LXR linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927

   1/*
   2 * rbtx4927 specific prom routines
   3 *
   4 * Author: MontaVista Software, Inc.
   5 *         source@mvista.com
   6 *
   7 * Copyright 2001-2002 MontaVista Software Inc.
   8 *
   9 * Copyright (C) 2004 MontaVista Software Inc.
  10 * Author: Manish Lachwani, mlachwani@mvista.com
  11 *
  12 *  This program is free software; you can redistribute it and/or modify it
  13 *  under the terms of the GNU General Public License as published by the
  14 *  Free Software Foundation; either version 2 of the License, or (at your
  15 *  option) any later version.
  16 *
  17 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  18 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19 *  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,
  22 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  23 *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  25 *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  26 *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27 *
  28 *  You should have received a copy of the GNU General Public License along
  29 *  with this program; if not, write to the Free Software Foundation, Inc.,
  30 *  675 Mass Ave, Cambridge, MA 02139, USA.
  31 */
  32#include <linux/init.h>
  33#include <linux/mm.h>
  34#include <linux/sched.h>
  35#include <linux/bootmem.h>
  36
  37#include <asm/addrspace.h>
  38#include <asm/bootinfo.h>
  39#include <asm/cpu.h>
  40#include <asm/tx4927/tx4927.h>
  41
  42void __init prom_init_cmdline(void)
  43{
  44        int argc = (int) fw_arg0;
  45        char **argv = (char **) fw_arg1;
  46        int i;                  /* Always ignore the "-c" at argv[0] */
  47
  48        /* ignore all built-in args if any f/w args given */
  49        if (argc > 1) {
  50                *arcs_cmdline = '\0';
  51        }
  52
  53        for (i = 1; i < argc; i++) {
  54                if (i != 1) {
  55                        strcat(arcs_cmdline, " ");
  56                }
  57                strcat(arcs_cmdline, argv[i]);
  58        }
  59}
  60
  61void __init prom_init(void)
  62{
  63        extern int tx4927_get_mem_size(void);
  64        extern char* toshiba_name;
  65        int msize;
  66
  67        prom_init_cmdline();
  68
  69        if ((read_c0_prid() & 0xff) == PRID_REV_TX4927) {
  70                mips_machtype = MACH_TOSHIBA_RBTX4927;
  71                toshiba_name  = "TX4927";
  72        } else {
  73                mips_machtype = MACH_TOSHIBA_RBTX4937;
  74                toshiba_name  = "TX4937";
  75        }
  76
  77        msize = tx4927_get_mem_size();
  78        add_memory_region(0, msize << 20, BOOT_MEM_RAM);
  79}
  80
  81void __init prom_free_prom_memory(void)
  82{
  83}
  84
  85const char *get_system_type(void)
  86{
  87        return "Toshiba RBTX4927/RBTX4937";
  88}
  89
  90char * __init prom_getcmdline(void)
  91{
  92        return &(arcs_cmdline[0]);
  93}
  94
  95