forked from Minki/linux
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>
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* SMP support for R-Mobile / SH-Mobile - sh73a0 portion
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*
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* Copyright (C) 2010 Magnus Damm
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* Copyright (C) 2010 Takashi Yoshii
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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 as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/smp.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <asm/smp_plat.h>
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#include <asm/smp_twd.h>
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#include "common.h"
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#include "sh73a0.h"
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#define WUPCR IOMEM(0xe6151010)
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#define SRESCR IOMEM(0xe6151018)
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#define PSTR IOMEM(0xe6151040)
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#define SBAR IOMEM(0xe6180020)
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#define APARMBAREA IOMEM(0xe6f10020)
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#define SH73A0_SCU_BASE 0xf0000000
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static int sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
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{
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unsigned int lcpu = cpu_logical_map(cpu);
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if (((__raw_readl(PSTR) >> (4 * lcpu)) & 3) == 3)
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__raw_writel(1 << lcpu, WUPCR); /* wake up */
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else
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__raw_writel(1 << lcpu, SRESCR); /* reset */
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return 0;
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}
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static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
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{
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/* Map the reset vector (in headsmp.S) */
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__raw_writel(0, APARMBAREA); /* 4k */
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__raw_writel(__pa(shmobile_boot_vector), SBAR);
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/* setup sh73a0 specific SCU bits */
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shmobile_scu_base = IOMEM(SH73A0_SCU_BASE);
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shmobile_smp_scu_prepare_cpus(max_cpus);
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}
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const struct smp_operations sh73a0_smp_ops __initconst = {
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.smp_prepare_cpus = sh73a0_smp_prepare_cpus,
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.smp_boot_secondary = sh73a0_boot_secondary,
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#ifdef CONFIG_HOTPLUG_CPU
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.cpu_can_disable = shmobile_smp_cpu_can_disable,
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.cpu_die = shmobile_smp_scu_cpu_die,
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.cpu_kill = shmobile_smp_scu_cpu_kill,
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#endif
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};
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