board/eltec/elppc/eepro100_srom.c

   1 /*
   2  * (C) Copyright 2002 ELTEC Elektronik AG
   3  * Frank Gottschling <fgottschling@eltec.de>
   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 /*
  25  * Local network srom writing for first time run
  26  */
  27
  28 /* includes */
  29 #include <common.h>
  30 #include <pci.h>
  31 #include <net.h>
  32 #include "srom.h"
  33
  34 extern int eepro100_write_eeprom (struct eth_device* dev,
  35                     int location, int addr_len, unsigned short data);
  36
  37 /*----------------------------------------------------------------------------*/
  38
  39 unsigned short eepro100_srom_checksum (unsigned short *sromdata)
  40 {
  41     unsigned short sum = 0;
  42     unsigned int i;
  43
  44     for (i = 0; i < (EE_SIZE-1); i++)
  45     {
  46         sum += sromdata[i];
  47     }
  48     return (EE_CHECKSUM - sum);
  49 }
  50
  51 /*----------------------------------------------------------------------------*/
  52
  53 int eepro100_srom_store (unsigned short *source)
  54 {
  55     int count;
  56     struct eth_device onboard_dev;
  57
  58     /* get onboard network iobase */
  59     pci_read_config_dword(PCI_BDF(0,0x10,0), PCI_BASE_ADDRESS_0,
  60                  &onboard_dev.iobase);
  61     onboard_dev.iobase &= ~0xf;
  62
  63     source[63] = eepro100_srom_checksum (source);
  64
  65     for (count=0; count < EE_SIZE; count++)
  66     {
  67     if ( eepro100_write_eeprom ((struct eth_device*)&onboard_dev,
  68              count, EE_ADDR_BITS, SROM_SHORT(source)) == -1 )
  69         return -1;
  70     source++;
  71     }
  72     return 0;
  73 }
  74
  75 /*----------------------------------------------------------------------------*/
  76
  77 #ifdef EEPRO100_SROM_CHECK
  78
  79 extern int read_eeprom (struct eth_device* dev, int location, int addr_len);
  80
  81 void eepro100_srom_load (unsigned short *destination)
  82 {
  83     int count;
  84     struct eth_device onboard_dev;
  85 #ifdef DEBUG
  86     int lr = 0;
  87     printf ("eepro100_srom_download:\n");
  88 #endif
  89
  90     /* get onboard network iobase */
  91     pci_read_config_dword(PCI_BDF(0,0x10,0), PCI_BASE_ADDRESS_0,
  92                  &onboard_dev.iobase);
  93     onboard_dev.iobase &= ~0xf;
  94
  95     memset (destination, 0x65, 128);
  96
  97     for (count=0; count < 0x40; count++)
  98     {
  99         *destination++ = read_eeprom (struct eth_device*)&onboard_dev,
 100                  count, EE_ADDR_BITS);
 101 #ifdef DEBUG
 102         printf ("%04x ", *(destination - 1));
 103         if (lr++ == 7)
 104         {
 105             printf("\n");
 106             lr = 0;
 107         }
 108 #endif
 109     }
 110 }
 111 #endif /* EEPRO100_SROM_CHECK */
 112
 113 /*----------------------------------------------------------------------------*/