1/*-
2 * Copyright 2013-2015 John Wehle <john@feith.com>
3 * All rights reserved.
4 *
5 * Based on omap4_l2cache.c by Olivier Houchard
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#include <sys/types.h>
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/bus.h>
38#include <sys/rman.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41
42#include <machine/bus.h>
43#include <machine/pl310.h>
44
45void
46platform_pl310_init(struct pl310_softc *sc)
47{
48	uint32_t aux;
49
50	aux = pl310_read4(sc, PL310_AUX_CTRL);
51
52	/*
53	 * The Amlogic Linux platform code enables via AUX:
54	 *
55	 *   Early BRESP
56	 *   Full Line of Zero (which must match processor setting)
57	 *   Data Prefetch
58	 *
59	 * and additionally on the m6 enables:
60	 *
61	 *   Instruction Prefetch
62	 *
63	 * For the moment we only enable Data Prefetch ...
64	 * further refinements can happen as things mature.
65	 */
66
67	/*
68	 * Disable instruction prefetch.
69	 */
70	aux &= ~AUX_CTRL_INSTR_PREFETCH;
71
72	/*
73	 * Enable data prefetch.
74	 */
75	aux |= AUX_CTRL_DATA_PREFETCH;
76
77	pl310_write4(sc, PL310_AUX_CTRL, aux);
78}
79
80void
81platform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val)
82{
83
84	pl310_write4(sc, PL310_CTRL, val);
85}
86
87void
88platform_pl310_write_debug(struct pl310_softc *sc, uint32_t val)
89{
90
91	pl310_write4(sc, PL310_DEBUG_CTRL, val);
92}
93