a10_machdep.c revision 266337 
1/*-
2 * Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@freebsd.org>
3 * All rights reserved.
4 *
5 * This code is derived from software written for Brini by Mark Brinicombe
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * from: FreeBSD: //depot/projects/arm/src/sys/arm/ti/ti_machdep.c
29 */
30
31#include "opt_ddb.h"
32#include "opt_platform.h"
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD: stable/10/sys/arm/allwinner/a10_machdep.c 266337 2014-05-17 18:53:36Z ian $");
36
37#define _ARM32_BUS_DMA_PRIVATE
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/bus.h>
41
42#include <vm/vm.h>
43#include <vm/pmap.h>
44
45#include <machine/bus.h>
46#include <machine/devmap.h>
47#include <machine/machdep.h>
48
49#include <dev/fdt/fdt_common.h>
50
51#include <arm/allwinner/a10_wdog.h>
52
53vm_offset_t
54initarm_lastaddr(void)
55{
56
57	return (arm_devmap_lastaddr());
58}
59
60void
61initarm_early_init(void)
62{
63}
64
65void
66initarm_gpio_init(void)
67{
68}
69
70void
71initarm_late_init(void)
72{
73}
74
75/*
76 * Set up static device mappings.
77 *
78 * This covers all the on-chip device with 1MB section mappings, which is good
79 * for performance (uses fewer TLB entries for device access).
80 *
81 * XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
82 * shouldn't be device-mapped.  The original code mapped a 4MB block, but
83 * perhaps a 1MB block would be more appropriate.
84 */
85int
86initarm_devmap_init(void)
87{
88
89	arm_devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */
90
91	return (0);
92}
93
94struct arm32_dma_range *
95bus_dma_get_range(void)
96{
97	return (NULL);
98}
99
100int
101bus_dma_get_range_nb(void)
102{
103	return (0);
104}
105
106void
107cpu_reset()
108{
109	a10wd_watchdog_reset();
110	printf("Reset failed!\n");
111	while (1);
112}
113