mirror of https://gitee.com/openkylin/linux.git
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
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/*
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* PSCI SMP initialisation
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*
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* Copyright (C) 2013 ARM Ltd.
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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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* 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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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/smp.h>
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#include <asm/psci.h>
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static int __init smp_psci_init_cpu(struct device_node *dn, int cpu)
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{
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return 0;
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}
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static int __init smp_psci_prepare_cpu(int cpu)
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{
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int err;
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if (!psci_ops.cpu_on) {
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pr_err("psci: no cpu_on method, not booting CPU%d\n", cpu);
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return -ENODEV;
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}
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err = psci_ops.cpu_on(cpu, __pa(secondary_holding_pen));
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if (err) {
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pr_err("psci: failed to boot CPU%d (%d)\n", cpu, err);
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return err;
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}
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return 0;
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}
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const struct smp_enable_ops smp_psci_ops __initconst = {
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.name = "psci",
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.init_cpu = smp_psci_init_cpu,
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.prepare_cpu = smp_psci_prepare_cpu,
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};
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