arch/mips/alchemy/mtx-1/init.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      4G Systems MTX-1 board setup
   5  *
   6  * Copyright 2003, 2008 MontaVista Software Inc.
   7  * Author: MontaVista Software, Inc. <source@mvista.com>
   8  *         Bruno Randolf <bruno.randolf@4g-systems.biz>
   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 as published by the
  12  *  Free Software Foundation;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  *
  15  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  16  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  17  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  18  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  19  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  21  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  22  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  23  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  *  You should have received a copy of the  GNU General Public License along
  27  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  28  *  675 Mass Ave, Cambridge, MA 02139, USA.
  29  */
  30
  31 #include <linux/kernel.h>
  32 #include <linux/init.h>
  33
  34 #include <asm/bootinfo.h>
  35 #include <asm/mach-au1x00/au1000.h>
  36
  37 #include <prom.h>
  38
  39 const char *get_system_type(void)
  40 {
  41         return "MTX-1";
  42 }
  43
  44 void __init prom_init(void)
  45 {
  46         unsigned char *memsize_str;
  47         unsigned long memsize;
  48
  49         prom_argc = fw_arg0;
  50         prom_argv = (char **)fw_arg1;
  51         prom_envp = (char **)fw_arg2;
  52
  53         prom_init_cmdline();
  54
  55         memsize_str = prom_getenv("memsize");
  56         if (!memsize_str)
  57                 memsize = 0x04000000;
  58         else
  59                 strict_strtoul(memsize_str, 0, &memsize);
  60         add_memory_region(0, memsize, BOOT_MEM_RAM);
  61 }
  62
  63 void prom_putchar(unsigned char c)
  64 {
  65         alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
  66 }