summaryrefslogtreecommitdiffstats
path: root/common/cmd_fdos.c
blob: dc02b3595c2a64035faf7021e7a3013b459c87ee (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/*
 * (C) Copyright 2002
 * Stäubli Faverges - <www.staubli.com>
 * Pierre AUBERT  p.aubert@staubli.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

/*
 * Dos floppy support
 */

#include <common.h>
#include <config.h>
#include <command.h>
#include <fdc.h>

#if (CONFIG_COMMANDS & CFG_CMD_FDOS)

/*-----------------------------------------------------------------------------
 * do_fdosboot --
 *-----------------------------------------------------------------------------
 */
int do_fdosboot(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
    char *name;
    char *ep;
    int size;
    int rcode = 0;
    char buf [12];
    int drive = CFG_FDC_DRIVE_NUMBER;

    /* pre-set load_addr */
    if ((ep = getenv("loadaddr")) != NULL) {
	load_addr = simple_strtoul(ep, NULL, 16);
    }

    /* pre-set Boot file name */
    if ((name = getenv("bootfile")) == NULL) {
	name = "uImage";
    }

    switch (argc) {
    case 1:
	break;
    case 2:
	/* only one arg - accept two forms:
	 * just load address, or just boot file name.
	 * The latter form must be written "filename" here.
	 */
	if (argv[1][0] == '"') {	/* just boot filename */
	    name = argv [1];
	} else {			/* load address	*/
	    load_addr = simple_strtoul(argv[1], NULL, 16);
	}
	break;
    case 3:
	load_addr = simple_strtoul(argv[1], NULL, 16);
	name = argv [2];
	break;
    default:
	printf ("Usage:\n%s\n", cmdtp->usage);
	break;
    }

    /* Init physical layer                                                   */
    if (!fdc_fdos_init (drive)) {
	return (-1);
    }

    /* Open file                                                             */
    if (dos_open (name) < 0) {
	printf ("Unable to open %s\n", name);
	return 1;
    }
    if ((size = dos_read (load_addr)) < 0) {
	printf ("boot error\n");
	return 1;
    }
    flush_cache (load_addr, size);

    sprintf(buf, "%x", size);
    setenv("filesize", buf);

    printf("Floppy DOS load complete: %d bytes loaded to 0x%lx\n",
	   size, load_addr);

    /* Check if we should attempt an auto-start */
    if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
	char *local_args[2];
	extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
	local_args[0] = argv[0];
	local_args[1] = NULL;
	printf ("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
	rcode = do_bootm (cmdtp, 0, 1, local_args);
    }
    return rcode;
}

/*-----------------------------------------------------------------------------
 * do_fdosls --
 *-----------------------------------------------------------------------------
 */
int do_fdosls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
    char *path = "";
    int drive = CFG_FDC_DRIVE_NUMBER;

    switch (argc) {
    case 1:
	break;
    case 2:
	path = argv [1];
	break;
    }

    /* Init physical layer                                                   */
    if (!fdc_fdos_init (drive)) {
	return (-1);
    }
    /* Open directory                                                        */
    if (dos_open (path) < 0) {
	printf ("Unable to open %s\n", path);
	return 1;
    }
    return (dos_dir ());
}

U_BOOT_CMD(
	fdosboot,	3,	0,	do_fdosboot,
	"fdosboot- boot from a dos floppy file\n",
	"[loadAddr] [filename]\n"
);

U_BOOT_CMD(
	fdosls,	2,	0,	do_fdosls,
	"fdosls  - list files in a directory\n",
	"[directory]\n"
);

#endif	/* CONFIG_COMMANDS & CFG_CMD_FDOS */