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