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_BOOTMEM
  56         depends on DEBUG_KERNEL
  57         bool "Debug BOOTMEM initialization"
  58
  59 config DEBUG_STACKOVERFLOW
  60         bool "Check for stack overflows"
  61         depends on DEBUG_KERNEL
  62         help
  63           This option will cause messages to be printed if free stack space
  64           drops below a certain limit.
  65
  66 config DEBUG_STACK_USAGE
  67         bool "Stack utilization instrumentation"
  68         depends on DEBUG_KERNEL
  69         help
  70           Enables the display of the minimum amount of free stack which each
  71           task has ever had available in the sysrq-T and sysrq-P debug output.
  72
  73           This option will slow down process creation somewhat.
  74
  75 config 4KSTACKS
  76         bool "Use 4Kb for kernel stacks instead of 8Kb"
  77         depends on DEBUG_KERNEL
  78         help
  79           If you say Y here the kernel will use a 4Kb stacksize for the
  80           kernel stack attached to each process/thread. This facilitates
  81           running more threads on a system and also reduces the pressure
  82           on the VM subsystem for higher order allocations. This option
  83           will also use IRQ stacks to compensate for the reduced stackspace.
  84
  85 config SH_KGDB
  86         bool "Include KGDB kernel debugger"
  87         select FRAME_POINTER
  88         select DEBUG_INFO
  89         depends on CPU_SH3 || CPU_SH4
  90         help
  91           Include in-kernel hooks for kgdb, the Linux kernel source level
  92           debugger.  See <http://kgdb.sourceforge.net/> for more information.
  93           Unless you are intending to debug the kernel, say N here.
  94
  95 menu "KGDB configuration options"
  96         depends on SH_KGDB
  97
  98 config MORE_COMPILE_OPTIONS
  99         bool "Add any additional compile options"
 100         help
 101           If you want to add additional CFLAGS to the kernel build, enable this
 102           option and then enter what you would like to add in the next question.
 103           Note however that -g is already appended with the selection of KGDB.
 104
 105 config COMPILE_OPTIONS
 106         string "Additional compile arguments"
 107         depends on MORE_COMPILE_OPTIONS
 108
 109 config KGDB_NMI
 110         bool "Enter KGDB on NMI"
 111         default n
 112
 113 config SH_KGDB_CONSOLE
 114         bool "Console messages through GDB"
 115         depends on !SERIAL_SH_SCI_CONSOLE
 116         select SERIAL_CORE_CONSOLE
 117         default n
 118
 119 config KGDB_SYSRQ
 120         bool "Allow SysRq 'G' to enter KGDB"
 121         default y
 122
 123 comment "Serial port setup"
 124
 125 config KGDB_DEFPORT
 126         int "Port number (ttySCn)"
 127         default "1"
 128
 129 config KGDB_DEFBAUD
 130         int "Baud rate"
 131         default "115200"
 132
 133 choice
 134         prompt "Parity"
 135         depends on SH_KGDB
 136         default KGDB_DEFPARITY_N
 137
 138 config KGDB_DEFPARITY_N
 139         bool "None"
 140
 141 config KGDB_DEFPARITY_E
 142         bool "Even"
 143
 144 config KGDB_DEFPARITY_O
 145         bool "Odd"
 146
 147 endchoice
 148
 149 choice
 150         prompt "Data bits"
 151         depends on SH_KGDB
 152         default KGDB_DEFBITS_8
 153
 154 config KGDB_DEFBITS_8
 155         bool "8"
 156
 157 config KGDB_DEFBITS_7
 158         bool "7"
 159
 160 endchoice
 161
 162 endmenu
 163
 164 endmenu