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 #include <machine/platform.h>
49
50 #include <dev/fdt/fdt_common.h>
51
52 #include <arm/allwinner/a10_wdog.h>
53
54 vm_offset_t
platform_lastaddr(void)55 platform_lastaddr(void)
56 {
57
58 return (arm_devmap_lastaddr());
59 }
60
61 void
platform_probe_and_attach(void)62 platform_probe_and_attach(void)
63 {
64 }
65
66 void
platform_gpio_init(void)67 platform_gpio_init(void)
68 {
69 }
70
71 void
platform_late_init(void)72 platform_late_init(void)
73 {
74 }
75
76 /*
77 * Set up static device mappings.
78 *
79 * This covers all the on-chip device with 1MB section mappings, which is good
80 * for performance (uses fewer TLB entries for device access).
81 *
82 * XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
83 * shouldn't be device-mapped. The original code mapped a 4MB block, but
84 * perhaps a 1MB block would be more appropriate.
85 */
86 int
platform_devmap_init(void)87 platform_devmap_init(void)
88 {
89
90 arm_devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */
91
92 return (0);
93 }
94
95 struct arm32_dma_range *
bus_dma_get_range(void)96 bus_dma_get_range(void)
97 {
98 return (NULL);
99 }
100
101 int
bus_dma_get_range_nb(void)102 bus_dma_get_range_nb(void)
103 {
104 return (0);
105 }
106
107 void
cpu_reset()108 cpu_reset()
109 {
110 a10wd_watchdog_reset();
111 printf("Reset failed!\n");
112 while (1);
113 }
114