* Patch by Daniel Engström, 13 Nov 2002:
Add support for i386 architecture and AMD SC520 board
* Patch by Pierre Aubert, 12 Nov 2002:
Add support for DOS filesystem and booting from DOS floppy disk
diff --git a/common/cmd_fdos.c b/common/cmd_fdos.c
new file mode 100644
index 0000000..763f418
--- /dev/null
+++ b/common/cmd_fdos.c
@@ -0,0 +1,145 @@
+/*
+ * (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 [10];
+ 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 = "pImage";
+ }
+
+ 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 ());
+}
+
+#endif
