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-rw-r--r--qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs36
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
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+++ b/qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs
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+\ *****************************************************************************
+\ * 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! ;
+