[U-Boot] ARM v7: Flush icache when executing a program with go
Wolfgang Denk
wd at denx.de
Fri May 17 00:13:50 CEST 2013
Dear Henrik,
In message <1368718669.25965.14.camel at localhost> you wrote:
>
> I do not like having these things arch specific. I implemented it as an
> ARMv7 hook only because there is no general cross-platform u-boot
> function for clearing the icache. I'd much rather have a generic
> function call for invalidating the cache and leave it up to the arches
> to get it implemented where needed.
There is a common, architecture-independent C API that implements
cache flushing/invalidation; please re-read the summary at [1]
[1] http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/158101/focus=158559
> Or maybe just punt it. If you are on an arch with incoherent caches then
> make sure to make use of the cache command to flush caches and maybe
> even disable caches before using go.
The cache commands currently do not support subcommands for flushing
/ invalidating the caches. See again [1].
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 at denx.de
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