1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * SMP support: Entry point for secondary CPUs 4 * 5 * Copyright (C) 2012 Marvell 6 * 7 * Yehuda Yitschak <yehuday@marvell.com> 8 * Gregory CLEMENT <gregory.clement@free-electrons.com> 9 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 10 * 11 * This file implements the assembly entry point for secondary CPUs in 12 * an SMP kernel. The only thing we need to do is to add the CPU to 13 * the coherency fabric by writing to 2 registers. Currently the base 14 * register addresses are hard coded due to the early initialisation 15 * problems. 16 */ 17 18 #include <linux/linkage.h> 19 #include <linux/init.h> 20 21 #include <asm/assembler.h> 22 23 /* 24 * Armada XP specific entry point for secondary CPUs. 25 * We add the CPU to the coherency fabric and then jump to secondary 26 * startup 27 */ 28 ENTRY(armada_xp_secondary_startup) 29 ARM_BE8(setend be ) @ go BE8 if entered LE 30 31 bl ll_add_cpu_to_smp_group 32 33 bl ll_enable_coherency 34 35 b secondary_startup 36 37 ENDPROC(armada_xp_secondary_startup) 38