* Update TRAB auto update code

* Make fatload set filesize environment variable
  fix potential buffer overlow problem

* enable basic / medium / high-end configurations for PPChameleonEVB
  board; fix NAND code

* enable TFTP client code to specify to the server the desired
  timeout value (see RFC-2349)
diff --git a/common/cmd_fdos.c b/common/cmd_fdos.c
index adaddcd..dc02b35 100644
--- a/common/cmd_fdos.c
+++ b/common/cmd_fdos.c
@@ -43,7 +43,7 @@
     char *ep;
     int size;
     int rcode = 0;
-    char buf [10];
+    char buf [12];
     int drive = CFG_FDC_DRIVE_NUMBER;
 
     /* pre-set load_addr */