freebsd/sys/arm/altera/socfpga/socfpga_common.c

/*-
 * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
 * All rights reserved.
 *
 * This software was developed by SRI International and the University of
 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
 * ("CTSRD"), as part of the DARPA CRASH research programme.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>

#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>

#include <machine/bus.h>
#include <machine/fdt.h>

#include <arm/altera/socfpga/socfpga_rstmgr.h>

void
cpu_reset(void)
{
	uint32_t addr, paddr;
	bus_addr_t vaddr;
	phandle_t node;

	if (rstmgr_warmreset() == 0)
		goto end;

	node = OF_finddevice("rstmgr");
	if (node == -1)
		goto end;

	if ((OF_getprop(node, "reg", &paddr, sizeof(paddr))) > 0) {
		addr = fdt32_to_cpu(paddr);
		if (bus_space_map(fdtbus_bs_tag, addr, 0x8, 0, &vaddr) == 0) {
			bus_space_write_4(fdtbus_bs_tag, vaddr,
			    RSTMGR_CTRL, CTRL_SWWARMRSTREQ);
		}
	}

end:
	while (1);
}

struct fdt_fixup_entry fdt_fixup_table[] = {
	{ NULL, NULL }
};

static int
fdt_pic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
    int *pol)
{

	if (!fdt_is_compatible(node, "arm,gic"))
		return (ENXIO);

	*interrupt = fdt32_to_cpu(intr[0]);
	*trig = INTR_TRIGGER_CONFORM;
	*pol = INTR_POLARITY_CONFORM;
	return (0);
}

fdt_pic_decode_t fdt_pic_table[] = {
	&fdt_pic_decode_ic,
	NULL
};