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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 | ||
ff64208d PM |
31 | config DEBUG_STACKOVERFLOW |
32 | bool "Check for stack overflows" | |
304df8f7 | 33 | depends on DEBUG_KERNEL |
ff64208d PM |
34 | help |
35 | This option will cause messages to be printed if free stack space | |
36 | drops below a certain limit. | |
37 | ||
57852a85 MK |
38 | config HCALL_STATS |
39 | bool "Hypervisor call instrumentation" | |
c8cd093a | 40 | depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS |
57852a85 MK |
41 | help |
42 | Adds code to keep track of the number of hypervisor calls made and | |
3dde6ad8 | 43 | the amount of time spent in hypervisor calls. Wall time spent in |
57852a85 MK |
44 | each call is always calculated, and if available CPU cycles spent |
45 | are also calculated. A directory named hcall_inst is added at the | |
46 | root of the debugfs filesystem. Within the hcall_inst directory | |
47 | are files that contain CPU specific call statistics. | |
48 | ||
49 | This option will add a small amount of overhead to all hypervisor | |
50 | calls. | |
51 | ||
80947e7c GU |
52 | config PPC_EMULATED_STATS |
53 | bool "Emulated instructions tracking" | |
54 | depends on DEBUG_FS | |
55 | help | |
56 | Adds code to keep track of the number of instructions that are | |
57 | emulated by the in-kernel emulator. Counters for the various classes | |
58 | of emulated instructions are available under | |
59 | powerpc/emulated_instructions/ in the root of the debugfs file | |
60 | system. Optionally (controlled by | |
61 | powerpc/emulated_instructions/do_warn in debugfs), rate-limited | |
62 | warnings can be printed to the console when instructions are | |
63 | emulated. | |
64 | ||
ae0dc736 ME |
65 | config CODE_PATCHING_SELFTEST |
66 | bool "Run self-tests of the code-patching code." | |
67 | depends on DEBUG_KERNEL | |
68 | default n | |
69 | ||
362e7701 ME |
70 | config FTR_FIXUP_SELFTEST |
71 | bool "Run self-tests of the feature-fixup code." | |
72 | depends on DEBUG_KERNEL | |
73 | default n | |
74 | ||
7e302869 ME |
75 | config MSI_BITMAP_SELFTEST |
76 | bool "Run self-tests of the MSI bitmap code." | |
77 | depends on DEBUG_KERNEL | |
78 | default n | |
79 | ||
14cf11af PM |
80 | config XMON |
81 | bool "Include xmon kernel debugger" | |
17ce452f | 82 | depends on DEBUG_KERNEL |
14cf11af PM |
83 | help |
84 | Include in-kernel hooks for the xmon kernel monitor/debugger. | |
85 | Unless you are intending to debug the kernel, say N here. | |
ff64208d PM |
86 | Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise |
87 | nothing will appear on the screen (xmon writes directly to the | |
88 | framebuffer memory). | |
89 | The cmdline option 'xmon' or 'xmon=early' will drop into xmon | |
90 | very early during boot. 'xmon=on' will just enable the xmon | |
91 | debugger hooks. 'xmon=off' will disable the debugger hooks | |
92 | if CONFIG_XMON_DEFAULT is set. | |
26c8af5f OH |
93 | xmon will print a backtrace on the very first invocation. |
94 | 'xmon=nobt' will disable this autobacktrace. | |
ff64208d PM |
95 | |
96 | config XMON_DEFAULT | |
97 | bool "Enable xmon by default" | |
98 | depends on XMON | |
99 | help | |
100 | xmon is normally disabled unless booted with 'xmon=on'. | |
101 | Use 'xmon=off' to disable xmon init during runtime. | |
102 | ||
e0426047 ME |
103 | config XMON_DISASSEMBLY |
104 | bool "Include disassembly support in xmon" | |
105 | depends on XMON | |
106 | default y | |
107 | help | |
108 | Include support for disassembling in xmon. You probably want | |
109 | to say Y here, unless you're building for a memory-constrained | |
110 | system. | |
111 | ||
17ce452f JW |
112 | config DEBUGGER |
113 | bool | |
114 | depends on KGDB || XMON | |
115 | default y | |
116 | ||
60b332e7 ME |
117 | config VIRQ_DEBUG |
118 | bool "Expose hardware/virtual IRQ mapping via debugfs" | |
9c4cb825 | 119 | depends on DEBUG_FS |
60b332e7 ME |
120 | help |
121 | This option will show the mapping relationship between hardware irq | |
122 | numbers and virtual irq numbers. The mapping is exposed via debugfs | |
123 | in the file powerpc/virq_mapping. | |
124 | ||
125 | If you don't know what this means you don't need it. | |
126 | ||
14cf11af PM |
127 | config BDI_SWITCH |
128 | bool "Include BDI-2000 user context switcher" | |
ff64208d | 129 | depends on DEBUG_KERNEL && PPC32 |
14cf11af PM |
130 | help |
131 | Include in-kernel support for the Abatron BDI2000 debugger. | |
132 | Unless you are intending to debug the kernel with one of these | |
133 | machines, say N here. | |
134 | ||
135 | config BOOTX_TEXT | |
136 | bool "Support for early boot text console (BootX or OpenFirmware only)" | |
28794d34 | 137 | depends on PPC_OF && PPC_BOOK3S |
14cf11af PM |
138 | help |
139 | Say Y here to see progress messages from the boot firmware in text | |
140 | mode. Requires either BootX or Open Firmware. | |
141 | ||
485a2d54 ME |
142 | config PPC_EARLY_DEBUG |
143 | bool "Early debugging (dangerous)" | |
bbf45ba5 HB |
144 | # PPC_EARLY_DEBUG on 440 leaves AS=1 mappings above the TLB high water |
145 | # mark, which doesn't work with current 440 KVM. | |
146 | depends on !KVM | |
7ee17466 BH |
147 | help |
148 | Say Y to enable some early debugging facilities that may be available | |
149 | for your processor/board combination. Those facilities are hacks | |
150 | intended to debug problems early during boot, this should not be | |
151 | enabled in a production kernel. | |
152 | Note that enabling this will also cause the kernel default log level | |
153 | to be pushed to max automatically very early during boot | |
485a2d54 | 154 | |
296167ae | 155 | choice |
485a2d54 ME |
156 | prompt "Early debugging console" |
157 | depends on PPC_EARLY_DEBUG | |
296167ae | 158 | help |
485a2d54 ME |
159 | Use the selected console for early debugging. Careful, if you |
160 | enable debugging for the wrong type of machine your kernel | |
161 | _will not boot_. | |
296167ae ME |
162 | |
163 | config PPC_EARLY_DEBUG_LPAR | |
164 | bool "LPAR HV Console" | |
165 | depends on PPC_PSERIES | |
166 | help | |
167 | Select this to enable early debugging for a machine with a HVC | |
168 | console on vterm 0. | |
169 | ||
4d2bb3f5 BH |
170 | config PPC_EARLY_DEBUG_LPAR_HVSI |
171 | bool "LPAR HVSI Console" | |
172 | depends on PPC_PSERIES | |
173 | help | |
174 | Select this to enable early debugging for a machine with a HVSI | |
175 | console on a specified vterm. | |
176 | ||
296167ae ME |
177 | config PPC_EARLY_DEBUG_G5 |
178 | bool "Apple G5" | |
179 | depends on PPC_PMAC64 | |
180 | help | |
181 | Select this to enable early debugging for Apple G5 machines. | |
182 | ||
cc46bb98 | 183 | config PPC_EARLY_DEBUG_RTAS_PANEL |
296167ae ME |
184 | bool "RTAS Panel" |
185 | depends on PPC_RTAS | |
186 | help | |
187 | Select this to enable early debugging via the RTAS panel. | |
188 | ||
cc46bb98 ME |
189 | config PPC_EARLY_DEBUG_RTAS_CONSOLE |
190 | bool "RTAS Console" | |
191 | depends on PPC_RTAS | |
192 | select UDBG_RTAS_CONSOLE | |
193 | help | |
194 | Select this to enable early debugging via the RTAS console. | |
195 | ||
296167ae ME |
196 | config PPC_EARLY_DEBUG_MAPLE |
197 | bool "Maple real mode" | |
198 | depends on PPC_MAPLE | |
199 | help | |
200 | Select this to enable early debugging for Maple. | |
201 | ||
202 | config PPC_EARLY_DEBUG_ISERIES | |
203 | bool "iSeries HV Console" | |
204 | depends on PPC_ISERIES | |
205 | help | |
206 | Select this to enable early debugging for legacy iSeries. You need | |
207 | to hit "Ctrl-x Ctrl-x" to see the messages on the console. | |
208 | ||
39c870d5 OJ |
209 | config PPC_EARLY_DEBUG_PAS_REALMODE |
210 | bool "PA Semi real mode" | |
211 | depends on PPC_PASEMI | |
212 | help | |
213 | Select this to enable early debugging for PA Semi. | |
214 | Output will be on UART0. | |
215 | ||
c347b798 IK |
216 | config PPC_EARLY_DEBUG_BEAT |
217 | bool "Beat HV Console" | |
218 | depends on PPC_CELLEB | |
219 | select PPC_UDBG_BEAT | |
220 | help | |
221 | Select this to enable early debugging for Celleb with Beat. | |
222 | ||
d9b55a03 DG |
223 | config PPC_EARLY_DEBUG_44x |
224 | bool "Early serial debugging for IBM/AMCC 44x CPUs" | |
225 | depends on 44x | |
d9b55a03 DG |
226 | help |
227 | Select this to enable early debugging for IBM 44x chips via the | |
6bbc5476 HB |
228 | inbuilt serial port. If you enable this, ensure you set |
229 | PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board. | |
d9b55a03 | 230 | |
9dae8afd BH |
231 | config PPC_EARLY_DEBUG_40x |
232 | bool "Early serial debugging for IBM/AMCC 40x CPUs" | |
233 | depends on 40x | |
234 | help | |
235 | Select this to enable early debugging for IBM 40x chips via the | |
236 | inbuilt serial port. This works on chips with a 16550 compatible | |
237 | UART. Xilinx chips with uartlite cannot use this option. | |
238 | ||
c374e00e SW |
239 | config PPC_EARLY_DEBUG_CPM |
240 | bool "Early serial debugging for Freescale CPM-based serial ports" | |
241 | depends on SERIAL_CPM | |
242 | select PIN_TLB if PPC_8xx | |
243 | help | |
244 | Select this to enable early debugging for Freescale chips | |
245 | using a CPM-based serial port. This assumes that the bootwrapper | |
246 | has run, and set up the CPM in a particular way. | |
247 | ||
d1d56f8c AH |
248 | config PPC_EARLY_DEBUG_USBGECKO |
249 | bool "Early debugging through the USB Gecko adapter" | |
250 | depends on GAMECUBE_COMMON | |
251 | select USBGECKO_UDBG | |
252 | help | |
253 | Select this to enable early debugging for Nintendo GameCube/Wii | |
254 | consoles via an external USB Gecko adapter. | |
255 | ||
a0496d45 JM |
256 | config PPC_EARLY_DEBUG_WSP |
257 | bool "Early debugging via WSP's internal UART" | |
258 | depends on PPC_WSP | |
259 | select PPC_UDBG_16550 | |
260 | ||
c26afe9e HM |
261 | config PPC_EARLY_DEBUG_PS3GELIC |
262 | bool "Early debugging through the PS3 Ethernet port" | |
263 | depends on PPC_PS3 | |
264 | select PS3GELIC_UDBG | |
265 | help | |
266 | Select this to enable early debugging for the PlayStation3 via | |
267 | UDP broadcasts sent out through the Ethernet port. | |
268 | ||
296167ae ME |
269 | endchoice |
270 | ||
4d2bb3f5 BH |
271 | config PPC_EARLY_DEBUG_HVSI_VTERMNO |
272 | hex "vterm number to use with early debug HVSI" | |
273 | depends on PPC_EARLY_DEBUG_LPAR_HVSI | |
274 | default "0x30000000" | |
275 | help | |
276 | You probably want 0x30000000 for your first serial port and | |
277 | 0x30000001 for your second one | |
278 | ||
d9b55a03 DG |
279 | config PPC_EARLY_DEBUG_44x_PHYSLOW |
280 | hex "Low 32 bits of early debug UART physical address" | |
247537b9 | 281 | depends on PPC_EARLY_DEBUG_44x |
d9b55a03 | 282 | default "0x40000200" |
6bbc5476 HB |
283 | help |
284 | You probably want 0x40000200 for ebony boards and | |
285 | 0x40000300 for taishan | |
d9b55a03 DG |
286 | |
287 | config PPC_EARLY_DEBUG_44x_PHYSHIGH | |
288 | hex "EPRN of early debug UART physical address" | |
247537b9 | 289 | depends on PPC_EARLY_DEBUG_44x |
d9b55a03 DG |
290 | default "0x1" |
291 | ||
9dae8afd BH |
292 | config PPC_EARLY_DEBUG_40x_PHYSADDR |
293 | hex "Early debug UART physical address" | |
294 | depends on PPC_EARLY_DEBUG_40x | |
295 | default "0xef600300" | |
296 | ||
c374e00e SW |
297 | config PPC_EARLY_DEBUG_CPM_ADDR |
298 | hex "CPM UART early debug transmit descriptor address" | |
299 | depends on PPC_EARLY_DEBUG_CPM | |
15f8c604 | 300 | default "0xfa202008" if PPC_EP88XC |
c2dd3529 | 301 | default "0xf0001ff8" if CPM2 |
15f8c604 | 302 | default "0xff002008" if CPM1 |
c374e00e SW |
303 | help |
304 | This specifies the address of the transmit descriptor | |
305 | used for early debug output. Because it is needed before | |
306 | platform probing is done, all platforms selected must | |
307 | share the same address. | |
308 | ||
14cf11af | 309 | endmenu |