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_SH7206
  35         default "0xf8420000" if CPU_SUBTYPE_SH7619
  36         default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705
  37         default "0xffe80000" if CPU_SH4
  38
  39 config EARLY_PRINTK
  40         bool "Early printk support"
  41         depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
  42         help
  43           Say Y here to redirect kernel printk messages to the serial port
  44           used by the SH-IPL bootloader, starting very early in the boot
  45           process and ending when the kernel's serial console is initialised.
  46           This option is only useful porting the kernel to a new machine,
  47           when the kernel may crash or hang before the serial console is
  48           initialised. If unsure, say N.
  49
  50           On devices that are running SH-IPL and want to keep the port
  51           initialization consistent while not using the BIOS callbacks,
  52           select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
  53           the kernel command line option to toggle back and forth.
  54
  55 config DEBUG_STACKOVERFLOW
  56         bool "Check for stack overflows"
  57         depends on DEBUG_KERNEL
  58         help
  59           This option will cause messages to be printed if free stack space
  60           drops below a certain limit.
  61
  62 config DEBUG_STACK_USAGE
  63         bool "Stack utilization instrumentation"
  64         depends on DEBUG_KERNEL
  65         help
  66           Enables the display of the minimum amount of free stack which each
  67           task has ever had available in the sysrq-T and sysrq-P debug output.
  68
  69           This option will slow down process creation somewhat.
  70
  71 config 4KSTACKS
  72         bool "Use 4Kb for kernel stacks instead of 8Kb"
  73         depends on DEBUG_KERNEL
  74         help
  75           If you say Y here the kernel will use a 4Kb stacksize for the
  76           kernel stack attached to each process/thread. This facilitates
  77           running more threads on a system and also reduces the pressure
  78           on the VM subsystem for higher order allocations. This option
  79           will also use IRQ stacks to compensate for the reduced stackspace.
  80
  81 config SH_KGDB
  82         bool "Include KGDB kernel debugger"
  83         select FRAME_POINTER
  84         select DEBUG_INFO
  85         help
  86           Include in-kernel hooks for kgdb, the Linux kernel source level
  87           debugger.  See <http://kgdb.sourceforge.net/> for more information.
  88           Unless you are intending to debug the kernel, say N here.
  89
  90 menu "KGDB configuration options"
  91         depends on SH_KGDB
  92
  93 config MORE_COMPILE_OPTIONS
  94         bool "Add any additional compile options"
  95         help
  96           If you want to add additional CFLAGS to the kernel build, enable this
  97           option and then enter what you would like to add in the next question.
  98           Note however that -g is already appended with the selection of KGDB.
  99
 100 config COMPILE_OPTIONS
 101         string "Additional compile arguments"
 102         depends on MORE_COMPILE_OPTIONS
 103
 104 config KGDB_NMI
 105         bool "Enter KGDB on NMI"
 106         default n
 107
 108 config SH_KGDB_CONSOLE
 109         bool "Console messages through GDB"
 110         depends on !SERIAL_SH_SCI_CONSOLE
 111         select SERIAL_CORE_CONSOLE
 112         default n
 113
 114 config KGDB_SYSRQ
 115         bool "Allow SysRq 'G' to enter KGDB"
 116         default y
 117
 118 comment "Serial port setup"
 119
 120 config KGDB_DEFPORT
 121         int "Port number (ttySCn)"
 122         default "1"
 123
 124 config KGDB_DEFBAUD
 125         int "Baud rate"
 126         default "115200"
 127
 128 choice
 129         prompt "Parity"
 130         depends on SH_KGDB
 131         default KGDB_DEFPARITY_N
 132
 133 config KGDB_DEFPARITY_N
 134         bool "None"
 135
 136 config KGDB_DEFPARITY_E
 137         bool "Even"
 138
 139 config KGDB_DEFPARITY_O
 140         bool "Odd"
 141
 142 endchoice
 143
 144 choice
 145         prompt "Data bits"
 146         depends on SH_KGDB
 147         default KGDB_DEFBITS_8
 148
 149 config KGDB_DEFBITS_8
 150         bool "8"
 151
 152 config KGDB_DEFBITS_7
 153         bool "7"
 154
 155 endchoice
 156
 157 endmenu
 158
 159 endmenu