| /* |
| * Copyright (C) 2002 ARM Ltd. |
| * All Rights Reserved |
| * Copyright (c) 2010, 2012-2013, NVIDIA Corporation. 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/clk/tegra.h> |
| #include <linux/kernel.h> |
| #include <linux/smp.h> |
| |
| #include <soc/tegra/fuse.h> |
| |
| #include <asm/smp_plat.h> |
| |
| #include "sleep.h" |
| |
| static void (*tegra_hotplug_shutdown)(void); |
| |
| int tegra_cpu_kill(unsigned cpu) |
| { |
| cpu = cpu_logical_map(cpu); |
| |
| /* Clock gate the CPU */ |
| tegra_wait_cpu_in_reset(cpu); |
| tegra_disable_cpu_clock(cpu); |
| |
| return 1; |
| } |
| |
| /* |
| * platform-specific code to shutdown a CPU |
| * |
| * Called with IRQs disabled |
| */ |
| void __ref tegra_cpu_die(unsigned int cpu) |
| { |
| /* Clean L1 data cache */ |
| tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS); |
| |
| /* Shut down the current CPU. */ |
| tegra_hotplug_shutdown(); |
| |
| /* Should never return here. */ |
| BUG(); |
| } |
| |
| void __init tegra_hotplug_init(void) |
| { |
| if (!IS_ENABLED(CONFIG_HOTPLUG_CPU)) |
| return; |
| |
| if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_get_chip_id() == TEGRA20) |
| tegra_hotplug_shutdown = tegra20_hotplug_shutdown; |
| if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_get_chip_id() == TEGRA30) |
| tegra_hotplug_shutdown = tegra30_hotplug_shutdown; |
| if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_get_chip_id() == TEGRA114) |
| tegra_hotplug_shutdown = tegra30_hotplug_shutdown; |
| if (IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) && tegra_get_chip_id() == TEGRA124) |
| tegra_hotplug_shutdown = tegra30_hotplug_shutdown; |
| } |