^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * SMP support: Entry point for secondary CPUs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2012 Marvell
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Yehuda Yitschak <yehuday@marvell.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Gregory CLEMENT <gregory.clement@free-electrons.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * This file is licensed under the terms of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * License version 2. This program is licensed "as is" without any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * warranty of any kind, whether express or implied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * This file implements the assembly entry point for secondary CPUs in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * an SMP kernel. The only thing we need to do is to add the CPU to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * the coherency fabric by writing to 2 registers. Currently the base
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * register addresses are hard coded due to the early initialisation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * problems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/assembler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Armada XP specific entry point for secondary CPUs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * We add the CPU to the coherency fabric and then jump to secondary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * startup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) ENTRY(armada_xp_secondary_startup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ARM_BE8(setend be ) @ go BE8 if entered LE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) bl ll_add_cpu_to_smp_group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) bl ll_enable_coherency
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) b secondary_startup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) ENDPROC(armada_xp_secondary_startup)