sys/boot/ofw/libofw/ofw_memory.c

   1 /*
   2  * Copyright (c) 2001 Benno Rice
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/boot/ofw/libofw/ofw_memory.c,v 1.3 2002/07/18 12:39:02 benno Exp $
  27  * $DragonFly: src/sys/boot/ofw/libofw/ofw_memory.c,v 1.1 2003/11/10 06:08:37 dillon Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/types.h>
  32
  33 #include <stand.h>
  34
  35 #include "libofw.h"
  36 #include "openfirm.h"
  37
  38 static void             *heap_base = 0;
  39 static unsigned int     heap_size = 0;
  40
  41 struct ofw_mapping {
  42         vm_offset_t     va;
  43         int             len;
  44         vm_offset_t     pa;
  45         int             mode;
  46 };
  47
  48 void
  49 ofw_memmap(void)
  50 {
  51         phandle_t       mmup;
  52         int             nmapping, i;
  53         struct          ofw_mapping mappings[256];
  54
  55         mmup = OF_instance_to_package(mmu);
  56
  57         bzero(mappings, sizeof(mappings));
  58
  59         nmapping = OF_getprop(mmup, "translations", mappings, sizeof(mappings));
  60         if (nmapping == -1) {
  61                 printf("Could not get memory map (%d)\n",
  62                     nmapping);
  63                 return;
  64         }
  65         nmapping /= sizeof(struct ofw_mapping);
  66
  67         printf("%17s %17s %8s %6s\n", "Virtual Range", "Physical Range",
  68             "#Pages", "Mode");
  69
  70         for (i = 0; i < nmapping; i++) {
  71                 printf("%08x-%08x %08x-%08x %8d %6x\n", mappings[i].pa,
  72                     mappings[i].pa + mappings[i].len, mappings[i].va,
  73                     mappings[i].va + mappings[i].len, mappings[i].len / 0x1000,
  74                     mappings[i].mode);
  75         }
  76 }
  77
  78 void *
  79 ofw_alloc_heap(unsigned int size)
  80 {
  81         phandle_t       memoryp;
  82         struct          ofw_reg available;
  83         void            *base;
  84
  85         memoryp = OF_instance_to_package(memory);
  86         OF_getprop(memoryp, "available", &available, sizeof(available));
  87
  88         heap_base = OF_claim((void *)available.base, size, sizeof(register_t));
  89
  90         if (heap_base != (void *)-1) {
  91                 heap_size = size;
  92         }
  93
  94         return (heap_base);
  95 }
  96
  97 void
  98 ofw_release_heap(void)
  99 {
 100         OF_release(heap_base, heap_size);
 101 }