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  */
  44 static 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
  49 static void __init
  50 fixup_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
  75 static void __init p720t_map_io(void)
  76 {
  77         clps711x_map_io();
  78         iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
  79 }
  80
  81 MACHINE_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,
  89 MACHINE_END
  90
  91 static 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