board/eltec/elppc/eepro100_srom.c

   1 /*
   2  * (C) Copyright 2002 ELTEC Elektronik AG
   3  * Frank Gottschling <fgottschling@eltec.de>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  * Local network srom writing for first time run
  10  */
  11
  12 /* includes */
  13 #include <common.h>
  14 #include <pci.h>
  15 #include <net.h>
  16 #include "srom.h"
  17
  18 extern int eepro100_write_eeprom (struct eth_device *dev,
  19                                   int location, int addr_len,
  20                                   unsigned short data);
  21
  22 /*----------------------------------------------------------------------------*/
  23
  24 unsigned short eepro100_srom_checksum (unsigned short *sromdata)
  25 {
  26         unsigned short sum = 0;
  27         unsigned int i;
  28
  29         for (i = 0; i < (EE_SIZE - 1); i++) {
  30                 sum += sromdata[i];
  31         }
  32         return (EE_CHECKSUM - sum);
  33 }
  34
  35 /*----------------------------------------------------------------------------*/
  36
  37 int eepro100_srom_store (unsigned short *source)
  38 {
  39         int count;
  40         struct eth_device onboard_dev;
  41
  42         /* get onboard network iobase */
  43         pci_read_config_dword (PCI_BDF (0, 0x10, 0), PCI_BASE_ADDRESS_0,
  44                                (unsigned int *) &onboard_dev.iobase);
  45         onboard_dev.iobase &= ~0xf;
  46
  47         source[63] = eepro100_srom_checksum (source);
  48
  49         for (count = 0; count < EE_SIZE; count++) {
  50                 if (eepro100_write_eeprom ((struct eth_device *) &onboard_dev,
  51                                            count, EE_ADDR_BITS,
  52                                            SROM_SHORT (source)) == -1) {
  53                         return -1;
  54                 }
  55                 source++;
  56         }
  57         return 0;
  58 }
  59
  60 /*----------------------------------------------------------------------------*/
  61
  62 #ifdef EEPRO100_SROM_CHECK
  63
  64 extern int read_eeprom (struct eth_device *dev, int location, int addr_len);
  65
  66 void eepro100_srom_load (unsigned short *destination)
  67 {
  68         int count;
  69         struct eth_device onboard_dev;
  70
  71 #ifdef DEBUG
  72         int lr = 0;
  73
  74         printf ("eepro100_srom_download:\n");
  75 #endif
  76
  77         /* get onboard network iobase */
  78         pci_read_config_dword (PCI_BDF (0, 0x10, 0), PCI_BASE_ADDRESS_0,
  79                                &onboard_dev.iobase);
  80         onboard_dev.iobase &= ~0xf;
  81
  82         memset (destination, 0x65, 128);
  83
  84         for (count = 0; count < 0x40; count++) {
  85                 *destination++ = read_eeprom ((struct eth_device *) &onboard_dev,
  86                                               count, EE_ADDR_BITS);
  87 #ifdef DEBUG
  88                 printf ("%04x ", *(destination - 1));
  89                 if (lr++ == 7) {
  90                         printf ("\n");
  91                         lr = 0;
  92                 }
  93 #endif
  94         }
  95 }
  96 #endif /* EEPRO100_SROM_CHECK */
  97
  98 /*----------------------------------------------------------------------------*/