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authorDavid Brownell <dbrownell@users.sourceforge.net>2010-01-08 16:47:58 -0800
committerDavid Brownell <dbrownell@users.sourceforge.net>2010-01-08 16:47:58 -0800
commit296a011db5833b8a3258a058e6a805cc5ddb2bfe (patch)
tree73340cadbb2cc9eb226e13ec0f8a34136bf7e013 /TODO
parent12c143d5948355b3b54c9c0decc779177b22d5d9 (diff)
NOR: add FIXMEs for writing ones
It can invalidate ECC codes, and in general is not guaranteed to work. (However on some chips it _appears_ to behave.) Just don't do it; don't write in those cases. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
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@@ -209,6 +209,12 @@ https://lists.berlios.de/pipermail/openocd-development/2009-October/011506.html
- ocl
- str9xpec
+- Don't expect writing all-ones to be a safe way to write without
+ changing bit values. Minimally it loses on flash modules with
+ internal ECC, where it may change the ECC.
+ - NOR flash_write_unlock() does that between sectors
+ - there may be other cases too
+
@subsection thelistflashcfi CFI
- finish implementing bus width/chip width handling (suggested by NC)