linux/arch/arm/mach-oxnas/headsmp.S
Neil Armstrong af76e806b5 ARM: oxnas: Add OX820 SMP support
The Oxford Semiconductor OX820 is a ARM11MPcore based SoC sharing some
features with the OX810 earlier SoC.
This patch adds the core to wake up the second core.

Clarifications about Copyrights dates :
- hotplug.c was taken from an old versatile code by Ma Haijun and left verbatim
- headsmp.S was taken from an old versatile code and adapted by Ma Haijun
- platsmp.c is a mix from versatile code, Ma Haijun code and my code for DT
Hence the 2002/2003 ARM Coryrights and 2013 Ma Haijun Copyrights.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2016-11-23 09:53:54 +01:00

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ArmAsm

/*
* Copyright (C) 2013 Ma Haijun <mahaijuns@gmail.com>
* Copyright (c) 2003 ARM Limited
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <linux/init.h>
__INIT
/*
* OX820 specific entry point for secondary CPUs.
*/
ENTRY(ox820_secondary_startup)
mov r4, #0
/* invalidate both caches and branch target cache */
mcr p15, 0, r4, c7, c7, 0
/*
* we've been released from the holding pen: secondary_stack
* should now contain the SVC stack for this core
*/
b secondary_startup