arch/mips/alchemy/devboards/pb1550/board_setup.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      Alchemy Pb1550 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 #include <linux/interrupt.h>
  32
  33 #include <asm/mach-au1x00/au1000.h>
  34 #include <asm/mach-pb1x00/pb1550.h>
  35
  36 #include <prom.h>
  37
  38
  39 char irq_tab_alchemy[][5] __initdata = {
  40         [12] = { -1, INTB, INTC, INTD, INTA }, /* IDSEL 12 - PCI slot 2 (left)  */
  41         [13] = { -1, INTA, INTB, INTC, INTD }, /* IDSEL 13 - PCI slot 1 (right) */
  42 };
  43
  44 struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
  45         { AU1000_GPIO_0, IRQF_TRIGGER_LOW, 0 },
  46         { AU1000_GPIO_1, IRQF_TRIGGER_LOW, 0 },
  47 };
  48
  49 const char *get_system_type(void)
  50 {
  51         return "Alchemy Pb1550";
  52 }
  53
  54 void board_reset(void)
  55 {
  56         /* Hit BCSR.SYSTEM[RESET] */
  57         au_writew(au_readw(0xAF00001C) & ~BCSR_SYSTEM_RESET, 0xAF00001C);
  58 }
  59
  60 void __init board_init_irq(void)
  61 {
  62         au1xxx_setup_irqmap(au1xxx_irq_map, ARRAY_SIZE(au1xxx_irq_map));
  63 }
  64
  65 void __init board_setup(void)
  66 {
  67         u32 pin_func;
  68
  69 #ifdef CONFIG_SERIAL_8250_CONSOLE
  70         char *argptr;
  71         argptr = prom_getcmdline();
  72         argptr = strstr(argptr, "console=");
  73         if (argptr == NULL) {
  74                 argptr = prom_getcmdline();
  75                 strcat(argptr, " console=ttyS0,115200");
  76         }
  77 #endif
  78
  79         /*
  80          * Enable PSC1 SYNC for AC'97.  Normaly done in audio driver,
  81          * but it is board specific code, so put it here.
  82          */
  83         pin_func = au_readl(SYS_PINFUNC);
  84         au_sync();
  85         pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
  86         au_writel(pin_func, SYS_PINFUNC);
  87
  88         au_writel(0, (u32)bcsr | 0x10); /* turn off PCMCIA power */
  89         au_sync();
  90
  91         printk(KERN_INFO "AMD Alchemy Pb1550 Board\n");
  92 }