* 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

1 files changed, 145 insertions, 0 deletions

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