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 STRICT_MM_TYPECHECKS
23 bool "Do extra type checking on mm types"
26 This option turns on extra type checking for some mm related types.
28 If you don't know what this means, say N.
30 config PRINT_STACK_DEPTH
31 int "Stack depth to print" if DEBUG_KERNEL
34 This option allows you to set the stack depth that the kernel
35 prints in stack traces. This can be useful if your display is
36 too small and stack traces cause important information to
37 scroll off the screen.
40 bool "Hypervisor call instrumentation"
41 depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
43 Adds code to keep track of the number of hypervisor calls made and
44 the amount of time spent in hypervisor calls. Wall time spent in
45 each call is always calculated, and if available CPU cycles spent
46 are also calculated. A directory named hcall_inst is added at the
47 root of the debugfs filesystem. Within the hcall_inst directory
48 are files that contain CPU specific call statistics.
50 This option will add a small amount of overhead to all hypervisor
53 config PPC_EMULATED_STATS
54 bool "Emulated instructions tracking"
57 Adds code to keep track of the number of instructions that are
58 emulated by the in-kernel emulator. Counters for the various classes
59 of emulated instructions are available under
60 powerpc/emulated_instructions/ in the root of the debugfs file
61 system. Optionally (controlled by
62 powerpc/emulated_instructions/do_warn in debugfs), rate-limited
63 warnings can be printed to the console when instructions are
66 config CODE_PATCHING_SELFTEST
67 bool "Run self-tests of the code-patching code."
68 depends on DEBUG_KERNEL
71 config FTR_FIXUP_SELFTEST
72 bool "Run self-tests of the feature-fixup code."
73 depends on DEBUG_KERNEL
76 config MSI_BITMAP_SELFTEST
77 bool "Run self-tests of the MSI bitmap code."
78 depends on DEBUG_KERNEL
82 bool "Include xmon kernel debugger"
83 depends on DEBUG_KERNEL
85 Include in-kernel hooks for the xmon kernel monitor/debugger.
86 Unless you are intending to debug the kernel, say N here.
87 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
88 nothing will appear on the screen (xmon writes directly to the
90 The cmdline option 'xmon' or 'xmon=early' will drop into xmon
91 very early during boot. 'xmon=on' will just enable the xmon
92 debugger hooks. 'xmon=off' will disable the debugger hooks
93 if CONFIG_XMON_DEFAULT is set.
94 xmon will print a backtrace on the very first invocation.
95 'xmon=nobt' will disable this autobacktrace.
98 bool "Enable xmon by default"
101 xmon is normally disabled unless booted with 'xmon=on'.
102 Use 'xmon=off' to disable xmon init during runtime.
104 config XMON_DISASSEMBLY
105 bool "Include disassembly support in xmon"
109 Include support for disassembling in xmon. You probably want
110 to say Y here, unless you're building for a memory-constrained
115 depends on KGDB || XMON
119 bool "Include BDI-2000 user context switcher"
120 depends on DEBUG_KERNEL && PPC32
122 Include in-kernel support for the Abatron BDI2000 debugger.
123 Unless you are intending to debug the kernel with one of these
124 machines, say N here.
127 bool "Support for early boot text console (BootX or OpenFirmware only)"
128 depends on PPC_BOOK3S
130 Say Y here to see progress messages from the boot firmware in text
131 mode. Requires either BootX or Open Firmware.
133 config PPC_EARLY_DEBUG
134 bool "Early debugging (dangerous)"
136 Say Y to enable some early debugging facilities that may be available
137 for your processor/board combination. Those facilities are hacks
138 intended to debug problems early during boot, this should not be
139 enabled in a production kernel.
140 Note that enabling this will also cause the kernel default log level
141 to be pushed to max automatically very early during boot
144 prompt "Early debugging console"
145 depends on PPC_EARLY_DEBUG
147 Use the selected console for early debugging. Careful, if you
148 enable debugging for the wrong type of machine your kernel
151 config PPC_EARLY_DEBUG_BOOTX
152 bool "BootX or OpenFirmware"
153 depends on BOOTX_TEXT
155 Select this to enable early debugging for a machine using BootX
158 config PPC_EARLY_DEBUG_LPAR
159 bool "LPAR HV Console"
160 depends on PPC_PSERIES
162 Select this to enable early debugging for a machine with a HVC
165 config PPC_EARLY_DEBUG_LPAR_HVSI
166 bool "LPAR HVSI Console"
167 depends on PPC_PSERIES
169 Select this to enable early debugging for a machine with a HVSI
170 console on a specified vterm.
172 config PPC_EARLY_DEBUG_G5
174 depends on PPC_PMAC64
176 Select this to enable early debugging for Apple G5 machines.
178 config PPC_EARLY_DEBUG_RTAS_PANEL
182 Select this to enable early debugging via the RTAS panel.
184 config PPC_EARLY_DEBUG_RTAS_CONSOLE
187 select UDBG_RTAS_CONSOLE
189 Select this to enable early debugging via the RTAS console.
191 config PPC_EARLY_DEBUG_MAPLE
192 bool "Maple real mode"
195 Select this to enable early debugging for Maple.
197 config PPC_EARLY_DEBUG_PAS_REALMODE
198 bool "PA Semi real mode"
199 depends on PPC_PASEMI
201 Select this to enable early debugging for PA Semi.
202 Output will be on UART0.
204 config PPC_EARLY_DEBUG_44x
205 bool "Early serial debugging for IBM/AMCC 44x CPUs"
208 Select this to enable early debugging for IBM 44x chips via the
209 inbuilt serial port. If you enable this, ensure you set
210 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
212 config PPC_EARLY_DEBUG_40x
213 bool "Early serial debugging for IBM/AMCC 40x CPUs"
216 Select this to enable early debugging for IBM 40x chips via the
217 inbuilt serial port. This works on chips with a 16550 compatible
218 UART. Xilinx chips with uartlite cannot use this option.
220 config PPC_EARLY_DEBUG_CPM
221 bool "Early serial debugging for Freescale CPM-based serial ports"
222 depends on SERIAL_CPM
223 select PIN_TLB if PPC_8xx
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.
340 prompt "Filter access to /dev/mem"
342 This option restricts access to /dev/mem. If this option is
343 disabled, you allow userspace access to all memory, including
344 kernel and userspace memory. Accidental memory access is likely
346 Memory access is required for experts who want to debug the kernel.
348 If you are unsure, say Y.
351 bool "Fault-injection capability for IOMMU"
352 depends on FAULT_INJECTION
354 Provide fault-injection capability for IOMMU. Each device can
355 be selectively enabled via the fail_iommu property.
357 If you are unsure, say N.