arch/powerpc/boot/cuboot.c

   1 /*
   2  * Compatibility for old (not device tree aware) U-Boot versions
   3  *
   4  * Author: Scott Wood <scottwood@freescale.com>
   5  * Consolidated using macros by David Gibson <david@gibson.dropbear.id.au>
   6  *
   7  * Copyright 2007 David Gibson, IBM Corporation.
   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
  18 #include "ppcboot.h"
  19
  20 void cuboot_init(unsigned long r4, unsigned long r5,
  21                  unsigned long r6, unsigned long r7,
  22                  unsigned long end_of_ram)
  23 {
  24         unsigned long avail_ram = end_of_ram - (unsigned long)_end;
  25
  26         loader_info.initrd_addr = r4;
  27         loader_info.initrd_size = r4 ? r5 - r4 : 0;
  28         loader_info.cmdline = (char *)r6;
  29         loader_info.cmdline_len = r7 - r6;
  30
  31         simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64);
  32 }