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("$FreeBSD$");
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
53 vm_offset_t
initarm_lastaddr(void)54 initarm_lastaddr(void)
55 {
56
57 return (arm_devmap_lastaddr());
58 }
59
60 void
initarm_early_init(void)61 initarm_early_init(void)
62 {
63 }
64
65 void
initarm_gpio_init(void)66 initarm_gpio_init(void)
67 {
68 }
69
70 void
initarm_late_init(void)71 initarm_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 */
85 int
initarm_devmap_init(void)86 initarm_devmap_init(void)
87 {
88
89 arm_devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */
90
91 return (0);
92 }
93
94 struct arm32_dma_range *
bus_dma_get_range(void)95 bus_dma_get_range(void)
96 {
97 return (NULL);
98 }
99
100 int
bus_dma_get_range_nb(void)101 bus_dma_get_range_nb(void)
102 {
103 return (0);
104 }
105
106 void
cpu_reset()107 cpu_reset()
108 {
109 a10wd_watchdog_reset();
110 printf("Reset failed!\n");
111 while (1);
112 }
113