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Annotation of qemu/roms/SLOF/board-js2x/slof/citrine-flash.fs, revision 1.1.1.1

1.1       root        1: \ *****************************************************************************
                      2: \ * Copyright (c) 2004, 2008 IBM Corporation
                      3: \ * All rights reserved.
                      4: \ * This program and the accompanying materials
                      5: \ * are made available under the terms of the BSD License
                      6: \ * which accompanies this distribution, and is available at
                      7: \ * http://www.opensource.org/licenses/bsd-license.php
                      8: \ *
                      9: \ * Contributors:
                     10: \ *     IBM Corporation - initial implementation
                     11: \ ****************************************************************************/
                     12: 
                     13: 
                     14: \ we do all flash accesses as 8-bit
                     15: 
                     16: 9f000000 CONSTANT citrine-flash-addr
                     17: 
                     18: : >citrine-flash  citrine-flash-addr + ;
                     19: : citrine-flash@  >citrine-flash rb@ ;
                     20: : citrine-flash!  >citrine-flash rb! ;
                     21: : wait-for-citrine-flash-ready  BEGIN 0 citrine-flash@ 80 and UNTIL ;
                     22: : erase-citrine-flash-block ( offset -- )
                     23:   cr dup 8 .r ."  Erasing..."
                     24:   20 over citrine-flash! d0 swap citrine-flash! wait-for-citrine-flash-ready ;
                     25: : write-citrine-flash ( data offset -- )
                     26:   over ff = IF 2drop EXIT THEN
                     27:   40 over citrine-flash! citrine-flash! wait-for-citrine-flash-ready ;
                     28: : write-citrine-flash-block ( addr offset -- ) \ always writes 128kB!
                     29:   ."  Writing..."
                     30:   20000 0 DO over i + c@ over i + write-citrine-flash LOOP 2drop
                     31:   ."  Done." ;
                     32: : citrine-flash ( addr offset size -- )
                     33:   BEGIN dup 0 > WHILE >r dup erase-citrine-flash-block
                     34:   2dup write-citrine-flash-block >r 20000 + r> 20000 + r> 20000 - REPEAT
                     35:   drop 2drop -1 0 citrine-flash! ;
                     36: 

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