forked from luck/tmp_suning_uos_patched
a9a193ffe5
With the (re)introduction of cpu_logical_map in arm64 we switch to the use of MPIDR values to identify CPUs. Update the psci code to do that. Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
|
|
* PSCI SMP initialisation
|
|
*
|
|
* Copyright (C) 2013 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/of.h>
|
|
#include <linux/smp.h>
|
|
|
|
#include <asm/psci.h>
|
|
#include <asm/smp_plat.h>
|
|
|
|
static int __init smp_psci_init_cpu(struct device_node *dn, int cpu)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int __init smp_psci_prepare_cpu(int cpu)
|
|
{
|
|
int err;
|
|
|
|
if (!psci_ops.cpu_on) {
|
|
pr_err("psci: no cpu_on method, not booting CPU%d\n", cpu);
|
|
return -ENODEV;
|
|
}
|
|
|
|
err = psci_ops.cpu_on(cpu_logical_map(cpu), __pa(secondary_holding_pen));
|
|
if (err) {
|
|
pr_err("psci: failed to boot CPU%d (%d)\n", cpu, err);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct smp_enable_ops smp_psci_ops __initconst = {
|
|
.name = "psci",
|
|
.init_cpu = smp_psci_init_cpu,
|
|
.prepare_cpu = smp_psci_prepare_cpu,
|
|
};
|