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                                 CPU_SUBTYPE_SH7343
  41         default "0xffe80000" if CPU_SH4
  42         default "0xffea0000" if CPU_SUBTYPE_SH7785
  43         default "0xfffe8000" if CPU_SUBTYPE_SH7203
  44         default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263
  45         default "0x00000000"
  46
  47 config EARLY_PRINTK
  48         bool "Early printk support"
  49         depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
  50         help
  51           Say Y here to redirect kernel printk messages to the serial port
  52           used by the SH-IPL bootloader, starting very early in the boot
  53           process and ending when the kernel's serial console is initialised.
  54           This option is only useful porting the kernel to a new machine,
  55           when the kernel may crash or hang before the serial console is
  56           initialised. If unsure, say N.
  57
  58           On devices that are running SH-IPL and want to keep the port
  59           initialization consistent while not using the BIOS callbacks,
  60           select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
  61           the kernel command line option to toggle back and forth.
  62
  63 config DEBUG_BOOTMEM
  64         depends on DEBUG_KERNEL
  65         bool "Debug BOOTMEM initialization"
  66
  67 config DEBUG_STACKOVERFLOW
  68         bool "Check for stack overflows"
  69         depends on DEBUG_KERNEL && SUPERH32
  70         help
  71           This option will cause messages to be printed if free stack space
  72           drops below a certain limit.
  73
  74 config DEBUG_STACK_USAGE
  75         bool "Stack utilization instrumentation"
  76         depends on DEBUG_KERNEL
  77         help
  78           Enables the display of the minimum amount of free stack which each
  79           task has ever had available in the sysrq-T and sysrq-P debug output.
  80
  81           This option will slow down process creation somewhat.
  82
  83 config 4KSTACKS
  84         bool "Use 4Kb for kernel stacks instead of 8Kb"
  85         depends on DEBUG_KERNEL && (MMU || BROKEN)
  86         help
  87           If you say Y here the kernel will use a 4Kb stacksize for the
  88           kernel stack attached to each process/thread. This facilitates
  89           running more threads on a system and also reduces the pressure
  90           on the VM subsystem for higher order allocations. This option
  91           will also use IRQ stacks to compensate for the reduced stackspace.
  92
  93 config IRQSTACKS
  94         bool "Use separate kernel stacks when processing interrupts"
  95         depends on DEBUG_KERNEL && SUPERH32
  96         help
  97           If you say Y here the kernel will use separate kernel stacks
  98           for handling hard and soft interrupts.  This can help avoid
  99           overflowing the process kernel stacks.
 100
 101 config SH_KGDB
 102         bool "Include KGDB kernel debugger"
 103         select FRAME_POINTER
 104         select DEBUG_INFO
 105         depends on CPU_SH3 || CPU_SH4
 106         help
 107           Include in-kernel hooks for kgdb, the Linux kernel source level
 108           debugger.  See <http://kgdb.sourceforge.net/> for more information.
 109           Unless you are intending to debug the kernel, say N here.
 110
 111 menu "KGDB configuration options"
 112         depends on SH_KGDB
 113
 114 config MORE_COMPILE_OPTIONS
 115         bool "Add any additional compile options"
 116         help
 117           If you want to add additional CFLAGS to the kernel build, enable this
 118           option and then enter what you would like to add in the next question.
 119           Note however that -g is already appended with the selection of KGDB.
 120
 121 config COMPILE_OPTIONS
 122         string "Additional compile arguments"
 123         depends on MORE_COMPILE_OPTIONS
 124
 125 config KGDB_NMI
 126         def_bool n
 127         prompt "Enter KGDB on NMI"
 128
 129 config SH_KGDB_CONSOLE
 130         def_bool n
 131         prompt "Console messages through GDB"
 132         depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y
 133         select SERIAL_CORE_CONSOLE
 134
 135 config KGDB_SYSRQ
 136         def_bool y
 137         prompt "Allow SysRq 'G' to enter KGDB"
 138         depends on MAGIC_SYSRQ
 139
 140 comment "Serial port setup"
 141
 142 config KGDB_DEFPORT
 143         int "Port number (ttySCn)"
 144         default "1"
 145
 146 config KGDB_DEFBAUD
 147         int "Baud rate"
 148         default "115200"
 149
 150 choice
 151         prompt "Parity"
 152         depends on SH_KGDB
 153         default KGDB_DEFPARITY_N
 154
 155 config KGDB_DEFPARITY_N
 156         bool "None"
 157
 158 config KGDB_DEFPARITY_E
 159         bool "Even"
 160
 161 config KGDB_DEFPARITY_O
 162         bool "Odd"
 163
 164 endchoice
 165
 166 choice
 167         prompt "Data bits"
 168         depends on SH_KGDB
 169         default KGDB_DEFBITS_8
 170
 171 config KGDB_DEFBITS_8
 172         bool "8"
 173
 174 config KGDB_DEFBITS_7
 175         bool "7"
 176
 177 endchoice
 178
 179 endmenu
 180
 181 if SUPERH64
 182
 183 config SH64_PROC_ASIDS
 184         bool "Debug: report ASIDs through /proc/asids"
 185         depends on PROC_FS && MMU
 186
 187 config SH64_SR_WATCH
 188         bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
 189
 190 config POOR_MANS_STRACE
 191         bool "Debug: enable rudimentary strace facility"
 192         help
 193           This option allows system calls to be traced to the console.  It also
 194           aids in detecting kernel stack underflow.  It is useful for debugging
 195           early-userland problems (e.g. init incurring fatal exceptions.)
 196
 197 config SH_ALPHANUMERIC
 198         bool "Enable debug outputs to on-board alphanumeric display"
 199         depends on SH_CAYMAN
 200
 201 config SH_NO_BSS_INIT
 202         bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
 203
 204 endif
 205
 206 endmenu