linux/arch/arm/mach-berlin/headsmp.S
Antoine Ténart 7b7dfdd2b9 ARM: berlin: add SMP support
Adds SMP support for Berlin SoCs. Secondary CPUs are reset, then
execute the instruction we put in the reset exception register, setting
the pc at the address contained in the software reset address register,
which is the physical address of the Berlin secondary startup.

This implementation avoid using the pen lock mechanism.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
2014-06-16 13:16:44 +02:00

31 lines
744 B
ArmAsm

/*
* Copyright (C) 2014 Marvell Technology Group Ltd.
*
* Antoine Ténart <antoine.tenart@free-electrons.com>
*
* 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>
#include <asm/assembler.h>
ENTRY(berlin_secondary_startup)
ARM_BE8(setend be)
bl v7_invalidate_l1
b secondary_startup
ENDPROC(berlin_secondary_startup)
/*
* If the following instruction is set in the reset exception vector, CPUs
* will fetch the value of the software reset address vector when being
* reset.
*/
.global boot_inst
boot_inst:
ldr pc, [pc, #140]
.align