arch/arm/mach-ep93xx/ts72xx.c

   1 /*
   2  * arch/arm/mach-ep93xx/ts72xx.c
   3  * Technologic Systems TS72xx SBC support.
   4  *
   5  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or (at
  10  * your option) any later version.
  11  */
  12
  13 #include <linux/config.h>
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/mm.h>
  17 #include <linux/sched.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <asm/io.h>
  21 #include <asm/hardware.h>
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/map.h>
  25
  26 static struct map_desc ts72xx_io_desc[] __initdata = {
  27         {
  28                 .virtual        = TS72XX_MODEL_VIRT_BASE,
  29                 .pfn            = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
  30                 .length         = TS72XX_MODEL_SIZE,
  31                 .type           = MT_DEVICE,
  32         }, {
  33                 .virtual        = TS72XX_OPTIONS_VIRT_BASE,
  34                 .pfn            = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
  35                 .length         = TS72XX_OPTIONS_SIZE,
  36                 .type           = MT_DEVICE,
  37         }, {
  38                 .virtual        = TS72XX_OPTIONS2_VIRT_BASE,
  39                 .pfn            = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
  40                 .length         = TS72XX_OPTIONS2_SIZE,
  41                 .type           = MT_DEVICE,
  42         }
  43 };
  44
  45 static struct map_desc ts72xx_nand_io_desc[] __initdata = {
  46         {
  47                 .virtual        = TS72XX_NAND_DATA_VIRT_BASE,
  48                 .pfn            = __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
  49                 .length         = TS72XX_NAND_DATA_SIZE,
  50                 .type           = MT_DEVICE,
  51         }, {
  52                 .virtual        = TS72XX_NAND_CONTROL_VIRT_BASE,
  53                 .pfn            = __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
  54                 .length         = TS72XX_NAND_CONTROL_SIZE,
  55                 .type           = MT_DEVICE,
  56         }, {
  57                 .virtual        = TS72XX_NAND_BUSY_VIRT_BASE,
  58                 .pfn            = __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
  59                 .length         = TS72XX_NAND_BUSY_SIZE,
  60                 .type           = MT_DEVICE,
  61         }
  62 };
  63
  64 static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
  65         {
  66                 .virtual        = TS72XX_NAND_DATA_VIRT_BASE,
  67                 .pfn            = __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
  68                 .length         = TS72XX_NAND_DATA_SIZE,
  69                 .type           = MT_DEVICE,
  70         }, {
  71                 .virtual        = TS72XX_NAND_CONTROL_VIRT_BASE,
  72                 .pfn            = __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
  73                 .length         = TS72XX_NAND_CONTROL_SIZE,
  74                 .type           = MT_DEVICE,
  75         }, {
  76                 .virtual        = TS72XX_NAND_BUSY_VIRT_BASE,
  77                 .pfn            = __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
  78                 .length         = TS72XX_NAND_BUSY_SIZE,
  79                 .type           = MT_DEVICE,
  80         }
  81 };
  82
  83 static void __init ts72xx_map_io(void)
  84 {
  85         ep93xx_map_io();
  86         iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
  87
  88         /*
  89          * The TS-7200 has NOR flash, the other models have NAND flash.
  90          */
  91         if (!board_is_ts7200()) {
  92                 if (is_ts9420_installed()) {
  93                         iotable_init(ts72xx_alternate_nand_io_desc,
  94                                 ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
  95                 } else {
  96                         iotable_init(ts72xx_nand_io_desc,
  97                                 ARRAY_SIZE(ts72xx_nand_io_desc));
  98                 }
  99         }
 100 }
 101
 102 static void __init ts72xx_init_machine(void)
 103 {
 104         ep93xx_init_devices();
 105         if (board_is_ts7200())
 106                 physmap_configure(TS72XX_NOR_PHYS_BASE, 0x01000000, 1, NULL);
 107 }
 108
 109 MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
 110         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 111         .phys_io        = EP93XX_APB_PHYS_BASE,
 112         .io_pg_offst    = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
 113         .boot_params    = 0x00000100,
 114         .map_io         = ts72xx_map_io,
 115         .init_irq       = ep93xx_init_irq,
 116         .timer          = &ep93xx_timer,
 117         .init_machine   = ts72xx_init_machine,
 118 MACHINE_END