initial import of openbios--main--1.0--patch-26

git-svn-id: svn://coreboot.org/openbios/openbios-devel@1 f158a5a8-5612-0410-a976-696ce0be7e32

modules/support.fs

@@ -0,0 +1,124 @@
+\ tag: Utility functions
+\ 
+\ deblocker / filesystem support
+\ 
+\ Copyright (C) 2003, 2004 Samuel Rydh
+\ 
+\ See the file "COPYING" for further information about
+\ the copyright and warranty status of this work.
+\ 
+
+dev /packages
+
+\ -------------------------------------------------------------
+\ /packages/disk-label (partition handling)
+\ -------------------------------------------------------------
+
+[IFDEF] CONFIG_DISK_LABEL
+  
+new-device
+  " disk-label" device-name
+  external
+
+  variable part-handlers      \ list with (probe-xt, phandle) elements
+  variable fs-handlers        \ list with (fs-probe-xt, phandle) elements
+  
+  : find-part-handler ( block0 -- phandle | 0 )
+    >r part-handlers
+    begin list-get while
+      ( nextlist dictptr )
+      r@ over @ execute if
+        ( nextlist dictptr )
+        na1+ @ r> rot 2drop exit
+      then
+      drop
+    repeat
+    r> drop 0
+  ;
+
+  : find-filesystem ( ih -- ph | 0 )
+    >r fs-handlers
+    begin list-get while
+      ( nextlist dictptr )
+      r@ over @ execute if
+        ( nextlist dictptr )
+        na1+ @ r> rot 2drop exit
+      then
+      drop
+    repeat
+    r> drop 0
+  ;
+
+  : register-part-handler ( handler-ph -- )
+    dup " probe" rot find-method
+    0= abort" Missing probe method!"
+    ( phandle probe-xt )
+    part-handlers list-add , ,
+  ;
+
+  : register-fs-handler ( handler-ph -- )
+    dup " probe" rot find-method
+    0= abort" Missing probe method!"
+    ( phandle probe-xt )
+    fs-handlers list-add , ,
+  ;
+finish-device
+
+\ ---------------------------------------------------------------------------
+\ methods to register partion and filesystem packages used by disk-label
+\ ---------------------------------------------------------------------------
+
+device-end
+: register-partition-package ( -- )
+  " register-part-handler" " disk-label" $find-package-method ?dup if
+    active-package swap execute
+  else
+    ." [disk-label] internal error" cr
+  then
+;
+
+: register-fs-package ( -- )
+  " register-fs-handler" " disk-label" $find-package-method ?dup if  
+    active-package swap execute
+  else
+    ." [misc-files] internal error" cr
+  then
+;
+
+[THEN]
+device-end
+
+
+\ -------------------------------------------------------------
+\ command line editor (/packages/cmdline)
+\ -------------------------------------------------------------
+
+[IFDEF] CONFIG_CMDLINE
+
+dev /packages
+new-device
+  " cmdline" device-name
+
+  :noname
+    " " [active-package], open-package
+    ?dup if
+      " cmdline" rot $call-method
+    else
+      ." cmdline is missing!" cr
+    then
+    \ cmdline must close itself upon return
+  ;
+
+  :noname
+    [ ['] (lit) , swap , ] to outer-interpreter
+  ; SYSTEM-initializer
+
+  external
+  : prepare 0 to my-self ;
+
+finish-device
+
+[THEN]
+
+
+device-end