1 files changed, 43 insertions, 0 deletions
diff --git a/src/roms/SLOF/board-js2x/slof/flash.fs b/src/roms/SLOF/board-js2x/slof/flash.fs
new file mode 100644
index 0000000..110f5c8
--- /dev/null
+++ b/src/roms/SLOF/board-js2x/slof/flash.fs
@@ -0,0 +1,43 @@
+\ *****************************************************************************
+\ * Copyright (c) 2004, 2008 IBM Corporation
+\ * All rights reserved.
+\ * This program and the accompanying materials
+\ * are made available under the terms of the BSD License
+\ * which accompanies this distribution, and is available at
+\ * http://www.opensource.org/licenses/bsd-license.php
+\ *
+\ * Contributors:
+\ *     IBM Corporation - initial implementation
+\ ****************************************************************************/
+
+
+\ we do all flash accesses as 8-bit
+
+ff000000 CONSTANT flash-addr
+
+: >flash  flash-addr + ;
+: flash@  >flash rb@ ;
+: flash!  >flash rb! ;
+: wait-for-flash-ready  BEGIN 0 flash@ 80 and UNTIL ;
+: erase-flash-block ( offset -- )
+  cr dup 8 .r ."  Erasing..."
+  20 over flash! d0 swap flash! wait-for-flash-ready ;
+: write-flash ( data offset -- )
+  40 over flash! flash! wait-for-flash-ready ;
+: write-flash-buffer ( addr offset -- )
+  e8 over flash!  wait-for-flash-ready  1f over flash!
+  20 0 DO over i + c@ over i + flash! LOOP
+  d0 over flash! wait-for-flash-ready 2drop ;
+: write-flash-block ( addr offset -- ) \ always writes 128kB!
+  ."  Writing..."
+  20000 0 DO over i + over i + write-flash-buffer 20 +LOOP 2drop
+  ."  Done." ;
+: flash ( addr offset size -- )
+  BEGIN dup 0 > WHILE >r dup erase-flash-block 2dup write-flash-block
+  >r 20000 + r> 20000 + r> 20000 - REPEAT drop 2drop -1 0 flash! ;
+
+: flash-it  get-load-base 0 e0000  flash ;
+: flash4    get-load-base 0 400000 flash ;
+
+\ for update-flash
+: flash-image-size  ( addr -- size )  30 + rx@  ;