i386/libsaio/memory.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 2003 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 2.0 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24
  25 #include "sl.h"
  26 #include "saio_internal.h"
  27 #include "bootstruct.h"
  28 #include "device_tree.h"
  29
  30 static long  gImageLastKernelAddr;
  31
  32 #define kPageSize     4096
  33 #define RoundPage(x)  ((((unsigned)(x)) + kPageSize - 1) & ~(kPageSize - 1))
  34
  35
  36 long
  37 AllocateMemoryRange(char * rangeName, long start, long length, long type)
  38 {
  39     char *nameBuf;
  40     uint32_t *buffer;
  41
  42     nameBuf = malloc(strlen(rangeName) + 1);
  43     if (nameBuf == 0) return -1;
  44     strcpy(nameBuf, rangeName);
  45
  46     buffer = malloc(2 * sizeof(uint32_t));
  47     if (buffer == 0) return -1;
  48
  49     buffer[0] = start;
  50     buffer[1] = length;
  51
  52     DT__AddProperty(gMemoryMapNode, nameBuf, 2 * sizeof(uint32_t), (char *)buffer);
  53
  54     return 0;
  55 }
  56
  57 #if 0
  58 long
  59 AllocateMemoryRange(char * rangeName, long start, long length, long type)
  60 {
  61     if ( bootArgs->numBootDrivers < NDRIVERS )
  62     {
  63         int num = bootArgs->numBootDrivers;
  64
  65         bootArgs->driverConfig[num].address = start;
  66         bootArgs->driverConfig[num].size    = length;
  67         bootArgs->driverConfig[num].type    = type;
  68         bootArgs->numBootDrivers++;
  69     }
  70     else
  71     {
  72         stop( "AllocateMemoryRange error" );
  73     }
  74     return 0;
  75 }
  76 #endif
  77
  78 long
  79 AllocateKernelMemory( long inSize )
  80 {
  81     long addr;
  82
  83     if (gImageLastKernelAddr == 0) {
  84         gImageLastKernelAddr = RoundPage( bootArgs->kaddr +
  85                                           bootArgs->ksize );
  86     }
  87     addr = gImageLastKernelAddr;
  88     gImageLastKernelAddr += RoundPage(inSize);
  89
  90     if ( gImageLastKernelAddr >= (KERNEL_ADDR + KERNEL_LEN) ) {
  91         stop ("AllocateKernelMemory error");
  92     }
  93
  94     bootArgs->ksize = gImageLastKernelAddr - bootArgs->kaddr;
  95
  96     return addr;
  97 }