BUG() uses printf which is not available in pbl, so do not use it here.
This becomes necessary when multiple CPU architectures are compiled in.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Drivers currently cannot implement explicit cache handling and rely on
running the same code before and after mmu_initcall() without crashing.
Depending on the chosen config options, the cache functions are not yet
setup and using them early on ends in a null pointer dereference.
The RPi's mailbox driver is such a case; it requires cache handling once
the MMU is fully set up and yet the RPi setup needs to use the driver to
get the memory size before mem_initcall() and hence mmu_initcall().
Fix this by checking the cache_fns pointer before dereferencing it.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some SoCs come up with invalid entries in the data cache. This can
lead to memory corruption when we enable them later, so invalidate
the caches early.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Since recently with MMU_EARLY support it may happen that setup_c
runs with data caches enabled, so we have to make sure the caches
are flushed before we jump to the new binary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The different ARM architectures need different cache functions. This
patch makes them selectable during runtime.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Andre Heider