[U-Boot] [PATCH 1/2] armv8: caches: Disable dcache after flush

[Michal Simek]

From: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>

Always disable dcache after the flush operation
The following sequence is advisable while disabling d-cache:
1. disable_dcache() - flushes and disables d-cache
2. invalidate_dcache_all() - invalid any entry that came to the cache
   in the short period after the cache was flushed but before the
   cache got disabled

Signed-off-by: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 arch/arm/cpu/armv8/cache_v8.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c
index c5ec5297cd39..2a0492fbef52 100644
--- a/arch/arm/cpu/armv8/cache_v8.c
+++ b/arch/arm/cpu/armv8/cache_v8.c
@@ -128,10 +128,10 @@ void dcache_disable(void)
 	if (!(sctlr & CR_C))
 		return;
 
-	set_sctlr(sctlr & ~(CR_C|CR_M));
-
 	flush_dcache_all();
 	__asm_invalidate_tlb_all();
+
+	set_sctlr(sctlr & ~(CR_C|CR_M));
 }
 
 int dcache_status(void)
-- 
2.3.5