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/gpio.h>
  31 #include <linux/init.h>
  32
  33 #include <asm/mach-au1x00/au1000.h>
  34 #include <asm/mach-db1x00/db1x00.h>
  35
  36 #include <prom.h>
  37
  38
  39 static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
  40
  41 const char *get_system_type(void)
  42 {
  43 #ifdef CONFIG_MIPS_BOSPORUS
  44         return "Alchemy Bosporus Gateway Reference";
  45 #else
  46         return "Alchemy Db1x00";
  47 #endif
  48 }
  49
  50 void board_reset(void)
  51 {
  52         /* Hit BCSR.SW_RESET[RESET] */
  53         bcsr->swreset = 0x0000;
  54 }
  55
  56 void __init board_setup(void)
  57 {
  58         u32 pin_func = 0;
  59         char *argptr;
  60
  61         argptr = prom_getcmdline();
  62 #ifdef CONFIG_SERIAL_8250_CONSOLE
  63         argptr = strstr(argptr, "console=");
  64         if (argptr == NULL) {
  65                 argptr = prom_getcmdline();
  66                 strcat(argptr, " console=ttyS0,115200");
  67         }
  68 #endif
  69
  70 #ifdef CONFIG_FB_AU1100
  71         argptr = strstr(argptr, "video=");
  72         if (argptr == NULL) {
  73                 argptr = prom_getcmdline();
  74                 /* default panel */
  75                 /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
  76         }
  77 #endif
  78
  79 #if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
  80         /* au1000 does not support vra, au1500 and au1100 do */
  81         strcat(argptr, " au1000_audio=vra");
  82         argptr = prom_getcmdline();
  83 #endif
  84
  85         /* Not valid for Au1550 */
  86 #if defined(CONFIG_IRDA) && \
  87    (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
  88         /* Set IRFIRSEL instead of GPIO15 */
  89         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
  90         au_writel(pin_func, SYS_PINFUNC);
  91         /* Power off until the driver is in use */
  92         bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK;
  93         bcsr->resets |=  BCSR_RESETS_IRDA_MODE_OFF;
  94         au_sync();
  95 #endif
  96         bcsr->pcmcia = 0x0000; /* turn off PCMCIA power */
  97
  98         /* Enable GPIO[31:0] inputs */
  99         alchemy_gpio1_input_enable();
 100
 101 #ifdef CONFIG_MIPS_MIRAGE
 102         /* GPIO[20] is output */
 103         alchemy_gpio_direction_output(20, 0);
 104
 105         /* Set GPIO[210:208] instead of SSI_0 */
 106         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_S0;
 107
 108         /* Set GPIO[215:211] for LEDs */
 109         pin_func |= 5 << 2;
 110
 111         /* Set GPIO[214:213] for more LEDs */
 112         pin_func |= 5 << 12;
 113
 114         /* Set GPIO[207:200] instead of PCMCIA/LCD */
 115         pin_func |= SYS_PF_LCD | SYS_PF_PC;
 116         au_writel(pin_func, SYS_PINFUNC);
 117
 118         /*
 119          * Enable speaker amplifier.  This should
 120          * be part of the audio driver.
 121          */
 122         alchemy_gpio_direction_output(209, 1);
 123 #endif
 124
 125         au_sync();
 126
 127 #ifdef CONFIG_MIPS_DB1000
 128         printk(KERN_INFO "AMD Alchemy Au1000/Db1000 Board\n");
 129 #endif
 130 #ifdef CONFIG_MIPS_DB1500
 131         printk(KERN_INFO "AMD Alchemy Au1500/Db1500 Board\n");
 132 #endif
 133 #ifdef CONFIG_MIPS_DB1100
 134         printk(KERN_INFO "AMD Alchemy Au1100/Db1100 Board\n");
 135 #endif
 136 #ifdef CONFIG_MIPS_BOSPORUS
 137         printk(KERN_INFO "AMD Alchemy Bosporus Board\n");
 138 #endif
 139 #ifdef CONFIG_MIPS_MIRAGE
 140         printk(KERN_INFO "AMD Alchemy Mirage Board\n");
 141 #endif
 142 #ifdef CONFIG_MIPS_DB1550
 143         printk(KERN_INFO "AMD Alchemy Au1550/Db1550 Board\n");
 144 #endif
 145 }