board/esd/du405/du405.c

   1 /*
   2  * (C) Copyright 2000, 2001
   3  * Stefan Roese, esd gmbh germany, stefan.roese@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 "du405.h"
  26 #include <asm/processor.h>
  27 #include <ppc4xx.h>
  28 #include <405gp_i2c.h>
  29 #include <command.h>
  30
  31 /*cmd_boot.c*/
  32
  33 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  34 extern void lxt971_no_sleep(void);
  35
  36
  37 #if 0
  38 #define FPGA_DEBUG
  39 #endif
  40
  41 #if 0
  42 #define FPGA_DEBUG2
  43 #endif
  44
  45 /* fpga configuration data - generated by bin2cc */
  46 const unsigned char fpgadata[] = {
  47 #include "fpgadata.c"
  48 };
  49
  50 /*
  51  * include common fpga code (for esd boards)
  52  */
  53 #include "../common/fpga.c"
  54
  55
  56 int board_early_init_f (void)
  57 {
  58         DECLARE_GLOBAL_DATA_PTR;
  59
  60         int index, len, i;
  61         int status;
  62
  63 #ifdef FPGA_DEBUG
  64         /* set up serial port with default baudrate */
  65         (void) get_clocks ();
  66         gd->baudrate = CONFIG_BAUDRATE;
  67         serial_init ();
  68         console_init_f ();
  69 #endif
  70
  71         /*
  72          * Boot onboard FPGA
  73          */
  74         status = fpga_boot ((unsigned char *) fpgadata, sizeof (fpgadata));
  75         if (status != 0) {
  76                 /* booting FPGA failed */
  77 #ifndef FPGA_DEBUG
  78                 /* set up serial port with default baudrate */
  79                 (void) get_clocks ();
  80                 gd->baudrate = CONFIG_BAUDRATE;
  81                 serial_init ();
  82                 console_init_f ();
  83 #endif
  84                 printf ("\nFPGA: Booting failed ");
  85                 switch (status) {
  86                 case ERROR_FPGA_PRG_INIT_LOW:
  87                         printf ("(Timeout: INIT not low after asserting PROGRAM*)\n ");
  88                         break;
  89                 case ERROR_FPGA_PRG_INIT_HIGH:
  90                         printf ("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
  91                         break;
  92                 case ERROR_FPGA_PRG_DONE:
  93                         printf ("(Timeout: DONE not high after programming FPGA)\n ");
  94                         break;
  95                 }
  96
  97                 /* display infos on fpgaimage */
  98                 index = 15;
  99                 for (i = 0; i < 4; i++) {
 100                         len = fpgadata[index];
 101                         printf ("FPGA: %s\n", &(fpgadata[index + 1]));
 102                         index += len + 3;
 103                 }
 104                 putc ('\n');
 105                 /* delayed reboot */
 106                 for (i = 20; i > 0; i--) {
 107                         printf ("Rebooting in %2d seconds \r", i);
 108                         for (index = 0; index < 1000; index++)
 109                                 udelay (1000);
 110                 }
 111                 putc ('\n');
 112                 do_reset (NULL, 0, 0, NULL);
 113         }
 114
 115         /*
 116          * IRQ 0-15  405GP internally generated; active high; level sensitive
 117          * IRQ 16    405GP internally generated; active low; level sensitive
 118          * IRQ 17-24 RESERVED
 119          * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
 120          * IRQ 26 (EXT IRQ 1) DUART_A; active high; level sensitive
 121          * IRQ 27 (EXT IRQ 2) DUART_B; active high; level sensitive
 122          * IRQ 28 (EXT IRQ 3) unused; active low; level sensitive
 123          * IRQ 29 (EXT IRQ 4) unused; active low; level sensitive
 124          * IRQ 30 (EXT IRQ 5) unused; active low; level sensitive
 125          * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
 126          */
 127         mtdcr (uicsr, 0xFFFFFFFF);      /* clear all ints */
 128         mtdcr (uicer, 0x00000000);      /* disable all ints */
 129         mtdcr (uiccr, 0x00000000);      /* set all to be non-critical */
 130         mtdcr (uicpr, 0xFFFFFFB1);      /* set int polarities */
 131         mtdcr (uictr, 0x10000000);      /* set int trigger levels */
 132         mtdcr (uicvcr, 0x00000001);     /* set vect base=0,INT0 highest priority */
 133         mtdcr (uicsr, 0xFFFFFFFF);      /* clear all ints */
 134
 135         /*
 136          * EBC Configuration Register: set ready timeout to 100 us
 137          */
 138         mtebc (epcr, 0xb8400000);
 139
 140         return 0;
 141 }
 142
 143
 144 int misc_init_r (void)
 145 {
 146         unsigned long cntrl0Reg;
 147
 148         /*
 149          * Setup UART1 handshaking: use CTS instead of DSR
 150          */
 151         cntrl0Reg = mfdcr(cntrl0);
 152         mtdcr(cntrl0, cntrl0Reg | 0x00001000);
 153
 154         return (0);
 155 }
 156
 157
 158 /*
 159  * Check Board Identity:
 160  */
 161 int checkboard (void)
 162 {
 163         int index;
 164         int len;
 165         char str[64];
 166         int i = getenv_r ("serial#", str, sizeof (str));
 167
 168         puts ("Board: ");
 169
 170         if (i == -1) {
 171                 puts ("### No HW ID - assuming DU405");
 172         } else {
 173                 puts (str);
 174         }
 175
 176         puts ("\nFPGA:  ");
 177
 178         /* display infos on fpgaimage */
 179         index = 15;
 180         for (i = 0; i < 4; i++) {
 181                 len = fpgadata[index];
 182                 printf ("%s ", &(fpgadata[index + 1]));
 183                 index += len + 3;
 184         }
 185
 186         putc ('\n');
 187
 188         /*
 189          * Reset external DUART via FPGA
 190          */
 191         *(volatile unsigned char *) FPGA_MODE_REG = 0xff;       /* reset high active */
 192         *(volatile unsigned char *) FPGA_MODE_REG = 0x00;       /* low again */
 193
 194         /*
 195          * Disable sleep mode in LXT971
 196          */
 197         lxt971_no_sleep();
 198
 199         return 0;
 200 }
 201
 202
 203 long int initdram (int board_type)
 204 {
 205         return (16 * 1024 * 1024);
 206 }
 207
 208
 209 int testdram (void)
 210 {
 211         /* TODO: XXX XXX XXX */
 212         printf ("test: 16 MB - ok\n");
 213
 214         return (0);
 215 }