2 * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
3 * Copyright (c) 2015 Semihalf.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include "opt_platform.h"
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/kernel.h>
39 #include <dev/fdt/fdt_common.h>
40 #include <dev/ofw/openfirm.h>
42 #include <machine/bus.h>
43 #include <machine/fdt.h>
44 #include <machine/intr.h>
47 #define LOAD_MIN 0x00000001
48 #define LOAD_MAX 0xFFFFFFFF
49 #define WDTVALUE 0x004
50 #define WDTCONTROL 0x008
51 /* control register masks */
52 #define INT_ENABLE (1 << 0)
53 #define RESET_ENABLE (1 << 1)
55 #define UNLOCK 0x1ACCE551
56 #define LOCK 0x00000001
58 extern bus_addr_t al_devmap_pa;
60 static int alpine_get_wdt_base(uint32_t *pbase, uint32_t *psize);
61 static int alpine_pic_decode_fdt(uint32_t iparent, uint32_t *intr,
62 int *interrupt, int *trig, int *pol);
64 int alpine_get_devmap_base(bus_addr_t *pa, bus_addr_t *size);
66 int alpine_get_devmap_base(bus_addr_t *pa, bus_addr_t *size)
70 if ((node = OF_finddevice("/")) == 0)
73 if ((node = fdt_find_compatible(node, "simple-bus", 1)) == 0)
76 return fdt_get_range(node, 0, pa, size);
80 alpine_get_wdt_base(uint32_t *pbase, uint32_t *psize)
86 if (pbase == NULL || psize == NULL)
89 if ((node = OF_finddevice("/")) == -1)
92 if ((node = fdt_find_compatible(node, "simple-bus", 1)) == 0)
96 fdt_find_compatible(node, "arm,sp805", 1)) == 0)
99 if (fdt_regsize(node, &base, &size))
111 uint32_t wdbase, wdsize;
115 ret = alpine_get_wdt_base(&wdbase, &wdsize);
117 printf("Unable to get WDT base, do power down manually...");
121 ret = bus_space_map(fdtbus_bs_tag, al_devmap_pa + wdbase,
122 wdsize, 0, &wdbaddr);
124 printf("Unable to map WDT base, do power down manually...");
128 bus_space_write_4(fdtbus_bs_tag, wdbaddr, WDTLOCK, UNLOCK);
129 bus_space_write_4(fdtbus_bs_tag, wdbaddr, WDTLOAD, LOAD_MIN);
130 bus_space_write_4(fdtbus_bs_tag, wdbaddr, WDTCONTROL, INT_ENABLE | RESET_ENABLE);
138 alpine_pic_decode_fdt(uint32_t iparent, uint32_t *intr, int *interrupt,
143 rv = gic_decode_fdt(iparent, intr, interrupt, trig, pol);
145 /* This was recognized as our PIC and decoded. */
146 interrupt = FDT_MAP_IRQ(iparent, interrupt);
148 /* Configure the interrupt if callback provided */
150 (*arm_config_irq)(*interrupt, *trig, *pol);
155 fdt_pic_decode_t fdt_pic_table[] = {
156 &alpine_pic_decode_fdt,