source: SVN/rincon/u-boot/board/esd/du405/du405.c @ 55

/*
 * (C) Copyright 2000, 2001
 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include "du405.h"
#include <asm/processor.h>
#include <ppc4xx.h>
#include <4xx_i2c.h>
#include <command.h>

DECLARE_GLOBAL_DATA_PTR;

/*cmd_boot.c*/

extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
extern void lxt971_no_sleep(void);


#if 0
#define FPGA_DEBUG
#endif

#if 0
#define FPGA_DEBUG2
#endif

/* fpga configuration data - generated by bin2cc */
const unsigned char fpgadata[] = {
#include "fpgadata.c"
};

/*
 * include common fpga code (for esd boards)
 */
#include "../common/fpga.c"


int board_early_init_f (void)
{
        int index, len, i;
        int status;

#ifdef FPGA_DEBUG
        /* set up serial port with default baudrate */
        (void) get_clocks ();
        gd->baudrate = CONFIG_BAUDRATE;
        serial_init ();
        console_init_f ();
#endif

        /*
         * Boot onboard FPGA
         */
        status = fpga_boot ((unsigned char *) fpgadata, sizeof (fpgadata));
        if (status != 0) {
                /* booting FPGA failed */
#ifndef FPGA_DEBUG
                /* set up serial port with default baudrate */
                (void) get_clocks ();
                gd->baudrate = CONFIG_BAUDRATE;
                serial_init ();
                console_init_f ();
#endif
                printf ("\nFPGA: Booting failed ");
                switch (status) {
                case ERROR_FPGA_PRG_INIT_LOW:
                        printf ("(Timeout: INIT not low after asserting PROGRAM*)\n ");
                        break;
                case ERROR_FPGA_PRG_INIT_HIGH:
                        printf ("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
                        break;
                case ERROR_FPGA_PRG_DONE:
                        printf ("(Timeout: DONE not high after programming FPGA)\n ");
                        break;
                }

                /* display infos on fpgaimage */
                index = 15;
                for (i = 0; i < 4; i++) {
                        len = fpgadata[index];
                        printf ("FPGA: %s\n", &(fpgadata[index + 1]));
                        index += len + 3;
                }
                putc ('\n');
                /* delayed reboot */
                for (i = 20; i > 0; i--) {
                        printf ("Rebooting in %2d seconds \r", i);
                        for (index = 0; index < 1000; index++)
                                udelay (1000);
                }
                putc ('\n');
                do_reset (NULL, 0, 0, NULL);
        }

        /*
         * IRQ 0-15  405GP internally generated; active high; level sensitive
         * IRQ 16    405GP internally generated; active low; level sensitive
         * IRQ 17-24 RESERVED
         * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
         * IRQ 26 (EXT IRQ 1) DUART_A; active high; level sensitive
         * IRQ 27 (EXT IRQ 2) DUART_B; active high; level sensitive
         * IRQ 28 (EXT IRQ 3) unused; active low; level sensitive
         * IRQ 29 (EXT IRQ 4) unused; active low; level sensitive
         * IRQ 30 (EXT IRQ 5) unused; active low; level sensitive
         * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
         */
        mtdcr (uicsr, 0xFFFFFFFF);      /* clear all ints */
        mtdcr (uicer, 0x00000000);      /* disable all ints */
        mtdcr (uiccr, 0x00000000);      /* set all to be non-critical */
        mtdcr (uicpr, 0xFFFFFFB1);      /* set int polarities */
        mtdcr (uictr, 0x10000000);      /* set int trigger levels */
        mtdcr (uicvcr, 0x00000001);     /* set vect base=0,INT0 highest priority */
        mtdcr (uicsr, 0xFFFFFFFF);      /* clear all ints */

        /*
         * EBC Configuration Register: set ready timeout to 100 us
         */
        mtebc (epcr, 0xb8400000);

        return 0;
}


int misc_init_r (void)
{
        unsigned long cntrl0Reg;

        /*
         * Setup UART1 handshaking: use CTS instead of DSR
         */
        cntrl0Reg = mfdcr(cntrl0);
        mtdcr(cntrl0, cntrl0Reg | 0x00001000);

        return (0);
}


/*
 * Check Board Identity:
 */
int checkboard (void)
{
        int index;
        int len;
        char str[64];
        int i = getenv_r ("serial#", str, sizeof (str));

        puts ("Board: ");

        if (i == -1) {
                puts ("### No HW ID - assuming DU405");
        } else {
                puts (str);
        }

        puts ("\nFPGA:  ");

        /* display infos on fpgaimage */
        index = 15;
        for (i = 0; i < 4; i++) {
                len = fpgadata[index];
                printf ("%s ", &(fpgadata[index + 1]));
                index += len + 3;
        }

        putc ('\n');

        /*
         * Reset external DUART via FPGA
         */
        *(volatile unsigned char *) FPGA_MODE_REG = 0xff;       /* reset high active */
        *(volatile unsigned char *) FPGA_MODE_REG = 0x00;       /* low again */

        /*
         * Disable sleep mode in LXT971
         */
        lxt971_no_sleep();

        return 0;
}