arch/mips/alchemy/devboards/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 const char *get_system_type(void)
  38 {
  39 #ifdef CONFIG_MIPS_BOSPORUS
  40         return "Alchemy Bosporus Gateway Reference";
  41 #else
  42         return "Alchemy Db1x00";
  43 #endif
  44 }
  45
  46 void board_reset(void)
  47 {
  48         /* Hit BCSR.SW_RESET[RESET] */
  49         bcsr->swreset = 0x0000;
  50 }
  51
  52 void __init board_setup(void)
  53 {
  54         u32 pin_func = 0;
  55
  56         /* Not valid for Au1550 */
  57 #if defined(CONFIG_IRDA) && \
  58    (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
  59         /* Set IRFIRSEL instead of GPIO15 */
  60         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
  61         au_writel(pin_func, SYS_PINFUNC);
  62         /* Power off until the driver is in use */
  63         bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK;
  64         bcsr->resets |=  BCSR_RESETS_IRDA_MODE_OFF;
  65         au_sync();
  66 #endif
  67         bcsr->pcmcia = 0x0000; /* turn off PCMCIA power */
  68
  69 #ifdef CONFIG_MIPS_MIRAGE
  70         /* Enable GPIO[31:0] inputs */
  71         au_writel(0, SYS_PININPUTEN);
  72
  73         /* GPIO[20] is output, tristate the other input primary GPIOs */
  74         au_writel(~(1 << 20), SYS_TRIOUTCLR);
  75
  76         /* Set GPIO[210:208] instead of SSI_0 */
  77         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_S0;
  78
  79         /* Set GPIO[215:211] for LEDs */
  80         pin_func |= 5 << 2;
  81
  82         /* Set GPIO[214:213] for more LEDs */
  83         pin_func |= 5 << 12;
  84
  85         /* Set GPIO[207:200] instead of PCMCIA/LCD */
  86         pin_func |= SYS_PF_LCD | SYS_PF_PC;
  87         au_writel(pin_func, SYS_PINFUNC);
  88
  89         /*
  90          * Enable speaker amplifier.  This should
  91          * be part of the audio driver.
  92          */
  93         au_writel(au_readl(GPIO2_DIR) | 0x200, GPIO2_DIR);
  94         au_writel(0x02000200, GPIO2_OUTPUT);
  95 #endif
  96
  97         au_sync();
  98
  99 #ifdef CONFIG_MIPS_DB1000
 100         printk(KERN_INFO "AMD Alchemy Au1000/Db1000 Board\n");
 101 #endif
 102 #ifdef CONFIG_MIPS_DB1500
 103         printk(KERN_INFO "AMD Alchemy Au1500/Db1500 Board\n");
 104 #endif
 105 #ifdef CONFIG_MIPS_DB1100
 106         printk(KERN_INFO "AMD Alchemy Au1100/Db1100 Board\n");
 107 #endif
 108 #ifdef CONFIG_MIPS_BOSPORUS
 109         printk(KERN_INFO "AMD Alchemy Bosporus Board\n");
 110 #endif
 111 #ifdef CONFIG_MIPS_MIRAGE
 112         printk(KERN_INFO "AMD Alchemy Mirage Board\n");
 113 #endif
 114 #ifdef CONFIG_MIPS_DB1550
 115         printk(KERN_INFO "AMD Alchemy Au1550/Db1550 Board\n");
 116 #endif
 117 }