3 source "lib/Kconfig.debug"
5 config PPC_DISABLE_WERROR
6 bool "Don't build arch/powerpc code with -Werror"
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).
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
19 depends on !PPC_DISABLE_WERROR
22 config PRINT_STACK_DEPTH
23 int "Stack depth to print" if DEBUG_KERNEL
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.
31 config DEBUG_STACKOVERFLOW
32 bool "Check for stack overflows"
33 depends on DEBUG_KERNEL
35 This option will cause messages to be printed if free stack space
36 drops below a certain limit.
39 bool "Hypervisor call instrumentation"
40 depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
42 Adds code to keep track of the number of hypervisor calls made and
43 the amount of time spent in hypervisor calls. Wall time spent in
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.
49 This option will add a small amount of overhead to all hypervisor
52 config PPC_EMULATED_STATS
53 bool "Emulated instructions tracking"
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
65 config CODE_PATCHING_SELFTEST
66 bool "Run self-tests of the code-patching code."
67 depends on DEBUG_KERNEL
70 config FTR_FIXUP_SELFTEST
71 bool "Run self-tests of the feature-fixup code."
72 depends on DEBUG_KERNEL
75 config MSI_BITMAP_SELFTEST
76 bool "Run self-tests of the MSI bitmap code."
77 depends on DEBUG_KERNEL
81 bool "Include xmon kernel debugger"
82 depends on DEBUG_KERNEL
84 Include in-kernel hooks for the xmon kernel monitor/debugger.
85 Unless you are intending to debug the kernel, say N here.
86 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
87 nothing will appear on the screen (xmon writes directly to the
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.
93 xmon will print a backtrace on the very first invocation.
94 'xmon=nobt' will disable this autobacktrace.
97 bool "Enable xmon by default"
100 xmon is normally disabled unless booted with 'xmon=on'.
101 Use 'xmon=off' to disable xmon init during runtime.
103 config XMON_DISASSEMBLY
104 bool "Include disassembly support in xmon"
108 Include support for disassembling in xmon. You probably want
109 to say Y here, unless you're building for a memory-constrained
114 depends on KGDB || XMON
118 bool "Include BDI-2000 user context switcher"
119 depends on DEBUG_KERNEL && PPC32
121 Include in-kernel support for the Abatron BDI2000 debugger.
122 Unless you are intending to debug the kernel with one of these
123 machines, say N here.
126 bool "Support for early boot text console (BootX or OpenFirmware only)"
127 depends on PPC_OF && PPC_BOOK3S
129 Say Y here to see progress messages from the boot firmware in text
130 mode. Requires either BootX or Open Firmware.
132 config PPC_EARLY_DEBUG
133 bool "Early debugging (dangerous)"
135 Say Y to enable some early debugging facilities that may be available
136 for your processor/board combination. Those facilities are hacks
137 intended to debug problems early during boot, this should not be
138 enabled in a production kernel.
139 Note that enabling this will also cause the kernel default log level
140 to be pushed to max automatically very early during boot
143 prompt "Early debugging console"
144 depends on PPC_EARLY_DEBUG
146 Use the selected console for early debugging. Careful, if you
147 enable debugging for the wrong type of machine your kernel
150 config PPC_EARLY_DEBUG_LPAR
151 bool "LPAR HV Console"
152 depends on PPC_PSERIES
154 Select this to enable early debugging for a machine with a HVC
157 config PPC_EARLY_DEBUG_LPAR_HVSI
158 bool "LPAR HVSI Console"
159 depends on PPC_PSERIES
161 Select this to enable early debugging for a machine with a HVSI
162 console on a specified vterm.
164 config PPC_EARLY_DEBUG_G5
166 depends on PPC_PMAC64
168 Select this to enable early debugging for Apple G5 machines.
170 config PPC_EARLY_DEBUG_RTAS_PANEL
174 Select this to enable early debugging via the RTAS panel.
176 config PPC_EARLY_DEBUG_RTAS_CONSOLE
179 select UDBG_RTAS_CONSOLE
181 Select this to enable early debugging via the RTAS console.
183 config PPC_EARLY_DEBUG_MAPLE
184 bool "Maple real mode"
187 Select this to enable early debugging for Maple.
189 config PPC_EARLY_DEBUG_PAS_REALMODE
190 bool "PA Semi real mode"
191 depends on PPC_PASEMI
193 Select this to enable early debugging for PA Semi.
194 Output will be on UART0.
196 config PPC_EARLY_DEBUG_BEAT
197 bool "Beat HV Console"
198 depends on PPC_CELLEB
201 Select this to enable early debugging for Celleb with Beat.
203 config PPC_EARLY_DEBUG_44x
204 bool "Early serial debugging for IBM/AMCC 44x CPUs"
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
209 Select this to enable early debugging for IBM 44x chips via the
210 inbuilt serial port. If you enable this, ensure you set
211 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
213 config PPC_EARLY_DEBUG_40x
214 bool "Early serial debugging for IBM/AMCC 40x CPUs"
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.
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
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.
230 config PPC_EARLY_DEBUG_USBGECKO
231 bool "Early debugging through the USB Gecko adapter"
232 depends on GAMECUBE_COMMON
235 Select this to enable early debugging for Nintendo GameCube/Wii
236 consoles via an external USB Gecko adapter.
238 config PPC_EARLY_DEBUG_WSP
239 bool "Early debugging via WSP's internal UART"
241 select PPC_UDBG_16550
243 config PPC_EARLY_DEBUG_PS3GELIC
244 bool "Early debugging through the PS3 Ethernet port"
248 Select this to enable early debugging for the PlayStation3 via
249 UDP broadcasts sent out through the Ethernet port.
251 config PPC_EARLY_DEBUG_OPAL_RAW
252 bool "OPAL raw console"
255 Select this to enable early debugging for the PowerNV platform
256 using a "raw" console
258 config PPC_EARLY_DEBUG_OPAL_HVSI
259 bool "OPAL hvsi console"
262 Select this to enable early debugging for the PowerNV platform
263 using an "hvsi" console
267 config PPC_EARLY_DEBUG_OPAL
269 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
272 config PPC_EARLY_DEBUG_HVSI_VTERMNO
273 hex "vterm number to use with early debug HVSI"
274 depends on PPC_EARLY_DEBUG_LPAR_HVSI
277 You probably want 0x30000000 for your first serial port and
278 0x30000001 for your second one
280 config PPC_EARLY_DEBUG_OPAL_VTERMNO
281 hex "vterm number to use with OPAL early debug"
282 depends on PPC_EARLY_DEBUG_OPAL
285 This correspond to which /dev/hvcN you want to use for early
288 On OPAL v1 (takeover) this should always be 0
289 On OPAL v2, this will be 0 for network console and 1 or 2 for
290 the machine built-in serial ports.
292 config PPC_EARLY_DEBUG_44x_PHYSLOW
293 hex "Low 32 bits of early debug UART physical address"
294 depends on PPC_EARLY_DEBUG_44x
297 You probably want 0x40000200 for ebony boards and
298 0x40000300 for taishan
300 config PPC_EARLY_DEBUG_44x_PHYSHIGH
301 hex "EPRN of early debug UART physical address"
302 depends on PPC_EARLY_DEBUG_44x
305 config PPC_EARLY_DEBUG_40x_PHYSADDR
306 hex "Early debug UART physical address"
307 depends on PPC_EARLY_DEBUG_40x
310 config PPC_EARLY_DEBUG_CPM_ADDR
311 hex "CPM UART early debug transmit descriptor address"
312 depends on PPC_EARLY_DEBUG_CPM
313 default "0xfa202008" if PPC_EP88XC
314 default "0xf0001ff8" if CPM2
315 default "0xff002008" if CPM1
317 This specifies the address of the transmit descriptor
318 used for early debug output. Because it is needed before
319 platform probing is done, all platforms selected must
320 share the same address.
324 prompt "Filter access to /dev/mem"
326 This option restricts access to /dev/mem. If this option is
327 disabled, you allow userspace access to all memory, including
328 kernel and userspace memory. Accidental memory access is likely
330 Memory access is required for experts who want to debug the kernel.
332 If you are unsure, say Y.
335 bool "Fault-injection capability for IOMMU"
336 depends on FAULT_INJECTION
338 Provide fault-injection capability for IOMMU. Each device can
339 be selectively enabled via the fail_iommu property.
341 If you are unsure, say N.