1/*-
2 * Copyright (c) 2012 Oleksandr Tymoshenko.
3 * Copyright (c) 1994-1998 Mark Brinicombe.
4 * Copyright (c) 1994 Brini.
5 * All rights reserved.
6 *
7 * This code is derived from software written for Brini by Mark Brinicombe
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *      This product includes software developed by Brini.
20 * 4. The name of the company nor the name of the author may be used to
21 *    endorse or promote products derived from this software without specific
22 *    prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
37 */
38
39#include "opt_ddb.h"
40#include "opt_platform.h"
41
42#include <sys/cdefs.h>
43__FBSDID("$FreeBSD: stable/11/sys/arm/broadcom/bcm2835/bcm2835_machdep.c 331897 2018-04-02 23:39:04Z gonzo $");
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/bus.h>
48#include <sys/devmap.h>
49
50#include <vm/vm.h>
51#include <vm/pmap.h>
52
53#include <machine/bus.h>
54#include <machine/machdep.h>
55#include <machine/platform.h>
56#include <machine/platformvar.h>
57
58#include <dev/fdt/fdt_common.h>
59
60#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
61#include <arm/broadcom/bcm2835/bcm2836_mp.h>
62
63#include "platform_if.h"
64
65static vm_offset_t
66bcm2835_lastaddr(platform_t plat)
67{
68
69	return (devmap_lastaddr());
70}
71
72static void
73bcm2835_late_init(platform_t plat)
74{
75	phandle_t system;
76	pcell_t cells[2];
77	int len;
78
79	system = OF_finddevice("/system");
80	if (system != 0) {
81		len = OF_getencprop(system, "linux,serial", cells,
82		    sizeof(cells));
83		if (len > 0)
84			board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]);
85
86		len = OF_getencprop(system, "linux,revision", cells,
87		    sizeof(cells));
88		if (len > 0)
89			board_set_revision(cells[0]);
90	}
91}
92
93#ifdef SOC_BCM2835
94/*
95 * Set up static device mappings.
96 * All on-chip peripherals exist in a 16MB range starting at 0x20000000.
97 * Map the entire range using 1MB section mappings.
98 */
99static int
100bcm2835_devmap_init(platform_t plat)
101{
102
103	devmap_add_entry(0x20000000, 0x01000000);
104	return (0);
105}
106#endif
107
108#ifdef SOC_BCM2836
109static int
110bcm2836_devmap_init(platform_t plat)
111{
112
113	devmap_add_entry(0x3f000000, 0x01000000);
114	return (0);
115}
116#endif
117
118
119
120static void
121bcm2835_cpu_reset(platform_t plat)
122{
123	bcmwd_watchdog_reset();
124}
125
126#ifdef SOC_BCM2835
127static platform_method_t bcm2835_methods[] = {
128	PLATFORMMETHOD(platform_devmap_init,	bcm2835_devmap_init),
129	PLATFORMMETHOD(platform_lastaddr,	bcm2835_lastaddr),
130	PLATFORMMETHOD(platform_late_init,	bcm2835_late_init),
131	PLATFORMMETHOD(platform_cpu_reset,	bcm2835_cpu_reset),
132
133	PLATFORMMETHOD_END,
134};
135FDT_PLATFORM_DEF2(bcm2835, bcm2835_legacy, "bcm2835 (legacy)", 0, "raspberrypi,model-b", 100);
136FDT_PLATFORM_DEF2(bcm2835, bcm2835, "bcm2835", 0, "brcm,bcm2835", 100);
137#endif
138
139#ifdef SOC_BCM2836
140static platform_method_t bcm2836_methods[] = {
141	PLATFORMMETHOD(platform_devmap_init,	bcm2836_devmap_init),
142	PLATFORMMETHOD(platform_lastaddr,	bcm2835_lastaddr),
143	PLATFORMMETHOD(platform_late_init,	bcm2835_late_init),
144	PLATFORMMETHOD(platform_cpu_reset,	bcm2835_cpu_reset),
145
146#ifdef SMP
147	PLATFORMMETHOD(platform_mp_start_ap,	bcm2836_mp_start_ap),
148	PLATFORMMETHOD(platform_mp_setmaxid,	bcm2836_mp_setmaxid),
149#endif
150
151	PLATFORMMETHOD_END,
152};
153FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100);
154FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100);
155#endif
156