zy7_machdep.c revision 331722 
1/*-
2 * Copyright (c) 2013 Thomas Skibo
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/arm/xilinx/zy7_machdep.c 331722 2018-03-29 02:50:57Z eadler $
27 */
28
29/*
30 * Machine dependent code for Xilinx Zynq-7000 Soc.
31 *
32 * Reference: Zynq-7000 All Programmable SoC Technical Reference Manual.
33 * (v1.4) November 16, 2012.  Xilinx doc UG585.
34 */
35
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: stable/11/sys/arm/xilinx/zy7_machdep.c 331722 2018-03-29 02:50:57Z eadler $");
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/bus.h>
42#include <sys/devmap.h>
43
44#include <vm/vm.h>
45#include <vm/pmap.h>
46
47#include <dev/fdt/fdt_common.h>
48
49#include <machine/bus.h>
50#include <machine/machdep.h>
51#include <machine/platform.h>
52
53#include <arm/xilinx/zy7_reg.h>
54
55void (*zynq7_cpu_reset)(void);
56
57vm_offset_t
58platform_lastaddr(void)
59{
60
61	return (devmap_lastaddr());
62}
63
64void
65platform_probe_and_attach(void)
66{
67
68}
69
70void
71platform_gpio_init(void)
72{
73}
74
75void
76platform_late_init(void)
77{
78}
79
80/*
81 * Set up static device mappings.  Not strictly necessary -- simplebus will
82 * dynamically establish mappings as needed -- but doing it this way gets us
83 * nice efficient 1MB section mappings.
84 */
85int
86platform_devmap_init(void)
87{
88
89	devmap_add_entry(ZYNQ7_PSIO_HWBASE, ZYNQ7_PSIO_SIZE);
90	devmap_add_entry(ZYNQ7_PSCTL_HWBASE, ZYNQ7_PSCTL_SIZE);
91
92	return (0);
93}
94
95
96#ifndef INTRNG
97static int
98fdt_gic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
99    int *pol)
100{
101
102	if (!fdt_is_compatible(node, "arm,gic"))
103		return (ENXIO);
104
105	*interrupt = fdt32_to_cpu(intr[0]);
106	*trig = INTR_TRIGGER_CONFORM;
107	*pol = INTR_POLARITY_CONFORM;
108
109	return (0);
110}
111
112fdt_pic_decode_t fdt_pic_table[] = {
113	&fdt_gic_decode_ic,
114	NULL
115};
116#endif
117
118void
119cpu_reset(void)
120{
121	if (zynq7_cpu_reset != NULL)
122		(*zynq7_cpu_reset)();
123
124	printf("cpu_reset: no platform cpu_reset.  hanging.\n");
125	for (;;)
126		;
127}
128