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/sizes.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/arch/syspld.h>
  37
  38 #include "common.h"
  39
  40 /*
  41  * Map the P720T system PLD.  It occupies two address spaces:
  42  *  SYSPLD_PHYS_BASE and SYSPLD_PHYS_BASE + 0x00400000
  43  * We map both here.
  44  */
  45 static struct map_desc p720t_io_desc[] __initdata = {
  46         {
  47                 .virtual        = SYSPLD_VIRT_BASE,
  48                 .pfn            = __phys_to_pfn(SYSPLD_PHYS_BASE),
  49                 .length         = SZ_1M,
  50                 .type           = MT_DEVICE
  51         }, {
  52                 .virtual        = 0xfe400000,
  53                 .pfn            = __phys_to_pfn(0x10400000),
  54                 .length         = SZ_1M,
  55                 .type           = MT_DEVICE
  56         }
  57 };
  58
  59 static void __init
  60 fixup_p720t(struct machine_desc *desc, struct tag *tag,
  61             char **cmdline, struct meminfo *mi)
  62 {
  63         /*
  64          * Our bootloader doesn't setup any tags (yet).
  65          */
  66         if (tag->hdr.tag != ATAG_CORE) {
  67                 tag->hdr.tag = ATAG_CORE;
  68                 tag->hdr.size = tag_size(tag_core);
  69                 tag->u.core.flags = 0;
  70                 tag->u.core.pagesize = PAGE_SIZE;
  71                 tag->u.core.rootdev = 0x0100;
  72
  73                 tag = tag_next(tag);
  74                 tag->hdr.tag = ATAG_MEM;
  75                 tag->hdr.size = tag_size(tag_mem32);
  76                 tag->u.mem.size = 4096;
  77                 tag->u.mem.start = PHYS_OFFSET;
  78
  79                 tag = tag_next(tag);
  80                 tag->hdr.tag = ATAG_NONE;
  81                 tag->hdr.size = 0;
  82         }
  83 }
  84
  85 static void __init p720t_map_io(void)
  86 {
  87         clps711x_map_io();
  88         iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
  89 }
  90
  91 MACHINE_START(P720T, "ARM-Prospector720T")
  92         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
  93         .phys_ram       = 0xc0000000,
  94         .phys_io        = 0x80000000,
  95         .io_pg_offst    = ((0xff000000) >> 18) & 0xfffc,
  96         .boot_params    = 0xc0000100,
  97         .fixup          = fixup_p720t,
  98         .map_io         = p720t_map_io,
  99         .init_irq       = clps711x_init_irq,
 100         .timer          = &clps711x_timer,
 101 MACHINE_END
 102
 103 static int p720t_hw_init(void)
 104 {
 105         /*
 106          * Power down as much as possible in case we don't
 107          * have the drivers loaded.
 108          */
 109         PLD_LCDEN = 0;
 110         PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
 111
 112         PLD_KBD   = 0;
 113         PLD_IO    = 0;
 114         PLD_IRDA  = 0;
 115         PLD_CODEC = 0;
 116         PLD_TCH   = 0;
 117         PLD_SPI   = 0;
 118 #ifndef CONFIG_DEBUG_LL
 119         PLD_COM2  = 0;
 120         PLD_COM1  = 0;
 121 #endif
 122
 123         return 0;
 124 }
 125
 126 __initcall(p720t_hw_init);
 127