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arc/cache: really do flush_dcache_all() even if IOC exists 

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>
This commit is contained in:
Alexey Brodkin 2016-04-16 15:28:30 +03:00
parent ee8b25fa35
commit 2a8382c6fe
1 changed files with 2 additions and 5 deletions
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7
arch/arc/lib/cache.c
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@ -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
}