freebsd-nq/sys/arm/allwinner/a10_machdep.c

/*-
 * Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@freebsd.org>
 * All rights reserved.
 *
 * This code is derived from software written for Brini by Mark Brinicombe
 *
 * 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.
 *
 * from: FreeBSD: //depot/projects/arm/src/sys/arm/ti/ti_machdep.c
 */

#include "opt_ddb.h"
#include "opt_platform.h"

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

#define _ARM32_BUS_DMA_PRIVATE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>

#include <vm/vm.h>
#include <vm/pmap.h>

#include <machine/bus.h>
#include <machine/devmap.h>
#include <machine/machdep.h>
#include <machine/platform.h> 

#include <dev/fdt/fdt_common.h>

#include <arm/allwinner/a10_wdog.h>

vm_offset_t
platform_lastaddr(void)
{

	return (arm_devmap_lastaddr());
}

void
platform_probe_and_attach(void)
{
}

void
platform_gpio_init(void)
{
}

void
platform_late_init(void)
{
}

/*
 * Set up static device mappings.
 *
 * This covers all the on-chip device with 1MB section mappings, which is good
 * for performance (uses fewer TLB entries for device access).
 *
 * XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
 * shouldn't be device-mapped.  The original code mapped a 4MB block, but
 * perhaps a 1MB block would be more appropriate.
 */
int
platform_devmap_init(void)
{

	arm_devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */

	return (0);
}

struct arm32_dma_range *
bus_dma_get_range(void)
{
	return (NULL);
}

int
bus_dma_get_range_nb(void)
{
	return (0);
}

void
cpu_reset()
{
	a10wd_watchdog_reset();
	printf("Reset failed!\n");
	while (1);
}