| menu "Kernel hacking" | |
| config TRACE_IRQFLAGS_SUPPORT | |
| def_bool y | |
| source "lib/Kconfig.debug" | |
| config SH_STANDARD_BIOS | |
| bool "Use LinuxSH standard BIOS" | |
| depends on SUPERH32 | |
| help | |
| Say Y here if your target has the gdb-sh-stub | |
| package from www.m17n.org (or any conforming standard LinuxSH BIOS) | |
| in FLASH or EPROM. The kernel will use standard BIOS calls during | |
| boot for various housekeeping tasks (including calls to read and | |
| write characters to a system console, get a MAC address from an | |
| on-board Ethernet interface, and shut down the hardware). Note this | |
| does not work with machines with an existing operating system in | |
| mask ROM and no flash (WindowsCE machines fall in this category). | |
| If unsure, say N. | |
| config EARLY_SCIF_CONSOLE | |
| bool "Use early SCIF console" | |
| help | |
| This enables an early console using a fixed SCIF port. This can | |
| be used by platforms that are either not running the SH | |
| standard BIOS, or do not wish to use the BIOS callbacks for the | |
| serial I/O. | |
| config EARLY_SCIF_CONSOLE_PORT | |
| hex | |
| depends on EARLY_SCIF_CONSOLE | |
| default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705 | |
| default "0xa4430000" if CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721 | |
| default "0xf8420000" if CPU_SUBTYPE_SH7619 | |
| default "0xff804000" if CPU_SUBTYPE_MXG | |
| default "0xffc30000" if CPU_SUBTYPE_SHX3 | |
| default "0xffe00000" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7763 || \ | |
| CPU_SUBTYPE_SH7722 || CPU_SUBTYPE_SH7366 || \ | |
| CPU_SUBTYPE_SH7343 | |
| default "0xffe80000" if CPU_SH4 | |
| default "0xffea0000" if CPU_SUBTYPE_SH7785 | |
| default "0xfffe8000" if CPU_SUBTYPE_SH7203 | |
| default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263 | |
| default "0x00000000" | |
| config EARLY_PRINTK | |
| bool "Early printk support" | |
| depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE | |
| help | |
| Say Y here to redirect kernel printk messages to the serial port | |
| used by the SH-IPL bootloader, starting very early in the boot | |
| process and ending when the kernel's serial console is initialised. | |
| This option is only useful porting the kernel to a new machine, | |
| when the kernel may crash or hang before the serial console is | |
| initialised. If unsure, say N. | |
| On devices that are running SH-IPL and want to keep the port | |
| initialization consistent while not using the BIOS callbacks, | |
| select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using | |
| the kernel command line option to toggle back and forth. | |
| config DEBUG_BOOTMEM | |
| depends on DEBUG_KERNEL | |
| bool "Debug BOOTMEM initialization" | |
| config DEBUG_STACKOVERFLOW | |
| bool "Check for stack overflows" | |
| depends on DEBUG_KERNEL && SUPERH32 | |
| help | |
| This option will cause messages to be printed if free stack space | |
| drops below a certain limit. | |
| config DEBUG_STACK_USAGE | |
| bool "Stack utilization instrumentation" | |
| depends on DEBUG_KERNEL | |
| help | |
| Enables the display of the minimum amount of free stack which each | |
| task has ever had available in the sysrq-T and sysrq-P debug output. | |
| This option will slow down process creation somewhat. | |
| config 4KSTACKS | |
| bool "Use 4Kb for kernel stacks instead of 8Kb" | |
| depends on DEBUG_KERNEL && (MMU || BROKEN) && !PAGE_SIZE_64KB | |
| help | |
| If you say Y here the kernel will use a 4Kb stacksize for the | |
| kernel stack attached to each process/thread. This facilitates | |
| running more threads on a system and also reduces the pressure | |
| on the VM subsystem for higher order allocations. This option | |
| will also use IRQ stacks to compensate for the reduced stackspace. | |
| config IRQSTACKS | |
| bool "Use separate kernel stacks when processing interrupts" | |
| depends on DEBUG_KERNEL && SUPERH32 | |
| help | |
| If you say Y here the kernel will use separate kernel stacks | |
| for handling hard and soft interrupts. This can help avoid | |
| overflowing the process kernel stacks. | |
| config SH_KGDB | |
| bool "Include KGDB kernel debugger" | |
| select FRAME_POINTER | |
| select DEBUG_INFO | |
| depends on CPU_SH3 || CPU_SH4 | |
| help | |
| Include in-kernel hooks for kgdb, the Linux kernel source level | |
| debugger. See <http://kgdb.sourceforge.net/> for more information. | |
| Unless you are intending to debug the kernel, say N here. | |
| menu "KGDB configuration options" | |
| depends on SH_KGDB | |
| config MORE_COMPILE_OPTIONS | |
| bool "Add any additional compile options" | |
| help | |
| If you want to add additional CFLAGS to the kernel build, enable this | |
| option and then enter what you would like to add in the next question. | |
| Note however that -g is already appended with the selection of KGDB. | |
| config COMPILE_OPTIONS | |
| string "Additional compile arguments" | |
| depends on MORE_COMPILE_OPTIONS | |
| config KGDB_NMI | |
| def_bool n | |
| prompt "Enter KGDB on NMI" | |
| config SH_KGDB_CONSOLE | |
| def_bool n | |
| prompt "Console messages through GDB" | |
| depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y | |
| select SERIAL_CORE_CONSOLE | |
| config KGDB_SYSRQ | |
| def_bool y | |
| prompt "Allow SysRq 'G' to enter KGDB" | |
| depends on MAGIC_SYSRQ | |
| comment "Serial port setup" | |
| config KGDB_DEFPORT | |
| int "Port number (ttySCn)" | |
| default "1" | |
| config KGDB_DEFBAUD | |
| int "Baud rate" | |
| default "115200" | |
| choice | |
| prompt "Parity" | |
| depends on SH_KGDB | |
| default KGDB_DEFPARITY_N | |
| config KGDB_DEFPARITY_N | |
| bool "None" | |
| config KGDB_DEFPARITY_E | |
| bool "Even" | |
| config KGDB_DEFPARITY_O | |
| bool "Odd" | |
| endchoice | |
| choice | |
| prompt "Data bits" | |
| depends on SH_KGDB | |
| default KGDB_DEFBITS_8 | |
| config KGDB_DEFBITS_8 | |
| bool "8" | |
| config KGDB_DEFBITS_7 | |
| bool "7" | |
| endchoice | |
| endmenu | |
| if SUPERH64 | |
| config SH64_PROC_ASIDS | |
| bool "Debug: report ASIDs through /proc/asids" | |
| depends on PROC_FS && MMU | |
| config SH64_SR_WATCH | |
| bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" | |
| config POOR_MANS_STRACE | |
| bool "Debug: enable rudimentary strace facility" | |
| help | |
| This option allows system calls to be traced to the console. It also | |
| aids in detecting kernel stack underflow. It is useful for debugging | |
| early-userland problems (e.g. init incurring fatal exceptions.) | |
| config SH_ALPHANUMERIC | |
| bool "Enable debug outputs to on-board alphanumeric display" | |
| depends on SH_CAYMAN | |
| config SH_NO_BSS_INIT | |
| bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" | |
| endif | |
| endmenu |