arch/mips/au1000/pb1550/board_setup.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      Alchemy Pb1550 board setup.
   5  *
   6  * Copyright 2000 MontaVista Software Inc.
   7  * Author: MontaVista Software, Inc.
   8  *              ppopov@mvista.com or source@mvista.com
   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 #include <linux/init.h>
  31 #include <linux/sched.h>
  32 #include <linux/ioport.h>
  33 #include <linux/mm.h>
  34 #include <linux/console.h>
  35 #include <linux/mc146818rtc.h>
  36 #include <linux/delay.h>
  37
  38 #include <asm/cpu.h>
  39 #include <asm/bootinfo.h>
  40 #include <asm/irq.h>
  41 #include <asm/mipsregs.h>
  42 #include <asm/reboot.h>
  43 #include <asm/pgtable.h>
  44 #include <asm/mach-au1x00/au1000.h>
  45 #include <asm/mach-pb1x00/pb1550.h>
  46
  47 void board_reset(void)
  48 {
  49     /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
  50         au_writew(au_readw(0xAF00001C) & ~(1<<15), 0xAF00001C);
  51 }
  52
  53 void __init board_setup(void)
  54 {
  55         u32 pin_func;
  56
  57         /* Enable PSC1 SYNC for AC97.  Normaly done in audio driver,
  58          * but it is board specific code, so put it here.
  59          */
  60         pin_func = au_readl(SYS_PINFUNC);
  61         au_sync();
  62         pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
  63         au_writel(pin_func, SYS_PINFUNC);
  64
  65         au_writel(0, (u32)bcsr|0x10); /* turn off pcmcia power */
  66         au_sync();
  67
  68         printk("AMD Alchemy Pb1550 Board\n");
  69 }