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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>		20 years ago
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apm.h	Linux-2.6.12-rc2	20 years ago
bios_ebda.h	Linux-2.6.12-rc2	20 years ago
do_timer.h	[PATCH] x86: i8253/i8259A lock cleanup	20 years ago
entry_arch.h	Linux-2.6.12-rc2	20 years ago
io_ports.h	Linux-2.6.12-rc2	20 years ago
irq_vectors.h	Linux-2.6.12-rc2	20 years ago
irq_vectors_limits.h	Linux-2.6.12-rc2	20 years ago
mach_apic.h	[PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386)	20 years ago
mach_apicdef.h	Linux-2.6.12-rc2	20 years ago
mach_ipi.h	[PATCH] i386: Dont use IPI broadcast when using cpu hotplug.	20 years ago
mach_mpparse.h	Linux-2.6.12-rc2	20 years ago
mach_mpspec.h	Linux-2.6.12-rc2	20 years ago
mach_reboot.h	[PATCH] fix reboot via keyboard controller reset	20 years ago
mach_time.h	Linux-2.6.12-rc2	20 years ago
mach_timer.h	Linux-2.6.12-rc2	20 years ago
mach_traps.h	Linux-2.6.12-rc2	20 years ago
mach_wakecpu.h	Linux-2.6.12-rc2	20 years ago
pci-functions.h	Linux-2.6.12-rc2	20 years ago
setup_arch_post.h	Linux-2.6.12-rc2	20 years ago
setup_arch_pre.h	Linux-2.6.12-rc2	20 years ago
smpboot_hooks.h	Linux-2.6.12-rc2	20 years ago