arch/sh/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 config TRACE_IRQFLAGS_SUPPORT
   4         def_bool y
   5
   6 source "lib/Kconfig.debug"
   7
   8 config SH_STANDARD_BIOS
   9         bool "Use LinuxSH standard BIOS"
  10         help
  11           Say Y here if your target has the gdb-sh-stub
  12           package from www.m17n.org (or any conforming standard LinuxSH BIOS)
  13           in FLASH or EPROM.  The kernel will use standard BIOS calls during
  14           boot for various housekeeping tasks (including calls to read and
  15           write characters to a system console, get a MAC address from an
  16           on-board Ethernet interface, and shut down the hardware).  Note this
  17           does not work with machines with an existing operating system in
  18           mask ROM and no flash (WindowsCE machines fall in this category).
  19           If unsure, say N.
  20
  21 config EARLY_SCIF_CONSOLE
  22         bool "Use early SCIF console"
  23         help
  24           This enables an early console using a fixed SCIF port. This can
  25           be used by platforms that are either not running the SH
  26           standard BIOS, or do not wish to use the BIOS callbacks for the
  27           serial I/O.
  28
  29 config EARLY_SCIF_CONSOLE_PORT
  30         hex
  31         depends on EARLY_SCIF_CONSOLE
  32         default "0xffe00000" if CPU_SUBTYPE_SH7780
  33         default "0xffea0000" if CPU_SUBTYPE_SH7785
  34         default "0xfffe8000" if CPU_SUBTYPE_SH7203
  35         default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263
  36         default "0xf8420000" if CPU_SUBTYPE_SH7619
  37         default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705
  38         default "0xa4430000" if CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721
  39         default "0xffc30000" if CPU_SUBTYPE_SHX3
  40         default "0xffe80000" if CPU_SH4
  41         default "0x00000000"
  42
  43 config EARLY_PRINTK
  44         bool "Early printk support"
  45         depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
  46         help
  47           Say Y here to redirect kernel printk messages to the serial port
  48           used by the SH-IPL bootloader, starting very early in the boot
  49           process and ending when the kernel's serial console is initialised.
  50           This option is only useful porting the kernel to a new machine,
  51           when the kernel may crash or hang before the serial console is
  52           initialised. If unsure, say N.
  53
  54           On devices that are running SH-IPL and want to keep the port
  55           initialization consistent while not using the BIOS callbacks,
  56           select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
  57           the kernel command line option to toggle back and forth.
  58
  59 config DEBUG_BOOTMEM
  60         depends on DEBUG_KERNEL
  61         bool "Debug BOOTMEM initialization"
  62
  63 config DEBUG_STACKOVERFLOW
  64         bool "Check for stack overflows"
  65         depends on DEBUG_KERNEL && SUPERH32
  66         help
  67           This option will cause messages to be printed if free stack space
  68           drops below a certain limit.
  69
  70 config DEBUG_STACK_USAGE
  71         bool "Stack utilization instrumentation"
  72         depends on DEBUG_KERNEL
  73         help
  74           Enables the display of the minimum amount of free stack which each
  75           task has ever had available in the sysrq-T and sysrq-P debug output.
  76
  77           This option will slow down process creation somewhat.
  78
  79 config 4KSTACKS
  80         bool "Use 4Kb for kernel stacks instead of 8Kb"
  81         depends on DEBUG_KERNEL
  82         help
  83           If you say Y here the kernel will use a 4Kb stacksize for the
  84           kernel stack attached to each process/thread. This facilitates
  85           running more threads on a system and also reduces the pressure
  86           on the VM subsystem for higher order allocations. This option
  87           will also use IRQ stacks to compensate for the reduced stackspace.
  88
  89 config IRQSTACKS
  90         bool "Use separate kernel stacks when processing interrupts"
  91         depends on DEBUG_KERNEL && SUPERH32
  92         help
  93           If you say Y here the kernel will use separate kernel stacks
  94           for handling hard and soft interrupts.  This can help avoid
  95           overflowing the process kernel stacks.
  96
  97 config SH_KGDB
  98         bool "Include KGDB kernel debugger"
  99         select FRAME_POINTER
 100         select DEBUG_INFO
 101         depends on CPU_SH3 || CPU_SH4
 102         help
 103           Include in-kernel hooks for kgdb, the Linux kernel source level
 104           debugger.  See <http://kgdb.sourceforge.net/> for more information.
 105           Unless you are intending to debug the kernel, say N here.
 106
 107 menu "KGDB configuration options"
 108         depends on SH_KGDB
 109
 110 config MORE_COMPILE_OPTIONS
 111         bool "Add any additional compile options"
 112         help
 113           If you want to add additional CFLAGS to the kernel build, enable this
 114           option and then enter what you would like to add in the next question.
 115           Note however that -g is already appended with the selection of KGDB.
 116
 117 config COMPILE_OPTIONS
 118         string "Additional compile arguments"
 119         depends on MORE_COMPILE_OPTIONS
 120
 121 config KGDB_NMI
 122         def_bool n
 123         prompt "Enter KGDB on NMI"
 124
 125 config SH_KGDB_CONSOLE
 126         def_bool n
 127         prompt "Console messages through GDB"
 128         depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y
 129         select SERIAL_CORE_CONSOLE
 130
 131 config KGDB_SYSRQ
 132         def_bool y
 133         prompt "Allow SysRq 'G' to enter KGDB"
 134         depends on MAGIC_SYSRQ
 135
 136 comment "Serial port setup"
 137
 138 config KGDB_DEFPORT
 139         int "Port number (ttySCn)"
 140         default "1"
 141
 142 config KGDB_DEFBAUD
 143         int "Baud rate"
 144         default "115200"
 145
 146 choice
 147         prompt "Parity"
 148         depends on SH_KGDB
 149         default KGDB_DEFPARITY_N
 150
 151 config KGDB_DEFPARITY_N
 152         bool "None"
 153
 154 config KGDB_DEFPARITY_E
 155         bool "Even"
 156
 157 config KGDB_DEFPARITY_O
 158         bool "Odd"
 159
 160 endchoice
 161
 162 choice
 163         prompt "Data bits"
 164         depends on SH_KGDB
 165         default KGDB_DEFBITS_8
 166
 167 config KGDB_DEFBITS_8
 168         bool "8"
 169
 170 config KGDB_DEFBITS_7
 171         bool "7"
 172
 173 endchoice
 174
 175 endmenu
 176
 177 if SUPERH64
 178
 179 config SH64_PROC_ASIDS
 180         bool "Debug: report ASIDs through /proc/asids"
 181         depends on PROC_FS
 182
 183 config SH64_SR_WATCH
 184         bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
 185
 186 config POOR_MANS_STRACE
 187         bool "Debug: enable rudimentary strace facility"
 188         help
 189           This option allows system calls to be traced to the console.  It also
 190           aids in detecting kernel stack underflow.  It is useful for debugging
 191           early-userland problems (e.g. init incurring fatal exceptions.)
 192
 193 config SH_ALPHANUMERIC
 194         bool "Enable debug outputs to on-board alphanumeric display"
 195         depends on SH_CAYMAN
 196
 197 config SH_NO_BSS_INIT
 198         bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
 199
 200 endif
 201
 202 endmenu