a10_machdep.c revision 259329 
1/*-
2 * Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@gmail.com>
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 259329 2013-12-13 20:43:11Z 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/machdep.h>
47
48#include <dev/fdt/fdt_common.h>
49
50#include <arm/allwinner/a10_wdog.h>
51
52/* Start of address space used for bootstrap map */
53#define DEVMAP_BOOTSTRAP_MAP_START      0xE0000000
54
55
56vm_offset_t
57initarm_lastaddr(void)
58{
59
60	return (DEVMAP_BOOTSTRAP_MAP_START - ARM_NOCACHE_KVA_SIZE);
61}
62
63void
64initarm_gpio_init(void)
65{
66}
67
68void
69initarm_late_init(void)
70{
71}
72
73#define FDT_DEVMAP_MAX		(1 + 2 + 1 + 1)
74static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
75	{ 0, 0, 0, 0, 0, }
76};
77
78/*
79 * Construct pmap_devmap[] with DT-derived config data.
80 */
81int
82platform_devmap_init(void)
83{
84	int i = 0;
85
86	fdt_devmap[i].pd_va =   0xE1C00000;
87	fdt_devmap[i].pd_pa =   0x01C00000;
88	fdt_devmap[i].pd_size = 0x00400000;	/* 4 MB */
89	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
90	fdt_devmap[i].pd_cache = PTE_DEVICE;
91
92	i++;
93
94	pmap_devmap_bootstrap_table = &fdt_devmap[0];
95
96	return (0);
97}
98
99struct arm32_dma_range *
100bus_dma_get_range(void)
101{
102	return (NULL);
103}
104
105int
106bus_dma_get_range_nb(void)
107{
108	return (0);
109}
110
111void
112cpu_reset()
113{
114	a10wd_watchdog_reset();
115	printf("Reset failed!\n");
116	while (1);
117}
118