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/kernel.h>
  21#include <linux/init.h>
  22#include <linux/types.h>
  23#include <linux/string.h>
  24#include <linux/mm.h>
  25#include <linux/io.h>
  26
  27#include <mach/hardware.h>
  28#include <asm/pgtable.h>
  29#include <asm/page.h>
  30#include <asm/setup.h>
  31#include <asm/sizes.h>
  32#include <asm/mach-types.h>
  33#include <asm/mach/arch.h>
  34#include <asm/mach/map.h>
  35#include <mach/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        {
  46                .virtual        = SYSPLD_VIRT_BASE,
  47                .pfn            = __phys_to_pfn(SYSPLD_PHYS_BASE),
  48                .length         = SZ_1M,
  49                .type           = MT_DEVICE
  50        }, {
  51                .virtual        = 0xfe400000,
  52                .pfn            = __phys_to_pfn(0x10400000),
  53                .length         = SZ_1M,
  54                .type           = MT_DEVICE
  55        }
  56};
  57
  58static void __init
  59fixup_p720t(struct machine_desc *desc, struct tag *tag,
  60            char **cmdline, struct meminfo *mi)
  61{
  62        /*
  63         * Our bootloader doesn't setup any tags (yet).
  64         */
  65        if (tag->hdr.tag != ATAG_CORE) {
  66                tag->hdr.tag = ATAG_CORE;
  67                tag->hdr.size = tag_size(tag_core);
  68                tag->u.core.flags = 0;
  69                tag->u.core.pagesize = PAGE_SIZE;
  70                tag->u.core.rootdev = 0x0100;
  71
  72                tag = tag_next(tag);
  73                tag->hdr.tag = ATAG_MEM;
  74                tag->hdr.size = tag_size(tag_mem32);
  75                tag->u.mem.size = 4096;
  76                tag->u.mem.start = PHYS_OFFSET;
  77
  78                tag = tag_next(tag);
  79                tag->hdr.tag = ATAG_NONE;
  80                tag->hdr.size = 0;
  81        }
  82}
  83
  84static void __init p720t_map_io(void)
  85{
  86        clps711x_map_io();
  87        iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
  88}
  89
  90MACHINE_START(P720T, "ARM-Prospector720T")
  91        /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
  92        .phys_io        = 0x80000000,
  93        .io_pg_offst    = ((0xff000000) >> 18) & 0xfffc,
  94        .boot_params    = 0xc0000100,
  95        .fixup          = fixup_p720t,
  96        .map_io         = p720t_map_io,
  97        .init_irq       = clps711x_init_irq,
  98        .timer          = &clps711x_timer,
  99MACHINE_END
 100
 101static int p720t_hw_init(void)
 102{
 103        /*
 104         * Power down as much as possible in case we don't
 105         * have the drivers loaded.
 106         */
 107        PLD_LCDEN = 0;
 108        PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
 109
 110        PLD_KBD   = 0;
 111        PLD_IO    = 0;
 112        PLD_IRDA  = 0;
 113        PLD_CODEC = 0;
 114        PLD_TCH   = 0;
 115        PLD_SPI   = 0;
 116#ifndef CONFIG_DEBUG_LL
 117        PLD_COM2  = 0;
 118        PLD_COM1  = 0;
 119#endif
 120
 121        return 0;
 122}
 123
 124__initcall(p720t_hw_init);
 125
 126