LXR uboot/board/cm4008/cm4008.c

   1/*
   2 * (C) Copyright 2005
   3 * Greg Ungerer, OpenGear Inc, <greg.ungerer@opengear.com>
   4 *
   5 * (C) Copyright 2002
   6 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
   7 *
   8 * (C) Copyright 2002
   9 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
  10 * Marius Groeger <mgroeger@sysgo.de>
  11 *
  12 * See file CREDITS for list of people who contributed to this
  13 * project.
  14 *
  15 * This program is free software; you can redistribute it and/or
  16 * modify it under the terms of the GNU General Public License as
  17 * published by the Free Software Foundation; either version 2 of
  18 * the License, or (at your option) any later version.
  19 *
  20 * This program is distributed in the hope that it will be useful,
  21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 * GNU General Public License for more details.
  24 *
  25 * You should have received a copy of the GNU General Public License
  26 * along with this program; if not, write to the Free Software
  27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  28 * MA 02111-1307 USA
  29 */
  30
  31#include <common.h>
  32#include <asm/arch/platform.h>
  33
  34DECLARE_GLOBAL_DATA_PTR;
  35
  36/* ------------------------------------------------------------------------- */
  37
  38#define ks8695_read(a)    *((volatile unsigned int *) (KS8695_IO_BASE+(a)))
  39#define ks8695_write(a,b) *((volatile unsigned int *) (KS8695_IO_BASE+(a))) = (b)
  40
  41/* ------------------------------------------------------------------------- */
  42
  43
  44/*
  45 * Miscelaneous platform dependent initialisations
  46 */
  47int env_flash_cmdline (void)
  48{
  49        unsigned char *sp = (unsigned char *) 0x0201c020;
  50        unsigned char *ep;
  51        int len;
  52
  53        /* Check if "erase" push button is depressed */
  54        if ((ks8695_read(KS8695_GPIO_DATA) & 0x8) == 0) {
  55                printf("### Entering network recovery mode...\n");
  56                setenv("bootargs", "console=ttyAM0,115200 mem=16M initrd=0x400000,6M root=/dev/ram0");
  57                setenv("bootcmd", "bootp 0x400000; gofsk 0x400000");
  58                setenv("bootdelay", "2");
  59                return 0;
  60        }
  61
  62        /* Check for flash based kernel boot args to use as default */
  63        for (ep = sp, len = 0; ((len < 1024) && (*ep != 0)); ep++, len++)
  64                ;
  65
  66        if ((len > 0) && (len <1024))
  67                setenv("bootargs", sp);
  68
  69        return 0;
  70}
  71
  72int board_late_init (void)
  73{
  74        return 0;
  75}
  76
  77
  78int board_init (void)
  79{
  80        /* arch number of CM4008 */
  81        gd->bd->bi_arch_number = 624;
  82
  83        /* adress of boot parameters */
  84        gd->bd->bi_boot_params = 0x00000100;
  85
  86        /* power down all but port 0 on the switch */
  87        ks8695_write(KS8695_SWITCH_LPPM12, 0x00000005);
  88        ks8695_write(KS8695_SWITCH_LPPM34, 0x00050005);
  89
  90        return 0;
  91}
  92
  93int dram_init (void)
  94{
  95        gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  96        gd->bd->bi_dram[0].size  = PHYS_SDRAM_1_SIZE;
  97
  98        return (0);
  99}
 100