1 /* $NetBSD: i80321_mem.c,v 1.2 2002/04/25 22:11:51 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * This file provides the mem_init() function for boards using the 40 * Intel i80321 I/O Processor. 41 */ 42 43 #include <sys/types.h> 44 #include <lib/libsa/stand.h> 45 46 #include <arm/xscale/i80321reg.h> 47 48 #include "board.h" 49 50 #define INL(x) *((__volatile uint32_t *) \ 51 (VERDE_PMMR_BASE + VERDE_MCU_BASE + (x))) 52 53 void 54 mem_init(void) 55 { 56 uint32_t sdbr, sbr0, sbr1; 57 uint32_t bank0, bank1; 58 uint32_t start, size, heap; 59 60 sdbr = INL(MCU_SDBR); 61 sbr0 = INL(MCU_SBR0); 62 sbr1 = INL(MCU_SBR1); 63 64 start = sdbr; 65 66 sdbr = (sdbr >> 25) & 0x1f; 67 68 sbr0 &= 0x3f; 69 sbr1 &= 0x3f; 70 71 bank0 = (sbr0 - sdbr) << 25; 72 bank1 = (sbr1 - sbr0) << 25; 73 74 size = bank0 + bank1; 75 76 heap = (start + size) - HEAP_SIZE; 77 78 printf(">> RAM 0x%x - 0x%x, heap at 0x%x\n", 79 start, (start + size) - 1, heap); 80 setheap((void *)heap, (void *)(start + size - 1)); 81 } 82