xref: /freebsd/sys/arm/freescale/vybrid/vf_machdep.c (revision e8d8bef961a50d4dc22501cde4fb9fb0be1b2532)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
5  * All rights reserved.
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 
29 #include "opt_platform.h"
30 
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/devmap.h>
37 
38 #include <vm/vm.h>
39 
40 #include <dev/ofw/openfirm.h>
41 
42 #include <machine/bus.h>
43 #include <machine/fdt.h>
44 #include <machine/platform.h>
45 #include <machine/platformvar.h>
46 
47 #include <arm/freescale/vybrid/vf_src.h>
48 
49 #include "platform_if.h"
50 
51 static int
52 vf_devmap_init(platform_t plat)
53 {
54 
55 	devmap_add_entry(0x40000000, 0x100000);
56 
57 	return (0);
58 }
59 
60 static void
61 vf_cpu_reset(platform_t plat)
62 {
63 	phandle_t src;
64 	uint32_t paddr;
65 	bus_addr_t vaddr;
66 
67 	if (src_swreset() == 0)
68 		goto end;
69 
70 	src = OF_finddevice("src");
71 	if ((src != -1) && (OF_getencprop(src, "reg", &paddr, sizeof(paddr))) > 0) {
72 		if (bus_space_map(fdtbus_bs_tag, paddr, 0x10, 0, &vaddr) == 0) {
73 			bus_space_write_4(fdtbus_bs_tag, vaddr, 0x00, SW_RST);
74 		}
75 	}
76 
77 end:
78 	while (1);
79 }
80 
81 static platform_method_t vf_methods[] = {
82 	PLATFORMMETHOD(platform_devmap_init,	vf_devmap_init),
83 	PLATFORMMETHOD(platform_cpu_reset,	vf_cpu_reset),
84 
85 	PLATFORMMETHOD_END,
86 };
87 
88 FDT_PLATFORM_DEF(vf, "vybrid", 0, "freescale,vybrid", 200);
89