linux/arch/mn10300/Kconfig.debug
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   1menu "Kernel hacking"
   2
   3source "lib/Kconfig.debug"
   4
   5config DEBUG_DECOMPRESS_KERNEL
   6        bool "Using serial port during decompressing kernel"
   7        depends on DEBUG_KERNEL
   8        default n
   9        help
  10          If you say Y here you will confirm the start and the end of
  11          decompressing Linux seeing "Uncompressing Linux... " and
  12          "Ok, booting the kernel.\n" on console.
  13
  14config TEST_MISALIGNMENT_HANDLER
  15        bool "Run tests on the misalignment handler"
  16        depends on DEBUG_KERNEL
  17        default n
  18        help
  19          If you say Y here the kernel will execute a list of misaligned memory
  20          accesses to make sure the misalignment handler deals them with
  21          correctly.  If it does not, the kernel will throw a BUG.
  22
  23config KPROBES
  24        bool "Kprobes"
  25        depends on DEBUG_KERNEL
  26        help
  27          Kprobes allows you to trap at almost any kernel address and
  28          execute a callback function.  register_kprobe() establishes
  29          a probepoint and specifies the callback.  Kprobes is useful
  30          for kernel debugging, non-intrusive instrumentation and testing.
  31          If in doubt, say "N".
  32
  33config GDBSTUB
  34        bool "Remote GDB kernel debugging"
  35        depends on DEBUG_KERNEL && DEPRECATED
  36        select DEBUG_INFO
  37        select FRAME_POINTER
  38        help
  39          If you say Y here, it will be possible to remotely debug the kernel
  40          using gdb. This enlarges your kernel ELF image disk size by several
  41          megabytes and requires a machine with more than 16 MB, better 32 MB
  42          RAM to avoid excessive linking time. This is only useful for kernel
  43          hackers. If unsure, say N.
  44
  45          This is deprecated in favour of KGDB and will be removed in a later
  46          version.
  47
  48config GDBSTUB_IMMEDIATE
  49        bool "Break into GDB stub immediately"
  50        depends on GDBSTUB
  51        help
  52          If you say Y here, GDB stub will break into the program as soon as
  53          possible, leaving the program counter at the beginning of
  54          start_kernel() in init/main.c.
  55
  56config GDBSTUB_ALLOW_SINGLE_STEP
  57        bool "Allow software single-stepping in GDB stub"
  58        depends on GDBSTUB && !SMP && !PREEMPT
  59        help
  60          Allow GDB stub to perform software single-stepping through the
  61          kernel.  This doesn't work very well on SMP or preemptible kernels as
  62          it uses temporary breakpoints to emulate single-stepping.
  63
  64config GDB_CONSOLE
  65        bool "Console output to GDB"
  66        depends on GDBSTUB
  67        help
  68          If you are using GDB for remote debugging over a serial port and
  69          would like kernel messages to be formatted into GDB $O packets so
  70          that GDB prints them as program output, say 'Y'.
  71
  72config GDBSTUB_DEBUGGING
  73        bool "Debug GDB stub by messages to serial port"
  74        depends on GDBSTUB
  75        help
  76          This causes debugging messages to be displayed at various points
  77          during execution of the GDB stub routines. Such messages will be
  78          displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0
  79          otherwise.
  80
  81config GDBSTUB_DEBUG_ENTRY
  82        bool "Debug GDB stub entry"
  83        depends on GDBSTUB_DEBUGGING
  84        help
  85          This option causes information to be displayed about entry to or exit
  86          from the main GDB stub routine.
  87
  88config GDBSTUB_DEBUG_PROTOCOL
  89        bool "Debug GDB stub protocol"
  90        depends on GDBSTUB_DEBUGGING
  91        help
  92          This option causes information to be displayed about the GDB remote
  93          protocol messages generated exchanged with GDB.
  94
  95config GDBSTUB_DEBUG_IO
  96        bool "Debug GDB stub I/O"
  97        depends on GDBSTUB_DEBUGGING
  98        help
  99          This option causes information to be displayed about GDB stub's
 100          low-level I/O.
 101
 102config GDBSTUB_DEBUG_BREAKPOINT
 103        bool "Debug GDB stub breakpoint management"
 104        depends on GDBSTUB_DEBUGGING
 105        help
 106          This option causes information to be displayed about GDB stub's
 107          breakpoint management.
 108
 109choice
 110        prompt "GDB stub port"
 111        default GDBSTUB_ON_TTYSM0
 112        depends on GDBSTUB
 113        help
 114          Select the serial port used for GDB-stub.
 115
 116config GDBSTUB_ON_TTYSM0
 117        bool "/dev/ttySM0 [SIF0]"
 118        depends on MN10300_TTYSM0
 119        select GDBSTUB_ON_TTYSMx
 120
 121config GDBSTUB_ON_TTYSM1
 122        bool "/dev/ttySM1 [SIF1]"
 123        depends on MN10300_TTYSM1
 124        select GDBSTUB_ON_TTYSMx
 125
 126config GDBSTUB_ON_TTYSM2
 127        bool "/dev/ttySM2 [SIF2]"
 128        depends on MN10300_TTYSM2
 129        select GDBSTUB_ON_TTYSMx
 130
 131config GDBSTUB_ON_TTYS0
 132        bool "/dev/ttyS0"
 133        select GDBSTUB_ON_TTYSx
 134
 135config GDBSTUB_ON_TTYS1
 136        bool "/dev/ttyS1"
 137        select GDBSTUB_ON_TTYSx
 138
 139endchoice
 140
 141config GDBSTUB_ON_TTYSMx
 142        bool
 143        depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2
 144        default y
 145
 146config GDBSTUB_ON_TTYSx
 147        bool
 148        depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1
 149        default y
 150
 151endmenu
 152
 153config KERNEL_DEBUGGER
 154        def_bool y
 155        depends on GDBSTUB || KGDB
 156
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