/*      $NetBSD: i80312_mem.c,v 1.4 2006/01/16 19:34:53 he Exp $        */

/*
* Copyright (c) 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/

/*
* This file provides the mem_init() function for boards using the
* Intel i80312 companion I/O chip.
*/

#include <sys/types.h>
#include <lib/libsa/stand.h>

#include <arm/xscale/i80312reg.h>

#include "board.h"

#define INL(x)          *((volatile uint32_t *) \
                         (I80312_PMMR_BASE + I80312_MEM_BASE + (x)))

void
mem_init(void)
{
       uint32_t sdbr, sbr0, sbr1;
       uint32_t bank0, bank1;
       uint32_t start, size, heap;

       sdbr = INL(I80312_MEM_SB);
       sbr0 = INL(I80312_MEM_SB0);
       sbr1 = INL(I80312_MEM_SB1);

       start = sdbr;

       sdbr = (sdbr >> 25) & 0xf;

       sbr0 = ((sbr0 >> 3) & 0x1f) - sdbr;
       sbr1 = ((sbr1 >> 3) & 0x1f) - sbr0;

       bank0 = sbr0 << 25;
       bank1 = sbr1 << 25;

       size = bank0 + bank1;

       heap = (start + size) - BOARD_HEAP_SIZE;

       printf(">> RAM 0x%x - 0x%x, heap at 0x%x\n",
           start, (start + size) - 1, heap);
       setheap((void *)heap, (void *)(start + size - 1));
}