board/hymod/fetch.c

   1 /*
   2  * (C) Copyright 2001
   3  * Murray Jensen, CSIRO-MIT, <Murray.Jensen@csiro.au>
   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 <net.h>
  26
  27 /* imports from input.c */
  28 extern int hymod_get_ethaddr (void);
  29
  30 int
  31 fetch_and_parse (char *fn, ulong addr, int (*cback)(uchar *, uchar *))
  32 {
  33         char *ethaddr;
  34         uchar *fp, *efp;
  35         int rc, count = 0;
  36
  37         while ((ethaddr = getenv ("ethaddr")) == NULL || *ethaddr == '\0') {
  38
  39                 printf ("*** Ethernet address is%s not set\n",
  40                         count == 0 ? "" : " STILL");
  41
  42                 if ((rc = hymod_get_ethaddr ()) < 0) {
  43                         if (rc == -1)
  44                                 puts ("\n*** interrupted!");
  45                         else
  46                                 puts ("\n*** timeout!");
  47                         printf (" - fetch of '%s' aborted\n", fn);
  48                         return (0);
  49                 }
  50
  51                 count++;
  52         }
  53
  54         copy_filename (BootFile, fn, sizeof (BootFile));
  55         load_addr = addr;
  56         NetBootFileXferSize = 0;
  57
  58         if (NetLoop (TFTP) == 0) {
  59                 printf ("tftp transfer of file '%s' failed\n", fn);
  60                 return (0);
  61         }
  62
  63         if (NetBootFileXferSize == 0) {
  64                 printf ("can't determine size of file '%s'\n", fn);
  65                 return (0);
  66         }
  67
  68         fp = (uchar *)load_addr;
  69         efp = fp + NetBootFileXferSize;
  70
  71         do {
  72                 uchar *name, *value;
  73
  74                 if (*fp == '#' || *fp == '\n') {
  75                         /* skip this line */
  76                         while (fp < efp && *fp++ != '\n')
  77                                 ;
  78                         continue;
  79                 }
  80
  81                 name = fp;
  82
  83                 while (fp < efp && *fp != '=' && *fp != '\n')
  84                         fp++;
  85                 if (fp >= efp)
  86                         break;
  87                 if (*fp == '\n') {
  88                         fp++;
  89                         continue;
  90                 }
  91                 *fp++ = '\0';
  92
  93                 value = fp;
  94
  95                 while (fp < efp && *fp != '\n')
  96                         fp++;
  97                 if (fp[-1] == '\r')
  98                         fp[-1] = '\0';
  99                 *fp++ = '\0';   /* ok if we go off the end here */
 100
 101                 if ((*cback)(name, value) == 0)
 102                         return (0);
 103
 104         } while (fp < efp);
 105
 106         return (1);
 107 }