arch/mips/alchemy/db1x00/board_setup.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      Alchemy Db1x00 board setup.
   5  *
   6  * Copyright 2000, 2008 MontaVista Software Inc.
   7  * Author: MontaVista Software, Inc. <source@mvista.com>
   8  *
   9  *  This program is free software; you can redistribute  it and/or modify it
  10  *  under  the terms of  the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the  License, or (at your
  12  *  option) any later version.
  13  *
  14  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  15  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  16  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  17  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  18  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  20  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  21  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  22  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  *  You should have received a copy of the  GNU General Public License along
  26  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  27  *  675 Mass Ave, Cambridge, MA 02139, USA.
  28  */
  29
  30 #include <linux/init.h>
  31
  32 #include <asm/mach-au1x00/au1000.h>
  33 #include <asm/mach-db1x00/db1x00.h>
  34
  35 static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
  36
  37 void board_reset(void)
  38 {
  39         /* Hit BCSR.SW_RESET[RESET] */
  40         bcsr->swreset = 0x0000;
  41 }
  42
  43 void __init board_setup(void)
  44 {
  45         u32 pin_func = 0;
  46
  47         /* Not valid for Au1550 */
  48 #if defined(CONFIG_IRDA) && \
  49    (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
  50         /* Set IRFIRSEL instead of GPIO15 */
  51         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
  52         au_writel(pin_func, SYS_PINFUNC);
  53         /* Power off until the driver is in use */
  54         bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK;
  55         bcsr->resets |=  BCSR_RESETS_IRDA_MODE_OFF;
  56         au_sync();
  57 #endif
  58         bcsr->pcmcia = 0x0000; /* turn off PCMCIA power */
  59
  60 #ifdef CONFIG_MIPS_MIRAGE
  61         /* Enable GPIO[31:0] inputs */
  62         au_writel(0, SYS_PININPUTEN);
  63
  64         /* GPIO[20] is output, tristate the other input primary GPIOs */
  65         au_writel(~(1 << 20), SYS_TRIOUTCLR);
  66
  67         /* Set GPIO[210:208] instead of SSI_0 */
  68         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_S0;
  69
  70         /* Set GPIO[215:211] for LEDs */
  71         pin_func |= 5 << 2;
  72
  73         /* Set GPIO[214:213] for more LEDs */
  74         pin_func |= 5 << 12;
  75
  76         /* Set GPIO[207:200] instead of PCMCIA/LCD */
  77         pin_func |= SYS_PF_LCD | SYS_PF_PC;
  78         au_writel(pin_func, SYS_PINFUNC);
  79
  80         /*
  81          * Enable speaker amplifier.  This should
  82          * be part of the audio driver.
  83          */
  84         au_writel(au_readl(GPIO2_DIR) | 0x200, GPIO2_DIR);
  85         au_writel(0x02000200, GPIO2_OUTPUT);
  86 #endif
  87
  88         au_sync();
  89
  90 #ifdef CONFIG_MIPS_DB1000
  91         printk(KERN_INFO "AMD Alchemy Au1000/Db1000 Board\n");
  92 #endif
  93 #ifdef CONFIG_MIPS_DB1500
  94         printk(KERN_INFO "AMD Alchemy Au1500/Db1500 Board\n");
  95 #endif
  96 #ifdef CONFIG_MIPS_DB1100
  97         printk(KERN_INFO "AMD Alchemy Au1100/Db1100 Board\n");
  98 #endif
  99 #ifdef CONFIG_MIPS_BOSPORUS
 100         printk(KERN_INFO "AMD Alchemy Bosporus Board\n");
 101 #endif
 102 #ifdef CONFIG_MIPS_MIRAGE
 103         printk(KERN_INFO "AMD Alchemy Mirage Board\n");
 104 #endif
 105 #ifdef CONFIG_MIPS_DB1550
 106         printk(KERN_INFO "AMD Alchemy Au1550/Db1550 Board\n");
 107 #endif
 108 }