LXR linux/arch/arm/mach-clps711x/p720t.c

   1/*
   2 *  linux/arch/arm/mach-clps711x/p720t.c
   3 *
   4 *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20#include <linux/config.h>
  21#include <linux/kernel.h>
  22#include <linux/init.h>
  23#include <linux/types.h>
  24#include <linux/string.h>
  25#include <linux/mm.h>
  26
  27#include <asm/hardware.h>
  28#include <asm/io.h>
  29#include <asm/pgtable.h>
  30#include <asm/page.h>
  31#include <asm/setup.h>
  32#include <asm/mach-types.h>
  33#include <asm/mach/arch.h>
  34#include <asm/mach/map.h>
  35#include <asm/arch/syspld.h>
  36
  37#include "common.h"
  38
  39/*
  40 * Map the P720T system PLD.  It occupies two address spaces:
  41 *  SYSPLD_PHYS_BASE and SYSPLD_PHYS_BASE + 0x00400000
  42 * We map both here.
  43 */
  44static struct map_desc p720t_io_desc[] __initdata = {
  45        { SYSPLD_VIRT_BASE,     SYSPLD_PHYS_BASE, 1048576, MT_DEVICE },
  46        { 0xfe400000,           0x10400000,       1048576, MT_DEVICE }
  47};
  48
  49static void __init
  50fixup_p720t(struct machine_desc *desc, struct tag *tag,
  51            char **cmdline, struct meminfo *mi)
  52{
  53        /*
  54         * Our bootloader doesn't setup any tags (yet).
  55         */
  56        if (tag->hdr.tag != ATAG_CORE) {
  57                tag->hdr.tag = ATAG_CORE;
  58                tag->hdr.size = tag_size(tag_core);
  59                tag->u.core.flags = 0;
  60                tag->u.core.pagesize = PAGE_SIZE;
  61                tag->u.core.rootdev = 0x0100;
  62
  63                tag = tag_next(tag);
  64                tag->hdr.tag = ATAG_MEM;
  65                tag->hdr.size = tag_size(tag_mem32);
  66                tag->u.mem.size = 4096;
  67                tag->u.mem.start = PHYS_OFFSET;
  68
  69                tag = tag_next(tag);
  70                tag->hdr.tag = ATAG_NONE;
  71                tag->hdr.size = 0;
  72        }
  73}
  74
  75static void __init p720t_map_io(void)
  76{
  77        clps711x_map_io();
  78        iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
  79}
  80
  81MACHINE_START(P720T, "ARM-Prospector720T")
  82        MAINTAINER("ARM Ltd/Deep Blue Solutions Ltd")
  83        BOOT_MEM(0xc0000000, 0x80000000, 0xff000000)
  84        BOOT_PARAMS(0xc0000100)
  85        FIXUP(fixup_p720t)
  86        MAPIO(p720t_map_io)
  87        INITIRQ(clps711x_init_irq)
  88        .timer          = &clps711x_timer,
  89MACHINE_END
  90
  91static int p720t_hw_init(void)
  92{
  93        /*
  94         * Power down as much as possible in case we don't
  95         * have the drivers loaded.
  96         */
  97        PLD_LCDEN = 0;
  98        PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
  99
 100        PLD_KBD   = 0;
 101        PLD_IO    = 0;
 102        PLD_IRDA  = 0;
 103        PLD_CODEC = 0;
 104        PLD_TCH   = 0;
 105        PLD_SPI   = 0;
 106#ifndef CONFIG_DEBUG_LL
 107        PLD_COM2  = 0;
 108        PLD_COM1  = 0;
 109#endif
 110
 111        return 0;
 112}
 113
 114__initcall(p720t_hw_init);
 115
 116