release/src-rt-6.x/linux/linux-2.6/arch/powerpc/boot/treeboot-ebony.c

   1 /*
   2  * Old U-boot compatibility for Ebony
   3  *
   4  * Author: David Gibson <david@gibson.dropbear.id.au>
   5  *
   6  * Copyright 2007 David Gibson, IBM Corporatio.
   7  *   Based on cuboot-83xx.c, which is:
   8  * Copyright (c) 2007 Freescale Semiconductor, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published
  12  * by the Free Software Foundation.
  13  */
  14
  15 #include "ops.h"
  16 #include "stdio.h"
  17 #include "44x.h"
  18
  19 extern char _end[];
  20
  21 BSS_STACK(4096);
  22
  23 #define OPENBIOS_MAC_BASE       0xfffffe0c
  24 #define OPENBIOS_MAC_OFFSET     0xc
  25
  26 void platform_init(void)
  27 {
  28         unsigned long end_of_ram = 0x8000000;
  29         unsigned long avail_ram = end_of_ram - (unsigned long)_end;
  30
  31         simple_alloc_init(_end, avail_ram, 32, 64);
  32         ebony_init((u8 *)OPENBIOS_MAC_BASE,
  33                    (u8 *)(OPENBIOS_MAC_BASE + OPENBIOS_MAC_OFFSET));
  34 }