From 13f3f84bae5e97fb6b58d7c858824604c52d70a0 Mon Sep 17 00:00:00 2001 From: Masayuki Ishikawa Date: Mon, 16 Nov 2020 15:17:18 +0900 Subject: [PATCH] arch: armv7-a: Remove unnecessary d-cache operation in arm_cpustart.c Summary: - Remove unnecessary d-cache operation to make boot fast Impact: - armv7-a SMP only Testing: - Tested with sabre-6quad:smp (QEMU and dev board) Signed-off-by: Masayuki Ishikawa --- arch/arm/src/armv7-a/arm_cpustart.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/arm/src/armv7-a/arm_cpustart.c b/arch/arm/src/armv7-a/arm_cpustart.c index ca883d56de9..de6b037bf56 100644 --- a/arch/arm/src/armv7-a/arm_cpustart.c +++ b/arch/arm/src/armv7-a/arm_cpustart.c @@ -171,10 +171,6 @@ int up_cpu_start(int cpu) sched_note_cpu_start(this_task(), cpu); #endif - /* Make the content of CPU0 L1 cache has been written to coherent L2 */ - - cp15_clean_dcache(CONFIG_RAM_START, CONFIG_RAM_END - 1); - /* Execute SGI1 */ return arm_cpu_sgi(GIC_IRQ_SGI1, (1 << cpu));