204 lines
5.7 KiB
Plaintext
204 lines
5.7 KiB
Plaintext
menu "Kernel hacking"
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config TRACE_IRQFLAGS_SUPPORT
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bool
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default y
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source "lib/Kconfig.debug"
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config SH_STANDARD_BIOS
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bool "Use LinuxSH standard BIOS"
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help
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Say Y here if your target has the gdb-sh-stub
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package from www.m17n.org (or any conforming standard LinuxSH BIOS)
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in FLASH or EPROM. The kernel will use standard BIOS calls during
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boot for various housekeeping tasks (including calls to read and
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write characters to a system console, get a MAC address from an
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on-board Ethernet interface, and shut down the hardware). Note this
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does not work with machines with an existing operating system in
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mask ROM and no flash (WindowsCE machines fall in this category).
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If unsure, say N.
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config EARLY_SCIF_CONSOLE
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bool "Use early SCIF console"
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help
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This enables an early console using a fixed SCIF port. This can
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be used by platforms that are either not running the SH
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standard BIOS, or do not wish to use the BIOS callbacks for the
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serial I/O.
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config EARLY_SCIF_CONSOLE_PORT
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hex
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depends on EARLY_SCIF_CONSOLE
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default "0xffe00000" if CPU_SUBTYPE_SH7780
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default "0xffea0000" if CPU_SUBTYPE_SH7785
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default "0xfffe8000" if CPU_SUBTYPE_SH7203
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default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263
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default "0xf8420000" if CPU_SUBTYPE_SH7619
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default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705
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default "0xa4430000" if CPU_SUBTYPE_SH7720
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default "0xffc30000" if CPU_SUBTYPE_SHX3
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default "0xffe80000" if CPU_SH4
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default "0x00000000"
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config EARLY_PRINTK
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bool "Early printk support"
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depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
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help
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Say Y here to redirect kernel printk messages to the serial port
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used by the SH-IPL bootloader, starting very early in the boot
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process and ending when the kernel's serial console is initialised.
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This option is only useful porting the kernel to a new machine,
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when the kernel may crash or hang before the serial console is
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initialised. If unsure, say N.
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On devices that are running SH-IPL and want to keep the port
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initialization consistent while not using the BIOS callbacks,
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select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
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the kernel command line option to toggle back and forth.
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config DEBUG_BOOTMEM
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depends on DEBUG_KERNEL
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bool "Debug BOOTMEM initialization"
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config DEBUG_STACKOVERFLOW
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bool "Check for stack overflows"
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depends on DEBUG_KERNEL && SUPERH32
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help
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This option will cause messages to be printed if free stack space
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drops below a certain limit.
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config DEBUG_STACK_USAGE
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bool "Stack utilization instrumentation"
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depends on DEBUG_KERNEL
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help
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Enables the display of the minimum amount of free stack which each
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task has ever had available in the sysrq-T and sysrq-P debug output.
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This option will slow down process creation somewhat.
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config 4KSTACKS
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bool "Use 4Kb for kernel stacks instead of 8Kb"
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depends on DEBUG_KERNEL
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help
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If you say Y here the kernel will use a 4Kb stacksize for the
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kernel stack attached to each process/thread. This facilitates
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running more threads on a system and also reduces the pressure
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on the VM subsystem for higher order allocations. This option
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will also use IRQ stacks to compensate for the reduced stackspace.
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config IRQSTACKS
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bool "Use separate kernel stacks when processing interrupts"
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depends on DEBUG_KERNEL && SUPERH32
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help
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If you say Y here the kernel will use separate kernel stacks
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for handling hard and soft interrupts. This can help avoid
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overflowing the process kernel stacks.
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config SH_KGDB
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bool "Include KGDB kernel debugger"
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select FRAME_POINTER
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select DEBUG_INFO
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depends on CPU_SH3 || CPU_SH4
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help
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Include in-kernel hooks for kgdb, the Linux kernel source level
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debugger. See <http://kgdb.sourceforge.net/> for more information.
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Unless you are intending to debug the kernel, say N here.
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menu "KGDB configuration options"
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depends on SH_KGDB
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config MORE_COMPILE_OPTIONS
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bool "Add any additional compile options"
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help
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If you want to add additional CFLAGS to the kernel build, enable this
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option and then enter what you would like to add in the next question.
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Note however that -g is already appended with the selection of KGDB.
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config COMPILE_OPTIONS
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string "Additional compile arguments"
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depends on MORE_COMPILE_OPTIONS
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config KGDB_NMI
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bool "Enter KGDB on NMI"
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default n
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config SH_KGDB_CONSOLE
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bool "Console messages through GDB"
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depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y
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select SERIAL_CORE_CONSOLE
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default n
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config KGDB_SYSRQ
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bool "Allow SysRq 'G' to enter KGDB"
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depends on MAGIC_SYSRQ
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default y
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comment "Serial port setup"
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config KGDB_DEFPORT
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int "Port number (ttySCn)"
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default "1"
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config KGDB_DEFBAUD
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int "Baud rate"
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default "115200"
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choice
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prompt "Parity"
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depends on SH_KGDB
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default KGDB_DEFPARITY_N
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config KGDB_DEFPARITY_N
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bool "None"
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config KGDB_DEFPARITY_E
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bool "Even"
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config KGDB_DEFPARITY_O
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bool "Odd"
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endchoice
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choice
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prompt "Data bits"
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depends on SH_KGDB
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default KGDB_DEFBITS_8
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config KGDB_DEFBITS_8
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bool "8"
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config KGDB_DEFBITS_7
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bool "7"
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endchoice
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endmenu
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if SUPERH64
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config SH64_PROC_ASIDS
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bool "Debug: report ASIDs through /proc/asids"
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depends on PROC_FS
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config SH64_SR_WATCH
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bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
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config POOR_MANS_STRACE
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bool "Debug: enable rudimentary strace facility"
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help
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This option allows system calls to be traced to the console. It also
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aids in detecting kernel stack underflow. It is useful for debugging
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early-userland problems (e.g. init incurring fatal exceptions.)
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config SH_ALPHANUMERIC
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bool "Enable debug outputs to on-board alphanumeric display"
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depends on SH_CAYMAN
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config SH_NO_BSS_INIT
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bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
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endif
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endmenu
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