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The flush_cache() function in lib/cache.c ignores its arguments and flushes the complete data and instruction caches. Use the invalidate/flush_*cache_range() functions instead to only flush the requested memory region. This patch does not change the current behavior of U-Boot, since the implementation of the invalidate/flush_*cache_range() functions flush the complete data and instruction caches. It is in preparation for CPUs with the necessary functionality for flushing a selectable memory range. Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>