cmd_fdos.c
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/*
* (C) Copyright 2002
* Stäubli Faverges - <www.staubli.com>
* Pierre AUBERT p.aubert@staubli.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Dos floppy support
*/
#include <common.h>
#include <config.h>
#include <command.h>
#include <fdc.h>
/*-----------------------------------------------------------------------------
* do_fdosboot --
*-----------------------------------------------------------------------------
*/
int do_fdosboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *name;
char *ep;
int size;
int drive = CONFIG_SYS_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:
return CMD_RET_USAGE;
}
/* 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);
setenv_hex("filesize", size);
printf("Floppy DOS load complete: %d bytes loaded to 0x%lx\n",
size, load_addr);
return bootm_maybe_autostart(cmdtp, argv[0]);
}
/*-----------------------------------------------------------------------------
* do_fdosls --
*-----------------------------------------------------------------------------
*/
int do_fdosls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *path = "";
int drive = CONFIG_SYS_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,
"boot from a dos floppy file",
"[loadAddr] [filename]"
);
U_BOOT_CMD(
fdosls, 2, 0, do_fdosls,
"list files in a directory",
"[directory]"
);