* 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, 175 insertions, 0 deletions

diff --git a/fs/fdos/fdos.c b/fs/fdos/fdos.c
new file mode 100644
index 0000000..8963f42
--- /dev/null
+++ b/fs/fdos/fdos.c
@@ -0,0 +1,175 @@
+/*
+ * (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
+ */
+
+#include <common.h>
+#include <config.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_FDOS)
+#include <malloc.h>
+#include "dos.h"
+#include "fdos.h"
+
+
+const char *month [] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+
+Fs_t    fs;
+File_t  file;
+
+/*-----------------------------------------------------------------------------
+ * dos_open -- 
+ *-----------------------------------------------------------------------------
+ */
+int dos_open(char *name)
+{
+    int lg;
+    int entry;
+    char *fname;
+    
+    /* We need to suppress the " char around the name                        */
+    if (name [0] == '"') {
+        name ++;
+    }
+    lg = strlen (name);
+    if (name [lg - 1] == '"') {
+        name [lg - 1] = '\0';
+    }
+
+    /* Open file system                                                      */
+    if (fs_init (&fs) < 0) {
+        return -1;
+    }
+
+    /* Init the file descriptor                                              */
+    file.name = name;
+    file.fs = &fs;
+    
+    /* find the subdirectory containing the file                             */
+    if (open_subdir (&file) < 0) {
+        return (-1);
+    }
+
+    fname = basename (name);
+
+    /* if we try to open root directory                                      */
+    if (*fname == '\0') {
+        file.file = file.subdir;
+        return (0);
+    }
+    
+    /* find the file in the subdir                                           */
+    entry = 0;
+    if (vfat_lookup (&file.subdir,
+                     file.fs,
+                     &file.file.dir,
+                     &entry,
+                     0,
+                     fname,
+                     ACCEPT_DIR | ACCEPT_PLAIN | SINGLE | DO_OPEN,
+                     0,
+                     &file.file) != 0) {
+        /* File not found                                                    */
+        printf ("File not found\n");
+        return (-1);
+    }
+
+    return 0;
+}
+
+/*-----------------------------------------------------------------------------
+ * dos_read -- 
+ *-----------------------------------------------------------------------------
+ */
+int dos_read (ulong addr)
+{
+    int read = 0, nb;
+
+    /* Try to boot a directory ?                                             */
+    if (file.file.dir.attr & (ATTR_DIRECTORY | ATTR_VOLUME)) {
+        printf ("Unable to boot %s !!\n", file.name);
+        return (-1);
+    }
+    while (read < file.file.FileSize) {
+        PRINTF ("read_file (%ld)\n", (file.file.FileSize - read));
+        nb = read_file (&fs,
+                        &file.file,
+                        (char *)addr + read,
+                        read,
+                        (file.file.FileSize - read));
+        PRINTF ("read_file -> %d\n", nb);
+        if (nb < 0) {
+            printf ("read error\n");
+            return (-1);
+        }
+        read += nb;
+    }
+    return (read);
+}
+/*-----------------------------------------------------------------------------
+ * dos_dir -- 
+ *-----------------------------------------------------------------------------
+ */
+int dos_dir (void)
+{
+    int entry;
+    Directory_t dir;
+    char *name;
+    
+    
+    if ((file.file.dir.attr & ATTR_DIRECTORY) == 0) {
+        printf ("%s: not a directory !!\n", file.name);
+        return (1);
+    }
+    entry = 0;
+    if ((name = malloc (MAX_VNAMELEN + 1)) == NULL) {
+        PRINTF ("Allcation error\n");
+        return (1);
+    }
+    
+    while (vfat_lookup (&file.file,
+                        file.fs,
+                        &dir,
+                        &entry,
+                        0,
+                        NULL,
+                        ACCEPT_DIR | ACCEPT_PLAIN | MATCH_ANY,
+                        name,
+                        NULL) == 0) {
+        /* Display file info                                                 */
+        printf ("%3.3s %9d %s %02d %04d %02d:%02d:%02d %s\n",
+                (dir.attr & ATTR_DIRECTORY) ? "dir" : "   ",
+                __le32_to_cpu (dir.size),
+                month [DOS_MONTH (&dir) - 1],
+                DOS_DAY (&dir),
+                DOS_YEAR (&dir),
+                DOS_HOUR (&dir),
+                DOS_MINUTE (&dir),
+                DOS_SEC (&dir),
+                name);
+        
+    }
+    free (name);
+    return (0);
+}
+
+#endif