board/sbc405/sbc405.c

   1 /*
   2  * (C) Copyright 2001
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include <common.h>
  24 #include <asm/processor.h>
  25 #include <command.h>
  26 #include <malloc.h>
  27 #include <spd_sdram.h>
  28
  29
  30 int board_early_init_f (void)
  31 {
  32         /*
  33          * IRQ 0-15  405GP internally generated; active high; level sensitive
  34          * IRQ 16    405GP internally generated; active low; level sensitive
  35          * IRQ 17-24 RESERVED
  36          * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
  37          * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
  38          * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
  39          * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
  40          * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
  41          * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
  42          * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
  43          */
  44         mtdcr(uicsr, 0xFFFFFFFF);       /* clear all ints */
  45         mtdcr(uicer, 0x00000000);       /* disable all ints */
  46         mtdcr(uiccr, 0x00000000);       /* set all to be non-critical*/
  47         mtdcr(uicpr, 0xFFFFFF81);       /* set int polarities */
  48         mtdcr(uictr, 0x10000000);       /* set int trigger levels */
  49         mtdcr(uicvcr, 0x00000001);      /* set vect base=0,INT0 highest priority*/
  50         mtdcr(uicsr, 0xFFFFFFFF);       /* clear all ints */
  51
  52         /*
  53          * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
  54          */
  55         mtebc (epcr, 0xa8400000);
  56
  57         return 0;
  58 }
  59
  60
  61 /* ------------------------------------------------------------------------- */
  62
  63 int misc_init_f (void)
  64 {
  65         return 0;  /* dummy implementation */
  66 }
  67
  68
  69 int misc_init_r (void)
  70 {
  71         return (0);
  72 }
  73
  74
  75 /*
  76  * Check Board Identity:
  77  */
  78
  79 int checkboard (void)
  80 {
  81         char str[64];
  82         int i = getenv_r ("serial#", str, sizeof(str));
  83
  84         puts ("Board: ");
  85
  86         if (i == -1) {
  87                 puts ("### No HW ID - assuming sbc405");
  88         } else {
  89                 puts(str);
  90         }
  91
  92         putc ('\n');
  93
  94         return 0;
  95 }
  96
  97 /* ------------------------------------------------------------------------- */
  98
  99 long int initdram (int board_type)
 100 {
 101         return  spd_sdram (0);
 102 }
 103
 104 /* ------------------------------------------------------------------------- */
 105
 106 int testdram (void)
 107 {
 108         /* TODO: XXX XXX XXX */
 109         printf ("test: 64 MB - ok\n");
 110
 111         return (0);
 112 }
 113
 114 /* ------------------------------------------------------------------------- */