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.
32 bool "Hypervisor call instrumentation"
33 depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
35 Adds code to keep track of the number of hypervisor calls made and
36 the amount of time spent in hypervisor calls. Wall time spent in
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.
42 This option will add a small amount of overhead to all hypervisor
45 config PPC_EMULATED_STATS
46 bool "Emulated instructions tracking"
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
58 config CODE_PATCHING_SELFTEST
59 bool "Run self-tests of the code-patching code."
60 depends on DEBUG_KERNEL
63 config FTR_FIXUP_SELFTEST
64 bool "Run self-tests of the feature-fixup code."
65 depends on DEBUG_KERNEL
68 config MSI_BITMAP_SELFTEST
69 bool "Run self-tests of the MSI bitmap code."
70 depends on DEBUG_KERNEL
74 bool "Include xmon kernel debugger"
75 depends on DEBUG_KERNEL
77 Include in-kernel hooks for the xmon kernel monitor/debugger.
78 Unless you are intending to debug the kernel, say N here.
79 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
80 nothing will appear on the screen (xmon writes directly to the
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.
86 xmon will print a backtrace on the very first invocation.
87 'xmon=nobt' will disable this autobacktrace.
90 bool "Enable xmon by default"
93 xmon is normally disabled unless booted with 'xmon=on'.
94 Use 'xmon=off' to disable xmon init during runtime.
96 config XMON_DISASSEMBLY
97 bool "Include disassembly support in xmon"
101 Include support for disassembling in xmon. You probably want
102 to say Y here, unless you're building for a memory-constrained
107 depends on KGDB || XMON
111 bool "Include BDI-2000 user context switcher"
112 depends on DEBUG_KERNEL && PPC32
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.
119 bool "Support for early boot text console (BootX or OpenFirmware only)"
120 depends on PPC_OF && PPC_BOOK3S
122 Say Y here to see progress messages from the boot firmware in text
123 mode. Requires either BootX or Open Firmware.
125 config PPC_EARLY_DEBUG
126 bool "Early debugging (dangerous)"
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
136 prompt "Early debugging console"
137 depends on PPC_EARLY_DEBUG
139 Use the selected console for early debugging. Careful, if you
140 enable debugging for the wrong type of machine your kernel
143 config PPC_EARLY_DEBUG_BOOTX
144 bool "BootX or OpenFirmware"
145 depends on BOOTX_TEXT
147 Select this to enable early debugging for a machine using BootX
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_PS3GELIC
239 bool "Early debugging through the PS3 Ethernet port"
243 Select this to enable early debugging for the PlayStation3 via
244 UDP broadcasts sent out through the Ethernet port.
246 config PPC_EARLY_DEBUG_OPAL_RAW
247 bool "OPAL raw console"
250 Select this to enable early debugging for the PowerNV platform
251 using a "raw" console
253 config PPC_EARLY_DEBUG_OPAL_HVSI
254 bool "OPAL hvsi console"
257 Select this to enable early debugging for the PowerNV platform
258 using an "hvsi" console
260 config PPC_EARLY_DEBUG_MEMCONS
261 bool "In memory console"
263 Select this to enable early debugging using an in memory console.
264 This console provides input and output buffers stored within the
265 kernel BSS and should be safe to select on any system. A debugger
266 can then be used to read kernel output or send input to the console.
269 config PPC_MEMCONS_OUTPUT_SIZE
270 int "In memory console output buffer size"
271 depends on PPC_EARLY_DEBUG_MEMCONS
274 Selects the size of the output buffer (in bytes) of the in memory
277 config PPC_MEMCONS_INPUT_SIZE
278 int "In memory console input buffer size"
279 depends on PPC_EARLY_DEBUG_MEMCONS
282 Selects the size of the input buffer (in bytes) of the in memory
285 config PPC_EARLY_DEBUG_OPAL
287 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
290 config PPC_EARLY_DEBUG_HVSI_VTERMNO
291 hex "vterm number to use with early debug HVSI"
292 depends on PPC_EARLY_DEBUG_LPAR_HVSI
295 You probably want 0x30000000 for your first serial port and
296 0x30000001 for your second one
298 config PPC_EARLY_DEBUG_OPAL_VTERMNO
299 hex "vterm number to use with OPAL early debug"
300 depends on PPC_EARLY_DEBUG_OPAL
303 This correspond to which /dev/hvcN you want to use for early
306 On OPAL v1 (takeover) this should always be 0
307 On OPAL v2, this will be 0 for network console and 1 or 2 for
308 the machine built-in serial ports.
310 config PPC_EARLY_DEBUG_44x_PHYSLOW
311 hex "Low 32 bits of early debug UART physical address"
312 depends on PPC_EARLY_DEBUG_44x
315 You probably want 0x40000200 for ebony boards and
316 0x40000300 for taishan
318 config PPC_EARLY_DEBUG_44x_PHYSHIGH
319 hex "EPRN of early debug UART physical address"
320 depends on PPC_EARLY_DEBUG_44x
323 config PPC_EARLY_DEBUG_40x_PHYSADDR
324 hex "Early debug UART physical address"
325 depends on PPC_EARLY_DEBUG_40x
328 config PPC_EARLY_DEBUG_CPM_ADDR
329 hex "CPM UART early debug transmit descriptor address"
330 depends on PPC_EARLY_DEBUG_CPM
331 default "0xfa202008" if PPC_EP88XC
332 default "0xf0001ff8" if CPM2
333 default "0xff002008" if CPM1
335 This specifies the address of the transmit descriptor
336 used for early debug output. Because it is needed before
337 platform probing is done, all platforms selected must
338 share the same address.
342 prompt "Filter access to /dev/mem"
344 This option restricts access to /dev/mem. If this option is
345 disabled, you allow userspace access to all memory, including
346 kernel and userspace memory. Accidental memory access is likely
348 Memory access is required for experts who want to debug the kernel.
350 If you are unsure, say Y.
353 bool "Fault-injection capability for IOMMU"
354 depends on FAULT_INJECTION
356 Provide fault-injection capability for IOMMU. Each device can
357 be selectively enabled via the fail_iommu property.
359 If you are unsure, say N.