openwrt-xburst/target/linux/brcm47xx/files/arch/mips/bcm947xx/prom.c

/*
 *  Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``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  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.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>

#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <asm/pmon.h>
#include "../cfe/cfe_private.h"

const char *get_system_type(void)
{
	return "Broadcom BCM47xx";
}

void __init prom_init(void)
{
	unsigned long mem;

        mips_machgroup = MACH_GROUP_BRCM;
        mips_machtype = MACH_BCM47XX;

	cfe_setup(fw_arg0, fw_arg1, fw_arg2, fw_arg3);
		
	/* Figure out memory size by finding aliases */
	for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) {
		if (*(unsigned long *)((unsigned long)(prom_init) + mem) == 
		    *(unsigned long *)(prom_init))
			break;
	}

	add_memory_region(0, mem, BOOT_MEM_RAM);
}

void __init prom_free_prom_memory(void)
{
}