psci.c (00ef54bb97389bfe8894272f48496f4191aae946) psci.c (cd1aebf5277a3a154a9e4c0ea4b3acabb62e5cab)
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License version 2 as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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15
16#define pr_fmt(fmt) "psci: " fmt
17
18#include <linux/init.h>
19#include <linux/of.h>
20#include <linux/smp.h>
21
22#include <asm/compiler.h>
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License version 2 as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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15
16#define pr_fmt(fmt) "psci: " fmt
17
18#include <linux/init.h>
19#include <linux/of.h>
20#include <linux/smp.h>
21
22#include <asm/compiler.h>
23#include <asm/cpu_ops.h>
23#include <asm/errno.h>
24#include <asm/psci.h>
25#include <asm/smp_plat.h>
26
27#define PSCI_POWER_STATE_TYPE_STANDBY 0
28#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
29
30struct psci_power_state {

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226
227out_put_node:
228 of_node_put(np);
229 return err;
230}
231
232#ifdef CONFIG_SMP
233
24#include <asm/errno.h>
25#include <asm/psci.h>
26#include <asm/smp_plat.h>
27
28#define PSCI_POWER_STATE_TYPE_STANDBY 0
29#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
30
31struct psci_power_state {

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227
228out_put_node:
229 of_node_put(np);
230 return err;
231}
232
233#ifdef CONFIG_SMP
234
234static int __init smp_psci_init_cpu(struct device_node *dn, int cpu)
235static int __init cpu_psci_cpu_init(struct device_node *dn, unsigned int cpu)
235{
236 return 0;
237}
238
236{
237 return 0;
238}
239
239static int __init smp_psci_prepare_cpu(int cpu)
240static int __init cpu_psci_cpu_prepare(unsigned int cpu)
240{
241 int err;
242
243 if (!psci_ops.cpu_on) {
244 pr_err("no cpu_on method, not booting CPU%d\n", cpu);
245 return -ENODEV;
246 }
247
248 err = psci_ops.cpu_on(cpu_logical_map(cpu), __pa(secondary_holding_pen));
249 if (err) {
250 pr_err("failed to boot CPU%d (%d)\n", cpu, err);
251 return err;
252 }
253
254 return 0;
255}
256
241{
242 int err;
243
244 if (!psci_ops.cpu_on) {
245 pr_err("no cpu_on method, not booting CPU%d\n", cpu);
246 return -ENODEV;
247 }
248
249 err = psci_ops.cpu_on(cpu_logical_map(cpu), __pa(secondary_holding_pen));
250 if (err) {
251 pr_err("failed to boot CPU%d (%d)\n", cpu, err);
252 return err;
253 }
254
255 return 0;
256}
257
257const struct smp_enable_ops smp_psci_ops __initconst = {
258const struct cpu_operations cpu_psci_ops = {
258 .name = "psci",
259 .name = "psci",
259 .init_cpu = smp_psci_init_cpu,
260 .prepare_cpu = smp_psci_prepare_cpu,
260 .cpu_init = cpu_psci_cpu_init,
261 .cpu_prepare = cpu_psci_cpu_prepare,
261};
262
263#endif
262};
263
264#endif