arch/arm/mach-ep93xx/micro9.c

   1 /*
   2  *  linux/arch/arm/mach-ep93xx/micro9.c
   3  *
   4  * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
   5  *                    Manfred Gruber <m.gruber@tirol.com>
   6  * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
   7  *                    Hubert Feurstein <hubert.feurstein@contec.at>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/mtd/physmap.h>
  18
  19 #include <mach/hardware.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23
  24
  25 /*************************************************************************
  26  * Micro9 NOR Flash
  27  *
  28  * Micro9-High has up to 64MB of 32-bit flash on CS1
  29  * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
  30  * Micro9-Lite uses a seperate MTD map driver for flash support
  31  * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
  32  *************************************************************************/
  33 static struct physmap_flash_data micro9_flash_data;
  34
  35 static struct resource micro9_flash_resource = {
  36         .start          = EP93XX_CS1_PHYS_BASE,
  37         .end            = EP93XX_CS1_PHYS_BASE + SZ_64M - 1,
  38         .flags          = IORESOURCE_MEM,
  39 };
  40
  41 static struct platform_device micro9_flash = {
  42         .name           = "physmap-flash",
  43         .id             = 0,
  44         .dev            = {
  45                 .platform_data  = &micro9_flash_data,
  46         },
  47         .num_resources  = 1,
  48         .resource       = &micro9_flash_resource,
  49 };
  50
  51 static void __init __micro9_register_flash(unsigned int width)
  52 {
  53         micro9_flash_data.width = width;
  54
  55         platform_device_register(&micro9_flash);
  56 }
  57
  58 static unsigned int __init micro9_detect_bootwidth(void)
  59 {
  60         u32 v;
  61
  62         /* Detect the bus width of the external flash memory */
  63         v = __raw_readl(EP93XX_SYSCON_SYSCFG);
  64         if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
  65                 return 4; /* 32-bit */
  66         else
  67                 return 2; /* 16-bit */
  68 }
  69
  70 static void __init micro9_register_flash(void)
  71 {
  72         if (machine_is_micro9())
  73                 __micro9_register_flash(4);
  74         else if (machine_is_micro9m() || machine_is_micro9s())
  75                 __micro9_register_flash(micro9_detect_bootwidth());
  76 }
  77
  78
  79 /*************************************************************************
  80  * Micro9 Ethernet
  81  *************************************************************************/
  82 static struct ep93xx_eth_data micro9_eth_data = {
  83         .phy_id         = 0x1f,
  84 };
  85
  86
  87 static void __init micro9_init_machine(void)
  88 {
  89         ep93xx_init_devices();
  90         ep93xx_register_eth(&micro9_eth_data, 1);
  91         micro9_register_flash();
  92 }
  93
  94
  95 #ifdef CONFIG_MACH_MICRO9H
  96 MACHINE_START(MICRO9, "Contec Micro9-High")
  97         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
  98         .phys_io        = EP93XX_APB_PHYS_BASE,
  99         .io_pg_offst    = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
 100         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 101         .map_io         = ep93xx_map_io,
 102         .init_irq       = ep93xx_init_irq,
 103         .timer          = &ep93xx_timer,
 104         .init_machine   = micro9_init_machine,
 105 MACHINE_END
 106 #endif
 107
 108 #ifdef CONFIG_MACH_MICRO9M
 109 MACHINE_START(MICRO9M, "Contec Micro9-Mid")
 110         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
 111         .phys_io        = EP93XX_APB_PHYS_BASE,
 112         .io_pg_offst    = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
 113         .boot_params    = EP93XX_SDCE3_PHYS_BASE_ASYNC + 0x100,
 114         .map_io         = ep93xx_map_io,
 115         .init_irq       = ep93xx_init_irq,
 116         .timer          = &ep93xx_timer,
 117         .init_machine   = micro9_init_machine,
 118 MACHINE_END
 119 #endif
 120
 121 #ifdef CONFIG_MACH_MICRO9L
 122 MACHINE_START(MICRO9L, "Contec Micro9-Lite")
 123         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
 124         .phys_io        = EP93XX_APB_PHYS_BASE,
 125         .io_pg_offst    = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
 126         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 127         .map_io         = ep93xx_map_io,
 128         .init_irq       = ep93xx_init_irq,
 129         .timer          = &ep93xx_timer,
 130         .init_machine   = micro9_init_machine,
 131 MACHINE_END
 132 #endif
 133
 134 #ifdef CONFIG_MACH_MICRO9S
 135 MACHINE_START(MICRO9S, "Contec Micro9-Slim")
 136         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
 137         .phys_io        = EP93XX_APB_PHYS_BASE,
 138         .io_pg_offst    = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
 139         .boot_params    = EP93XX_SDCE3_PHYS_BASE_ASYNC + 0x100,
 140         .map_io         = ep93xx_map_io,
 141         .init_irq       = ep93xx_init_irq,
 142         .timer          = &ep93xx_timer,
 143         .init_machine   = micro9_init_machine,
 144 MACHINE_END
 145 #endif