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author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/SLOF/board-js2x/slof/flash.fs | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/SLOF/board-js2x/slof/flash.fs')
-rw-r--r-- | qemu/roms/SLOF/board-js2x/slof/flash.fs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/board-js2x/slof/flash.fs b/qemu/roms/SLOF/board-js2x/slof/flash.fs new file mode 100644 index 000000000..110f5c86b --- /dev/null +++ b/qemu/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@ ; |