board/esd/canbt/canbt.c

   1 /*
   2  * (C) Copyright 2001
   3  * Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.com
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include "canbt.h"
  26 #include <asm/processor.h>
  27 #include <asm/io.h>
  28 #include <command.h>
  29
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 /*cmd_boot.c*/
  33 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  34
  35
  36 /* ------------------------------------------------------------------------- */
  37
  38 #if 0
  39 #define FPGA_DEBUG
  40 #endif
  41
  42 /* fpga configuration data */
  43 const unsigned char fpgadata[] = {
  44 #include "fpgadata.c"
  45 };
  46
  47 /*
  48  * include common fpga code (for esd boards)
  49  */
  50 #include "../common/fpga.c"
  51
  52
  53 int board_early_init_f (void)
  54 {
  55         unsigned long CPC0_CR0Reg;
  56         int index, len, i;
  57         int status;
  58
  59         /*
  60          * Setup GPIO pins
  61          */
  62         CPC0_CR0Reg = mfdcr (CPC0_CR0) & 0xf0001fff;
  63         CPC0_CR0Reg |= 0x0070f000;
  64         mtdcr (CPC0_CR0, CPC0_CR0Reg);
  65
  66 #ifdef FPGA_DEBUG
  67         /* set up serial port with default baudrate */
  68         (void) get_clocks ();
  69         gd->baudrate = CONFIG_BAUDRATE;
  70         serial_init ();
  71         console_init_f ();
  72 #endif
  73
  74         /*
  75          * Boot onboard FPGA
  76          */
  77         status = fpga_boot ((unsigned char *) fpgadata, sizeof (fpgadata));
  78         if (status != 0) {
  79                 /* booting FPGA failed */
  80 #ifndef FPGA_DEBUG
  81                 /* set up serial port with default baudrate */
  82                 (void) get_clocks ();
  83                 gd->baudrate = CONFIG_BAUDRATE;
  84                 serial_init ();
  85                 console_init_f ();
  86 #endif
  87                 printf ("\nFPGA: Booting failed ");
  88                 switch (status) {
  89                 case ERROR_FPGA_PRG_INIT_LOW:
  90                         printf ("(Timeout: INIT not low after asserting PROGRAM*)\n ");
  91                         break;
  92                 case ERROR_FPGA_PRG_INIT_HIGH:
  93                         printf ("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
  94                         break;
  95                 case ERROR_FPGA_PRG_DONE:
  96                         printf ("(Timeout: DONE not high after programming FPGA)\n ");
  97                         break;
  98                 }
  99
 100                 /* display infos on fpgaimage */
 101                 index = 15;
 102                 for (i = 0; i < 4; i++) {
 103                         len = fpgadata[index];
 104                         printf ("FPGA: %s\n", &(fpgadata[index + 1]));
 105                         index += len + 3;
 106                 }
 107                 putc ('\n');
 108                 /* delayed reboot */
 109                 for (i = 20; i > 0; i--) {
 110                         printf ("Rebooting in %2d seconds \r", i);
 111                         for (index = 0; index < 1000; index++)
 112                                 udelay (1000);
 113                 }
 114                 putc ('\n');
 115                 do_reset (NULL, 0, 0, NULL);
 116         }
 117
 118         /*
 119          * Setup port pins for normal operation
 120          */
 121         out_be32 ((void *)GPIO0_ODR, 0x00000000);       /* no open drain pins */
 122         out_be32 ((void *)GPIO0_TCR, 0x07038100);       /* setup for output */
 123         out_be32 ((void *)GPIO0_OR, 0x07030100);        /* set output pins to high (default) */
 124
 125         /*
 126          * IRQ 0-15  405GP internally generated; active high; level sensitive
 127          * IRQ 16    405GP internally generated; active low; level sensitive
 128          * IRQ 17-24 RESERVED
 129          * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
 130          * IRQ 26 (EXT IRQ 1) CAN1; active low; level sensitive
 131          * IRQ 27 (EXT IRQ 2) PCI SLOT 0; active low; level sensitive
 132          * IRQ 28 (EXT IRQ 3) PCI SLOT 1; active low; level sensitive
 133          * IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
 134          * IRQ 30 (EXT IRQ 5) PCI SLOT 3; active low; level sensitive
 135          * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
 136          */
 137         mtdcr (uicsr, 0xFFFFFFFF);      /* clear all ints */
 138         mtdcr (uicer, 0x00000000);      /* disable all ints */
 139         mtdcr (uiccr, 0x00000000);      /* set all to be non-critical */
 140         mtdcr (uicpr, 0xFFFFFF81);      /* set int polarities */
 141         mtdcr (uictr, 0x10000000);      /* set int trigger levels */
 142         mtdcr (uicvcr, 0x00000001);     /* set vect base=0,INT0 highest priority */
 143         mtdcr (uicsr, 0xFFFFFFFF);      /* clear all ints */
 144
 145         return 0;
 146 }
 147
 148
 149 /* ------------------------------------------------------------------------- */
 150
 151 /*
 152  * Check Board Identity:
 153  */
 154
 155 int checkboard (void)
 156 {
 157         int index;
 158         int len;
 159         char str[64];
 160         int i = getenv_r ("serial#", str, sizeof (str));
 161
 162         puts ("Board: ");
 163
 164         if (!i || strncmp (str, "CANBT", 5)) {
 165                 puts ("### No HW ID - assuming CANBT\n");
 166                 return (0);
 167         }
 168
 169         puts (str);
 170
 171         puts ("\nFPGA:  ");
 172
 173         /* display infos on fpgaimage */
 174         index = 15;
 175         for (i = 0; i < 4; i++) {
 176                 len = fpgadata[index];
 177                 printf ("%s ", &(fpgadata[index + 1]));
 178                 index += len + 3;
 179         }
 180
 181         putc ('\n');
 182
 183         return 0;
 184 }