linux/arch/arm/mach-mvebu/headsmp-a9.S
Gregory CLEMENT f5789cbb22 ARM: mvebu: Fix the secondary startup for Cortex A9 SoC
During the secondary startup the SCU was assumed to be in normal
mode. It is not always the case, and especially after a kexec. This
commit adds the needed sequence to put the SCU in normal mode.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1414669184-16785-4-git-send-email-gregory.clement@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-11-22 02:14:20 +00:00

28 lines
734 B
ArmAsm

/*
* SMP support: Entry point for secondary CPUs of Marvell EBU
* Cortex-A9 based SOCs (Armada 375 and Armada 38x).
*
* Copyright (C) 2014 Marvell
*
* Gregory CLEMENT <gregory.clement@free-electrons.com>
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
__CPUINIT
ENTRY(mvebu_cortex_a9_secondary_startup)
ARM_BE8(setend be)
bl v7_invalidate_l1
bl armada_38x_scu_power_up
b secondary_startup
ENDPROC(mvebu_cortex_a9_secondary_startup)