bcm2835_machdep.c revision 266084 
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#include "opt_global.h"
42
43#include <sys/cdefs.h>
44__FBSDID("$FreeBSD: stable/10/sys/arm/broadcom/bcm2835/bcm2835_machdep.c 266084 2014-05-14 19:18:58Z ian $");
45
46#define _ARM32_BUS_DMA_PRIVATE
47#include <sys/param.h>
48#include <sys/systm.h>
49#include <sys/bus.h>
50
51#include <vm/vm.h>
52#include <vm/pmap.h>
53
54#include <machine/bus.h>
55#include <machine/devmap.h>
56#include <machine/machdep.h>
57
58#include <dev/fdt/fdt_common.h>
59
60#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
61
62vm_offset_t
63initarm_lastaddr(void)
64{
65
66	return (arm_devmap_lastaddr());
67}
68
69void
70initarm_early_init(void)
71{
72
73}
74
75void
76initarm_gpio_init(void)
77{
78}
79
80void
81initarm_late_init(void)
82{
83	phandle_t system;
84	pcell_t cells[2];
85	int len;
86
87	system = OF_finddevice("/system");
88	if (system != 0) {
89		len = OF_getprop(system, "linux,serial", &cells, sizeof(cells));
90		if (len > 0)
91			board_set_serial(fdt64_to_cpu(*((uint64_t *)cells)));
92
93		len = OF_getprop(system, "linux,revision", &cells, sizeof(cells));
94		if (len > 0)
95			board_set_revision(fdt32_to_cpu(*((uint32_t *)cells)));
96	}
97}
98
99/*
100 * Set up static device mappings.
101 * All on-chip peripherals exist in a 16MB range starting at 0x20000000.
102 * Map the entire range using 1MB section mappings.
103 */
104int
105initarm_devmap_init(void)
106{
107
108	arm_devmap_add_entry(0x20000000, 0x01000000);
109	return (0);
110}
111
112struct arm32_dma_range *
113bus_dma_get_range(void)
114{
115
116	return (NULL);
117}
118
119int
120bus_dma_get_range_nb(void)
121{
122
123	return (0);
124}
125
126void
127cpu_reset()
128{
129	bcmwd_watchdog_reset();
130	while (1);
131}
132
133