Truxton Fulton 59f4e7d572 [PATCH] fix reboot via keyboard controller reset ... I have a system (Biostar IDEQ210M mini-pc with a VIA chipset) which will not reboot unless a keyboard is plugged in to it. I have tried all combinations of the kernel "reboot=x,y" flags to no avail. Rebooting by any method will leave the system in a wedged state (at the "Restarting system" message). I finally tracked the problem down to the machine's refusal to fully reboot unless the keyboard controller status register had bit 2 set. This is the "System flag" which when set, indicates successful completion of the keyboard controller self-test (Basic Assurance Test, BAT). I suppose that something is trying to protect against sporadic reboots unless the keyboard controller is in a good state (a keyboard is present), but I need this machine to be headless. I found that setting the system flag (via the command byte) before giving the "pulse reset line" command will allow the reboot to proceed. The patch is simple, and I think it should be fine for everybody whether they have this type of machine or not. This affects the "hard" reboot (as done when the kernel boot flags "reboot=c,h" are used). Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2005-09-09 13:57:35 -07:00
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apm.h
bios_ebda.h
do_timer.h
entry_arch.h
io_ports.h
irq_vectors_limits.h
irq_vectors.h
mach_apic.h
mach_apicdef.h
mach_ipi.h
mach_mpparse.h
mach_mpspec.h
mach_reboot.h	[PATCH] fix reboot via keyboard controller reset	2005-09-09 13:57:35 -07:00
mach_time.h
mach_timer.h
mach_traps.h
mach_wakecpu.h
pci-functions.h
setup_arch_post.h
setup_arch_pre.h
smpboot_hooks.h