1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2012 Oleksandr Tymoshenko.
5 * Copyright (c) 1994-1998 Mark Brinicombe.
6 * Copyright (c) 1994 Brini.
7 * All rights reserved.
8 *
9 * This code is derived from software written for Brini by Mark Brinicombe
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by Brini.
22 * 4. The name of the company nor the name of the author may be used to
23 * endorse or promote products derived from this software without specific
24 * prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
39 */
40
41 #include "opt_ddb.h"
42 #include "opt_platform.h"
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/bus.h>
47 #include <sys/devmap.h>
48
49 #include <vm/vm.h>
50 #include <vm/pmap.h>
51
52 #include <machine/bus.h>
53 #include <machine/machdep.h>
54 #include <machine/platform.h>
55 #include <machine/platformvar.h>
56
57 #include <dev/ofw/openfirm.h>
58
59 #include <arm/broadcom/bcm2835/bcm2835_wdog.h>
60 #include <arm/broadcom/bcm2835/bcm2836_mp.h>
61
62 #include "platform_if.h"
63
64 #ifdef SOC_BCM2836
65 static platform_devmap_init_t bcm2836_devmap_init;
66 #endif
67 static platform_late_init_t bcm2835_late_init;
68 static platform_cpu_reset_t bcm2835_cpu_reset;
69
70 static void
bcm2835_late_init(platform_t plat)71 bcm2835_late_init(platform_t plat)
72 {
73 phandle_t system;
74 pcell_t cells[2];
75 int len;
76
77 system = OF_finddevice("/system");
78 if (system != -1) {
79 len = OF_getencprop(system, "linux,serial", cells,
80 sizeof(cells));
81 if (len > 0)
82 board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]);
83
84 len = OF_getencprop(system, "linux,revision", cells,
85 sizeof(cells));
86 if (len > 0)
87 board_set_revision(cells[0]);
88 }
89 }
90
91
92 #ifdef SOC_BCM2836
93 static int
bcm2836_devmap_init(platform_t plat)94 bcm2836_devmap_init(platform_t plat)
95 {
96
97 devmap_add_entry(0x3f000000, 0x01000000);
98 return (0);
99 }
100 #endif
101
102 static void
bcm2835_cpu_reset(platform_t plat)103 bcm2835_cpu_reset(platform_t plat)
104 {
105 bcmwd_watchdog_reset();
106 }
107
108
109 #if defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837)
110 static platform_method_t bcm2836_methods[] = {
111 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init),
112 PLATFORMMETHOD(platform_late_init, bcm2835_late_init),
113 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset),
114
115 #ifdef SMP
116 PLATFORMMETHOD(platform_mp_start_ap, bcm2836_mp_start_ap),
117 PLATFORMMETHOD(platform_mp_setmaxid, bcm2836_mp_setmaxid),
118 #endif
119
120 PLATFORMMETHOD_END,
121 };
122 FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100);
123 FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100);
124 FDT_PLATFORM_DEF2(bcm2836, bcm2837, "bcm2837", 0, "brcm,bcm2837", 100);
125 #endif /* defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) */
126