Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 1 | menu "Kernel hacking" |
| 2 | |
| 3 | source "lib/Kconfig.debug" |
| 4 | |
Michael Ellerman | ba55bd7 | 2009-06-09 20:48:51 +0000 | [diff] [blame] | 5 | config PPC_DISABLE_WERROR |
| 6 | bool "Don't build arch/powerpc code with -Werror" |
| 7 | default n |
| 8 | help |
| 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). |
| 12 | |
| 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 |
| 15 | inclined to fix it. |
| 16 | |
| 17 | config PPC_WERROR |
| 18 | bool |
| 19 | depends on !PPC_DISABLE_WERROR |
| 20 | default y |
| 21 | |
Johannes Berg | c4d04be | 2008-11-20 03:24:07 +0000 | [diff] [blame] | 22 | config PRINT_STACK_DEPTH |
| 23 | int "Stack depth to print" if DEBUG_KERNEL |
| 24 | default 64 |
| 25 | help |
| 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. |
| 30 | |
Paul Mackerras | ff64208 | 2005-10-10 22:15:52 +1000 | [diff] [blame] | 31 | config DEBUG_STACKOVERFLOW |
| 32 | bool "Check for stack overflows" |
Kumar Gala | 304df8f | 2007-01-30 00:45:56 -0600 | [diff] [blame] | 33 | depends on DEBUG_KERNEL |
Paul Mackerras | ff64208 | 2005-10-10 22:15:52 +1000 | [diff] [blame] | 34 | help |
| 35 | This option will cause messages to be printed if free stack space |
| 36 | drops below a certain limit. |
| 37 | |
Mike Kravetz | 57852a8 | 2006-09-06 16:23:12 -0700 | [diff] [blame] | 38 | config HCALL_STATS |
| 39 | bool "Hypervisor call instrumentation" |
Anton Blanchard | c8cd093 | 2009-10-26 18:50:29 +0000 | [diff] [blame] | 40 | depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS |
Mike Kravetz | 57852a8 | 2006-09-06 16:23:12 -0700 | [diff] [blame] | 41 | help |
| 42 | Adds code to keep track of the number of hypervisor calls made and |
David Sterba | 3dde6ad | 2007-05-09 07:12:20 +0200 | [diff] [blame] | 43 | the amount of time spent in hypervisor calls. Wall time spent in |
Mike Kravetz | 57852a8 | 2006-09-06 16:23:12 -0700 | [diff] [blame] | 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. |
| 48 | |
| 49 | This option will add a small amount of overhead to all hypervisor |
| 50 | calls. |
| 51 | |
Geert Uytterhoeven | 80947e7 | 2009-05-18 02:10:05 +0000 | [diff] [blame] | 52 | config PPC_EMULATED_STATS |
| 53 | bool "Emulated instructions tracking" |
| 54 | depends on DEBUG_FS |
| 55 | help |
| 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 |
| 63 | emulated. |
| 64 | |
Michael Ellerman | ae0dc73 | 2008-06-24 11:32:32 +1000 | [diff] [blame] | 65 | config CODE_PATCHING_SELFTEST |
| 66 | bool "Run self-tests of the code-patching code." |
| 67 | depends on DEBUG_KERNEL |
| 68 | default n |
| 69 | |
Michael Ellerman | 362e770 | 2008-06-24 11:33:03 +1000 | [diff] [blame] | 70 | config FTR_FIXUP_SELFTEST |
| 71 | bool "Run self-tests of the feature-fixup code." |
| 72 | depends on DEBUG_KERNEL |
| 73 | default n |
| 74 | |
Michael Ellerman | 7e30286 | 2008-08-06 09:10:01 +1000 | [diff] [blame] | 75 | config MSI_BITMAP_SELFTEST |
| 76 | bool "Run self-tests of the MSI bitmap code." |
| 77 | depends on DEBUG_KERNEL |
| 78 | default n |
| 79 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 80 | config XMON |
| 81 | bool "Include xmon kernel debugger" |
Jason Wessel | 17ce452 | 2008-07-23 11:30:15 -0500 | [diff] [blame] | 82 | depends on DEBUG_KERNEL |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 83 | help |
| 84 | Include in-kernel hooks for the xmon kernel monitor/debugger. |
| 85 | Unless you are intending to debug the kernel, say N here. |
Paul Mackerras | ff64208 | 2005-10-10 22:15:52 +1000 | [diff] [blame] | 86 | Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise |
| 87 | nothing will appear on the screen (xmon writes directly to the |
| 88 | framebuffer memory). |
| 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. |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 93 | xmon will print a backtrace on the very first invocation. |
| 94 | 'xmon=nobt' will disable this autobacktrace. |
Paul Mackerras | ff64208 | 2005-10-10 22:15:52 +1000 | [diff] [blame] | 95 | |
| 96 | config XMON_DEFAULT |
| 97 | bool "Enable xmon by default" |
| 98 | depends on XMON |
| 99 | help |
| 100 | xmon is normally disabled unless booted with 'xmon=on'. |
| 101 | Use 'xmon=off' to disable xmon init during runtime. |
| 102 | |
Michael Ellerman | e042604 | 2006-11-23 00:46:45 +0100 | [diff] [blame] | 103 | config XMON_DISASSEMBLY |
| 104 | bool "Include disassembly support in xmon" |
| 105 | depends on XMON |
| 106 | default y |
| 107 | help |
| 108 | Include support for disassembling in xmon. You probably want |
| 109 | to say Y here, unless you're building for a memory-constrained |
| 110 | system. |
| 111 | |
Jason Wessel | 17ce452 | 2008-07-23 11:30:15 -0500 | [diff] [blame] | 112 | config DEBUGGER |
| 113 | bool |
| 114 | depends on KGDB || XMON |
| 115 | default y |
| 116 | |
Michael Ellerman | 60b332e | 2007-08-28 18:47:57 +1000 | [diff] [blame] | 117 | config VIRQ_DEBUG |
| 118 | bool "Expose hardware/virtual IRQ mapping via debugfs" |
Kumar Gala | 9c4cb82 | 2008-08-02 02:44:11 +1000 | [diff] [blame] | 119 | depends on DEBUG_FS |
Michael Ellerman | 60b332e | 2007-08-28 18:47:57 +1000 | [diff] [blame] | 120 | help |
| 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. |
| 124 | |
| 125 | If you don't know what this means you don't need it. |
| 126 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 127 | config BDI_SWITCH |
| 128 | bool "Include BDI-2000 user context switcher" |
Paul Mackerras | ff64208 | 2005-10-10 22:15:52 +1000 | [diff] [blame] | 129 | depends on DEBUG_KERNEL && PPC32 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 130 | help |
| 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. |
| 134 | |
| 135 | config BOOTX_TEXT |
| 136 | bool "Support for early boot text console (BootX or OpenFirmware only)" |
Benjamin Herrenschmidt | 28794d3 | 2009-03-10 17:53:27 +0000 | [diff] [blame] | 137 | depends on PPC_OF && PPC_BOOK3S |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 138 | help |
| 139 | Say Y here to see progress messages from the boot firmware in text |
| 140 | mode. Requires either BootX or Open Firmware. |
| 141 | |
Michael Ellerman | 485a2d5 | 2006-05-09 16:03:51 +1000 | [diff] [blame] | 142 | config PPC_EARLY_DEBUG |
| 143 | bool "Early debugging (dangerous)" |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 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. |
| 146 | depends on !KVM |
Benjamin Herrenschmidt | 7ee1746 | 2007-12-11 14:48:24 +1100 | [diff] [blame] | 147 | help |
| 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 |
Michael Ellerman | 485a2d5 | 2006-05-09 16:03:51 +1000 | [diff] [blame] | 154 | |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 155 | choice |
Michael Ellerman | 485a2d5 | 2006-05-09 16:03:51 +1000 | [diff] [blame] | 156 | prompt "Early debugging console" |
| 157 | depends on PPC_EARLY_DEBUG |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 158 | help |
Michael Ellerman | 485a2d5 | 2006-05-09 16:03:51 +1000 | [diff] [blame] | 159 | Use the selected console for early debugging. Careful, if you |
| 160 | enable debugging for the wrong type of machine your kernel |
| 161 | _will not boot_. |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 162 | |
| 163 | config PPC_EARLY_DEBUG_LPAR |
| 164 | bool "LPAR HV Console" |
| 165 | depends on PPC_PSERIES |
| 166 | help |
| 167 | Select this to enable early debugging for a machine with a HVC |
| 168 | console on vterm 0. |
| 169 | |
Benjamin Herrenschmidt | 4d2bb3f | 2011-05-12 13:46:38 +1000 | [diff] [blame] | 170 | config PPC_EARLY_DEBUG_LPAR_HVSI |
| 171 | bool "LPAR HVSI Console" |
| 172 | depends on PPC_PSERIES |
| 173 | help |
| 174 | Select this to enable early debugging for a machine with a HVSI |
| 175 | console on a specified vterm. |
| 176 | |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 177 | config PPC_EARLY_DEBUG_G5 |
| 178 | bool "Apple G5" |
| 179 | depends on PPC_PMAC64 |
| 180 | help |
| 181 | Select this to enable early debugging for Apple G5 machines. |
| 182 | |
Michael Ellerman | cc46bb9 | 2006-06-23 18:20:16 +1000 | [diff] [blame] | 183 | config PPC_EARLY_DEBUG_RTAS_PANEL |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 184 | bool "RTAS Panel" |
| 185 | depends on PPC_RTAS |
| 186 | help |
| 187 | Select this to enable early debugging via the RTAS panel. |
| 188 | |
Michael Ellerman | cc46bb9 | 2006-06-23 18:20:16 +1000 | [diff] [blame] | 189 | config PPC_EARLY_DEBUG_RTAS_CONSOLE |
| 190 | bool "RTAS Console" |
| 191 | depends on PPC_RTAS |
| 192 | select UDBG_RTAS_CONSOLE |
| 193 | help |
| 194 | Select this to enable early debugging via the RTAS console. |
| 195 | |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 196 | config PPC_EARLY_DEBUG_MAPLE |
| 197 | bool "Maple real mode" |
| 198 | depends on PPC_MAPLE |
| 199 | help |
| 200 | Select this to enable early debugging for Maple. |
| 201 | |
| 202 | config PPC_EARLY_DEBUG_ISERIES |
| 203 | bool "iSeries HV Console" |
| 204 | depends on PPC_ISERIES |
| 205 | help |
| 206 | Select this to enable early debugging for legacy iSeries. You need |
| 207 | to hit "Ctrl-x Ctrl-x" to see the messages on the console. |
| 208 | |
Olof Johansson | 39c870d | 2007-02-04 16:36:49 -0600 | [diff] [blame] | 209 | config PPC_EARLY_DEBUG_PAS_REALMODE |
| 210 | bool "PA Semi real mode" |
| 211 | depends on PPC_PASEMI |
| 212 | help |
| 213 | Select this to enable early debugging for PA Semi. |
| 214 | Output will be on UART0. |
| 215 | |
Ishizaki Kou | c347b79 | 2007-02-02 16:47:17 +0900 | [diff] [blame] | 216 | config PPC_EARLY_DEBUG_BEAT |
| 217 | bool "Beat HV Console" |
| 218 | depends on PPC_CELLEB |
| 219 | select PPC_UDBG_BEAT |
| 220 | help |
| 221 | Select this to enable early debugging for Celleb with Beat. |
| 222 | |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 223 | config PPC_EARLY_DEBUG_44x |
| 224 | bool "Early serial debugging for IBM/AMCC 44x CPUs" |
| 225 | depends on 44x |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 226 | help |
| 227 | Select this to enable early debugging for IBM 44x chips via the |
Hugh Blemings | 6bbc547 | 2007-12-21 15:39:28 +1100 | [diff] [blame] | 228 | inbuilt serial port. If you enable this, ensure you set |
| 229 | PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board. |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 230 | |
Benjamin Herrenschmidt | 9dae8af | 2007-12-21 15:39:26 +1100 | [diff] [blame] | 231 | config PPC_EARLY_DEBUG_40x |
| 232 | bool "Early serial debugging for IBM/AMCC 40x CPUs" |
| 233 | depends on 40x |
| 234 | help |
| 235 | Select this to enable early debugging for IBM 40x chips via the |
| 236 | inbuilt serial port. This works on chips with a 16550 compatible |
| 237 | UART. Xilinx chips with uartlite cannot use this option. |
| 238 | |
Scott Wood | c374e00 | 2007-07-16 11:43:43 -0500 | [diff] [blame] | 239 | config PPC_EARLY_DEBUG_CPM |
| 240 | bool "Early serial debugging for Freescale CPM-based serial ports" |
| 241 | depends on SERIAL_CPM |
| 242 | select PIN_TLB if PPC_8xx |
| 243 | help |
| 244 | Select this to enable early debugging for Freescale chips |
| 245 | using a CPM-based serial port. This assumes that the bootwrapper |
| 246 | has run, and set up the CPM in a particular way. |
| 247 | |
Albert Herranz | d1d56f8 | 2009-12-12 06:31:51 +0000 | [diff] [blame] | 248 | config PPC_EARLY_DEBUG_USBGECKO |
| 249 | bool "Early debugging through the USB Gecko adapter" |
| 250 | depends on GAMECUBE_COMMON |
| 251 | select USBGECKO_UDBG |
| 252 | help |
| 253 | Select this to enable early debugging for Nintendo GameCube/Wii |
| 254 | consoles via an external USB Gecko adapter. |
| 255 | |
Jack Miller | a0496d4 | 2011-04-14 22:32:08 +0000 | [diff] [blame] | 256 | config PPC_EARLY_DEBUG_WSP |
| 257 | bool "Early debugging via WSP's internal UART" |
| 258 | depends on PPC_WSP |
| 259 | select PPC_UDBG_16550 |
| 260 | |
Michael Ellerman | 296167a | 2006-01-11 11:54:09 +1100 | [diff] [blame] | 261 | endchoice |
| 262 | |
Benjamin Herrenschmidt | 4d2bb3f | 2011-05-12 13:46:38 +1000 | [diff] [blame] | 263 | config PPC_EARLY_DEBUG_HVSI_VTERMNO |
| 264 | hex "vterm number to use with early debug HVSI" |
| 265 | depends on PPC_EARLY_DEBUG_LPAR_HVSI |
| 266 | default "0x30000000" |
| 267 | help |
| 268 | You probably want 0x30000000 for your first serial port and |
| 269 | 0x30000001 for your second one |
| 270 | |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 271 | config PPC_EARLY_DEBUG_44x_PHYSLOW |
| 272 | hex "Low 32 bits of early debug UART physical address" |
Adrian Bunk | 247537b | 2007-09-26 20:02:52 +0200 | [diff] [blame] | 273 | depends on PPC_EARLY_DEBUG_44x |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 274 | default "0x40000200" |
Hugh Blemings | 6bbc547 | 2007-12-21 15:39:28 +1100 | [diff] [blame] | 275 | help |
| 276 | You probably want 0x40000200 for ebony boards and |
| 277 | 0x40000300 for taishan |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 278 | |
| 279 | config PPC_EARLY_DEBUG_44x_PHYSHIGH |
| 280 | hex "EPRN of early debug UART physical address" |
Adrian Bunk | 247537b | 2007-09-26 20:02:52 +0200 | [diff] [blame] | 281 | depends on PPC_EARLY_DEBUG_44x |
David Gibson | d9b55a0 | 2007-05-08 12:59:31 +1000 | [diff] [blame] | 282 | default "0x1" |
| 283 | |
Benjamin Herrenschmidt | 9dae8af | 2007-12-21 15:39:26 +1100 | [diff] [blame] | 284 | config PPC_EARLY_DEBUG_40x_PHYSADDR |
| 285 | hex "Early debug UART physical address" |
| 286 | depends on PPC_EARLY_DEBUG_40x |
| 287 | default "0xef600300" |
| 288 | |
Scott Wood | c374e00 | 2007-07-16 11:43:43 -0500 | [diff] [blame] | 289 | config PPC_EARLY_DEBUG_CPM_ADDR |
| 290 | hex "CPM UART early debug transmit descriptor address" |
| 291 | depends on PPC_EARLY_DEBUG_CPM |
Scott Wood | 15f8c60 | 2007-09-28 14:06:16 -0500 | [diff] [blame] | 292 | default "0xfa202008" if PPC_EP88XC |
Laurent Pinchart | c2dd352 | 2008-04-10 17:01:59 +0200 | [diff] [blame] | 293 | default "0xf0001ff8" if CPM2 |
Scott Wood | 15f8c60 | 2007-09-28 14:06:16 -0500 | [diff] [blame] | 294 | default "0xff002008" if CPM1 |
Scott Wood | c374e00 | 2007-07-16 11:43:43 -0500 | [diff] [blame] | 295 | help |
| 296 | This specifies the address of the transmit descriptor |
| 297 | used for early debug output. Because it is needed before |
| 298 | platform probing is done, all platforms selected must |
| 299 | share the same address. |
| 300 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 301 | endmenu |