eepro100_srom.c

gumstiz u-boot loader in linux

/*
 * (C) Copyright 2002 ELTEC Elektronik AG
 * Frank Gottschling <[e-mail]>
 *
 * 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
 */

/*
 * Local network srom writing for first time run
 */

/* includes */
#include <common.h>
#include <pci.h>
#include <net.h>
#include "srom.h"

extern int eepro100_write_eeprom (struct eth_device* dev,
		    int location, int addr_len, unsigned short data);

/*----------------------------------------------------------------------------*/

unsigned short eepro100_srom_checksum (unsigned short *sromdata)
{
    unsigned short sum = 0;
    unsigned int i;

    for (i = 0; i < (EE_SIZE-1); i++)
    {
	sum += sromdata[i];
    }
    return (EE_CHECKSUM - sum);
}

/*----------------------------------------------------------------------------*/

int eepro100_srom_store (unsigned short *source)
{
    int count;
    struct eth_device onboard_dev;

    /* get onboard network iobase */
    pci_read_config_dword(PCI_BDF(0,0x10,0), PCI_BASE_ADDRESS_0,
		 (unsigned int *)&onboard_dev.iobase);
    onboard_dev.iobase &= ~0xf;

    source[63] = eepro100_srom_checksum (source);

    for (count=0; count < EE_SIZE; count++)
    {
    if ( eepro100_write_eeprom ((struct eth_device*)&onboard_dev,
	     count, EE_ADDR_BITS, SROM_SHORT(source)) == -1 )
	return -1;
    source++;
    }
    return 0;
}

/*----------------------------------------------------------------------------*/

#ifdef EEPRO100_SROM_CHECK

extern int read_eeprom (struct eth_device* dev, int location, int addr_len);

void eepro100_srom_load (unsigned short *destination)
{
    int count;
    struct eth_device onboard_dev;
#ifdef DEBUG
    int lr = 0;
    printf ("eepro100_srom_download:\n");
#endif

    /* get onboard network iobase */
    pci_read_config_dword(PCI_BDF(0,0x10,0), PCI_BASE_ADDRESS_0,
		 &onboard_dev.iobase);
    onboard_dev.iobase &= ~0xf;

    memset (destination, 0x65, 128);

    for (count=0; count < 0x40; count++)
    {
	*destination++ = read_eeprom (struct eth_device*)&onboard_dev,
		 count, EE_ADDR_BITS);
#ifdef DEBUG
	printf ("%04x ", *(destination - 1));
	if (lr++ == 7)
	{
	    printf("\n");
	    lr = 0;
	}
#endif
    }
}
#endif /* EEPRO100_SROM_CHECK */

/*----------------------------------------------------------------------------*/