Dear Liu Hui-R64343,
In message 2CF7613B9822A943BEF13EF7ACEC5BD114A316@039-SN1MPN1-003.039d.mgd.msft.net you wrote:
As I discovered myself, usage of config.mk is discouraged and it should be removed and it is not accepted anymore for new boards. Instead of that, it is possible to add CONFIG_ options in boards.cfg.
OK, do you know why config.mk is discouraged?
There are seeral reasons, the most prominent being
1) because it's simply not needed in 95% of all cases
2) because it's bad to distribute vital configuration information into several independent files
and
3) because we're preparing the grounds for a Kconfig based setup so we want to have all config options controlled by a single mechanism (board config file).
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de All easy problems have already been solved.