1 /* $NetBSD: integrator_mem.c,v 1.4 2006/01/16 19:34:53 he 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 ARM Integrator 40 * core modules. 41 */ 42 43 #include <sys/types.h> 44 #include <lib/libsa/stand.h> 45 46 #include "board.h" 47 48 #define INL(x) *((volatile uint32_t *) (x)) 49 50 void 51 mem_init(void) 52 { 53 uint32_t cm_sdram; 54 uint32_t heap, size; 55 56 cm_sdram = INL(0x10000020); 57 58 switch ((cm_sdram >> 2) & 0x7) { 59 case 0: 60 size = 16 * 1024 * 1024; 61 break; 62 63 case 1: 64 size = 32 * 1024 * 1024; 65 break; 66 67 case 2: 68 size = 64 * 1024 * 1024; 69 break; 70 71 case 3: 72 size = 128 * 1024 * 1024; 73 break; 74 75 case 4: 76 size = 256 * 1024 * 1024; 77 break; 78 79 default: 80 printf("** CM_SDRAM retuns unknown value, using 16M\n"); 81 size = 16 * 1024 * 1024; 82 break; 83 } 84 85 /* Start is always 0. */ 86 heap = size - BOARD_HEAP_SIZE; 87 88 printf(">> RAM 0x%x - 0x%x, heap at 0x%x\n", 0, size - 1, heap); 89 setheap((void *)heap, (void *)(size - 1)); 90 } 91