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cfi: Add support for strangely endianness broken SoC implementations

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This adds the 'data_swap' parameter to the CFI driver, which enables
swapping of data bytes when writing/programming words to the flash.
Note, that this specifically means that bytes are not swapped when
writing command words to the flash chip.  Unless you are using the SAP
in an LS102x chip to program an attached 16-bit NOR flash, you hopefully
do not need this!

Change-Id: I1e6f7169da36f373c880d1756d9c21c9957acc50
Signed-off-by: Esben Haabendal <esben@haabendal.dk>
Reviewed-on: http://openocd.zylin.com/3109
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
This commit is contained in:
Esben Haabendal
2015-11-27 09:13:36 +01:00
committed by Paul Fertser
parent f906c65fed
commit 12ff09f7f2
3 changed files with 42 additions and 3 deletions
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doc/openocd.texi
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@@ -4819,6 +4819,8 @@ The CFI driver can accept the following optional parameters, in any order:
like AM29LV010 and similar types.
@item @var{x16_as_x8} ... when a 16-bit flash is hooked up to an 8-bit bus.
@item @var{bus_swap} ... when data bytes in a 16-bit flash needs to be swapped.
@item @var{data_swap} ... when data bytes in a 16-bit flash needs to be
swapped when writing data values (ie. not CFI commands).
@end itemize
To configure two adjacent banks of 16 MBytes each, both sixteen bits (two bytes)