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Diffstat (limited to 'arch/arm/mach-mvebu/headsmp.S')
| -rw-r--r-- | arch/arm/mach-mvebu/headsmp.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/headsmp.S b/arch/arm/mach-mvebu/headsmp.S new file mode 100644 index 0000000000..f05c59dad3 --- /dev/null +++ b/arch/arm/mach-mvebu/headsmp.S @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * SMP support: Entry point for secondary CPUs + * + * Copyright (C) 2012 Marvell + * + * Yehuda Yitschak <yehuday@marvell.com> + * Gregory CLEMENT <gregory.clement@free-electrons.com> + * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> + * + * This file implements the assembly entry point for secondary CPUs in + * an SMP kernel. The only thing we need to do is to add the CPU to + * the coherency fabric by writing to 2 registers. Currently the base + * register addresses are hard coded due to the early initialisation + * problems. + */ + +#include <linux/linkage.h> +#include <linux/init.h> + +#include <asm/assembler.h> + +/* + * Armada XP specific entry point for secondary CPUs. + * We add the CPU to the coherency fabric and then jump to secondary + * startup + */ +ENTRY(armada_xp_secondary_startup) + ARM_BE8(setend be ) @ go BE8 if entered LE + + bl ll_add_cpu_to_smp_group + + bl ll_enable_coherency + + b secondary_startup + +ENDPROC(armada_xp_secondary_startup) |