release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/txx9/jmr3927/prom.c

   1 /*
   2  * BRIEF MODULE DESCRIPTION
   3  *    PROM library initialisation code, assuming a version of
   4  *    pmon is the boot code.
   5  *
   6  * Copyright 2001 MontaVista Software Inc.
   7  * Author: MontaVista Software, Inc.
   8  *              ahennessy@mvista.com
   9  *
  10  * Based on arch/mips/au1000/common/prom.c
  11  *
  12  * This file was derived from Carsten Langgaard's
  13  * arch/mips/mips-boards/xx files.
  14  *
  15  * Carsten Langgaard, carstenl@mips.com
  16  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
  17  *
  18  *  This program is free software; you can redistribute  it and/or modify it
  19  *  under  the terms of  the GNU General  Public License as published by the
  20  *  Free Software Foundation;  either version 2 of the  License, or (at your
  21  *  option) any later version.
  22  *
  23  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  24  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  25  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  26  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  27  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  29  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  30  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  31  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  *  You should have received a copy of the  GNU General Public License along
  35  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  36  *  675 Mass Ave, Cambridge, MA 02139, USA.
  37  */
  38 #include <linux/init.h>
  39 #include <linux/kernel.h>
  40 #include <asm/bootinfo.h>
  41 #include <asm/txx9/generic.h>
  42 #include <asm/txx9/jmr3927.h>
  43
  44 void __init jmr3927_prom_init(void)
  45 {
  46         /* CCFG */
  47         if ((tx3927_ccfgptr->ccfg & TX3927_CCFG_TLBOFF) == 0)
  48                 printk(KERN_ERR "TX3927 TLB off\n");
  49
  50         add_memory_region(0, JMR3927_SDRAM_SIZE, BOOT_MEM_RAM);
  51         txx9_sio_putchar_init(TX3927_SIO_REG(1));
  52 }