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/*-
* Copyright (c) 2006 Olivier Houchard
* All rights reserved.
*
* 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 ``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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/xscale/i8134x/i81342_mcu.c 187340 2009-01-16 19:31:27Z cognet $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <arm/xscale/i8134x/i81342reg.h>
#include <arm/xscale/i8134x/i81342var.h>
void
i81342_sdram_bounds(bus_space_tag_t bt, bus_space_handle_t bh,
vm_paddr_t *start, vm_size_t *size)
{
uint32_t reg;
int bank_nb;
reg = bus_space_read_4(bt, bh, SMC_SDBR);
*start = (reg & SMC_SDBR_BASEADDR_MASK);
reg = bus_space_read_4(bt, bh, SMC_SBSR);
if (reg & SMC_SBSR_BANK_NB)
bank_nb = 1;
else
bank_nb = 2;
*size = (reg & SMC_SBSR_BANK_SZ_MASK) * bank_nb;
}