Boot ROM on Meson needs some pages to be read/written in a special mode:
384 byte ECC mode (so called "short" by Amlogic) and with scrambling
enabled. Such pages are located on the chip in the following way (for
example):
[ p0 ][ p1 ][ p2 ][ p3 ][ p4 ][ p5 ][ p6 ][ p7 ] ... [ pN ]
^ ^ ^ ^
pX is page number "X". "^" means "special" page used by boot ROM - e.g.
every 2nd page in the range of [0, 7]. Step (2 here) and last page in
range is read from the device tree.
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/r/20240826131710.29746-4-avkrasnov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
The first patch is by Weizhao Ouyang and avoids sf probe crashes.
The second patch is by Arseniy Krasnov and adds basic support for Amlogic
Meson NAND controller on AXG.
The following four patches are by Alexander Dahl and apply some fixes to
drivers/mtd/nand/raw/ and port some changes applied in Linux.
The following patch is by Bruce Suen and adds support for XTX SPINAND.
Finally, the last patch is again by Arseniy Krasnov and adds access to
OTP region, supporting info, dump, write and lock operations.
