flush_dcache_all() is used in the very end of U-Boot self relocation to write back all copied and then patched code and data to their new location in the very end of available memory space.
Since that has nothing to do with IO (i.e. no external DMA happens here) IOC won't help here and we need to write back data cache contents manually.
Signed-off-by: Alexey Brodkin abrodkin@synopsys.com --- arch/arc/lib/cache.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c index 56988dd..d1fb661 100644 --- a/arch/arc/lib/cache.c +++ b/arch/arc/lib/cache.c @@ -430,13 +430,10 @@ void invalidate_dcache_all(void)
void flush_dcache_all(void) { -#ifdef CONFIG_ISA_ARCV2 - if (!ioc_exists) -#endif - __dc_entire_op(OP_FLUSH); + __dc_entire_op(OP_FLUSH);
#ifdef CONFIG_ISA_ARCV2 - if (slc_exists && !ioc_exists) + if (slc_exists) __slc_entire_op(OP_FLUSH); #endif }