board/csb226/csb226.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 <asm/arch/pxa-regs.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 #ifdef CONFIG_SHOW_BOOT_PROGRESS
  32 # define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
  33 #else
  34 # define SHOW_BOOT_PROGRESS(arg)
  35 #endif
  36
  37 /**
  38  * misc_init_r: - misc initialisation routines
  39  */
  40
  41 int misc_init_r(void)
  42 {
  43 #if 0
  44         uchar *str;
  45
  46         /* determine if the software update key is pressed during startup */
  47         /* not ported yet... */
  48         if (GPLR0 & 0x00000800) {
  49                 printf("using bootcmd_normal (sw-update button not pressed)\n");
  50                 str = getenv("bootcmd_normal");
  51         } else {
  52                 printf("using bootcmd_update (sw-update button pressed)\n");
  53                 str = getenv("bootcmd_update");
  54         }
  55
  56         setenv("bootcmd",str);
  57 #endif
  58         return 0;
  59 }
  60
  61
  62 /**
  63  * board_init: - setup some data structures
  64  *
  65  * @return: 0 in case of success
  66  */
  67
  68 int board_init (void)
  69 {
  70         /* memory and cpu-speed are setup before relocation */
  71         /* so we do _nothing_ here */
  72
  73         /* arch number of CSB226 board */
  74         gd->bd->bi_arch_number = MACH_TYPE_CSB226;
  75
  76         /* adress of boot parameters */
  77         gd->bd->bi_boot_params = 0xa0000100;
  78
  79         return 0;
  80 }
  81
  82
  83 /**
  84  * dram_init: - setup dynamic RAM
  85  *
  86  * @return: 0 in case of success
  87  */
  88
  89 int dram_init (void)
  90 {
  91         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  92         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  93
  94         return 0;
  95 }
  96
  97
  98 /**
  99  * csb226_set_led: - switch LEDs on or off
 100  *
 101  * @param led:   LED to switch (0,1,2)
 102  * @param state: switch on (1) or off (0)
 103  */
 104
 105 void csb226_set_led(int led, int state)
 106 {
 107         switch(led) {
 108
 109                 case 0: if (state==1) {
 110                                 GPCR0 |= CSB226_USER_LED0;
 111                         } else if (state==0) {
 112                                 GPSR0 |= CSB226_USER_LED0;
 113                         }
 114                         break;
 115
 116                 case 1: if (state==1) {
 117                                 GPCR0 |= CSB226_USER_LED1;
 118                         } else if (state==0) {
 119                                 GPSR0 |= CSB226_USER_LED1;
 120                         }
 121                         break;
 122
 123                 case 2: if (state==1) {
 124                                 GPCR0 |= CSB226_USER_LED2;
 125                         } else if (state==0) {
 126                                 GPSR0 |= CSB226_USER_LED2;
 127                         }
 128                         break;
 129         }
 130
 131         return;
 132 }
 133
 134
 135 /**
 136  * show_boot_progress: - indicate state of the boot process
 137  *
 138  * @param status: Status number - see README for details.
 139  *
 140  * The CSB226 does only have 3 LEDs, so we switch them on at the most
 141  * important states (1, 5, 15).
 142  */
 143
 144 void show_boot_progress (int status)
 145 {
 146         switch(status) {
 147                 case  1: csb226_set_led(0,1); break;
 148                 case  5: csb226_set_led(1,1); break;
 149                 case 15: csb226_set_led(2,1); break;
 150         }
 151
 152         return;
 153 }