integrator_mem.c revision 1.2.6.2
1 1.2.6.2 nathanw /* $NetBSD: integrator_mem.c,v 1.2.6.2 2002/06/20 03:38:33 nathanw Exp $ */ 2 1.2.6.2 nathanw 3 1.2.6.2 nathanw /* 4 1.2.6.2 nathanw * Copyright (c) 2002 Wasabi Systems, Inc. 5 1.2.6.2 nathanw * All rights reserved. 6 1.2.6.2 nathanw * 7 1.2.6.2 nathanw * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 1.2.6.2 nathanw * 9 1.2.6.2 nathanw * Redistribution and use in source and binary forms, with or without 10 1.2.6.2 nathanw * modification, are permitted provided that the following conditions 11 1.2.6.2 nathanw * are met: 12 1.2.6.2 nathanw * 1. Redistributions of source code must retain the above copyright 13 1.2.6.2 nathanw * notice, this list of conditions and the following disclaimer. 14 1.2.6.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.6.2 nathanw * notice, this list of conditions and the following disclaimer in the 16 1.2.6.2 nathanw * documentation and/or other materials provided with the distribution. 17 1.2.6.2 nathanw * 3. All advertising materials mentioning features or use of this software 18 1.2.6.2 nathanw * must display the following acknowledgement: 19 1.2.6.2 nathanw * This product includes software developed for the NetBSD Project by 20 1.2.6.2 nathanw * Wasabi Systems, Inc. 21 1.2.6.2 nathanw * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.2.6.2 nathanw * or promote products derived from this software without specific prior 23 1.2.6.2 nathanw * written permission. 24 1.2.6.2 nathanw * 25 1.2.6.2 nathanw * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.2.6.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.6.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.6.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.2.6.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.6.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.6.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.6.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.6.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.6.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.6.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 36 1.2.6.2 nathanw */ 37 1.2.6.2 nathanw 38 1.2.6.2 nathanw /* 39 1.2.6.2 nathanw * This file provides the mem_init() function for ARM Integrator 40 1.2.6.2 nathanw * core modules. 41 1.2.6.2 nathanw */ 42 1.2.6.2 nathanw 43 1.2.6.2 nathanw #include <sys/types.h> 44 1.2.6.2 nathanw #include <lib/libsa/stand.h> 45 1.2.6.2 nathanw 46 1.2.6.2 nathanw #include "board.h" 47 1.2.6.2 nathanw 48 1.2.6.2 nathanw #define INL(x) *((__volatile uint32_t *) (x)) 49 1.2.6.2 nathanw 50 1.2.6.2 nathanw void 51 1.2.6.2 nathanw mem_init(void) 52 1.2.6.2 nathanw { 53 1.2.6.2 nathanw uint32_t cm_sdram; 54 1.2.6.2 nathanw uint32_t heap, size; 55 1.2.6.2 nathanw 56 1.2.6.2 nathanw cm_sdram = INL(0x10000020); 57 1.2.6.2 nathanw 58 1.2.6.2 nathanw switch ((cm_sdram >> 2) & 0x7) { 59 1.2.6.2 nathanw case 0: 60 1.2.6.2 nathanw size = 16 * 1024 * 1024; 61 1.2.6.2 nathanw break; 62 1.2.6.2 nathanw 63 1.2.6.2 nathanw case 1: 64 1.2.6.2 nathanw size = 32 * 1024 * 1024; 65 1.2.6.2 nathanw break; 66 1.2.6.2 nathanw 67 1.2.6.2 nathanw case 2: 68 1.2.6.2 nathanw size = 64 * 1024 * 1024; 69 1.2.6.2 nathanw break; 70 1.2.6.2 nathanw 71 1.2.6.2 nathanw case 3: 72 1.2.6.2 nathanw size = 128 * 1024 * 1024; 73 1.2.6.2 nathanw break; 74 1.2.6.2 nathanw 75 1.2.6.2 nathanw case 4: 76 1.2.6.2 nathanw size = 256 * 1024 * 1024; 77 1.2.6.2 nathanw break; 78 1.2.6.2 nathanw 79 1.2.6.2 nathanw default: 80 1.2.6.2 nathanw printf("** CM_SDRAM retuns unknown value, using 16M\n"); 81 1.2.6.2 nathanw size = 16 * 1024 * 1024; 82 1.2.6.2 nathanw break; 83 1.2.6.2 nathanw } 84 1.2.6.2 nathanw 85 1.2.6.2 nathanw /* Start is always 0. */ 86 1.2.6.2 nathanw heap = size - HEAP_SIZE; 87 1.2.6.2 nathanw 88 1.2.6.2 nathanw printf(">> RAM 0x%x - 0x%x, heap at 0x%x\n", 0, size - 1, heap); 89 1.2.6.2 nathanw setheap((void *)heap, (void *)(size - 1)); 90 1.2.6.2 nathanw } 91
Indexes created Thu Oct 30 03:10:01 GMT 2025