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toshiba_rbtx4927_prom.c

/*
 * rbtx4927 specific prom routines
 *
 * Author: MontaVista Software, Inc.
 *         source@mvista.com
 *
 * Copyright 2001-2002 MontaVista Software Inc.
 *
 * Copyright (C) 2004 MontaVista Software Inc.
 * Author: Manish Lachwani, mlachwani@mvista.com
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>

#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/tx4927/tx4927.h>

void __init prom_init_cmdline(void)
{
      int argc = (int) fw_arg0;
      char **argv = (char **) fw_arg1;
      int i;                  /* Always ignore the "-c" at argv[0] */

      /* ignore all built-in args if any f/w args given */
      if (argc > 1) {
            *arcs_cmdline = '\0';
      }

      for (i = 1; i < argc; i++) {
            if (i != 1) {
                  strcat(arcs_cmdline, " ");
            }
            strcat(arcs_cmdline, argv[i]);
      }
}

void __init prom_init(void)
{
      extern int tx4927_get_mem_size(void);
      extern char* toshiba_name;
      int msize;

      prom_init_cmdline();

      if ((read_c0_prid() & 0xff) == PRID_REV_TX4927) {
            mips_machtype = MACH_TOSHIBA_RBTX4927;
            toshiba_name  = "TX4927";
      } else {
            mips_machtype = MACH_TOSHIBA_RBTX4937;
            toshiba_name  = "TX4937";
      }

      msize = tx4927_get_mem_size();
      add_memory_region(0, msize << 20, BOOT_MEM_RAM);
}

void __init prom_free_prom_memory(void)
{
}

const char *get_system_type(void)
{
      return "Toshiba RBTX4927/RBTX4937";
}

char * __init prom_getcmdline(void)
{
        return &(arcs_cmdline[0]);
}


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