# SPDX-License-Identifier: GPL-2.0 config SH_STANDARD_BIOS	bool "Use LinuxSH standard BIOS"	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 STACK_DEBUG	bool "Check for stack overflows"	depends on DEBUG_KERNEL && PRINTK	help	  This option will cause messages to be printed if free stack space	  drops below a certain limit. Saying Y here will add overhead to	  every function call and will therefore incur a major	  performance hit. Most users should say N. config EARLY_PRINTK	bool "Early printk"	depends on SH_STANDARD_BIOS	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 while porting the kernel to a new machine,	  when the kernel may crash or hang before the serial console is	  initialised.  If unsure, say N. 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 && BROKEN	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 DUMP_CODE	bool "Show disassembly of nearby code in register dumps"	depends on DEBUG_KERNEL	default y if DEBUG_BUGVERBOSE	default n	help	  This prints out a code trace of the instructions leading up to	  the faulting instruction as a debugging aid. As this does grow	  the kernel in size a bit, most users will want to say N here. 	  Those looking for more verbose debugging output should say Y. config DWARF_UNWINDER	bool "Enable the DWARF unwinder for stacktraces"	depends on DEBUG_KERNEL	select FRAME_POINTER	default n	help	  Enabling this option will make stacktraces more accurate, at	  the cost of an increase in overall kernel size. config SH_NO_BSS_INIT	bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"	depends on DEBUG_KERNEL	default n	help	  If running in painfully slow environments, such as an RTL	  simulation or from remote memory via SHdebug, where the memory	  can already be guaranteed to ber zeroed on boot, say Y. 	  For all other cases, say N. If this option seems perplexing, or	  you aren't sure, say N. config MCOUNT	def_bool y	depends on STACK_DEBUG || FUNCTION_TRACER