release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/alchemy/xxs1500/init.c

   1 /*
   2  * BRIEF MODULE DESCRIPTION
   3  *      XXS1500 board setup
   4  *
   5  * Copyright 2003, 2008 MontaVista Software Inc.
   6  * Author: MontaVista Software, Inc. <source@mvista.com>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  14  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  15  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  16  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  17  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  19  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  21  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  *  You should have received a copy of the  GNU General Public License along
  25  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  26  *  675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31
  32 #include <asm/bootinfo.h>
  33 #include <asm/mach-au1x00/au1000.h>
  34
  35 #include <prom.h>
  36
  37 const char *get_system_type(void)
  38 {
  39         return "XXS1500";
  40 }
  41
  42 void __init prom_init(void)
  43 {
  44         unsigned char *memsize_str;
  45         unsigned long memsize;
  46
  47         prom_argc = fw_arg0;
  48         prom_argv = (char **)fw_arg1;
  49         prom_envp = (char **)fw_arg2;
  50
  51         prom_init_cmdline();
  52
  53         memsize_str = prom_getenv("memsize");
  54         if (!memsize_str || strict_strtoul(memsize_str, 0, &memsize))
  55                 memsize = 0x04000000;
  56
  57         add_memory_region(0, memsize, BOOT_MEM_RAM);
  58 }
  59
  60 void prom_putchar(unsigned char c)
  61 {
  62         alchemy_uart_putchar(UART0_PHYS_ADDR, c);
  63 }