From a7a2b3118b410fb3cd3a8363b157c56f4211ee05 Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Mon, 17 Jun 2013 22:29:23 +0200 Subject: ARM: rockchip: add smp bringup code This adds the necessary smp-operations and startup code to use additional cores on Rockchip SoCs. We currently hog the power management unit in the smp code, as it is necessary to control the power to the cpu core and nothing else is currently using it, so a generic implementation can be done later. Signed-off-by: Heiko Stuebner Tested-by: Ulrich Prinz --- arch/arm/mach-rockchip/headsmp.S | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/arm/mach-rockchip/headsmp.S (limited to 'arch/arm/mach-rockchip/headsmp.S') diff --git a/arch/arm/mach-rockchip/headsmp.S b/arch/arm/mach-rockchip/headsmp.S new file mode 100644 index 000000000000..73206e360e31 --- /dev/null +++ b/arch/arm/mach-rockchip/headsmp.S @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2013 MundoReader S.L. + * Author: Heiko Stuebner + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include +#include + +ENTRY(rockchip_secondary_startup) + bl v7_invalidate_l1 + b secondary_startup +ENDPROC(rockchip_secondary_startup) + +ENTRY(rockchip_secondary_trampoline) + ldr pc, 1f +ENDPROC(rockchip_secondary_trampoline) + .globl rockchip_boot_fn +rockchip_boot_fn: +1: .space 4 + +ENTRY(rockchip_secondary_trampoline_end) -- cgit v1.2.3