1*0fdebc5eSThomas Gleixner/* SPDX-License-Identifier: GPL-2.0-only */ 245f5984aSGregory CLEMENT/* 345f5984aSGregory CLEMENT * SMP support: Entry point for secondary CPUs 445f5984aSGregory CLEMENT * 545f5984aSGregory CLEMENT * Copyright (C) 2012 Marvell 645f5984aSGregory CLEMENT * 745f5984aSGregory CLEMENT * Yehuda Yitschak <yehuday@marvell.com> 845f5984aSGregory CLEMENT * Gregory CLEMENT <gregory.clement@free-electrons.com> 945f5984aSGregory CLEMENT * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 1045f5984aSGregory CLEMENT * 1145f5984aSGregory CLEMENT * This file implements the assembly entry point for secondary CPUs in 1245f5984aSGregory CLEMENT * an SMP kernel. The only thing we need to do is to add the CPU to 1345f5984aSGregory CLEMENT * the coherency fabric by writing to 2 registers. Currently the base 1445f5984aSGregory CLEMENT * register addresses are hard coded due to the early initialisation 1545f5984aSGregory CLEMENT * problems. 1645f5984aSGregory CLEMENT */ 1745f5984aSGregory CLEMENT 1845f5984aSGregory CLEMENT#include <linux/linkage.h> 1945f5984aSGregory CLEMENT#include <linux/init.h> 2045f5984aSGregory CLEMENT 21bca028e7SBen Dooks#include <asm/assembler.h> 22bca028e7SBen Dooks 2345f5984aSGregory CLEMENT/* 2445f5984aSGregory CLEMENT * Armada XP specific entry point for secondary CPUs. 2545f5984aSGregory CLEMENT * We add the CPU to the coherency fabric and then jump to secondary 2645f5984aSGregory CLEMENT * startup 2745f5984aSGregory CLEMENT */ 2845f5984aSGregory CLEMENTENTRY(armada_xp_secondary_startup) 29bca028e7SBen Dooks ARM_BE8(setend be ) @ go BE8 if entered LE 30bca028e7SBen Dooks 312e8a5942SGregory CLEMENT bl ll_add_cpu_to_smp_group 322e8a5942SGregory CLEMENT 332e8a5942SGregory CLEMENT bl ll_enable_coherency 342e8a5942SGregory CLEMENT 3545f5984aSGregory CLEMENT b secondary_startup 3645f5984aSGregory CLEMENT 3745f5984aSGregory CLEMENTENDPROC(armada_xp_secondary_startup) 38