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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/SLOF/board-js2x/slof/flash.fs
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (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.fs43
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@ ;