sys/arch/powerpc/ibm4xx/ibm40x_machdep.c

   1 /*      $NetBSD: ibm40x_machdep.c,v 1.2.4.4 2005/01/24 08:34:26 skrll Exp $     */
   2
   3 /*
   4  * Copyright 2001, 2002 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Eduardo Horvath and Simon Burge 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  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
  40  * Copyright (C) 1995, 1996 TooLs GmbH.
  41  * All rights reserved.
  42  *
  43  * Redistribution and use in source and binary forms, with or without
  44  * modification, are permitted provided that the following conditions
  45  * are met:
  46  * 1. Redistributions of source code must retain the above copyright
  47  *    notice, this list of conditions and the following disclaimer.
  48  * 2. Redistributions in binary form must reproduce the above copyright
  49  *    notice, this list of conditions and the following disclaimer in the
  50  *    documentation and/or other materials provided with the distribution.
  51  * 3. All advertising materials mentioning features or use of this software
  52  *    must display the following acknowledgement:
  53  *      This product includes software developed by TooLs GmbH.
  54  * 4. The name of TooLs GmbH may not be used to endorse or promote products
  55  *    derived from this software without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
  58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  60  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  61  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  62  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  63  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  64  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  65  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  66  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  67  */
  68
  69 #include <sys/cdefs.h>
  70 __KERNEL_RCSID(0, "$NetBSD: ibm40x_machdep.c,v 1.2.4.4 2005/01/24 08:34:26 skrll Exp $");
  71
  72 #include <sys/param.h>
  73 #include <sys/exec.h>
  74 #include <sys/systm.h>
  75
  76 #include <machine/powerpc.h>
  77
  78 /*
  79  * Global variables used here and there
  80  */
  81 #define MEMREGIONS      (8)
  82 struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */
  83 struct mem_region availmemr[MEMREGIONS];/* Who's supposed to set these up? */
  84
  85 void
  86 ibm40x_memsize_init(u_int memsize, u_int startkernel)
  87 {
  88
  89         /* Initialize cache info for memcpy, etc. */
  90         cpu_probe_cache();
  91
  92         memset(physmemr, 0, sizeof physmemr);
  93         memset(availmemr, 0, sizeof availmemr);
  94
  95         /* Setup physical memory */
  96         physmemr[0].start = 0;
  97         physmemr[0].size = memsize & ~PGOFSET;
  98
  99         /* Setup availabl memory, lower memory reserved by evb-BIOS */
 100         availmemr[0].start = startkernel;
 101         availmemr[0].size = memsize - availmemr[0].start;
 102 }
 103
 104 void
 105 mem_regions(struct mem_region **mem, struct mem_region **avail)
 106 {
 107         *mem = physmemr;
 108         *avail = availmemr;
 109 }