1/*-
2 * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
3 * All rights reserved.
4 *
5 * Developed by Semihalf.
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 * 3. Neither the name of MARVELL nor the names of contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: releng/11.0/sys/arm/mv/discovery/discovery.c 235609 2012-05-18 14:41:14Z gber $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/bus.h>
38
39#include <machine/bus.h>
40#include <machine/fdt.h>
41
42#include <arm/mv/mvreg.h>
43#include <arm/mv/mvvar.h>
44#include <arm/mv/mvwin.h>
45
46/*
47 * Virtual address space layout:
48 * -----------------------------
49 * 0x0000_0000 - 0xBFFF_FFFF	: User Process (3 GB)
50 * 0xC000_0000 - virtual_avail	: Kernel Reserved (text, data, page tables,
51 * 				: stack etc.)
52 * virtual-avail - 0xEFFF_FFFF	: KVA (virtual_avail is typically < 0xc0a0_0000)
53 * 0xF000_0000 - 0xF0FF_FFFF	: No-Cache allocation area (16 MB)
54 * 0xF100_0000 - 0xF10F_FFFF	: SoC Integrated devices registers range (1 MB)
55 * 0xF110_0000 - 0xF11F_FFFF	: PCI-Express I/O space (1MB)
56 * 0xF120_0000 - 0xF12F_FFFF	: PCI I/O space (1MB)
57 * 0xF130_0000 - 0xF52F_FFFF	: PCI-Express memory space (64MB)
58 * 0xF530_0000 - 0xF92F_FFFF	: PCI memory space (64MB)
59 * 0xF930_0000 - 0xF93F_FFFF	: Device Bus: BOOT (1 MB)
60 * 0xF940_0000 - 0xF94F_FFFF	: Device Bus: CS0 (1 MB)
61 * 0xF950_0000 - 0xFB4F_FFFF	: Device Bus: CS1 (32 MB)
62 * 0xFB50_0000 - 0xFB5F_FFFF	: Device Bus: CS2 (1 MB)
63 * 0xFB60_0000 - 0xFFFE_FFFF	: Unused (~74MB)
64 * 0xFFFF_0000 - 0xFFFF_0FFF	: 'High' vectors page (4 kB)
65 * 0xFFFF_1000 - 0xFFFF_1FFF	: ARM_TP_ADDRESS/RAS page (4 kB)
66 * 0xFFFF_2000 - 0xFFFF_FFFF	: Unused (56 kB)
67 */
68
69
70struct resource_spec mv_gpio_res[] = {
71	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },
72	{ SYS_RES_IRQ,		0,	RF_ACTIVE },
73	{ SYS_RES_IRQ,		1,	RF_ACTIVE },
74	{ SYS_RES_IRQ,		2,	RF_ACTIVE },
75	{ SYS_RES_IRQ,		3,	RF_ACTIVE },
76	{ -1, 0 }
77};
78
79const struct decode_win idma_win_tbl[] = {
80	{ 0 },
81};
82const struct decode_win *idma_wins = idma_win_tbl;
83int idma_wins_no = 0;
84
85const struct decode_win xor_win_tbl[] = {
86	{ 0 },
87};
88const struct decode_win *xor_wins = xor_win_tbl;
89int xor_wins_no = 0;
90
91uint32_t
92get_tclk(void)
93{
94	uint32_t sar;
95
96	/*
97	 * On Discovery TCLK is can be configured to 166 MHz or 200 MHz.
98	 * Current setting is read from Sample At Reset register.
99	 */
100	sar = bus_space_read_4(fdtbus_bs_tag, MV_MPP_BASE, SAMPLE_AT_RESET_HI);
101	sar = (sar & TCLK_MASK) >> TCLK_SHIFT;
102
103	switch (sar) {
104	case 0:
105		return (TCLK_166MHZ);
106	case 1:
107		return (TCLK_200MHZ);
108	default:
109		panic("Unknown TCLK settings!");
110	}
111}
112