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 * const argv[])
  39 {
  40     char *name;
  41     char *ep;
  42     int size;
  43     int drive = CONFIG_SYS_FDC_DRIVE_NUMBER;
  44
  45     /* pre-set load_addr */
  46     if ((ep = getenv("loadaddr")) != NULL) {
  47         load_addr = simple_strtoul(ep, NULL, 16);
  48     }
  49
  50     /* pre-set Boot file name */
  51     if ((name = getenv("bootfile")) == NULL) {
  52         name = "uImage";
  53     }
  54
  55     switch (argc) {
  56     case 1:
  57         break;
  58     case 2:
  59         /* only one arg - accept two forms:
  60          * just load address, or just boot file name.
  61          * The latter form must be written "filename" here.
  62          */
  63         if (argv[1][0] == '"') {        /* just boot filename */
  64             name = argv [1];
  65         } else {                        /* load address */
  66             load_addr = simple_strtoul(argv[1], NULL, 16);
  67         }
  68         break;
  69     case 3:
  70         load_addr = simple_strtoul(argv[1], NULL, 16);
  71         name = argv [2];
  72         break;
  73     default:
  74         return CMD_RET_USAGE;
  75     }
  76
  77     /* Init physical layer                                                   */
  78     if (!fdc_fdos_init (drive)) {
  79         return (-1);
  80     }
  81
  82     /* Open file                                                             */
  83     if (dos_open (name) < 0) {
  84         printf ("Unable to open %s\n", name);
  85         return 1;
  86     }
  87     if ((size = dos_read (load_addr)) < 0) {
  88         printf ("boot error\n");
  89         return 1;
  90     }
  91     flush_cache (load_addr, size);
  92
  93     setenv_hex("filesize", size);
  94
  95     printf("Floppy DOS load complete: %d bytes loaded to 0x%lx\n",
  96            size, load_addr);
  97
  98     return bootm_maybe_autostart(cmdtp, argv[0]);
  99 }
 100
 101 /*-----------------------------------------------------------------------------
 102  * do_fdosls --
 103  *-----------------------------------------------------------------------------
 104  */
 105 int do_fdosls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 106 {
 107     char *path = "";
 108     int drive = CONFIG_SYS_FDC_DRIVE_NUMBER;
 109
 110     switch (argc) {
 111     case 1:
 112         break;
 113     case 2:
 114         path = argv [1];
 115         break;
 116     }
 117
 118     /* Init physical layer                                                   */
 119     if (!fdc_fdos_init (drive)) {
 120         return (-1);
 121     }
 122     /* Open directory                                                        */
 123     if (dos_open (path) < 0) {
 124         printf ("Unable to open %s\n", path);
 125         return 1;
 126     }
 127     return (dos_dir ());
 128 }
 129
 130 U_BOOT_CMD(
 131         fdosboot,       3,      0,      do_fdosboot,
 132         "boot from a dos floppy file",
 133         "[loadAddr] [filename]"
 134 );
 135
 136 U_BOOT_CMD(
 137         fdosls, 2,      0,      do_fdosls,
 138         "list files in a directory",
 139         "[directory]"
 140 );