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cache: Introduce external cache controller system support

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The cache API currently shipped in Zephyr is assuming that the cache
controller is always on-core thus managed at the arch level. This is not
always the case because many SoCs rely on external cache controllers as
a peripheral external to the core (for example PL310 cache controller
and the L2Cxxx family). In some cases you also want a single driver to
control a whole set of cache controllers.

Rework the cache code introducing support for external cache
controllers.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2021-04-28 10:38:27 +02:00 • committed by Carles Cufí
commit e2333269ae
10 changed files with 243 additions and 115 deletions
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drivers/CMakeLists.txt
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@ -56,3 +56,4 @@ add_subdirectory_ifdef(CONFIG_SYS_CLOCK_EXISTS timer)
add_subdirectory_ifdef(CONFIG_NEURAL_NET_ACCEL neural_net)
add_subdirectory_ifdef(CONFIG_PTP_CLOCK ptp_clock)
add_subdirectory_ifdef(CONFIG_EDAC edac)
add_subdirectory_ifdef(CONFIG_CACHE_MANAGEMENT cache)