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
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  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 struct ofw_mapping2 {
  49         vm_offset_t     va;
  50         int             len;
  51         vm_offset_t     pa_hi;
  52         vm_offset_t     pa_lo;
  53         int             mode;
  54 };
  55
  56 void
  57 ofw_memmap(int acells)
  58 {
  59         struct          ofw_mapping *mapptr;
  60         struct          ofw_mapping2 *mapptr2;
  61         phandle_t       mmup;
  62         int             nmapping, i;
  63         u_char          mappings[256 * sizeof(struct ofw_mapping2)];
  64         char            lbuf[80];
  65
  66         mmup = OF_instance_to_package(mmu);
  67
  68         bzero(mappings, sizeof(mappings));
  69
  70         nmapping = OF_getprop(mmup, "translations", mappings, sizeof(mappings));
  71         if (nmapping == -1) {
  72                 printf("Could not get memory map (%d)\n",
  73                     nmapping);
  74                 return;
  75         }
  76
  77         pager_open();
  78         if (acells == 1) {
  79                 nmapping /= sizeof(struct ofw_mapping);
  80                 mapptr = (struct ofw_mapping *) mappings;
  81
  82                 printf("%17s\t%17s\t%8s\t%6s\n", "Virtual Range",
  83                     "Physical Range", "#Pages", "Mode");
  84
  85                 for (i = 0; i < nmapping; i++) {
  86                         sprintf(lbuf, "%08x-%08x\t%08x-%08x\t%8d\t%6x\n",
  87                                 mapptr[i].va,
  88                                 mapptr[i].va + mapptr[i].len,
  89                                 mapptr[i].pa,
  90                                 mapptr[i].pa + mapptr[i].len,
  91                                 mapptr[i].len / 0x1000,
  92                                 mapptr[i].mode);
  93                         if (pager_output(lbuf))
  94                                 break;
  95                 }
  96         } else {
  97                 nmapping /= sizeof(struct ofw_mapping2);
  98                 mapptr2 = (struct ofw_mapping2 *) mappings;
  99
 100                 printf("%17s\t%17s\t%8s\t%6s\n", "Virtual Range",
 101                        "Physical Range", "#Pages", "Mode");
 102
 103                 for (i = 0; i < nmapping; i++) {
 104                         sprintf(lbuf, "%08x-%08x\t%08x-%08x\t%8d\t%6x\n",
 105                                 mapptr2[i].va,
 106                                 mapptr2[i].va + mapptr2[i].len,
 107                                 mapptr2[i].pa_lo,
 108                                 mapptr2[i].pa_lo + mapptr2[i].len,
 109                                 mapptr2[i].len / 0x1000,
 110                                 mapptr2[i].mode);
 111                         if (pager_output(lbuf))
 112                                 break;
 113                 }
 114         }
 115         pager_close();
 116 }
 117
 118 void *
 119 ofw_alloc_heap(unsigned int size)
 120 {
 121         phandle_t       memoryp, root;
 122         cell_t          available[4];
 123         cell_t          acells;
 124
 125         root = OF_finddevice("/");
 126         acells = 1;
 127         OF_getprop(root, "#address-cells", &acells, sizeof(acells));
 128
 129         memoryp = OF_instance_to_package(memory);
 130         OF_getprop(memoryp, "available", available, sizeof(available));
 131
 132         heap_base = OF_claim((void *)available[acells-1], size,
 133             sizeof(register_t));
 134
 135         if (heap_base != (void *)-1) {
 136                 heap_size = size;
 137         }
 138
 139         return (heap_base);
 140 }
 141
 142 void
 143 ofw_release_heap(void)
 144 {
 145         OF_release(heap_base, heap_size);
 146 }