arch/mips/nxp/pnx833x/common/setup.c

   1 /*
   2  *  setup.c: Setup PNX833X Soc.
   3  *
   4  *  Copyright 2008 NXP Semiconductors
   5  *        Chris Steel <chris.steel@nxp.com>
   6  *    Daniel Laird <daniel.j.laird@nxp.com>
   7  *
   8  *  Based on software written by:
   9  *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25 #include <linux/init.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/ioport.h>
  28 #include <linux/io.h>
  29 #include <linux/pci.h>
  30 #include <asm/reboot.h>
  31 #include <pnx833x.h>
  32 #include <gpio.h>
  33
  34 extern void pnx833x_board_setup(void);
  35 extern void pnx833x_machine_restart(char *);
  36 extern void pnx833x_machine_halt(void);
  37 extern void pnx833x_machine_power_off(void);
  38
  39 int __init plat_mem_setup(void)
  40 {
  41         /* fake pci bus to avoid bounce buffers */
  42         PCI_DMA_BUS_IS_PHYS = 1;
  43
  44         /* set mips clock to 320MHz */
  45 #if defined(CONFIG_SOC_PNX8335)
  46         PNX8335_WRITEFIELD(0x17, CLOCK_PLL_CPU_CTL, FREQ);
  47 #endif
  48         pnx833x_gpio_init();    /* so it will be ready in board_setup() */
  49
  50         pnx833x_board_setup();
  51
  52         _machine_restart = pnx833x_machine_restart;
  53         _machine_halt = pnx833x_machine_halt;
  54         pm_power_off = pnx833x_machine_power_off;
  55
  56         /* IO/MEM resources. */
  57         set_io_port_base(KSEG1);
  58         ioport_resource.start = 0;
  59         ioport_resource.end = ~0;
  60         iomem_resource.start = 0;
  61         iomem_resource.end = ~0;
  62
  63         return 0;
  64 }