NOR FLASH: only erase/unlock whole sectors

Much to my surprise, I observed a "flash erase_address ..."
command erasing data which I said should not be erased.

The issue turns out to be generic NOR flash code which was
silently, and rather dangerously, morphing partial-sector
references into unrequested whole-sector ones.

This patch removes that low-level morphing.  If desired, it
can and should be done in higher level code.  (We might need
to fix some stuff in the GDB server code.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 498797b1..2d01f004 100644
--- a/NEWS
+++ b/NEWS
@@ -39,6 +39,8 @@ Flash Layer:
 		- <bank_name>: reference the bank with its defined name
 		- <driver_name>[.N]: reference the driver's Nth bank
 	New 'nand verify' command to check bank against an image file.
+	The "flash erase_address" command now rejects partial sectors;
+		previously it would silently erase extra data.
 
 Board, Target, and Interface Configuration Scripts:
 	ARM9