arch/powerpc/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 source "lib/Kconfig.debug"
   4
   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
  22 config STRICT_MM_TYPECHECKS
  23         bool "Do extra type checking on mm types"
  24         default n
  25         help
  26           This option turns on extra type checking for some mm related types.
  27
  28           If you don't know what this means, say N.
  29
  30 config PRINT_STACK_DEPTH
  31         int "Stack depth to print" if DEBUG_KERNEL
  32         default 64
  33         help
  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.
  38
  39 config HCALL_STATS
  40         bool "Hypervisor call instrumentation"
  41         depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
  42         help
  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.
  49
  50           This option will add a small amount of overhead to all hypervisor
  51           calls.
  52
  53 config PPC_EMULATED_STATS
  54         bool "Emulated instructions tracking"
  55         depends on DEBUG_FS
  56         help
  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
  64           emulated.
  65
  66 config CODE_PATCHING_SELFTEST
  67         bool "Run self-tests of the code-patching code"
  68         depends on DEBUG_KERNEL
  69         default n
  70
  71 config FTR_FIXUP_SELFTEST
  72         bool "Run self-tests of the feature-fixup code"
  73         depends on DEBUG_KERNEL
  74         default n
  75
  76 config MSI_BITMAP_SELFTEST
  77         bool "Run self-tests of the MSI bitmap code"
  78         depends on DEBUG_KERNEL
  79         default n
  80
  81 config XMON
  82         bool "Include xmon kernel debugger"
  83         depends on DEBUG_KERNEL
  84         help
  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
  89           framebuffer memory).
  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.
  96
  97 config XMON_DEFAULT
  98         bool "Enable xmon by default"
  99         depends on XMON
 100         help
 101           xmon is normally disabled unless booted with 'xmon=on'.
 102           Use 'xmon=off' to disable xmon init during runtime.
 103
 104 config XMON_DISASSEMBLY
 105         bool "Include disassembly support in xmon"
 106         depends on XMON
 107         default y
 108         help
 109           Include support for disassembling in xmon. You probably want
 110           to say Y here, unless you're building for a memory-constrained
 111           system.
 112
 113 config DEBUGGER
 114         bool
 115         depends on KGDB || XMON
 116         default y
 117
 118 config BDI_SWITCH
 119         bool "Include BDI-2000 user context switcher"
 120         depends on DEBUG_KERNEL && PPC32
 121         help
 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.
 125
 126 config BOOTX_TEXT
 127         bool "Support for early boot text console (BootX or OpenFirmware only)"
 128         depends on PPC_BOOK3S
 129         help
 130           Say Y here to see progress messages from the boot firmware in text
 131           mode. Requires either BootX or Open Firmware.
 132
 133 config PPC_EARLY_DEBUG
 134         bool "Early debugging (dangerous)"
 135         help
 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
 142
 143 choice
 144         prompt "Early debugging console"
 145         depends on PPC_EARLY_DEBUG
 146         help
 147           Use the selected console for early debugging. Careful, if you
 148           enable debugging for the wrong type of machine your kernel
 149           _will not boot_.
 150
 151 config PPC_EARLY_DEBUG_BOOTX
 152         bool "BootX or OpenFirmware"
 153         depends on BOOTX_TEXT
 154         help
 155           Select this to enable early debugging for a machine using BootX
 156           or OpenFirmware.
 157
 158 config PPC_EARLY_DEBUG_LPAR
 159         bool "LPAR HV Console"
 160         depends on PPC_PSERIES
 161         help
 162           Select this to enable early debugging for a machine with a HVC
 163           console on vterm 0.
 164
 165 config PPC_EARLY_DEBUG_LPAR_HVSI
 166         bool "LPAR HVSI Console"
 167         depends on PPC_PSERIES
 168         help
 169           Select this to enable early debugging for a machine with a HVSI
 170           console on a specified vterm.
 171
 172 config PPC_EARLY_DEBUG_G5
 173         bool "Apple G5"
 174         depends on PPC_PMAC64
 175         help
 176           Select this to enable early debugging for Apple G5 machines.
 177
 178 config PPC_EARLY_DEBUG_RTAS_PANEL
 179         bool "RTAS Panel"
 180         depends on PPC_RTAS
 181         help
 182           Select this to enable early debugging via the RTAS panel.
 183
 184 config PPC_EARLY_DEBUG_RTAS_CONSOLE
 185         bool "RTAS Console"
 186         depends on PPC_RTAS
 187         select UDBG_RTAS_CONSOLE
 188         help
 189           Select this to enable early debugging via the RTAS console.
 190
 191 config PPC_EARLY_DEBUG_MAPLE
 192         bool "Maple real mode"
 193         depends on PPC_MAPLE
 194         help
 195           Select this to enable early debugging for Maple.
 196
 197 config PPC_EARLY_DEBUG_PAS_REALMODE
 198         bool "PA Semi real mode"
 199         depends on PPC_PASEMI
 200         help
 201           Select this to enable early debugging for PA Semi.
 202           Output will be on UART0.
 203
 204 config PPC_EARLY_DEBUG_44x
 205         bool "Early serial debugging for IBM/AMCC 44x CPUs"
 206         depends on 44x
 207         help
 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.
 211
 212 config PPC_EARLY_DEBUG_40x
 213         bool "Early serial debugging for IBM/AMCC 40x CPUs"
 214         depends on 40x
 215         help
 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.
 219
 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
 224         help
 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.
 228
 229 config PPC_EARLY_DEBUG_USBGECKO
 230         bool "Early debugging through the USB Gecko adapter"
 231         depends on GAMECUBE_COMMON
 232         select USBGECKO_UDBG
 233         help
 234           Select this to enable early debugging for Nintendo GameCube/Wii
 235           consoles via an external USB Gecko adapter.
 236
 237 config PPC_EARLY_DEBUG_PS3GELIC
 238         bool "Early debugging through the PS3 Ethernet port"
 239         depends on PPC_PS3
 240         select PS3GELIC_UDBG
 241         help
 242           Select this to enable early debugging for the PlayStation3 via
 243           UDP broadcasts sent out through the Ethernet port.
 244
 245 config PPC_EARLY_DEBUG_OPAL_RAW
 246         bool "OPAL raw console"
 247         depends on HVC_OPAL
 248         help
 249           Select this to enable early debugging for the PowerNV platform
 250           using a "raw" console
 251
 252 config PPC_EARLY_DEBUG_OPAL_HVSI
 253         bool "OPAL hvsi console"
 254         depends on HVC_OPAL
 255         help
 256           Select this to enable early debugging for the PowerNV platform
 257           using an "hvsi" console
 258
 259 config PPC_EARLY_DEBUG_MEMCONS
 260         bool "In memory console"
 261         help
 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.
 266 endchoice
 267
 268 config PPC_MEMCONS_OUTPUT_SIZE
 269         int "In memory console output buffer size"
 270         depends on PPC_EARLY_DEBUG_MEMCONS
 271         default 4096
 272         help
 273           Selects the size of the output buffer (in bytes) of the in memory
 274           console.
 275
 276 config PPC_MEMCONS_INPUT_SIZE
 277         int "In memory console input buffer size"
 278         depends on PPC_EARLY_DEBUG_MEMCONS
 279         default 128
 280         help
 281           Selects the size of the input buffer (in bytes) of the in memory
 282           console.
 283
 284 config PPC_EARLY_DEBUG_OPAL
 285         def_bool y
 286         depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
 287
 288
 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
 292         default "0x30000000"
 293         help
 294           You probably want 0x30000000 for your first serial port and
 295           0x30000001 for your second one
 296
 297 config PPC_EARLY_DEBUG_OPAL_VTERMNO
 298         hex "vterm number to use with OPAL early debug"
 299         depends on PPC_EARLY_DEBUG_OPAL
 300         default "0"
 301         help
 302           This correspond to which /dev/hvcN you want to use for early
 303           debug.
 304
 305           On OPAL v2, this will be 0 for network console and 1 or 2 for
 306           the machine built-in serial ports.
 307
 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
 311         default "0x40000200"
 312         help
 313           You probably want 0x40000200 for ebony boards and
 314           0x40000300 for taishan
 315
 316 config PPC_EARLY_DEBUG_44x_PHYSHIGH
 317         hex "EPRN of early debug UART physical address"
 318         depends on PPC_EARLY_DEBUG_44x
 319         default "0x1"
 320
 321 config PPC_EARLY_DEBUG_40x_PHYSADDR
 322         hex "Early debug UART physical address"
 323         depends on PPC_EARLY_DEBUG_40x
 324         default "0xef600300"
 325
 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
 332         help
 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.
 337
 338 config FAIL_IOMMU
 339         bool "Fault-injection capability for IOMMU"
 340         depends on FAULT_INJECTION
 341         help
 342           Provide fault-injection capability for IOMMU. Each device can
 343           be selectively enabled via the fail_iommu property.
 344
 345           If you are unsure, say N.
 346
 347 endmenu