From dcd468b8f43c5077c42c75b15cf3204e6b6be46c Mon Sep 17 00:00:00 2001 From: York Sun Date: Tue, 6 Jan 2015 13:18:42 -0800 Subject: armv8/fsl-lsch3: Convert flushing L3 to assembly to avoid using stack Flushing L3 cache in CCN-504 requries d-cache to be disabled. Using assembly function to guarantee stack is not used before flushing is completed. Timeout is needed for simualtor on which CCN-504 is not implemented. Return value can be checked for timeout situation. Change bootm.c to disable dcache instead of simply flushing, required by flushing L3. Signed-off-by: York Sun --- arch/arm/cpu/armv8/cache.S | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/cpu/armv8/cache.S') diff --git a/arch/arm/cpu/armv8/cache.S b/arch/arm/cpu/armv8/cache.S index 9c6e8243bb..fa447bce16 100644 --- a/arch/arm/cpu/armv8/cache.S +++ b/arch/arm/cpu/armv8/cache.S @@ -155,3 +155,9 @@ ENTRY(__asm_invalidate_icache_all) isb sy ret ENDPROC(__asm_invalidate_icache_all) + +ENTRY(__asm_flush_l3_cache) + mov x0, #0 /* return status as success */ + ret +ENDPROC(__asm_flush_l3_cache) + .weak __asm_flush_l3_cache -- cgit v1.2.1