2 * arch/sh/kernel/cpu/ubc.S
4 * Set of management routines for the User Break Controller (UBC)
6 * Copyright (C) 2002 Paul Mundt
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
13 #include <linux/linkage.h>
16 #define STBCR2 0xffc00010
21 mov.l 1f, r1 ! Zero out UBC_BBRA ..
24 mov.l 2f, r1 ! .. same for BBRB ..
27 mov.l 3f, r1 ! .. and again for BRCR.
30 mov.w @r1, r0 ! Dummy read BRCR
32 mov.l 4f, r1 ! Set MSTP5 in STBCR2
37 mov.b @r1, r0 ! Two dummy reads ..
44 mov.l 4f, r1 ! Clear MSTP5
49 mov.b @r1, r0 ! Two more dummy reads ..