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  1. /*
  2.  * Copyright (c) 2006 Jakub Jermar
  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.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef BOOT_BALLOC_H_
  30. #define BOOT_BALLOC_H_
  31.  
  32. #include <types.h>
  33.  
  34. /*
  35.  * SmartFirmware unfortunatelly fails to claim physical memory
  36.  * for the boot allocator if the requested memory is too big
  37.  * (roughly 512 kB and more). SmartFirmware runs on machines
  38.  * containing newer versions of UltraSPARC processors. It
  39.  * has been observed that the OFW tree is small enough for these
  40.  * machines so that it can fit into 256 kB. This is a workaround how
  41.  * to get rid of the memory claiming failure.
  42.  */
  43. #if defined (SMART_FIRMWARE)
  44.     #define BALLOC_MAX_SIZE     (256 * 1024)
  45. #else
  46.     #define BALLOC_MAX_SIZE     (1024 * 1024)
  47. #endif
  48.  
  49. typedef struct {
  50.     uintptr_t base;
  51.     size_t size;
  52. } ballocs_t;
  53.  
  54. extern void balloc_init(ballocs_t *b, uintptr_t base);
  55. extern void *balloc(size_t size, size_t alignment);
  56.  
  57. #endif
  58.