linux/arch/sh/Kconfig.debug
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   1menu "Kernel hacking"
   2
   3config TRACE_IRQFLAGS_SUPPORT
   4        def_bool y
   5
   6source "lib/Kconfig.debug"
   7
   8config 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
  22config 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
  30config 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
  47config 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
  63config DEBUG_BOOTMEM
  64        depends on DEBUG_KERNEL
  65        bool "Debug BOOTMEM initialization"
  66
  67config 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
  74config 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
  83config 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
  93config 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
 101config 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
 111menu "KGDB configuration options"
 112        depends on SH_KGDB
 113
 114config 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
 121config COMPILE_OPTIONS
 122        string "Additional compile arguments"
 123        depends on MORE_COMPILE_OPTIONS
 124
 125config KGDB_NMI
 126        def_bool n
 127        prompt "Enter KGDB on NMI"
 128
 129config 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
 135config KGDB_SYSRQ
 136        def_bool y
 137        prompt "Allow SysRq 'G' to enter KGDB"
 138        depends on MAGIC_SYSRQ
 139
 140comment "Serial port setup"
 141
 142config KGDB_DEFPORT
 143        int "Port number (ttySCn)"
 144        default "1"
 145
 146config KGDB_DEFBAUD
 147        int "Baud rate"
 148        default "115200"
 149
 150choice
 151        prompt "Parity"
 152        depends on SH_KGDB
 153        default KGDB_DEFPARITY_N
 154
 155config KGDB_DEFPARITY_N
 156        bool "None"
 157
 158config KGDB_DEFPARITY_E
 159        bool "Even"
 160
 161config KGDB_DEFPARITY_O
 162        bool "Odd"
 163
 164endchoice
 165
 166choice
 167        prompt "Data bits"
 168        depends on SH_KGDB
 169        default KGDB_DEFBITS_8
 170
 171config KGDB_DEFBITS_8
 172        bool "8"
 173
 174config KGDB_DEFBITS_7
 175        bool "7"
 176
 177endchoice
 178
 179endmenu
 180
 181if SUPERH64
 182
 183config SH64_PROC_ASIDS
 184        bool "Debug: report ASIDs through /proc/asids"
 185        depends on PROC_FS && MMU
 186
 187config SH64_SR_WATCH
 188        bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
 189
 190config 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
 197config SH_ALPHANUMERIC
 198        bool "Enable debug outputs to on-board alphanumeric display"
 199        depends on SH_CAYMAN
 200
 201config SH_NO_BSS_INIT
 202        bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
 203
 204endif
 205
 206endmenu
 207