1/*-
2 * Copyright (c) 1994-1998 Mark Brinicombe.
3 * Copyright (c) 1994 Brini.
4 * All rights reserved.
5 *
6 * This code is derived from software written for Brini by Mark Brinicombe
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *      This product includes software developed by Brini.
19 * 4. The name of the company nor the name of the author may be used to
20 *    endorse or promote products derived from this software without specific
21 *    prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
36 */
37
38#include "opt_ddb.h"
39#include "opt_platform.h"
40
41#include <sys/cdefs.h>
42__FBSDID("$FreeBSD$");
43
44#define _ARM32_BUS_DMA_PRIVATE
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/bus.h>
48#include <sys/devmap.h>
49
50#include <vm/vm.h>
51#include <vm/pmap.h>
52
53#include <machine/bus.h>
54#include <machine/fdt.h>
55#include <machine/machdep.h>
56#include <machine/platform.h>
57
58#include <arm/lpc/lpcreg.h>
59#include <arm/lpc/lpcvar.h>
60
61#include <dev/fdt/fdt_common.h>
62
63vm_offset_t
64platform_lastaddr(void)
65{
66
67	return (devmap_lastaddr());
68}
69
70void
71platform_probe_and_attach(void)
72{
73}
74
75void
76platform_gpio_init(void)
77{
78
79	/*
80	 * Set initial values of GPIO output ports
81	 */
82	lpc_gpio_init();
83}
84
85void
86platform_late_init(void)
87{
88}
89
90/*
91 * Add a single static device mapping.
92 * The values used were taken from the ranges property of the SoC node in the
93 * dts file when this code was converted to devmap_add_entry().
94 */
95int
96platform_devmap_init(void)
97{
98
99	devmap_add_entry(LPC_DEV_PHYS_BASE, LPC_DEV_SIZE);
100	return (0);
101}
102
103struct arm32_dma_range *
104bus_dma_get_range(void)
105{
106
107	return (NULL);
108}
109
110int
111bus_dma_get_range_nb(void)
112{
113
114	return (0);
115}
116
117void
118cpu_reset(void)
119{
120	bus_space_tag_t bst;
121	bus_space_handle_t bsh;
122
123	bst = fdtbus_bs_tag;
124
125	/* Enable WDT */
126	bus_space_map(bst, LPC_CLKPWR_PHYS_BASE, LPC_CLKPWR_SIZE, 0, &bsh);
127	bus_space_write_4(bst, bsh, LPC_CLKPWR_TIMCLK_CTRL,
128	    LPC_CLKPWR_TIMCLK_CTRL_WATCHDOG);
129	bus_space_unmap(bst, bsh, LPC_CLKPWR_SIZE);
130
131	/* Instant assert of RESETOUT_N with pulse length 1ms */
132	bus_space_map(bst, LPC_WDTIM_PHYS_BASE, LPC_WDTIM_SIZE, 0, &bsh);
133	bus_space_write_4(bst, bsh, LPC_WDTIM_PULSE, 13000);
134	bus_space_write_4(bst, bsh, LPC_WDTIM_MCTRL, 0x70);
135	bus_space_unmap(bst, bsh, LPC_WDTIM_SIZE);
136
137	for (;;)
138		continue;
139}
140
141