1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29/* omap44xx ID detection and reporting */
30
31#include <aboot/aboot.h>
32#include <aboot/io.h>
33
34#define CONTORL_ID_CODE (0x4A002204)
35
36struct omap_id {
37	omap_rev    rev_num;
38	u32         rev_reg_val;
39};
40
41static struct omap_id  map[] = {
42        { OMAP_4430_ES1_DOT_0, 0x0B85202F },
43        { OMAP_4430_ES2_DOT_0, 0x1B85202F },
44        { OMAP_4430_ES2_DOT_1, 0x3B95C02F },
45        { OMAP_4430_ES2_DOT_2, 0x4B95C02F },
46        { OMAP_4430_ES2_DOT_3, 0x6B95C02F },
47        { OMAP_4460_ES1_DOT_0, 0x0B94E02F },
48	{ OMAP_4460_ES1_DOT_1, 0x2B94E02F },
49        { OMAP_REV_INVALID,    0x00000000 },
50};
51
52omap_rev get_omap_rev(void)
53{
54	u8 i;
55	u32 id_code;
56
57	id_code = readl(CONTORL_ID_CODE);
58
59	for (i = 0; map[i].rev_num != OMAP_REV_INVALID; i++) {
60		if (map[i].rev_reg_val == id_code) {
61			return map[i].rev_num;
62		}
63	}
64
65	return OMAP_REV_INVALID;
66}
67