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  * SPDX-License-Identifier:     GPL-2.0+
  13  */
  14
  15 #include <common.h>
  16 #include <asm/arch/platform.h>
  17 #include <netdev.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 /* ------------------------------------------------------------------------- */
  22
  23 #define ks8695_read(a)    *((volatile unsigned int *) (KS8695_IO_BASE+(a)))
  24 #define ks8695_write(a,b) *((volatile unsigned int *) (KS8695_IO_BASE+(a))) = (b)
  25
  26 /* ------------------------------------------------------------------------- */
  27
  28
  29 /*
  30  * Miscelaneous platform dependent initialisations
  31  */
  32 int env_flash_cmdline (void)
  33 {
  34         char *sp = (char *) 0x0201c020;
  35         char *ep;
  36         int len;
  37
  38         /* Check if "erase" push button is depressed */
  39         if ((ks8695_read(KS8695_GPIO_DATA) & 0x8) == 0) {
  40                 printf("### Entering network recovery mode...\n");
  41                 setenv("bootargs", "console=ttyAM0,115200 mem=16M initrd=0x400000,6M root=/dev/ram0");
  42                 setenv("bootcmd", "bootp 0x400000; gofsk 0x400000");
  43                 setenv("bootdelay", "2");
  44                 return 0;
  45         }
  46
  47         /* Check for flash based kernel boot args to use as default */
  48         for (ep = sp, len = 0; ((len < 1024) && (*ep != 0)); ep++, len++)
  49                 ;
  50
  51         if ((len > 0) && (len <1024))
  52                 setenv("bootargs", sp);
  53
  54         return 0;
  55 }
  56
  57 int board_late_init (void)
  58 {
  59         return 0;
  60 }
  61
  62 int board_eth_init(bd_t *bis)
  63 {
  64         return ks8695_eth_initialize();
  65 }
  66
  67 int board_init (void)
  68 {
  69         /* arch number of CM4008 */
  70         gd->bd->bi_arch_number = 624;
  71
  72         /* adress of boot parameters */
  73         gd->bd->bi_boot_params = 0x00000100;
  74
  75         /* power down all but port 0 on the switch */
  76         ks8695_write(KS8695_SWITCH_LPPM12, 0x00000005);
  77         ks8695_write(KS8695_SWITCH_LPPM34, 0x00050005);
  78
  79         return 0;
  80 }
  81
  82 int dram_init (void)
  83 {
  84         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  85         gd->bd->bi_dram[0].size  = PHYS_SDRAM_1_SIZE;
  86
  87         return (0);
  88 }