diff options
Diffstat (limited to 'qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs')
| -rw-r--r-- | qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs b/qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs new file mode 100644 index 000000000..5842b07c9 --- /dev/null +++ b/qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs @@ -0,0 +1,36 @@ +\ ***************************************************************************** +\ * 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 + +9f000000 CONSTANT citrine-flash-addr + +: >citrine-flash citrine-flash-addr + ; +: citrine-flash@ >citrine-flash rb@ ; +: citrine-flash! >citrine-flash rb! ; +: wait-for-citrine-flash-ready BEGIN 0 citrine-flash@ 80 and UNTIL ; +: erase-citrine-flash-block ( offset -- ) + cr dup 8 .r ." Erasing..." + 20 over citrine-flash! d0 swap citrine-flash! wait-for-citrine-flash-ready ; +: write-citrine-flash ( data offset -- ) + over ff = IF 2drop EXIT THEN + 40 over citrine-flash! citrine-flash! wait-for-citrine-flash-ready ; +: write-citrine-flash-block ( addr offset -- ) \ always writes 128kB! + ." Writing..." + 20000 0 DO over i + c@ over i + write-citrine-flash LOOP 2drop + ." Done." ; +: citrine-flash ( addr offset size -- ) + BEGIN dup 0 > WHILE >r dup erase-citrine-flash-block + 2dup write-citrine-flash-block >r 20000 + r> 20000 + r> 20000 - REPEAT + drop 2drop -1 0 citrine-flash! ; + |