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/*
* linux/arch/m68k/hp300/reboot.S
*
* Copyright (C) 1998 Philip Blundell <philb@gnu.org>
*
* Do the dirty work of rebooting the machine. Basically we need to undo all the
* good stuff that head.S did when we started up. The caches and MMU must be
* disabled and then we jump back to the PROM. This is a bit gruesome but we put
* a brave face on it.
*/
/* XXX Doesn't work yet. Not sure why and can't be bothered to fix it at the moment. */
.globl hp300_reset
hp300_reset:
.chip 68030
oriw #0x0700,%sr /* cli() */
movel hp300_phys_ram_base, %d1
movel #0, %d0
movec %d0, %vbr /* reset vector table */
lea zero, %a0
lea 1f, %a1
add %d1, %a0
add %d1, %a1
pmove %tc, %a0@
bclr #7, %a0@
pmove %a0@, %tc /* goodbye MMU */
jmp %a1@
1: movel #0x808, %d0
movec %d0, %cacr /* cache off */
moveb #0, 0x1ffff
movel #0x1a4, %a0
jmp %a0@
zero: .quad 0
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