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 JUMP_LABEL_FEATURE_CHECKS
64 bool "Enable use of jump label for cpu/mmu_has_feature()"
68 Selecting this options enables use of jump labels for some internal
69 feature checks. This should generate more optimal code for those
72 config FTR_FIXUP_SELFTEST
73 bool "Run self-tests of the feature-fixup code"
74 depends on DEBUG_KERNEL
77 config MSI_BITMAP_SELFTEST
78 bool "Run self-tests of the MSI bitmap code"
79 depends on DEBUG_KERNEL
83 bool "Include xmon kernel debugger"
84 depends on DEBUG_KERNEL
86 Include in-kernel hooks for the xmon kernel monitor/debugger.
87 Unless you are intending to debug the kernel, say N here.
88 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
89 nothing will appear on the screen (xmon writes directly to the
91 The cmdline option 'xmon' or 'xmon=early' will drop into xmon
92 very early during boot. 'xmon=on' will just enable the xmon
93 debugger hooks. 'xmon=off' will disable the debugger hooks
94 if CONFIG_XMON_DEFAULT is set.
95 xmon will print a backtrace on the very first invocation.
96 'xmon=nobt' will disable this autobacktrace.
99 bool "Enable xmon by default"
102 xmon is normally disabled unless booted with 'xmon=on'.
103 Use 'xmon=off' to disable xmon init during runtime.
105 config XMON_DISASSEMBLY
106 bool "Include disassembly support in xmon"
110 Include support for disassembling in xmon. You probably want
111 to say Y here, unless you're building for a memory-constrained
116 depends on KGDB || XMON
120 bool "Include BDI-2000 user context switcher"
121 depends on DEBUG_KERNEL && PPC32
123 Include in-kernel support for the Abatron BDI2000 debugger.
124 Unless you are intending to debug the kernel with one of these
125 machines, say N here.
128 bool "Support for early boot text console (BootX or OpenFirmware only)"
129 depends on PPC_BOOK3S
131 Say Y here to see progress messages from the boot firmware in text
132 mode. Requires either BootX or Open Firmware.
134 config PPC_EARLY_DEBUG
135 bool "Early debugging (dangerous)"
137 Say Y to enable some early debugging facilities that may be available
138 for your processor/board combination. Those facilities are hacks
139 intended to debug problems early during boot, this should not be
140 enabled in a production kernel.
141 Note that enabling this will also cause the kernel default log level
142 to be pushed to max automatically very early during boot
145 prompt "Early debugging console"
146 depends on PPC_EARLY_DEBUG
148 Use the selected console for early debugging. Careful, if you
149 enable debugging for the wrong type of machine your kernel
152 config PPC_EARLY_DEBUG_BOOTX
153 bool "BootX or OpenFirmware"
154 depends on BOOTX_TEXT
156 Select this to enable early debugging for a machine using BootX
159 config PPC_EARLY_DEBUG_LPAR
160 bool "LPAR HV Console"
161 depends on PPC_PSERIES && HVC_CONSOLE
163 Select this to enable early debugging for a machine with a HVC
166 config PPC_EARLY_DEBUG_LPAR_HVSI
167 bool "LPAR HVSI Console"
168 depends on PPC_PSERIES && HVC_CONSOLE
170 Select this to enable early debugging for a machine with a HVSI
171 console on a specified vterm.
173 config PPC_EARLY_DEBUG_G5
175 depends on PPC_PMAC64
177 Select this to enable early debugging for Apple G5 machines.
179 config PPC_EARLY_DEBUG_RTAS_PANEL
183 Select this to enable early debugging via the RTAS panel.
185 config PPC_EARLY_DEBUG_RTAS_CONSOLE
188 select UDBG_RTAS_CONSOLE
190 Select this to enable early debugging via the RTAS console.
192 config PPC_EARLY_DEBUG_MAPLE
193 bool "Maple real mode"
196 Select this to enable early debugging for Maple.
198 config PPC_EARLY_DEBUG_PAS_REALMODE
199 bool "PA Semi real mode"
200 depends on PPC_PASEMI
202 Select this to enable early debugging for PA Semi.
203 Output will be on UART0.
205 config PPC_EARLY_DEBUG_44x
206 bool "Early serial debugging for IBM/AMCC 44x CPUs"
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
225 Select this to enable early debugging for Freescale chips
226 using a CPM-based serial port. This assumes that the bootwrapper
227 has run, and set up the CPM in a particular way.
229 config PPC_EARLY_DEBUG_USBGECKO
230 bool "Early debugging through the USB Gecko adapter"
231 depends on GAMECUBE_COMMON
234 Select this to enable early debugging for Nintendo GameCube/Wii
235 consoles via an external USB Gecko adapter.
237 config PPC_EARLY_DEBUG_PS3GELIC
238 bool "Early debugging through the PS3 Ethernet port"
242 Select this to enable early debugging for the PlayStation3 via
243 UDP broadcasts sent out through the Ethernet port.
245 config PPC_EARLY_DEBUG_OPAL_RAW
246 bool "OPAL raw console"
249 Select this to enable early debugging for the PowerNV platform
250 using a "raw" console
252 config PPC_EARLY_DEBUG_OPAL_HVSI
253 bool "OPAL hvsi console"
256 Select this to enable early debugging for the PowerNV platform
257 using an "hvsi" console
259 config PPC_EARLY_DEBUG_MEMCONS
260 bool "In memory console"
262 Select this to enable early debugging using an in memory console.
263 This console provides input and output buffers stored within the
264 kernel BSS and should be safe to select on any system. A debugger
265 can then be used to read kernel output or send input to the console.
268 config PPC_MEMCONS_OUTPUT_SIZE
269 int "In memory console output buffer size"
270 depends on PPC_EARLY_DEBUG_MEMCONS
273 Selects the size of the output buffer (in bytes) of the in memory
276 config PPC_MEMCONS_INPUT_SIZE
277 int "In memory console input buffer size"
278 depends on PPC_EARLY_DEBUG_MEMCONS
281 Selects the size of the input buffer (in bytes) of the in memory
284 config PPC_EARLY_DEBUG_OPAL
286 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
289 config PPC_EARLY_DEBUG_HVSI_VTERMNO
290 hex "vterm number to use with early debug HVSI"
291 depends on PPC_EARLY_DEBUG_LPAR_HVSI
294 You probably want 0x30000000 for your first serial port and
295 0x30000001 for your second one
297 config PPC_EARLY_DEBUG_OPAL_VTERMNO
298 hex "vterm number to use with OPAL early debug"
299 depends on PPC_EARLY_DEBUG_OPAL
302 This correspond to which /dev/hvcN you want to use for early
305 On OPAL v2, this will be 0 for network console and 1 or 2 for
306 the machine built-in serial ports.
308 config PPC_EARLY_DEBUG_44x_PHYSLOW
309 hex "Low 32 bits of early debug UART physical address"
310 depends on PPC_EARLY_DEBUG_44x
313 You probably want 0x40000200 for ebony boards and
314 0x40000300 for taishan
316 config PPC_EARLY_DEBUG_44x_PHYSHIGH
317 hex "EPRN of early debug UART physical address"
318 depends on PPC_EARLY_DEBUG_44x
321 config PPC_EARLY_DEBUG_40x_PHYSADDR
322 hex "Early debug UART physical address"
323 depends on PPC_EARLY_DEBUG_40x
326 config PPC_EARLY_DEBUG_CPM_ADDR
327 hex "CPM UART early debug transmit descriptor address"
328 depends on PPC_EARLY_DEBUG_CPM
329 default "0xfa202008" if PPC_EP88XC
330 default "0xf0001ff8" if CPM2
331 default "0xff002008" if CPM1
333 This specifies the address of the transmit descriptor
334 used for early debug output. Because it is needed before
335 platform probing is done, all platforms selected must
336 share the same address.
339 bool "Fault-injection capability for IOMMU"
340 depends on FAULT_INJECTION
342 Provide fault-injection capability for IOMMU. Each device can
343 be selectively enabled via the fail_iommu property.
345 If you are unsure, say N.