nios2: rework cache
authorLey Foon Tan <lftan@altera.com>
Fri, 24 Apr 2015 06:18:55 +0000 (14:18 +0800)
committerLey Foon Tan <lftan@altera.com>
Fri, 24 Apr 2015 06:49:53 +0000 (14:49 +0800)
- flush dcache before flush instruction cache
- remork update_mmu_cache and flush_dcache_page
- add shmparam.h

Signed-off-by: Ley Foon Tan <lftan@altera.com>

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