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 #include <netdev.h>
  34
  35 DECLARE_GLOBAL_DATA_PTR;
  36
  37 /* ------------------------------------------------------------------------- */
  38
  39 #define ks8695_read(a)    *((volatile unsigned int *) (KS8695_IO_BASE+(a)))
  40 #define ks8695_write(a,b) *((volatile unsigned int *) (KS8695_IO_BASE+(a))) = (b)
  41
  42 /* ------------------------------------------------------------------------- */
  43
  44
  45 /*
  46  * Miscelaneous platform dependent initialisations
  47  */
  48 int env_flash_cmdline (void)
  49 {
  50         char *sp = (char *) 0x0201c020;
  51         char *ep;
  52         int len;
  53
  54         /* Check if "erase" push button is depressed */
  55         if ((ks8695_read(KS8695_GPIO_DATA) & 0x8) == 0) {
  56                 printf("### Entering network recovery mode...\n");
  57                 setenv("bootargs", "console=ttyAM0,115200 mem=16M initrd=0x400000,6M root=/dev/ram0");
  58                 setenv("bootcmd", "bootp 0x400000; gofsk 0x400000");
  59                 setenv("bootdelay", "2");
  60                 return 0;
  61         }
  62
  63         /* Check for flash based kernel boot args to use as default */
  64         for (ep = sp, len = 0; ((len < 1024) && (*ep != 0)); ep++, len++)
  65                 ;
  66
  67         if ((len > 0) && (len <1024))
  68                 setenv("bootargs", sp);
  69
  70         return 0;
  71 }
  72
  73 int board_late_init (void)
  74 {
  75         return 0;
  76 }
  77
  78 int board_eth_init(bd_t *bis)
  79 {
  80         return ks8695_eth_initialize();
  81 }
  82
  83 int board_init (void)
  84 {
  85         /* arch number of CM4008 */
  86         gd->bd->bi_arch_number = 624;
  87
  88         /* adress of boot parameters */
  89         gd->bd->bi_boot_params = 0x00000100;
  90
  91         /* power down all but port 0 on the switch */
  92         ks8695_write(KS8695_SWITCH_LPPM12, 0x00000005);
  93         ks8695_write(KS8695_SWITCH_LPPM34, 0x00050005);
  94
  95         return 0;
  96 }
  97
  98 int dram_init (void)
  99 {
 100         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 101         gd->bd->bi_dram[0].size  = PHYS_SDRAM_1_SIZE;
 102
 103         return (0);
 104 }