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kernel-ark/include/asm-i386
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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>
2005-09-09 13:57:35 -07:00
..
mach-bigsmp [PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386) 2005-06-23 09:45:09 -07:00
mach-default [PATCH] fix reboot via keyboard controller reset 2005-09-09 13:57:35 -07:00
mach-es7000 [PATCH] ES7000 platform update (i386) 2005-09-05 00:06:10 -07:00
mach-generic [PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs 2005-09-05 00:06:10 -07:00
mach-numaq [PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386) 2005-06-23 09:45:09 -07:00
mach-summit [PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386) 2005-06-23 09:45:09 -07:00
mach-visws [PATCH] Make visws compile again 2005-08-07 10:00:38 -07:00
mach-voyager
8253pit.h
a.out.h
acpi.h [ACPI] delete CONFIG_ACPI_PCI 2005-08-25 12:40:44 -04:00
agp.h [PATCH] i386: inline asm cleanup 2005-09-05 00:06:11 -07:00
apic.h [PATCH] kexec: x86: resture apic virtual wire mode on shutdown 2005-06-25 16:24:47 -07:00
apicdef.h [PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs 2005-09-05 00:06:10 -07:00
arch_hooks.h
atomic.h
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h x86: fix new find_first_bit() 2005-07-29 11:01:22 -04:00
boot.h
bug.h
bugs.h [PATCH] i386: inline asm cleanup 2005-09-05 00:06:11 -07:00
byteorder.h
cache.h
cacheflush.h
checksum.h [NET]: Fix ipl=>ihl typo in ip_fast_csum 2005-08-29 16:02:48 -07:00
cpu.h [PATCH] i386 CPU hotplug 2005-06-25 16:24:29 -07:00
cpufeature.h
cputime.h
current.h
debugreg.h
delay.h
desc.h [PATCH] x86: introduce a write acessor for updating the current LDT 2005-09-05 00:06:13 -07:00
div64.h
dma-mapping.h
dma.h
e820.h
elf.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
emergency-restart.h [PATCH] i386: Implement machine_emergency_reboot 2005-07-26 14:35:42 -07:00
errno.h
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
fixmap.h [ACPI] delete CONFIG_ACPI_BOOT 2005-08-24 12:08:54 -04:00
floppy.h
futex.h [PATCH] FUTEX_WAKE_OP: pthread_cond_signal() speedup 2005-09-07 16:57:17 -07:00
genapic.h [PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386) 2005-06-23 09:45:09 -07:00
hardirq.h
highmem.h [PATCH] kdump: Routines for copying dump pages 2005-06-25 16:24:53 -07:00
hpet.h
hw_irq.h
i387.h x86: use alternative instructions for fnsave/fxsave too 2005-07-22 18:19:20 -04:00
i8253.h [PATCH] x86: i8253/i8259A lock cleanup 2005-06-30 08:45:10 -07:00
i8259.h
ide.h [PATCH] ide: sensible probing for PCI systems 2005-06-27 17:36:41 -07:00
io_apic.h [ACPI] delete CONFIG_ACPI_BOOT 2005-08-24 12:08:54 -04:00
io.h
ioctl.h
ioctls.h
ipc.h
ipcbuf.h
irq.h [PATCH] cpu state clean after hot remove 2005-06-25 16:24:30 -07:00
ist.h
kdebug.h [PATCH] x86 NMI: better support for debuggers 2005-09-05 00:06:13 -07:00
kexec.h [PATCH] Kdump: Export crash notes section address through sysfs 2005-06-25 16:24:51 -07:00
kmap_types.h
kprobes.h [PATCH] kprobes: function-return probes 2005-06-23 09:45:21 -07:00
ldt.h
linkage.h
local.h
math_emu.h
mc146818rtc.h
mca_dma.h
mca.h
mman.h
mmu_context.h
mmu.h
mmx.h
mmzone.h [PATCH] i386: CONFIG_ACPI_SRAT typo fix 2005-09-09 13:56:44 -07:00
module.h
mpspec_def.h
mpspec.h Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
msgbuf.h
msi.h
msr.h [PATCH] x86: more asm cleanups 2005-09-05 00:06:12 -07:00
mtrr.h
namei.h
nmi.h
node.h
numaq.h
numnodes.h
page.h [PATCH] remove hugetlb_clean_stale_pgtable() and fix huge_pte_alloc() 2005-09-05 00:05:46 -07:00
param.h [PATCH] i386: Selectable Frequency of the Timer Interrupt 2005-06-23 09:45:10 -07:00
parport.h
pci-direct.h
pci.h Revert PCIBIOS_MIN_IO changes for 2.6.13 2005-08-14 18:21:30 -07:00
percpu.h
pgalloc.h
pgtable-2level-defs.h
pgtable-2level.h
pgtable-3level-defs.h
pgtable-3level.h [PATCH] i386: use set_pte macros in a couple places where they were missing 2005-09-05 00:06:12 -07:00
pgtable.h [PATCH] i386: encapsulate copying of pgd entries 2005-09-05 00:06:13 -07:00
poll.h
posix_types.h
processor.h [PATCH] x86: make IOPL explicit 2005-09-05 00:06:12 -07:00
ptrace.h [PATCH] x86: privilege cleanup 2005-09-05 00:06:12 -07:00
resource.h
rtc.h
rwlock.h
rwsem.h
scatterlist.h
seccomp.h
sections.h
segment.h
semaphore.h
sembuf.h
serial.h [PATCH] Serial: Split 8250 port table (part 2) 2005-06-29 18:45:19 +01:00
setup.h [PATCH] x86: fix EFI memory map parsing 2005-09-05 00:06:09 -07:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
smp.h [PATCH] i386 boottime for_each_cpu broken 2005-09-05 00:06:13 -07:00
socket.h [NET]: Introduce SO_{SND,RCV}BUFFORCE socket options 2005-08-29 15:31:35 -07:00
sockios.h
sparsemem.h [PATCH] sparsemem memory model for i386 2005-06-23 09:45:05 -07:00
spinlock.h
srat.h
stat.h
statfs.h
string.h Add "memory" clobbers to the x86 inline asm of strncmp and friends 2005-06-24 10:39:17 -07:00
suspend.h
system.h [PATCH] x86: make IOPL explicit 2005-09-05 00:06:12 -07:00
termbits.h
termios.h
thread_info.h [PATCH] UML Support - Ptrace: adds the host SYSEMU support, for UML and general usage 2005-09-05 00:06:20 -07:00
timer.h [PATCH] add suspend/resume for timer 2005-09-05 00:06:18 -07:00
timex.h [PATCH] x86: cpu_khz type fix 2005-06-23 09:45:11 -07:00
tlb.h
tlbflush.h [PATCH] seccomp: tsc disable 2005-06-27 15:11:44 -07:00
topology.h [PATCH] sched: sched tuning 2005-06-25 16:24:42 -07:00
types.h [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
uaccess.h [PATCH] remove verify_area(): remove verify_area() from various uaccess.h headers 2005-09-07 16:57:35 -07:00
ucontext.h
unaligned.h
unistd.h [PATCH] inotify 2005-07-12 20:38:38 -07:00
user.h
vga.h
vic.h
vm86.h
voyager.h
xor.h [PATCH] i386: inline asm cleanup 2005-09-05 00:06:11 -07:00