295 | config PPC_EARLY_DEBUG_HVSI_VTERMNO |
296 | hex "vterm number to use with early debug HVSI" | |
297 | depends on PPC_EARLY_DEBUG_LPAR_HVSI | |
298 | default "0x30000000" | |
299 | help | |
300 | You probably want 0x30000000 for your first serial port and | |
301 | 0x30000001 for your second one | |
302 | ||
daea1175 BH |
303 | config PPC_EARLY_DEBUG_OPAL_VTERMNO |
304 | hex "vterm number to use with OPAL early debug" | |
305 | depends on PPC_EARLY_DEBUG_OPAL | |
306 | default "0" | |
307 | help | |
308 | This correspond to which /dev/hvcN you want to use for early | |
309 | debug. | |
310 | ||
311 | On OPAL v1 (takeover) this should always be 0 | |
312 | On OPAL v2, this will be 0 for network console and 1 or 2 for | |
313 | the machine built-in serial ports. | |
314 | ||
d9b55a03 DG |
315 | config PPC_EARLY_DEBUG_44x_PHYSLOW |
316 | hex "Low 32 bits of early debug UART physical address" | |
247537b9 | 317 | depends on PPC_EARLY_DEBUG_44x |
d9b55a03 | 318 | default "0x40000200" |
6bbc5476 HB |
319 | help |
320 | You probably want 0x40000200 for ebony boards and | |
321 | 0x40000300 for taishan | |
d9b55a03 DG |
322 | |
323 | config PPC_EARLY_DEBUG_44x_PHYSHIGH | |
324 | hex "EPRN of early debug UART physical address" | |
247537b9 | 325 | depends on PPC_EARLY_DEBUG_44x |
d9b55a03 DG |
326 | default "0x1" |
327 | ||
9dae8afd BH |
328 | config PPC_EARLY_DEBUG_40x_PHYSADDR |
329 | hex "Early debug UART physical address" | |
330 | depends on PPC_EARLY_DEBUG_40x | |
331 | default "0xef600300" | |
332 | ||
c374e00e SW |
333 | config PPC_EARLY_DEBUG_CPM_ADDR |
334 | hex "CPM UART early debug transmit descriptor address" | |
335 | depends on PPC_EARLY_DEBUG_CPM | |
15f8c604 | 336 | default "0xfa202008" if PPC_EP88XC |
c2dd3529 | 337 | default "0xf0001ff8" if CPM2 |
15f8c604 | 338 | default "0xff002008" if CPM1 |
c374e00e SW |
339 | help |
340 | This specifies the address of the transmit descriptor | |
341 | used for early debug output. Because it is needed before | |
342 | platform probing is done, all platforms selected must | |
343 | share the same address. | |
344 | ||
1d54cf2b | 345 | config STRICT_DEVMEM |
346 | def_bool y | |
347 | prompt "Filter access to /dev/mem" | |
348 | help | |
349 | This option restricts access to /dev/mem. If this option is | |
350 | disabled, you allow userspace access to all memory, including | |
351 | kernel and userspace memory. Accidental memory access is likely | |
352 | to be disastrous. | |
353 | Memory access is required for experts who want to debug the kernel. | |
354 | ||
355 | If you are unsure, say Y. | |
356 | ||
d6b9a81b AB |
357 | config FAIL_IOMMU |
358 | bool "Fault-injection capability for IOMMU" | |
359 | depends on FAULT_INJECTION | |
360 | help | |
361 | Provide fault-injection capability for IOMMU. Each device can | |
362 | be selectively enabled via the fail_iommu property. | |
363 | ||
364 | If you are unsure, say N. | |
365 | ||
14cf11af | 366 | endmenu |