board/overo/overo.c

   1 /*
   2  * Maintainer : Steve Sakoman <steve@sakoman.com>
   3  *
   4  * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
   5  *      Richard Woodruff <r-woodruff2@ti.com>
   6  *      Syed Mohammed Khasim <khasim@ti.com>
   7  *      Sunil Kumar <sunilsaini05@gmail.com>
   8  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   9  *
  10  * (C) Copyright 2004-2008
  11  * Texas Instruments, <www.ti.com>
  12  *
  13  * See file CREDITS for list of people who contributed to this
  14  * project.
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License as
  18  * published by the Free Software Foundation; either version 2 of
  19  * the License, or (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29  * MA 02111-1307 USA
  30  */
  31 #include <common.h>
  32 #include <netdev.h>
  33 #include <twl4030.h>
  34 #include <asm/io.h>
  35 #include <asm/arch/mmc_host_def.h>
  36 #include <asm/arch/mux.h>
  37 #include <asm/arch/mem.h>
  38 #include <asm/arch/sys_proto.h>
  39 #include <asm/arch/omap_gpmc.h>
  40 #include <asm/gpio.h>
  41 #include <asm/mach-types.h>
  42 #include "overo.h"
  43
  44 DECLARE_GLOBAL_DATA_PTR;
  45
  46 #define TWL4030_I2C_BUS                 0
  47 #define EXPANSION_EEPROM_I2C_BUS        2
  48 #define EXPANSION_EEPROM_I2C_ADDRESS    0x51
  49
  50 #define GUMSTIX_SUMMIT                  0x01000200
  51 #define GUMSTIX_TOBI                    0x02000200
  52 #define GUMSTIX_TOBI_DUO                0x03000200
  53 #define GUMSTIX_PALO35                  0x04000200
  54 #define GUMSTIX_PALO43                  0x05000200
  55 #define GUMSTIX_CHESTNUT43              0x06000200
  56 #define GUMSTIX_PINTO                   0x07000200
  57 #define GUMSTIX_GALLOP43                0x08000200
  58
  59 #define ETTUS_USRP_E                    0x01000300
  60
  61 #define GUMSTIX_NO_EEPROM               0xffffffff
  62
  63 static struct {
  64         unsigned int device_vendor;
  65         unsigned char revision;
  66         unsigned char content;
  67         char fab_revision[8];
  68         char env_var[16];
  69         char env_setting[64];
  70 } expansion_config;
  71
  72 #if defined(CONFIG_CMD_NET)
  73 static void setup_net_chip(void);
  74 #endif
  75
  76 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */
  77 static const u32 gpmc_lan_config[] = {
  78     NET_LAN9221_GPMC_CONFIG1,
  79     NET_LAN9221_GPMC_CONFIG2,
  80     NET_LAN9221_GPMC_CONFIG3,
  81     NET_LAN9221_GPMC_CONFIG4,
  82     NET_LAN9221_GPMC_CONFIG5,
  83     NET_LAN9221_GPMC_CONFIG6,
  84     /*CONFIG7- computed as params */
  85 };
  86
  87 /*
  88  * Routine: board_init
  89  * Description: Early hardware init.
  90  */
  91 int board_init(void)
  92 {
  93         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  94         /* board id for Linux */
  95         gd->bd->bi_arch_number = MACH_TYPE_OVERO;
  96         /* boot param addr */
  97         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  98
  99         return 0;
 100 }
 101
 102 /*
 103  * Routine: get_board_revision
 104  * Description: Returns the board revision
 105  */
 106 int get_board_revision(void)
 107 {
 108         int revision;
 109
 110         if (!gpio_request(112, "") &&
 111             !gpio_request(113, "") &&
 112             !gpio_request(115, "")) {
 113
 114                 gpio_direction_input(112);
 115                 gpio_direction_input(113);
 116                 gpio_direction_input(115);
 117
 118                 revision = gpio_get_value(115) << 2 |
 119                            gpio_get_value(113) << 1 |
 120                            gpio_get_value(112);
 121         } else {
 122                 printf("Error: unable to acquire board revision GPIOs\n");
 123                 revision = -1;
 124         }
 125
 126         return revision;
 127 }
 128
 129 /*
 130  * Routine: get_sdio2_config
 131  * Description: Return information about the wifi module connection
 132  *              Returns 0 if the module connects though a level translator
 133  *              Returns 1 if the module connects directly
 134  */
 135 int get_sdio2_config(void)
 136 {
 137         int sdio_direct;
 138
 139         if (!gpio_request(130, "") && !gpio_request(139, "")) {
 140
 141                 gpio_direction_output(130, 0);
 142                 gpio_direction_input(139);
 143
 144                 sdio_direct = 1;
 145                 gpio_set_value(130, 0);
 146                 if (gpio_get_value(139) == 0) {
 147                         gpio_set_value(130, 1);
 148                         if (gpio_get_value(139) == 1)
 149                                 sdio_direct = 0;
 150                 }
 151
 152                 gpio_direction_input(130);
 153         } else {
 154                 printf("Error: unable to acquire sdio2 clk GPIOs\n");
 155                 sdio_direct = -1;
 156         }
 157
 158         return sdio_direct;
 159 }
 160
 161 /*
 162  * Routine: get_expansion_id
 163  * Description: This function checks for expansion board by checking I2C
 164  *              bus 2 for the availability of an AT24C01B serial EEPROM.
 165  *              returns the device_vendor field from the EEPROM
 166  */
 167 unsigned int get_expansion_id(void)
 168 {
 169         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
 170
 171         /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
 172         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
 173                 i2c_set_bus_num(TWL4030_I2C_BUS);
 174                 return GUMSTIX_NO_EEPROM;
 175         }
 176
 177         /* read configuration data */
 178         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
 179                  sizeof(expansion_config));
 180
 181         i2c_set_bus_num(TWL4030_I2C_BUS);
 182
 183         return expansion_config.device_vendor;
 184 }
 185
 186 /*
 187  * Routine: misc_init_r
 188  * Description: Configure board specific parts
 189  */
 190 int misc_init_r(void)
 191 {
 192         twl4030_power_init();
 193         twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 194
 195 #if defined(CONFIG_CMD_NET)
 196         setup_net_chip();
 197 #endif
 198
 199         printf("Board revision: %d\n", get_board_revision());
 200
 201         switch (get_sdio2_config()) {
 202         case 0:
 203                 printf("Tranceiver detected on mmc2\n");
 204                 MUX_OVERO_SDIO2_TRANSCEIVER();
 205                 break;
 206         case 1:
 207                 printf("Direct connection on mmc2\n");
 208                 MUX_OVERO_SDIO2_DIRECT();
 209                 break;
 210         default:
 211                 printf("Unable to detect mmc2 connection type\n");
 212         }
 213
 214         switch (get_expansion_id()) {
 215         case GUMSTIX_SUMMIT:
 216                 printf("Recognized Summit expansion board (rev %d %s)\n",
 217                         expansion_config.revision,
 218                         expansion_config.fab_revision);
 219                 setenv("defaultdisplay", "dvi");
 220                 break;
 221         case GUMSTIX_TOBI:
 222                 printf("Recognized Tobi expansion board (rev %d %s)\n",
 223                         expansion_config.revision,
 224                         expansion_config.fab_revision);
 225                 setenv("defaultdisplay", "dvi");
 226                 break;
 227         case GUMSTIX_TOBI_DUO:
 228                 printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
 229                         expansion_config.revision,
 230                         expansion_config.fab_revision);
 231                 /* second lan chip */
 232                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
 233                     0x2B000000, GPMC_SIZE_16M);
 234                 break;
 235         case GUMSTIX_PALO35:
 236                 printf("Recognized Palo35 expansion board (rev %d %s)\n",
 237                         expansion_config.revision,
 238                         expansion_config.fab_revision);
 239                 setenv("defaultdisplay", "lcd35");
 240                 break;
 241         case GUMSTIX_PALO43:
 242                 printf("Recognized Palo43 expansion board (rev %d %s)\n",
 243                         expansion_config.revision,
 244                         expansion_config.fab_revision);
 245                 setenv("defaultdisplay", "lcd43");
 246                 break;
 247         case GUMSTIX_CHESTNUT43:
 248                 printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
 249                         expansion_config.revision,
 250                         expansion_config.fab_revision);
 251                 setenv("defaultdisplay", "lcd43");
 252                 break;
 253         case GUMSTIX_PINTO:
 254                 printf("Recognized Pinto expansion board (rev %d %s)\n",
 255                         expansion_config.revision,
 256                         expansion_config.fab_revision);
 257                 break;
 258         case GUMSTIX_GALLOP43:
 259                 printf("Recognized Gallop43 expansion board (rev %d %s)\n",
 260                         expansion_config.revision,
 261                         expansion_config.fab_revision);
 262                 setenv("defaultdisplay", "lcd43");
 263                 break;
 264         case ETTUS_USRP_E:
 265                 printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
 266                         expansion_config.revision,
 267                         expansion_config.fab_revision);
 268                 MUX_USRP_E();
 269                 setenv("defaultdisplay", "dvi");
 270                 break;
 271         case GUMSTIX_NO_EEPROM:
 272                 printf("No EEPROM on expansion board\n");
 273                 break;
 274         default:
 275                 printf("Unrecognized expansion board\n");
 276         }
 277
 278         if (expansion_config.content == 1)
 279                 setenv(expansion_config.env_var, expansion_config.env_setting);
 280
 281         dieid_num_r();
 282
 283         return 0;
 284 }
 285
 286 /*
 287  * Routine: set_muxconf_regs
 288  * Description: Setting up the configuration Mux registers specific to the
 289  *              hardware. Many pins need to be moved from protect to primary
 290  *              mode.
 291  */
 292 void set_muxconf_regs(void)
 293 {
 294         MUX_OVERO();
 295 }
 296
 297 #if defined(CONFIG_CMD_NET)
 298 /*
 299  * Routine: setup_net_chip
 300  * Description: Setting up the configuration GPMC registers specific to the
 301  *            Ethernet hardware.
 302  */
 303 static void setup_net_chip(void)
 304 {
 305         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 306
 307         /* first lan chip */
 308         enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5], 0x2C000000,
 309                         GPMC_SIZE_16M);
 310
 311         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 312         writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 313         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 314         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 315         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 316         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 317                 &ctrl_base->gpmc_nadv_ale);
 318
 319         /* Make GPIO 64 as output pin and send a magic pulse through it */
 320         if (!gpio_request(64, "")) {
 321                 gpio_direction_output(64, 0);
 322                 gpio_set_value(64, 1);
 323                 udelay(1);
 324                 gpio_set_value(64, 0);
 325                 udelay(1);
 326                 gpio_set_value(64, 1);
 327         }
 328 }
 329 #endif
 330
 331 int board_eth_init(bd_t *bis)
 332 {
 333         int rc = 0;
 334 #ifdef CONFIG_SMC911X
 335         rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
 336 #endif
 337         return rc;
 338 }
 339
 340 #ifdef CONFIG_GENERIC_MMC
 341 int board_mmc_init(bd_t *bis)
 342 {
 343         omap_mmc_init(0);
 344         return 0;
 345 }
 346 #endif