/* $OpenBSD: i80321_mcu.c,v 1.2 2006/05/29 17:27:31 drahn Exp $ */ /* $NetBSD: i80321_mcu.c,v 1.3 2005/12/11 12:16:51 christos Exp $ */ /* * Copyright (c) 2001, 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. */ /* * Intel i80321 I/O Processor memory controller support. */ #include <sys/param.h> #include <sys/systm.h> #include <machine/bus.h> #include <arm/xscale/i80321reg.h> #include <arm/xscale/i80321var.h> /* * i80321_sdram_bounds: * * Retrieve the start and size of SDRAM. */ void i80321_sdram_bounds(bus_space_tag_t st, bus_space_handle_t sh, paddr_t *start, psize_t *size) { uint32_t sdbr, sbr0, sbr1; uint32_t bank0, bank1; sdbr = bus_space_read_4(st, sh, MCU_SDBR); sbr0 = bus_space_read_4(st, sh, MCU_SBR0); sbr1 = bus_space_read_4(st, sh, MCU_SBR1); #ifdef VERBOSE_INIT_ARM printf("i80321: SBDR = 0x%08x SBR0 = 0x%08x SBR1 = 0x%08x\n", sdbr, sbr0, sbr1); #endif *start = sdbr; sdbr = (sdbr >> 25) & 0x1f; sbr0 &= 0x3f; sbr1 &= 0x3f; bank0 = (sbr0 - sdbr) << 25; bank1 = (sbr1 - sbr0) << 25; #ifdef VERBOSE_INIT_ARM printf("i80321: BANK0 = 0x%08x BANK1 = 0x%08x\n", bank0, bank1); #endif *size = bank0 + bank1; }