arch/mips/au1000/xxs1500/board_setup.c

   1 /*
   2  * Copyright 2000-2003, 2008 MontaVista Software Inc.
   3  * Author: MontaVista Software, Inc. <source@mvista.com>
   4  *
   5  *  This program is free software; you can redistribute  it and/or modify it
   6  *  under  the terms of  the GNU General  Public License as published by the
   7  *  Free Software Foundation;  either version 2 of the  License, or (at your
   8  *  option) any later version.
   9  *
  10  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  11  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  12  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  13  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  14  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  15  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  16  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  17  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  18  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  19  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  20  *
  21  *  You should have received a copy of the  GNU General Public License along
  22  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  23  *  675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #include <linux/init.h>
  27 #include <linux/delay.h>
  28
  29 #include <asm/mach-au1x00/au1000.h>
  30
  31 void board_reset(void)
  32 {
  33         /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
  34         au_writel(0x00000000, 0xAE00001C);
  35 }
  36
  37 void __init board_setup(void)
  38 {
  39         u32 pin_func;
  40
  41         /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
  42         pin_func  = au_readl(SYS_PINFUNC) & ~SYS_PF_UR3;
  43         pin_func |= SYS_PF_UR3;
  44         au_writel(pin_func, SYS_PINFUNC);
  45
  46         /* Enable UART */
  47         au_writel(0x01, UART3_ADDR + UART_MOD_CNTRL); /* clock enable (CE) */
  48         mdelay(10);
  49         au_writel(0x03, UART3_ADDR + UART_MOD_CNTRL); /* CE and "enable" */
  50         mdelay(10);
  51
  52         /* Enable DTR = USB power up */
  53         au_writel(0x01, UART3_ADDR + UART_MCR); /* UART_MCR_DTR is 0x01??? */
  54
  55 #ifdef CONFIG_PCMCIA_XXS1500
  56         /* Setup PCMCIA signals */
  57         au_writel(0, SYS_PININPUTEN);
  58
  59         /* GPIO 0, 1, and 4 are inputs */
  60         au_writel(1 | (1 << 1) | (1 << 4), SYS_TRIOUTCLR);
  61
  62         /* Enable GPIO2 if not already enabled */
  63         au_writel(1, GPIO2_ENABLE);
  64         /* GPIO2 208/9/10/11 are inputs */
  65         au_writel((1 << 8) | (1 << 9) | (1 << 10) | (1 << 11), GPIO2_DIR);
  66
  67         /* Turn off power */
  68         au_writel((au_readl(GPIO2_PINSTATE) & ~(1 << 14)) | (1 << 30),
  69                   GPIO2_OUTPUT);
  70 #endif
  71
  72 #ifdef CONFIG_PCI
  73 #if defined(__MIPSEB__)
  74         au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
  75 #else
  76         au_writel(0xf, Au1500_PCI_CFG);
  77 #endif
  78 #endif
  79 }