arch/mips/au1000/db1x00/board_setup.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      Alchemy Db1x00 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-db1x00/db1x00.h>
  46
  47 static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
  48
  49 void board_reset(void)
  50 {
  51         /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
  52         bcsr->swreset = 0x0000;
  53 }
  54
  55 void __init board_setup(void)
  56 {
  57         u32 pin_func;
  58
  59         pin_func = 0;
  60         /* not valid for 1550 */
  61
  62 #if defined(CONFIG_IRDA) && (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
  63         /* set IRFIRSEL instead of GPIO15 */
  64         pin_func = au_readl(SYS_PINFUNC) | (u32)((1<<8));
  65         au_writel(pin_func, SYS_PINFUNC);
  66         /* power off until the driver is in use */
  67         bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK;
  68         bcsr->resets |= BCSR_RESETS_IRDA_MODE_OFF;
  69         au_sync();
  70 #endif
  71         bcsr->pcmcia = 0x0000; /* turn off PCMCIA power */
  72
  73 #ifdef CONFIG_MIPS_MIRAGE
  74         /* enable GPIO[31:0] inputs */
  75         au_writel(0, SYS_PININPUTEN);
  76
  77         /* GPIO[20] is output, tristate the other input primary GPIO's */
  78         au_writel((u32)(~(1<<20)), SYS_TRIOUTCLR);
  79
  80         /* set GPIO[210:208] instead of SSI_0 */
  81         pin_func = au_readl(SYS_PINFUNC) | (u32)(1);
  82
  83         /* set GPIO[215:211] for LED's */
  84         pin_func |= (u32)((5<<2));
  85
  86         /* set GPIO[214:213] for more LED's */
  87         pin_func |= (u32)((5<<12));
  88
  89         /* set GPIO[207:200] instead of PCMCIA/LCD */
  90         pin_func |= (u32)((3<<17));
  91         au_writel(pin_func, SYS_PINFUNC);
  92
  93         /* Enable speaker amplifier.  This should
  94          * be part of the audio driver.
  95          */
  96         au_writel(au_readl(GPIO2_DIR) | 0x200, GPIO2_DIR);
  97         au_writel(0x02000200, GPIO2_OUTPUT);
  98 #endif
  99
 100         au_sync();
 101
 102 #ifdef CONFIG_MIPS_DB1000
 103     printk("AMD Alchemy Au1000/Db1000 Board\n");
 104 #endif
 105 #ifdef CONFIG_MIPS_DB1500
 106     printk("AMD Alchemy Au1500/Db1500 Board\n");
 107 #endif
 108 #ifdef CONFIG_MIPS_DB1100
 109     printk("AMD Alchemy Au1100/Db1100 Board\n");
 110 #endif
 111 #ifdef CONFIG_MIPS_BOSPORUS
 112     printk("AMD Alchemy Bosporus Board\n");
 113 #endif
 114 #ifdef CONFIG_MIPS_MIRAGE
 115     printk("AMD Alchemy Mirage Board\n");
 116 #endif
 117 #ifdef CONFIG_MIPS_DB1550
 118     printk("AMD Alchemy Au1550/Db1550 Board\n");
 119 #endif
 120 }