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#ifndef _UAPI_LINUX_REBOOT_H
#define _UAPI_LINUX_REBOOT_H

/*
 * Magic values required to use _reboot() system call.
 */

#define	LINUX_REBOOT_MAGIC1	0xfee1dead
#define	LINUX_REBOOT_MAGIC2	672274793
#define	LINUX_REBOOT_MAGIC2A	85072278
#define	LINUX_REBOOT_MAGIC2B	369367448
#define	LINUX_REBOOT_MAGIC2C	537993216


/*
 * Commands accepted by the _reboot() system call.
 *
 * RESTART     Restart system using default command and mode.
 * HALT        Stop OS and give system control to ROM monitor, if any.
 * CAD_ON      Ctrl-Alt-Del sequence causes RESTART command.
 * CAD_OFF     Ctrl-Alt-Del sequence sends SIGINT to init task.
 * POWER_OFF   Stop OS and remove all power from system, if possible.
 * RESTART2    Restart system using given command string.
 * SW_SUSPEND  Suspend system using software suspend if compiled in.
 * KEXEC       Restart system using a previously loaded Linux kernel
 */

#define	LINUX_REBOOT_CMD_RESTART	0x01234567
#define	LINUX_REBOOT_CMD_HALT		0xCDEF0123
#define	LINUX_REBOOT_CMD_CAD_ON		0x89ABCDEF
#define	LINUX_REBOOT_CMD_CAD_OFF	0x00000000
#define	LINUX_REBOOT_CMD_POWER_OFF	0x4321FEDC
#define	LINUX_REBOOT_CMD_RESTART2	0xA1B2C3D4
#define	LINUX_REBOOT_CMD_SW_SUSPEND	0xD000FCE2
#define	LINUX_REBOOT_CMD_KEXEC		0x45584543



#endif /* _UAPI_LINUX_REBOOT_H */
ous 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 && SUPERH32 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 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 && 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 && SUPERH32 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" select FRAME_POINTER depends on SUPERH32 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 SH64_SR_WATCH bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" depends on SUPERH64 config MCOUNT def_bool y depends on SUPERH32 depends on STACK_DEBUG || FUNCTION_TRACER endmenu