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
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
44
45 #define _ARM32_BUS_DMA_PRIVATE
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/bus.h>
49
50 #include <vm/vm.h>
51 #include <vm/pmap.h>
52
53 #include <machine/bus.h>
54 #include <machine/devmap.h>
55 #include <machine/machdep.h>
56 #include <machine/platform.h>
57 #include <machine/platformvar.h>
58
59 #include <dev/fdt/fdt_common.h>
60
61 #include <arm/broadcom/bcm2835/bcm2835_wdog.h>
62
63 #include "platform_if.h"
64
65 static vm_offset_t
bcm2835_lastaddr(platform_t plat)66 bcm2835_lastaddr(platform_t plat)
67 {
68
69 return (arm_devmap_lastaddr());
70 }
71
72 static void
bcm2835_late_init(platform_t plat)73 bcm2835_late_init(platform_t plat)
74 {
75 phandle_t system;
76 pcell_t cells[2];
77 int len;
78
79 system = OF_finddevice("/system");
80 if (system != 0) {
81 len = OF_getprop(system, "linux,serial", &cells, sizeof(cells));
82 if (len > 0)
83 board_set_serial(fdt64_to_cpu(*((uint64_t *)cells)));
84
85 len = OF_getprop(system, "linux,revision", &cells, sizeof(cells));
86 if (len > 0)
87 board_set_revision(fdt32_to_cpu(*((uint32_t *)cells)));
88 }
89 }
90
91 #ifdef SOC_BCM2835
92 /*
93 * Set up static device mappings.
94 * All on-chip peripherals exist in a 16MB range starting at 0x20000000.
95 * Map the entire range using 1MB section mappings.
96 */
97 static int
bcm2835_devmap_init(platform_t plat)98 bcm2835_devmap_init(platform_t plat)
99 {
100
101 arm_devmap_add_entry(0x20000000, 0x01000000);
102 return (0);
103 }
104 #endif
105
106 #ifdef SOC_BCM2836
107 static int
bcm2836_devmap_init(platform_t plat)108 bcm2836_devmap_init(platform_t plat)
109 {
110
111 arm_devmap_add_entry(0x3f000000, 0x01000000);
112 return (0);
113 }
114 #endif
115
116 struct arm32_dma_range *
bus_dma_get_range(void)117 bus_dma_get_range(void)
118 {
119
120 return (NULL);
121 }
122
123 int
bus_dma_get_range_nb(void)124 bus_dma_get_range_nb(void)
125 {
126
127 return (0);
128 }
129
130 void
cpu_reset()131 cpu_reset()
132 {
133 bcmwd_watchdog_reset();
134 while (1);
135 }
136
137 #ifdef SOC_BCM2835
138 static platform_method_t bcm2835_methods[] = {
139 PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init),
140 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr),
141 PLATFORMMETHOD(platform_late_init, bcm2835_late_init),
142
143 PLATFORMMETHOD_END,
144 };
145 FDT_PLATFORM_DEF(bcm2835, "bcm2835", 0, "raspberrypi,model-b");
146 #endif
147
148 #ifdef SOC_BCM2836
149 static platform_method_t bcm2836_methods[] = {
150 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init),
151 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr),
152 PLATFORMMETHOD(platform_late_init, bcm2835_late_init),
153
154 PLATFORMMETHOD_END,
155 };
156 FDT_PLATFORM_DEF(bcm2836, "bcm2836", 0, "brcm,bcm2709");
157 #endif
158