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   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3beagle.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/io.h>
  22 #include <linux/leds.h>
  23 #include <linux/gpio.h>
  24 #include <linux/input.h>
  25 #include <linux/gpio_keys.h>
  26
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/mtd/nand.h>
  30
  31 #include <mach/hardware.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/flash.h>
  36
  37 #include <mach/board.h>
  38 #include <mach/common.h>
  39 #include <mach/gpmc.h>
  40 #include <mach/nand.h>
  41
  42
  43 #define GPMC_CS0_BASE  0x60
  44 #define GPMC_CS_SIZE   0x30
  45
  46 #define NAND_BLOCK_SIZE         SZ_128K
  47
  48 static struct mtd_partition omap3beagle_nand_partitions[] = {
  49         /* All the partition sizes are listed in terms of NAND block size */
  50         {
  51                 .name           = "X-Loader",
  52                 .offset         = 0,
  53                 .size           = 4 * NAND_BLOCK_SIZE,
  54                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  55         },
  56         {
  57                 .name           = "U-Boot",
  58                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  59                 .size           = 15 * NAND_BLOCK_SIZE,
  60                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  61         },
  62         {
  63                 .name           = "U-Boot Env",
  64                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  65                 .size           = 1 * NAND_BLOCK_SIZE,
  66         },
  67         {
  68                 .name           = "Kernel",
  69                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  70                 .size           = 32 * NAND_BLOCK_SIZE,
  71         },
  72         {
  73                 .name           = "File System",
  74                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  75                 .size           = MTDPART_SIZ_FULL,
  76         },
  77 };
  78
  79 static struct omap_nand_platform_data omap3beagle_nand_data = {
  80         .options        = NAND_BUSWIDTH_16,
  81         .parts          = omap3beagle_nand_partitions,
  82         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  83         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  84         .nand_setup     = NULL,
  85         .dev_ready      = NULL,
  86 };
  87
  88 static struct resource omap3beagle_nand_resource = {
  89         .flags          = IORESOURCE_MEM,
  90 };
  91
  92 static struct platform_device omap3beagle_nand_device = {
  93         .name           = "omap2-nand",
  94         .id             = -1,
  95         .dev            = {
  96                 .platform_data  = &omap3beagle_nand_data,
  97         },
  98         .num_resources  = 1,
  99         .resource       = &omap3beagle_nand_resource,
 100 };
 101
 102 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 103         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 104 };
 105
 106 static void __init omap3_beagle_init_irq(void)
 107 {
 108         omap2_init_common_hw();
 109         omap_init_irq();
 110         omap_gpio_init();
 111 }
 112
 113 static struct platform_device omap3_beagle_lcd_device = {
 114         .name           = "omap3beagle_lcd",
 115         .id             = -1,
 116 };
 117
 118 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 119         .ctrl_name      = "internal",
 120 };
 121
 122 static struct gpio_led gpio_leds[] = {
 123         {
 124                 .name                   = "beagleboard::usr0",
 125                 .default_trigger        = "heartbeat",
 126                 .gpio                   = 150,
 127         },
 128         {
 129                 .name                   = "beagleboard::usr1",
 130                 .default_trigger        = "mmc0",
 131                 .gpio                   = 149,
 132         },
 133 };
 134
 135 static struct gpio_led_platform_data gpio_led_info = {
 136         .leds           = gpio_leds,
 137         .num_leds       = ARRAY_SIZE(gpio_leds),
 138 };
 139
 140 static struct platform_device leds_gpio = {
 141         .name   = "leds-gpio",
 142         .id     = -1,
 143         .dev    = {
 144                 .platform_data  = &gpio_led_info,
 145         },
 146 };
 147
 148 static struct gpio_keys_button gpio_buttons[] = {
 149         {
 150                 .code                   = BTN_EXTRA,
 151                 .gpio                   = 7,
 152                 .desc                   = "user",
 153                 .wakeup                 = 1,
 154         },
 155 };
 156
 157 static struct gpio_keys_platform_data gpio_key_info = {
 158         .buttons        = gpio_buttons,
 159         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 160 };
 161
 162 static struct platform_device keys_gpio = {
 163         .name   = "gpio-keys",
 164         .id     = -1,
 165         .dev    = {
 166                 .platform_data  = &gpio_key_info,
 167         },
 168 };
 169
 170 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 171         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 172         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 173 };
 174
 175 static struct platform_device *omap3_beagle_devices[] __initdata = {
 176         &omap3_beagle_lcd_device,
 177         &leds_gpio,
 178         &keys_gpio,
 179 };
 180
 181 static void __init omap3beagle_flash_init(void)
 182 {
 183         u8 cs = 0;
 184         u8 nandcs = GPMC_CS_NUM + 1;
 185
 186         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 187
 188         /* find out the chip-select on which NAND exists */
 189         while (cs < GPMC_CS_NUM) {
 190                 u32 ret = 0;
 191                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 192
 193                 if ((ret & 0xC00) == 0x800) {
 194                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 195                         if (nandcs > GPMC_CS_NUM)
 196                                 nandcs = cs;
 197                 }
 198                 cs++;
 199         }
 200
 201         if (nandcs > GPMC_CS_NUM) {
 202                 printk(KERN_INFO "NAND: Unable to find configuration "
 203                                  "in GPMC\n ");
 204                 return;
 205         }
 206
 207         if (nandcs < GPMC_CS_NUM) {
 208                 omap3beagle_nand_data.cs = nandcs;
 209                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 210                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 211                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 212
 213                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 214                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 215                         printk(KERN_ERR "Unable to register NAND device\n");
 216         }
 217 }
 218
 219 static void __init omap3_beagle_init(void)
 220 {
 221         platform_add_devices(omap3_beagle_devices,
 222                         ARRAY_SIZE(omap3_beagle_devices));
 223         omap_board_config = omap3_beagle_config;
 224         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 225         omap_serial_init();
 226         omap3beagle_flash_init();
 227 }
 228
 229 static void __init omap3_beagle_map_io(void)
 230 {
 231         omap2_set_globals_343x();
 232         omap2_map_common_io();
 233 }
 234
 235 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 236         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 237         .phys_io        = 0x48000000,
 238         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 239         .boot_params    = 0x80000100,
 240         .map_io         = omap3_beagle_map_io,
 241         .init_irq       = omap3_beagle_init_irq,
 242         .init_machine   = omap3_beagle_init,
 243         .timer          = &omap_timer,
 244 MACHINE_END