bcm2835_machdep.c revision 259335 
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 259335 2013-12-13 21:40:12Z 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/machdep.h>
56
57#include <dev/fdt/fdt_common.h>
58
59#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
60
61/* Start of address space used for bootstrap map */
62#define DEVMAP_BOOTSTRAP_MAP_START	0xE0000000
63
64vm_offset_t
65initarm_lastaddr(void)
66{
67
68	return (DEVMAP_BOOTSTRAP_MAP_START);
69}
70
71void
72initarm_gpio_init(void)
73{
74}
75
76void
77initarm_late_init(void)
78{
79	phandle_t system;
80	pcell_t cells[2];
81	int len;
82
83	system = OF_finddevice("/system");
84	if (system != 0) {
85		len = OF_getprop(system, "linux,serial", &cells, sizeof(cells));
86		if (len > 0)
87			board_set_serial(fdt64_to_cpu(*((uint64_t *)cells)));
88
89		len = OF_getprop(system, "linux,revision", &cells, sizeof(cells));
90		if (len > 0)
91			board_set_revision(fdt32_to_cpu(*((uint32_t *)cells)));
92	}
93}
94
95#define FDT_DEVMAP_MAX	(2)		// FIXME
96static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
97	{ 0, 0, 0, 0, 0, }
98};
99
100
101/*
102 * Construct pmap_devmap[] with DT-derived config data.
103 */
104int
105platform_devmap_init(void)
106{
107	int i = 0;
108
109	fdt_devmap[i].pd_va = 0xf2000000;
110	fdt_devmap[i].pd_pa = 0x20000000;
111	fdt_devmap[i].pd_size = 0x01000000;       /* 1 MB */
112	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
113	fdt_devmap[i].pd_cache = PTE_DEVICE;
114	i++;
115
116	pmap_devmap_bootstrap_table = &fdt_devmap[0];
117	return (0);
118}
119
120struct arm32_dma_range *
121bus_dma_get_range(void)
122{
123
124	return (NULL);
125}
126
127int
128bus_dma_get_range_nb(void)
129{
130
131	return (0);
132}
133
134void
135cpu_reset()
136{
137	bcmwd_watchdog_reset();
138	while (1);
139}
140
141