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         depends on SUPERH32
  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
  32         depends on EARLY_SCIF_CONSOLE
  33         default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705
  34         default "0xa4430000" if CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721
  35         default "0xf8420000" if CPU_SUBTYPE_SH7619
  36         default "0xff804000" if CPU_SUBTYPE_MXG
  37         default "0xffc30000" if CPU_SUBTYPE_SHX3
  38         default "0xffe00000" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7763 || \
  39                                 CPU_SUBTYPE_SH7722 || CPU_SUBTYPE_SH7366
  40         default "0xffe80000" if CPU_SH4
  41         default "0xffea0000" if CPU_SUBTYPE_SH7785
  42         default "0xfffe8000" if CPU_SUBTYPE_SH7203
  43         default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263
  44         default "0x00000000"
  45
  46 config EARLY_PRINTK
  47         bool "Early printk support"
  48         depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
  49         help
  50           Say Y here to redirect kernel printk messages to the serial port
  51           used by the SH-IPL bootloader, starting very early in the boot
  52           process and ending when the kernel's serial console is initialised.
  53           This option is only useful porting the kernel to a new machine,
  54           when the kernel may crash or hang before the serial console is
  55           initialised. If unsure, say N.
  56
  57           On devices that are running SH-IPL and want to keep the port
  58           initialization consistent while not using the BIOS callbacks,
  59           select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
  60           the kernel command line option to toggle back and forth.
  61
  62 config DEBUG_BOOTMEM
  63         depends on DEBUG_KERNEL
  64         bool "Debug BOOTMEM initialization"
  65
  66 config DEBUG_STACKOVERFLOW
  67         bool "Check for stack overflows"
  68         depends on DEBUG_KERNEL && SUPERH32
  69         help
  70           This option will cause messages to be printed if free stack space
  71           drops below a certain limit.
  72
  73 config DEBUG_STACK_USAGE
  74         bool "Stack utilization instrumentation"
  75         depends on DEBUG_KERNEL
  76         help
  77           Enables the display of the minimum amount of free stack which each
  78           task has ever had available in the sysrq-T and sysrq-P debug output.
  79
  80           This option will slow down process creation somewhat.
  81
  82 config 4KSTACKS
  83         bool "Use 4Kb for kernel stacks instead of 8Kb"
  84         depends on DEBUG_KERNEL
  85         help
  86           If you say Y here the kernel will use a 4Kb stacksize for the
  87           kernel stack attached to each process/thread. This facilitates
  88           running more threads on a system and also reduces the pressure
  89           on the VM subsystem for higher order allocations. This option
  90           will also use IRQ stacks to compensate for the reduced stackspace.
  91
  92 config IRQSTACKS
  93         bool "Use separate kernel stacks when processing interrupts"
  94         depends on DEBUG_KERNEL && SUPERH32
  95         help
  96           If you say Y here the kernel will use separate kernel stacks
  97           for handling hard and soft interrupts.  This can help avoid
  98           overflowing the process kernel stacks.
  99
 100 config SH_KGDB
 101         bool "Include KGDB kernel debugger"
 102         select FRAME_POINTER
 103         select DEBUG_INFO
 104         depends on CPU_SH3 || CPU_SH4
 105         help
 106           Include in-kernel hooks for kgdb, the Linux kernel source level
 107           debugger.  See <http://kgdb.sourceforge.net/> for more information.
 108           Unless you are intending to debug the kernel, say N here.
 109
 110 menu "KGDB configuration options"
 111         depends on SH_KGDB
 112
 113 config MORE_COMPILE_OPTIONS
 114         bool "Add any additional compile options"
 115         help
 116           If you want to add additional CFLAGS to the kernel build, enable this
 117           option and then enter what you would like to add in the next question.
 118           Note however that -g is already appended with the selection of KGDB.
 119
 120 config COMPILE_OPTIONS
 121         string "Additional compile arguments"
 122         depends on MORE_COMPILE_OPTIONS
 123
 124 config KGDB_NMI
 125         def_bool n
 126         prompt "Enter KGDB on NMI"
 127
 128 config SH_KGDB_CONSOLE
 129         def_bool n
 130         prompt "Console messages through GDB"
 131         depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y
 132         select SERIAL_CORE_CONSOLE
 133
 134 config KGDB_SYSRQ
 135         def_bool y
 136         prompt "Allow SysRq 'G' to enter KGDB"
 137         depends on MAGIC_SYSRQ
 138
 139 comment "Serial port setup"
 140
 141 config KGDB_DEFPORT
 142         int "Port number (ttySCn)"
 143         default "1"
 144
 145 config KGDB_DEFBAUD
 146         int "Baud rate"
 147         default "115200"
 148
 149 choice
 150         prompt "Parity"
 151         depends on SH_KGDB
 152         default KGDB_DEFPARITY_N
 153
 154 config KGDB_DEFPARITY_N
 155         bool "None"
 156
 157 config KGDB_DEFPARITY_E
 158         bool "Even"
 159
 160 config KGDB_DEFPARITY_O
 161         bool "Odd"
 162
 163 endchoice
 164
 165 choice
 166         prompt "Data bits"
 167         depends on SH_KGDB
 168         default KGDB_DEFBITS_8
 169
 170 config KGDB_DEFBITS_8
 171         bool "8"
 172
 173 config KGDB_DEFBITS_7
 174         bool "7"
 175
 176 endchoice
 177
 178 endmenu
 179
 180 if SUPERH64
 181
 182 config SH64_PROC_ASIDS
 183         bool "Debug: report ASIDs through /proc/asids"
 184         depends on PROC_FS
 185
 186 config SH64_SR_WATCH
 187         bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
 188
 189 config POOR_MANS_STRACE
 190         bool "Debug: enable rudimentary strace facility"
 191         help
 192           This option allows system calls to be traced to the console.  It also
 193           aids in detecting kernel stack underflow.  It is useful for debugging
 194           early-userland problems (e.g. init incurring fatal exceptions.)
 195
 196 config SH_ALPHANUMERIC
 197         bool "Enable debug outputs to on-board alphanumeric display"
 198         depends on SH_CAYMAN
 199
 200 config SH_NO_BSS_INIT
 201         bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
 202
 203 endif
 204
 205 endmenu