common/cmd_fdos.c

   1 /*
   2  * (C) Copyright 2002
   3  * Stäubli Faverges - <www.staubli.com>
   4  * Pierre AUBERT  p.aubert@staubli.com
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  */
  24
  25 /*
  26  * Dos floppy support
  27  */
  28
  29 #include <common.h>
  30 #include <config.h>
  31 #include <command.h>
  32 #include <fdc.h>
  33
  34 /*-----------------------------------------------------------------------------
  35  * do_fdosboot --
  36  *-----------------------------------------------------------------------------
  37  */
  38 int do_fdosboot(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  39 {
  40     char *name;
  41     char *ep;
  42     int size;
  43     int rcode = 0;
  44     char buf [12];
  45     int drive = CFG_FDC_DRIVE_NUMBER;
  46
  47     /* pre-set load_addr */
  48     if ((ep = getenv("loadaddr")) != NULL) {
  49         load_addr = simple_strtoul(ep, NULL, 16);
  50     }
  51
  52     /* pre-set Boot file name */
  53     if ((name = getenv("bootfile")) == NULL) {
  54         name = "uImage";
  55     }
  56
  57     switch (argc) {
  58     case 1:
  59         break;
  60     case 2:
  61         /* only one arg - accept two forms:
  62          * just load address, or just boot file name.
  63          * The latter form must be written "filename" here.
  64          */
  65         if (argv[1][0] == '"') {        /* just boot filename */
  66             name = argv [1];
  67         } else {                        /* load address */
  68             load_addr = simple_strtoul(argv[1], NULL, 16);
  69         }
  70         break;
  71     case 3:
  72         load_addr = simple_strtoul(argv[1], NULL, 16);
  73         name = argv [2];
  74         break;
  75     default:
  76         printf ("Usage:\n%s\n", cmdtp->usage);
  77         break;
  78     }
  79
  80     /* Init physical layer                                                   */
  81     if (!fdc_fdos_init (drive)) {
  82         return (-1);
  83     }
  84
  85     /* Open file                                                             */
  86     if (dos_open (name) < 0) {
  87         printf ("Unable to open %s\n", name);
  88         return 1;
  89     }
  90     if ((size = dos_read (load_addr)) < 0) {
  91         printf ("boot error\n");
  92         return 1;
  93     }
  94     flush_cache (load_addr, size);
  95
  96     sprintf(buf, "%x", size);
  97     setenv("filesize", buf);
  98
  99     printf("Floppy DOS load complete: %d bytes loaded to 0x%lx\n",
 100            size, load_addr);
 101
 102     /* Check if we should attempt an auto-start */
 103     if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 104         char *local_args[2];
 105         extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 106         local_args[0] = argv[0];
 107         local_args[1] = NULL;
 108         printf ("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
 109         rcode = do_bootm (cmdtp, 0, 1, local_args);
 110     }
 111     return rcode;
 112 }
 113
 114 /*-----------------------------------------------------------------------------
 115  * do_fdosls --
 116  *-----------------------------------------------------------------------------
 117  */
 118 int do_fdosls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 119 {
 120     char *path = "";
 121     int drive = CFG_FDC_DRIVE_NUMBER;
 122
 123     switch (argc) {
 124     case 1:
 125         break;
 126     case 2:
 127         path = argv [1];
 128         break;
 129     }
 130
 131     /* Init physical layer                                                   */
 132     if (!fdc_fdos_init (drive)) {
 133         return (-1);
 134     }
 135     /* Open directory                                                        */
 136     if (dos_open (path) < 0) {
 137         printf ("Unable to open %s\n", path);
 138         return 1;
 139     }
 140     return (dos_dir ());
 141 }
 142
 143 U_BOOT_CMD(
 144         fdosboot,       3,      0,      do_fdosboot,
 145         "fdosboot- boot from a dos floppy file\n",
 146         "[loadAddr] [filename]\n"
 147 );
 148
 149 U_BOOT_CMD(
 150         fdosls, 2,      0,      do_fdosls,
 151         "fdosls  - list files in a directory\n",
 152         "[directory]\n"
 153 );