board/smdk2400/smdk2400.c

   1 /*
   2  * (C) Copyright 2002
   3  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   4  * Marius Groeger <mgroeger@sysgo.de>
   5  *
   6  * (C) Copyright 2002
   7  * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <s3c2400.h>
  30
  31 /* ------------------------------------------------------------------------- */
  32
  33 #ifdef CONFIG_MODEM_SUPPORT
  34 static int key_pressed(void);
  35 int mdm_init (bd_t *);
  36 extern void disable_putc(void);
  37 extern void enable_putc(void);
  38 extern int hwflow_onoff(int);
  39 extern int do_mdm_init; /* defined in common/main.c */
  40 #endif /* CONFIG_MODEM_SUPPORT */
  41
  42 /*
  43  * Miscellaneous platform dependent initialisations
  44  */
  45
  46 int board_init (void)
  47 {
  48         DECLARE_GLOBAL_DATA_PTR;
  49         S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
  50         S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
  51
  52         /* memory and cpu-speed are setup before relocation */
  53         /* change the clock to be 50 MHz 1:1:1 */
  54         clk_power->MPLLCON = 0x5c042;
  55         clk_power->CLKDIVN = 0;
  56         /* set up the I/O ports */
  57         gpio->PACON = 0x3ffff;
  58         gpio->PBCON = 0xaaaaaaaa;
  59         gpio->PBUP = 0xffff;
  60         gpio->PECON = 0x0;
  61         gpio->PEUP = 0x0;
  62 #ifdef CONFIG_HWFLOW
  63         /*CTS[0] RTS[0] INPUT INPUT TXD[0] INPUT RXD[0] */
  64         /*   10,   10,   00,   00,    10,   00,    10 */
  65         gpio->PFCON=0xa22;
  66         /* Disable pull-up on Rx, Tx, CTS and RTS pins */
  67         gpio->PFUP=0x35;
  68 #else
  69         /*INPUT INPUT INPUT INPUT TXD[0] INPUT RXD[0] */
  70         /*   00,   00,   00,   00,    10,   00,    10 */
  71         gpio->PFCON = 0x22;
  72         /* Disable pull-up on Rx and Tx pins */
  73         gpio->PFUP = 0x5;
  74 #endif  /* CONFIG_HWFLOW */
  75         gpio->PGCON = 0x0;
  76         gpio->PGUP = 0x0;
  77         gpio->OPENCR = 0x0;
  78
  79         /* arch number of SAMSUNG-Board to MACH_TYPE_SMDK2400 */
  80         gd->bd->bi_arch_number = 145;
  81
  82         /* adress of boot parameters */
  83         gd->bd->bi_boot_params = 0x0C000100;
  84
  85 #ifdef CONFIG_MODEM_SUPPORT
  86         if (key_pressed()) {
  87                 disable_putc(); /* modem doesn't understand banner etc */
  88                 do_mdm_init = 1;
  89         }
  90 #endif  /* CONFIG_MODEM_SUPPORT */
  91
  92         return 0;
  93 }
  94
  95 int dram_init (void)
  96 {
  97         DECLARE_GLOBAL_DATA_PTR;
  98
  99         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 100         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 101
 102         return 0;
 103 }
 104
 105 #ifdef CONFIG_MODEM_SUPPORT
 106 static int key_pressed(void)
 107 {
 108         int rc;
 109         if (1) {        /* check for button push here, now just return 1 */
 110                 rc = 1;
 111         }
 112
 113         return rc;
 114 }
 115 #endif  /* CONFIG_MODEM_SUPPORT */