kernel/2.6.29.6-aldebaran-rt/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 #include <prom.h>
  36
  37
  38 static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
  39
  40 const char *get_system_type(void)
  41 {
  42 #ifdef CONFIG_MIPS_BOSPORUS
  43         return "Alchemy Bosporus Gateway Reference";
  44 #else
  45         return "Alchemy Db1x00";
  46 #endif
  47 }
  48
  49 void board_reset(void)
  50 {
  51         /* Hit BCSR.SW_RESET[RESET] */
  52         bcsr->swreset = 0x0000;
  53 }
  54
  55 void __init board_setup(void)
  56 {
  57         u32 pin_func = 0;
  58         char *argptr;
  59
  60         argptr = prom_getcmdline();
  61 #ifdef CONFIG_SERIAL_8250_CONSOLE
  62         argptr = strstr(argptr, "console=");
  63         if (argptr == NULL) {
  64                 argptr = prom_getcmdline();
  65                 strcat(argptr, " console=ttyS0,115200");
  66         }
  67 #endif
  68
  69 #ifdef CONFIG_FB_AU1100
  70         argptr = strstr(argptr, "video=");
  71         if (argptr == NULL) {
  72                 argptr = prom_getcmdline();
  73                 /* default panel */
  74                 /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
  75         }
  76 #endif
  77
  78 #if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
  79         /* au1000 does not support vra, au1500 and au1100 do */
  80         strcat(argptr, " au1000_audio=vra");
  81         argptr = prom_getcmdline();
  82 #endif
  83
  84         /* Not valid for Au1550 */
  85 #if defined(CONFIG_IRDA) && \
  86    (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
  87         /* Set IRFIRSEL instead of GPIO15 */
  88         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
  89         au_writel(pin_func, SYS_PINFUNC);
  90         /* Power off until the driver is in use */
  91         bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK;
  92         bcsr->resets |=  BCSR_RESETS_IRDA_MODE_OFF;
  93         au_sync();
  94 #endif
  95         bcsr->pcmcia = 0x0000; /* turn off PCMCIA power */
  96
  97 #ifdef CONFIG_MIPS_MIRAGE
  98         /* Enable GPIO[31:0] inputs */
  99         au_writel(0, SYS_PININPUTEN);
 100
 101         /* GPIO[20] is output, tristate the other input primary GPIOs */
 102         au_writel(~(1 << 20), SYS_TRIOUTCLR);
 103
 104         /* Set GPIO[210:208] instead of SSI_0 */
 105         pin_func = au_readl(SYS_PINFUNC) | SYS_PF_S0;
 106
 107         /* Set GPIO[215:211] for LEDs */
 108         pin_func |= 5 << 2;
 109
 110         /* Set GPIO[214:213] for more LEDs */
 111         pin_func |= 5 << 12;
 112
 113         /* Set GPIO[207:200] instead of PCMCIA/LCD */
 114         pin_func |= SYS_PF_LCD | SYS_PF_PC;
 115         au_writel(pin_func, SYS_PINFUNC);
 116
 117         /*
 118          * Enable speaker amplifier.  This should
 119          * be part of the audio driver.
 120          */
 121         au_writel(au_readl(GPIO2_DIR) | 0x200, GPIO2_DIR);
 122         au_writel(0x02000200, GPIO2_OUTPUT);
 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 }