From 2a8382c6fe7ddf0e15791b3ffa5f390a674a212b Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <abrodkin@synopsys.com>
Date: Sat, 16 Apr 2016 15:28:30 +0300
Subject: [PATCH] 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>
---
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 56988dda18..d1fb661537 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
}
--
2.39.5