board/innokom/innokom.c

   1 /*
   2  * (C) Copyright 2002
   3  * Robert Schwebel, Pengutronix, r.schwebel@pengutronix.de
   4  * Kyle Harris, Nexus Technologies, Inc., kharris@nexus-tech.net
   5  * Marius Groeger, Sysgo Real-Time Solutions GmbH, mgroeger@sysgo.de
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <netdev.h>
  28 #include <asm/arch/pxa-regs.h>
  29 #include <asm/mach-types.h>
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 #ifdef CONFIG_SHOW_BOOT_PROGRESS
  34 # define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
  35 #else
  36 # define SHOW_BOOT_PROGRESS(arg)
  37 #endif
  38
  39 /**
  40  * i2c_init_board - reset i2c bus. When the board is powercycled during a
  41  * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
  42  * The Innokom board has GPIO70 connected to SCLK which can be toggled
  43  * until all chips think that their current cycles are finished.
  44  */
  45 int i2c_init_board(void)
  46 {
  47         int i, icr;
  48
  49         /* disable I2C controller first, otherwhise it thinks we want to    */
  50         /* talk to the slave port...                                        */
  51         icr = ICR; ICR &= ~(ICR_SCLE | ICR_IUE);
  52
  53         /* set gpio pin low _before_ we change direction to output          */
  54         GPCR(70) = GPIO_bit(70);
  55
  56         /* now toggle between output=low and high-impedance                 */
  57         for (i = 0; i < 20; i++) {
  58                 GPDR(70) |= GPIO_bit(70);  /* output */
  59                 udelay(10);
  60                 GPDR(70) &= ~GPIO_bit(70); /* input  */
  61                 udelay(10);
  62         }
  63
  64         ICR = icr;
  65
  66         return 0;
  67 }
  68
  69
  70 /**
  71  * misc_init_r: - misc initialisation routines
  72  */
  73
  74 int misc_init_r(void)
  75 {
  76         char *str;
  77
  78         /* determine if the software update key is pressed during startup   */
  79         if (GPLR0 & 0x00000800) {
  80                 printf("using bootcmd_normal (sw-update button not pressed)\n");
  81                 str = getenv("bootcmd_normal");
  82         } else {
  83                 printf("using bootcmd_update (sw-update button pressed)\n");
  84                 str = getenv("bootcmd_update");
  85         }
  86
  87         setenv("bootcmd",str);
  88
  89         return 0;
  90 }
  91
  92
  93 /**
  94  * board_init: - setup some data structures
  95  *
  96  * @return: 0 in case of success
  97  */
  98
  99 int board_init (void)
 100 {
 101         /* memory and cpu-speed are setup before relocation */
 102         /* so we do _nothing_ here */
 103
 104         gd->bd->bi_arch_number = MACH_TYPE_INNOKOM;
 105         gd->bd->bi_boot_params = 0xa0000100;
 106         gd->bd->bi_baudrate = CONFIG_BAUDRATE;
 107
 108         return 0;
 109 }
 110
 111
 112 /**
 113  * dram_init: - setup dynamic RAM
 114  *
 115  * @return: 0 in case of success
 116  */
 117
 118 int dram_init (void)
 119 {
 120         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 121         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 122
 123         return 0;
 124 }
 125
 126
 127 /**
 128  * innokom_set_led: - switch LEDs on or off
 129  *
 130  * @param led:   LED to switch (0,1,2)
 131  * @param state: switch on (1) or off (0)
 132  */
 133
 134 void innokom_set_led(int led, int state)
 135 {
 136         switch(led) {
 137 /*
 138                 case 0: if (state==1) {
 139                                 GPCR0 |= CSB226_USER_LED0;
 140                         } else if (state==0) {
 141                                 GPSR0 |= CSB226_USER_LED0;
 142                         }
 143                         break;
 144
 145                 case 1: if (state==1) {
 146                                 GPCR0 |= CSB226_USER_LED1;
 147                         } else if (state==0) {
 148                                 GPSR0 |= CSB226_USER_LED1;
 149                         }
 150                         break;
 151
 152                 case 2: if (state==1) {
 153                                 GPCR0 |= CSB226_USER_LED2;
 154                         } else if (state==0) {
 155                                 GPSR0 |= CSB226_USER_LED2;
 156                         }
 157                         break;
 158 */
 159         }
 160
 161         return;
 162 }
 163
 164
 165 /**
 166  * show_boot_progress: - indicate state of the boot process
 167  *
 168  * @param status: Status number - see README for details.
 169  *
 170  * The CSB226 does only have 3 LEDs, so we switch them on at the most
 171  * important states (1, 5, 15).
 172  */
 173
 174 void show_boot_progress (int status)
 175 {
 176         switch(status) {
 177 /*
 178                 case  1: csb226_set_led(0,1); break;
 179                 case  5: csb226_set_led(1,1); break;
 180                 case 15: csb226_set_led(2,1); break;
 181 */
 182         }
 183
 184         return;
 185 }
 186
 187 #ifdef CONFIG_CMD_NET
 188 int board_eth_init(bd_t *bis)
 189 {
 190         int rc = 0;
 191 #ifdef CONFIG_SMC91111
 192         rc = smc91111_initialize(0, CONFIG_SMC91111_BASE);
 193 #endif
 194         return rc;
 195 }
 196 #endif