Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
14cf11af | 2 | |
ba55bd74 ME |
3 | config PPC_DISABLE_WERROR |
4 | bool "Don't build arch/powerpc code with -Werror" | |
ba55bd74 ME |
5 | help |
6 | This option tells the compiler NOT to build the code under | |
7 | arch/powerpc with the -Werror flag (which means warnings | |
8 | are treated as errors). | |
9 | ||
10 | Only enable this if you are hitting a build failure in the | |
11 | arch/powerpc code caused by a warning, and you don't feel | |
12 | inclined to fix it. | |
13 | ||
14 | config PPC_WERROR | |
15 | bool | |
16 | depends on !PPC_DISABLE_WERROR | |
17 | default y | |
18 | ||
c4d04be1 JB |
19 | config PRINT_STACK_DEPTH |
20 | int "Stack depth to print" if DEBUG_KERNEL | |
21 | default 64 | |
22 | help | |
23 | This option allows you to set the stack depth that the kernel | |
24 | prints in stack traces. This can be useful if your display is | |
25 | too small and stack traces cause important information to | |
26 | scroll off the screen. | |
27 | ||
57852a85 MK |
28 | config HCALL_STATS |
29 | bool "Hypervisor call instrumentation" | |
c8cd093a | 30 | depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS |
57852a85 MK |
31 | help |
32 | Adds code to keep track of the number of hypervisor calls made and | |
3dde6ad8 | 33 | the amount of time spent in hypervisor calls. Wall time spent in |
57852a85 MK |
34 | each call is always calculated, and if available CPU cycles spent |
35 | are also calculated. A directory named hcall_inst is added at the | |
36 | root of the debugfs filesystem. Within the hcall_inst directory | |
37 | are files that contain CPU specific call statistics. | |
38 | ||
39 | This option will add a small amount of overhead to all hypervisor | |
40 | calls. | |
41 | ||
80947e7c GU |
42 | config PPC_EMULATED_STATS |
43 | bool "Emulated instructions tracking" | |
44 | depends on DEBUG_FS | |
45 | help | |
46 | Adds code to keep track of the number of instructions that are | |
47 | emulated by the in-kernel emulator. Counters for the various classes | |
48 | of emulated instructions are available under | |
49 | powerpc/emulated_instructions/ in the root of the debugfs file | |
50 | system. Optionally (controlled by | |
51 | powerpc/emulated_instructions/do_warn in debugfs), rate-limited | |
52 | warnings can be printed to the console when instructions are | |
53 | emulated. | |
54 | ||
ae0dc736 | 55 | config CODE_PATCHING_SELFTEST |
759fb100 | 56 | bool "Run self-tests of the code-patching code" |
ae0dc736 | 57 | depends on DEBUG_KERNEL |
ae0dc736 | 58 | |
bfbfc8a4 ME |
59 | config JUMP_LABEL_FEATURE_CHECKS |
60 | bool "Enable use of jump label for cpu/mmu_has_feature()" | |
61 | depends on JUMP_LABEL | |
62 | default y | |
63 | help | |
64 | Selecting this options enables use of jump labels for some internal | |
65 | feature checks. This should generate more optimal code for those | |
66 | checks. | |
67 | ||
c812c7d8 AK |
68 | config JUMP_LABEL_FEATURE_CHECK_DEBUG |
69 | bool "Do extra check on feature fixup calls" | |
70 | depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS | |
c812c7d8 AK |
71 | help |
72 | This tries to catch incorrect usage of cpu_has_feature() and | |
73 | mmu_has_feature() in the code. | |
74 | ||
75 | If you don't know what this means, say N. | |
76 | ||
362e7701 | 77 | config FTR_FIXUP_SELFTEST |
759fb100 | 78 | bool "Run self-tests of the feature-fixup code" |
362e7701 | 79 | depends on DEBUG_KERNEL |
362e7701 | 80 | |
7e302869 | 81 | config MSI_BITMAP_SELFTEST |
759fb100 | 82 | bool "Run self-tests of the MSI bitmap code" |
7e302869 | 83 | depends on DEBUG_KERNEL |
7e302869 | 84 | |
9aa88188 MS |
85 | config PPC_IRQ_SOFT_MASK_DEBUG |
86 | bool "Include extra checks for powerpc irq soft masking" | |
9aa88188 | 87 | |
14cf11af PM |
88 | config XMON |
89 | bool "Include xmon kernel debugger" | |
17ce452f | 90 | depends on DEBUG_KERNEL |
14cf11af PM |
91 | help |
92 | Include in-kernel hooks for the xmon kernel monitor/debugger. | |
93 | Unless you are intending to debug the kernel, say N here. | |
ff64208d PM |
94 | Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise |
95 | nothing will appear on the screen (xmon writes directly to the | |
96 | framebuffer memory). | |
97 | The cmdline option 'xmon' or 'xmon=early' will drop into xmon | |
98 | very early during boot. 'xmon=on' will just enable the xmon | |
99 | debugger hooks. 'xmon=off' will disable the debugger hooks | |
100 | if CONFIG_XMON_DEFAULT is set. | |
26c8af5f OH |
101 | xmon will print a backtrace on the very first invocation. |
102 | 'xmon=nobt' will disable this autobacktrace. | |
ff64208d PM |
103 | |
104 | config XMON_DEFAULT | |
105 | bool "Enable xmon by default" | |
106 | depends on XMON | |
107 | help | |
108 | xmon is normally disabled unless booted with 'xmon=on'. | |
109 | Use 'xmon=off' to disable xmon init during runtime. | |
110 | ||
e0426047 ME |
111 | config XMON_DISASSEMBLY |
112 | bool "Include disassembly support in xmon" | |
113 | depends on XMON | |
114 | default y | |
115 | help | |
116 | Include support for disassembling in xmon. You probably want | |
117 | to say Y here, unless you're building for a memory-constrained | |
118 | system. | |
119 | ||
0acb5f64 CR |
120 | config XMON_DEFAULT_RO_MODE |
121 | bool "Restrict xmon to read-only operations by default" | |
122 | depends on XMON | |
123 | default y | |
124 | help | |
5f017a56 KK |
125 | Operate xmon in read-only mode. The cmdline options 'xmon=rw' and |
126 | 'xmon=ro' override this default. | |
0acb5f64 | 127 | |
17ce452f JW |
128 | config DEBUGGER |
129 | bool | |
130 | depends on KGDB || XMON | |
131 | default y | |
132 | ||
14cf11af PM |
133 | config BDI_SWITCH |
134 | bool "Include BDI-2000 user context switcher" | |
ff64208d | 135 | depends on DEBUG_KERNEL && PPC32 |
14cf11af PM |
136 | help |
137 | Include in-kernel support for the Abatron BDI2000 debugger. | |
138 | Unless you are intending to debug the kernel with one of these | |
139 | machines, say N here. | |
140 | ||
141 | config BOOTX_TEXT | |
142 | bool "Support for early boot text console (BootX or OpenFirmware only)" | |
52d99627 | 143 | depends on PPC_BOOK3S |
14cf11af PM |
144 | help |
145 | Say Y here to see progress messages from the boot firmware in text | |
146 | mode. Requires either BootX or Open Firmware. | |
147 | ||
485a2d54 ME |
148 | config PPC_EARLY_DEBUG |
149 | bool "Early debugging (dangerous)" | |
7ee17466 BH |
150 | help |
151 | Say Y to enable some early debugging facilities that may be available | |
152 | for your processor/board combination. Those facilities are hacks | |
153 | intended to debug problems early during boot, this should not be | |
154 | enabled in a production kernel. | |
155 | Note that enabling this will also cause the kernel default log level | |
156 | to be pushed to max automatically very early during boot | |
485a2d54 | 157 | |
296167ae | 158 | choice |
485a2d54 ME |
159 | prompt "Early debugging console" |
160 | depends on PPC_EARLY_DEBUG | |
296167ae | 161 | help |
485a2d54 ME |
162 | Use the selected console for early debugging. Careful, if you |
163 | enable debugging for the wrong type of machine your kernel | |
164 | _will not boot_. | |
296167ae | 165 | |
071df942 AP |
166 | config PPC_EARLY_DEBUG_BOOTX |
167 | bool "BootX or OpenFirmware" | |
168 | depends on BOOTX_TEXT | |
169 | help | |
170 | Select this to enable early debugging for a machine using BootX | |
171 | or OpenFirmware. | |
172 | ||
296167ae ME |
173 | config PPC_EARLY_DEBUG_LPAR |
174 | bool "LPAR HV Console" | |
23697760 | 175 | depends on PPC_PSERIES && HVC_CONSOLE |
296167ae ME |
176 | help |
177 | Select this to enable early debugging for a machine with a HVC | |
178 | console on vterm 0. | |
179 | ||
4d2bb3f5 BH |
180 | config PPC_EARLY_DEBUG_LPAR_HVSI |
181 | bool "LPAR HVSI Console" | |
23697760 | 182 | depends on PPC_PSERIES && HVC_CONSOLE |
4d2bb3f5 BH |
183 | help |
184 | Select this to enable early debugging for a machine with a HVSI | |
185 | console on a specified vterm. | |
186 | ||
296167ae ME |
187 | config PPC_EARLY_DEBUG_G5 |
188 | bool "Apple G5" | |
189 | depends on PPC_PMAC64 | |
190 | help | |
191 | Select this to enable early debugging for Apple G5 machines. | |
192 | ||
cc46bb98 | 193 | config PPC_EARLY_DEBUG_RTAS_PANEL |
296167ae ME |
194 | bool "RTAS Panel" |
195 | depends on PPC_RTAS | |
196 | help | |
197 | Select this to enable early debugging via the RTAS panel. | |
198 | ||
cc46bb98 ME |
199 | config PPC_EARLY_DEBUG_RTAS_CONSOLE |
200 | bool "RTAS Console" | |
201 | depends on PPC_RTAS | |
202 | select UDBG_RTAS_CONSOLE | |
203 | help | |
204 | Select this to enable early debugging via the RTAS console. | |
205 | ||
296167ae ME |
206 | config PPC_EARLY_DEBUG_MAPLE |
207 | bool "Maple real mode" | |
208 | depends on PPC_MAPLE | |
209 | help | |
210 | Select this to enable early debugging for Maple. | |
211 | ||
39c870d5 OJ |
212 | config PPC_EARLY_DEBUG_PAS_REALMODE |
213 | bool "PA Semi real mode" | |
214 | depends on PPC_PASEMI | |
215 | help | |
216 | Select this to enable early debugging for PA Semi. | |
217 | Output will be on UART0. | |
218 | ||
d9b55a03 DG |
219 | config PPC_EARLY_DEBUG_44x |
220 | bool "Early serial debugging for IBM/AMCC 44x CPUs" | |
b2677b8d | 221 | depends on 44x |
d9b55a03 DG |
222 | help |
223 | Select this to enable early debugging for IBM 44x chips via the | |
6bbc5476 | 224 | inbuilt serial port. If you enable this, ensure you set |
5f017a56 | 225 | PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board. |
d9b55a03 | 226 | |
9dae8afd BH |
227 | config PPC_EARLY_DEBUG_40x |
228 | bool "Early serial debugging for IBM/AMCC 40x CPUs" | |
229 | depends on 40x | |
230 | help | |
231 | Select this to enable early debugging for IBM 40x chips via the | |
232 | inbuilt serial port. This works on chips with a 16550 compatible | |
233 | UART. Xilinx chips with uartlite cannot use this option. | |
234 | ||
c374e00e SW |
235 | config PPC_EARLY_DEBUG_CPM |
236 | bool "Early serial debugging for Freescale CPM-based serial ports" | |
237 | depends on SERIAL_CPM | |
c374e00e SW |
238 | help |
239 | Select this to enable early debugging for Freescale chips | |
240 | using a CPM-based serial port. This assumes that the bootwrapper | |
241 | has run, and set up the CPM in a particular way. | |
242 | ||
d1d56f8c AH |
243 | config PPC_EARLY_DEBUG_USBGECKO |
244 | bool "Early debugging through the USB Gecko adapter" | |
245 | depends on GAMECUBE_COMMON | |
246 | select USBGECKO_UDBG | |
247 | help | |
248 | Select this to enable early debugging for Nintendo GameCube/Wii | |
249 | consoles via an external USB Gecko adapter. | |
250 | ||
c26afe9e HM |
251 | config PPC_EARLY_DEBUG_PS3GELIC |
252 | bool "Early debugging through the PS3 Ethernet port" | |
253 | depends on PPC_PS3 | |
254 | select PS3GELIC_UDBG | |
255 | help | |
256 | Select this to enable early debugging for the PlayStation3 via | |
257 | UDP broadcasts sent out through the Ethernet port. | |
258 | ||
daea1175 BH |
259 | config PPC_EARLY_DEBUG_OPAL_RAW |
260 | bool "OPAL raw console" | |
261 | depends on HVC_OPAL | |
262 | help | |
263 | Select this to enable early debugging for the PowerNV platform | |
264 | using a "raw" console | |
265 | ||
266 | config PPC_EARLY_DEBUG_OPAL_HVSI | |
267 | bool "OPAL hvsi console" | |
268 | depends on HVC_OPAL | |
269 | help | |
270 | Select this to enable early debugging for the PowerNV platform | |
271 | using an "hvsi" console | |
272 | ||
30650239 AP |
273 | config PPC_EARLY_DEBUG_MEMCONS |
274 | bool "In memory console" | |
275 | help | |
276 | Select this to enable early debugging using an in memory console. | |
277 | This console provides input and output buffers stored within the | |
278 | kernel BSS and should be safe to select on any system. A debugger | |
279 | can then be used to read kernel output or send input to the console. | |
296167ae ME |
280 | endchoice |
281 | ||
30650239 AP |
282 | config PPC_MEMCONS_OUTPUT_SIZE |
283 | int "In memory console output buffer size" | |
284 | depends on PPC_EARLY_DEBUG_MEMCONS | |
285 | default 4096 | |
286 | help | |
287 | Selects the size of the output buffer (in bytes) of the in memory | |
288 | console. | |
289 | ||
290 | config PPC_MEMCONS_INPUT_SIZE | |
291 | int "In memory console input buffer size" | |
292 | depends on PPC_EARLY_DEBUG_MEMCONS | |
293 | default 128 | |
294 | help | |
295 | Selects the size of the input buffer (in bytes) of the in memory | |
296 | console. | |
297 | ||
daea1175 BH |
298 | config PPC_EARLY_DEBUG_OPAL |
299 | def_bool y | |
300 | depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI | |
301 | ||
302 | ||
4d2bb3f5 BH |
303 | config PPC_EARLY_DEBUG_HVSI_VTERMNO |
304 | hex "vterm number to use with early debug HVSI" | |
305 | depends on PPC_EARLY_DEBUG_LPAR_HVSI | |
306 | default "0x30000000" | |
307 | help | |
308 | You probably want 0x30000000 for your first serial port and | |
309 | 0x30000001 for your second one | |
310 | ||
daea1175 BH |
311 | config PPC_EARLY_DEBUG_OPAL_VTERMNO |
312 | hex "vterm number to use with OPAL early debug" | |
313 | depends on PPC_EARLY_DEBUG_OPAL | |
314 | default "0" | |
315 | help | |
316 | This correspond to which /dev/hvcN you want to use for early | |
317 | debug. | |
318 | ||
daea1175 BH |
319 | On OPAL v2, this will be 0 for network console and 1 or 2 for |
320 | the machine built-in serial ports. | |
321 | ||
d9b55a03 DG |
322 | config PPC_EARLY_DEBUG_44x_PHYSLOW |
323 | hex "Low 32 bits of early debug UART physical address" | |
247537b9 | 324 | depends on PPC_EARLY_DEBUG_44x |
d9b55a03 | 325 | default "0x40000200" |
6bbc5476 HB |
326 | help |
327 | You probably want 0x40000200 for ebony boards and | |
5f017a56 | 328 | 0x40000300 for taishan |
d9b55a03 DG |
329 | |
330 | config PPC_EARLY_DEBUG_44x_PHYSHIGH | |
331 | hex "EPRN of early debug UART physical address" | |
247537b9 | 332 | depends on PPC_EARLY_DEBUG_44x |
d9b55a03 DG |
333 | default "0x1" |
334 | ||
9dae8afd BH |
335 | config PPC_EARLY_DEBUG_40x_PHYSADDR |
336 | hex "Early debug UART physical address" | |
337 | depends on PPC_EARLY_DEBUG_40x | |
338 | default "0xef600300" | |
339 | ||
c374e00e SW |
340 | config PPC_EARLY_DEBUG_CPM_ADDR |
341 | hex "CPM UART early debug transmit descriptor address" | |
342 | depends on PPC_EARLY_DEBUG_CPM | |
15f8c604 | 343 | default "0xfa202008" if PPC_EP88XC |
c2dd3529 | 344 | default "0xf0001ff8" if CPM2 |
15f8c604 | 345 | default "0xff002008" if CPM1 |
c374e00e SW |
346 | help |
347 | This specifies the address of the transmit descriptor | |
348 | used for early debug output. Because it is needed before | |
349 | platform probing is done, all platforms selected must | |
350 | share the same address. | |
351 | ||
d6b9a81b AB |
352 | config FAIL_IOMMU |
353 | bool "Fault-injection capability for IOMMU" | |
354 | depends on FAULT_INJECTION | |
355 | help | |
356 | Provide fault-injection capability for IOMMU. Each device can | |
357 | be selectively enabled via the fail_iommu property. | |
358 | ||
359 | If you are unsure, say N. | |
360 | ||
8eb07b18 | 361 | config PPC_PTDUMP |
5f017a56 KK |
362 | bool "Export kernel pagetable layout to userspace via debugfs" |
363 | depends on DEBUG_KERNEL && DEBUG_FS | |
364 | help | |
8eb07b18 RG |
365 | This option exports the state of the kernel pagetables to a |
366 | debugfs file. This is only useful for kernel developers who are | |
367 | working in architecture specific areas of the kernel - probably | |
368 | not a good idea to enable this feature in a production kernel. | |
369 | ||
370 | If you are unsure, say N. | |
371 | ||
453d87f6 RC |
372 | config PPC_DEBUG_WX |
373 | bool "Warn on W+X mappings at boot" | |
f509247b | 374 | depends on PPC_PTDUMP && STRICT_KERNEL_RWX |
453d87f6 RC |
375 | help |
376 | Generate a warning if any W+X mappings are found at boot. | |
377 | ||
378 | This is useful for discovering cases where the kernel is leaving | |
379 | W+X mappings after applying NX, as such mappings are a security risk. | |
380 | ||
381 | Note that even if the check fails, your kernel is possibly | |
382 | still fine, as W+X mappings are not a security hole in | |
383 | themselves, what they do is that they make the exploitation | |
384 | of other unfixed kernel bugs easier. | |
385 | ||
386 | There is no runtime or memory usage effect of this option | |
387 | once the kernel has booted up - it's a one time check. | |
388 | ||
389 | If in doubt, say "Y". | |
390 | ||
727f1361 ME |
391 | config PPC_FAST_ENDIAN_SWITCH |
392 | bool "Deprecated fast endian-switch syscall" | |
5f017a56 KK |
393 | depends on DEBUG_KERNEL && PPC_BOOK3S_64 |
394 | help | |
727f1361 | 395 | If you're unsure what this is, say N. |
b4abe38f CL |
396 | |
397 | config KASAN_SHADOW_OFFSET | |
398 | hex | |
399 | depends on KASAN | |
400 | default 0xe0000000 |