tree bf2c39420dd77f91f22083bdd912da76cf7e1439
parent 1497e32950cb64b5a948c1f016dda04913c09376
author Alexey Brodkin <abrodkin@synopsys.com> 1427449649 +0300
committer Alexey Brodkin <abrodkin@synopsys.com> 1428043669 +0300

arc: cache - build invalidate_icache_all() and invalidate_dcache_all()
always

Make both invalidate_icache_all() and invalidate_dcache_all() available
even if U-Boot is configured with CONFIG_SYS_DCACHE_OFF and/or
CONFIG_SYS_ICACHE_OFF.

This is useful because configuration of U-Boot may not match actual
hardware features. Real board may have cache(s) but for some reason we
may want to run U-Boot with cache(s) disabled (for example if some
peripherals work improperly with existing drivers if data cache is
enabled). So board may start with cache(s) enabled (that's the case for
ARC cores with built-in caches) but early in U-Boot we disable cache(s)
and make sure all contents of data cache gets flushed in RAM.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>