75305275a7
These smp_operations structures are not over-written, so add "const" qualifier and replace __initdata with __initconst. Also, add "static" where it is possible. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> # qcom part Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Wei Xu <xuwei5@hisilicon.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
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* linux/arch/arm/mach-vexpress/platsmp.c
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*
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* Copyright (C) 2002 ARM Ltd.
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/smp.h>
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#include <linux/io.h>
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#include <linux/of_address.h>
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#include <linux/vexpress.h>
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#include <asm/mcpm.h>
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#include <asm/smp_scu.h>
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#include <asm/mach/map.h>
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#include <plat/platsmp.h>
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#include "core.h"
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bool __init vexpress_smp_init_ops(void)
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{
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#ifdef CONFIG_MCPM
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/*
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* The best way to detect a multi-cluster configuration at the moment
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* is to look for the presence of a CCI in the system.
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* Override the default vexpress_smp_ops if so.
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*/
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struct device_node *node;
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node = of_find_compatible_node(NULL, NULL, "arm,cci-400");
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if (node && of_device_is_available(node)) {
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mcpm_smp_set_ops();
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return true;
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}
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#endif
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return false;
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}
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static const struct of_device_id vexpress_smp_dt_scu_match[] __initconst = {
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{ .compatible = "arm,cortex-a5-scu", },
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{ .compatible = "arm,cortex-a9-scu", },
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{}
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};
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static void __init vexpress_smp_dt_prepare_cpus(unsigned int max_cpus)
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{
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struct device_node *scu = of_find_matching_node(NULL,
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vexpress_smp_dt_scu_match);
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if (scu)
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scu_enable(of_iomap(scu, 0));
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/*
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* Write the address of secondary startup into the
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* system-wide flags register. The boot monitor waits
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* until it receives a soft interrupt, and then the
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* secondary CPU branches to this address.
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*/
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vexpress_flags_set(virt_to_phys(versatile_secondary_startup));
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}
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const struct smp_operations vexpress_smp_dt_ops __initconst = {
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.smp_prepare_cpus = vexpress_smp_dt_prepare_cpus,
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.smp_secondary_init = versatile_secondary_init,
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.smp_boot_secondary = versatile_boot_secondary,
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#ifdef CONFIG_HOTPLUG_CPU
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.cpu_die = vexpress_cpu_die,
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#endif
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};
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