arch/sh/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 config TRACE_IRQFLAGS_SUPPORT
   4         bool
   5         default y
   6
   7 source "lib/Kconfig.debug"
   8
   9 config SH_STANDARD_BIOS
  10         bool "Use LinuxSH standard BIOS"
  11         help
  12           Say Y here if your target has the gdb-sh-stub
  13           package from www.m17n.org (or any conforming standard LinuxSH BIOS)
  14           in FLASH or EPROM.  The kernel will use standard BIOS calls during
  15           boot for various housekeeping tasks (including calls to read and
  16           write characters to a system console, get a MAC address from an
  17           on-board Ethernet interface, and shut down the hardware).  Note this
  18           does not work with machines with an existing operating system in
  19           mask ROM and no flash (WindowsCE machines fall in this category).
  20           If unsure, say N.
  21
  22 config EARLY_SCIF_CONSOLE
  23         bool "Use early SCIF console"
  24         help
  25           This enables an early console using a fixed SCIF port. This can
  26           be used by platforms that are either not running the SH
  27           standard BIOS, or do not wish to use the BIOS callbacks for the
  28           serial I/O.
  29
  30 config EARLY_SCIF_CONSOLE_PORT
  31         hex "SCIF port for early console"
  32         depends on EARLY_SCIF_CONSOLE
  33         default "0xffe00000" if CPU_SUBTYPE_SH7780
  34         default "0xfffe9800" if CPU_SUBTYPE_SH72060
  35         default "0xffe80000" if CPU_SH4
  36
  37 config EARLY_PRINTK
  38         bool "Early printk support"
  39         depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
  40         help
  41           Say Y here to redirect kernel printk messages to the serial port
  42           used by the SH-IPL bootloader, starting very early in the boot
  43           process and ending when the kernel's serial console is initialised.
  44           This option is only useful porting the kernel to a new machine,
  45           when the kernel may crash or hang before the serial console is
  46           initialised. If unsure, say N.
  47
  48           On devices that are running SH-IPL and want to keep the port
  49           initialization consistent while not using the BIOS callbacks,
  50           select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
  51           the kernel command line option to toggle back and forth.
  52
  53 config DEBUG_STACKOVERFLOW
  54         bool "Check for stack overflows"
  55         depends on DEBUG_KERNEL
  56         help
  57           This option will cause messages to be printed if free stack space
  58           drops below a certain limit.
  59
  60 config DEBUG_STACK_USAGE
  61         bool "Stack utilization instrumentation"
  62         depends on DEBUG_KERNEL
  63         help
  64           Enables the display of the minimum amount of free stack which each
  65           task has ever had available in the sysrq-T and sysrq-P debug output.
  66
  67           This option will slow down process creation somewhat.
  68
  69 config 4KSTACKS
  70         bool "Use 4Kb for kernel stacks instead of 8Kb"
  71         depends on DEBUG_KERNEL
  72         help
  73           If you say Y here the kernel will use a 4Kb stacksize for the
  74           kernel stack attached to each process/thread. This facilitates
  75           running more threads on a system and also reduces the pressure
  76           on the VM subsystem for higher order allocations. This option
  77           will also use IRQ stacks to compensate for the reduced stackspace.
  78
  79 config KGDB
  80         bool "Include KGDB kernel debugger"
  81         select FRAME_POINTER
  82         help
  83           Include in-kernel hooks for kgdb, the Linux kernel source level
  84           debugger.  See <http://kgdb.sourceforge.net/> for more information.
  85           Unless you are intending to debug the kernel, say N here.
  86
  87 menu "KGDB configuration options"
  88         depends on KGDB
  89
  90 config MORE_COMPILE_OPTIONS
  91         bool "Add any additional compile options"
  92         help
  93           If you want to add additional CFLAGS to the kernel build, enable this
  94           option and then enter what you would like to add in the next question.
  95           Note however that -g is already appended with the selection of KGDB.
  96
  97 config COMPILE_OPTIONS
  98         string "Additional compile arguments"
  99         depends on MORE_COMPILE_OPTIONS
 100
 101 config KGDB_NMI
 102         bool "Enter KGDB on NMI"
 103         default n
 104
 105 config KGDB_THREAD
 106         bool "Include KGDB thread support"
 107         default y
 108
 109 config SH_KGDB_CONSOLE
 110         bool "Console messages through GDB"
 111         default n
 112
 113 config KGDB_SYSRQ
 114         bool "Allow SysRq 'G' to enter KGDB"
 115         default y
 116
 117 config KGDB_KERNEL_ASSERTS
 118         bool "Include KGDB kernel assertions"
 119         default n
 120
 121 comment "Serial port setup"
 122
 123 config KGDB_DEFPORT
 124         int "Port number (ttySCn)"
 125         default "1"
 126
 127 config KGDB_DEFBAUD
 128         int "Baud rate"
 129         default "115200"
 130
 131 choice
 132         prompt "Parity"
 133         depends on KGDB
 134         default KGDB_DEFPARITY_N
 135
 136 config KGDB_DEFPARITY_N
 137         bool "None"
 138
 139 config KGDB_DEFPARITY_E
 140         bool "Even"
 141
 142 config KGDB_DEFPARITY_O
 143         bool "Odd"
 144
 145 endchoice
 146
 147 choice
 148         prompt "Data bits"
 149         depends on KGDB
 150         default KGDB_DEFBITS_8
 151
 152 config KGDB_DEFBITS_8
 153         bool "8"
 154
 155 config KGDB_DEFBITS_7
 156         bool "7"
 157
 158 endchoice
 159
 160 endmenu
 161
 162 endmenu