| Marc Zyngier | 0459ca9 | 2013-01-02 15:34:50 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * PSCI SMP initialisation |
| 3 | * |
| 4 | * Copyright (C) 2013 ARM Ltd. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/of.h> |
| 21 | #include <linux/smp.h> |
| 22 | |
| 23 | #include <asm/psci.h> |
| 24 | |
| 25 | static int __init smp_psci_init_cpu(struct device_node *dn, int cpu) |
| 26 | { |
| 27 | return 0; |
| 28 | } |
| 29 | |
| 30 | static int __init smp_psci_prepare_cpu(int cpu) |
| 31 | { |
| 32 | int err; |
| 33 | |
| 34 | if (!psci_ops.cpu_on) { |
| 35 | pr_err("psci: no cpu_on method, not booting CPU%d\n", cpu); |
| 36 | return -ENODEV; |
| 37 | } |
| 38 | |
| 39 | err = psci_ops.cpu_on(cpu, __pa(secondary_holding_pen)); |
| 40 | if (err) { |
| 41 | pr_err("psci: failed to boot CPU%d (%d)\n", cpu, err); |
| 42 | return err; |
| 43 | } |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | const struct smp_enable_ops smp_psci_ops __initconst = { |
| 49 | .name = "psci", |
| 50 | .init_cpu = smp_psci_init_cpu, |
| 51 | .prepare_cpu = smp_psci_prepare_cpu, |
| 52 | }; |