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 "Expose hardware/virtual IRQ mapping via debugfs"
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.
125 If you don't know what this means you don't need it.
128 bool "Include BDI-2000 user context switcher"
129 depends on DEBUG_KERNEL && PPC32
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.
136 bool "Support for early boot text console (BootX or OpenFirmware only)"
137 depends on PPC_OF && PPC_BOOK3S
139 Say Y here to see progress messages from the boot firmware in text
140 mode. Requires either BootX or Open Firmware.
142 config PPC_EARLY_DEBUG
143 bool "Early debugging (dangerous)"
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.
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
156 prompt "Early debugging console"
157 depends on PPC_EARLY_DEBUG
159 Use the selected console for early debugging. Careful, if you
160 enable debugging for the wrong type of machine your kernel
163 config PPC_EARLY_DEBUG_LPAR
164 bool "LPAR HV Console"
165 depends on PPC_PSERIES
167 Select this to enable early debugging for a machine with a HVC
170 config PPC_EARLY_DEBUG_G5
172 depends on PPC_PMAC64
174 Select this to enable early debugging for Apple G5 machines.
176 config PPC_EARLY_DEBUG_RTAS_PANEL
180 Select this to enable early debugging via the RTAS panel.
182 config PPC_EARLY_DEBUG_RTAS_CONSOLE
185 select UDBG_RTAS_CONSOLE
187 Select this to enable early debugging via the RTAS console.
189 config PPC_EARLY_DEBUG_MAPLE
190 bool "Maple real mode"
193 Select this to enable early debugging for Maple.
195 config PPC_EARLY_DEBUG_ISERIES
196 bool "iSeries HV Console"
197 depends on PPC_ISERIES
199 Select this to enable early debugging for legacy iSeries. You need
200 to hit "Ctrl-x Ctrl-x" to see the messages on the console.
202 config PPC_EARLY_DEBUG_PAS_REALMODE
203 bool "PA Semi real mode"
204 depends on PPC_PASEMI
206 Select this to enable early debugging for PA Semi.
207 Output will be on UART0.
209 config PPC_EARLY_DEBUG_BEAT
210 bool "Beat HV Console"
211 depends on PPC_CELLEB
214 Select this to enable early debugging for Celleb with Beat.
216 config PPC_EARLY_DEBUG_44x
217 bool "Early serial debugging for IBM/AMCC 44x CPUs"
220 Select this to enable early debugging for IBM 44x chips via the
221 inbuilt serial port. If you enable this, ensure you set
222 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
224 config PPC_EARLY_DEBUG_40x
225 bool "Early serial debugging for IBM/AMCC 40x CPUs"
228 Select this to enable early debugging for IBM 40x chips via the
229 inbuilt serial port. This works on chips with a 16550 compatible
230 UART. Xilinx chips with uartlite cannot use this option.
232 config PPC_EARLY_DEBUG_CPM
233 bool "Early serial debugging for Freescale CPM-based serial ports"
234 depends on SERIAL_CPM
235 select PIN_TLB if PPC_8xx
237 Select this to enable early debugging for Freescale chips
238 using a CPM-based serial port. This assumes that the bootwrapper
239 has run, and set up the CPM in a particular way.
241 config PPC_EARLY_DEBUG_USBGECKO
242 bool "Early debugging through the USB Gecko adapter"
243 depends on GAMECUBE_COMMON
246 Select this to enable early debugging for Nintendo GameCube/Wii
247 consoles via an external USB Gecko adapter.
249 config PPC_EARLY_DEBUG_WSP
250 bool "Early debugging via WSP's internal UART"
252 select PPC_UDBG_16550
256 config PPC_EARLY_DEBUG_44x_PHYSLOW
257 hex "Low 32 bits of early debug UART physical address"
258 depends on PPC_EARLY_DEBUG_44x
261 You probably want 0x40000200 for ebony boards and
262 0x40000300 for taishan
264 config PPC_EARLY_DEBUG_44x_PHYSHIGH
265 hex "EPRN of early debug UART physical address"
266 depends on PPC_EARLY_DEBUG_44x
269 config PPC_EARLY_DEBUG_40x_PHYSADDR
270 hex "Early debug UART physical address"
271 depends on PPC_EARLY_DEBUG_40x
274 config PPC_EARLY_DEBUG_CPM_ADDR
275 hex "CPM UART early debug transmit descriptor address"
276 depends on PPC_EARLY_DEBUG_CPM
277 default "0xfa202008" if PPC_EP88XC
278 default "0xf0001ff8" if CPM2
279 default "0xff002008" if CPM1
281 This specifies the address of the transmit descriptor
282 used for early debug output. Because it is needed before
283 platform probing is done, all platforms selected must
284 share the same address.