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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-12-05 11:39:39 +0100 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2017-01-03 10:50:40 +0100 |
| commit | d03c8f78d03af2a46127537dd1daa67164e53c09 (patch) | |
| tree | 8916b767f54c2655590f2a2fac460f8fa1585ba0 /arch/arm/mach-shmobile | |
| parent | 10f778a97845e8b10af8878af99c9cfe6c31baf9 (diff) | |
| download | linux-d03c8f78d03af2a46127537dd1daa67164e53c09.tar.gz linux-d03c8f78d03af2a46127537dd1daa67164e53c09.tar.xz | |
ARM: shmobile: apmu: Allow booting secondary CPU cores in debug mode
Now debug resource reset is handled properly, allow booting secondary
CPU cores when hardware debug mode is enabled (MD21=1) on SoCs using the
"renesas,apmu" enable method.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile')
| -rw-r--r-- | arch/arm/mach-shmobile/platsmp-apmu.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c index 7e4ca6788be5..e19266844e16 100644 --- a/arch/arm/mach-shmobile/platsmp-apmu.c +++ b/arch/arm/mach-shmobile/platsmp-apmu.c @@ -216,21 +216,9 @@ static void __init shmobile_smp_apmu_prepare_cpus_dt(unsigned int max_cpus) rcar_gen2_pm_init(); } -static int shmobile_smp_apmu_boot_secondary_md21(unsigned int cpu, - struct task_struct *idle) -{ - /* Error out when hardware debug mode is enabled */ - if (rcar_gen2_read_mode_pins() & BIT(21)) { - pr_warn("Unable to boot CPU%u when MD21 is set\n", cpu); - return -ENOTSUPP; - } - - return shmobile_smp_apmu_boot_secondary(cpu, idle); -} - static struct smp_operations apmu_smp_ops __initdata = { .smp_prepare_cpus = shmobile_smp_apmu_prepare_cpus_dt, - .smp_boot_secondary = shmobile_smp_apmu_boot_secondary_md21, + .smp_boot_secondary = shmobile_smp_apmu_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU .cpu_can_disable = shmobile_smp_cpu_can_disable, .cpu_die = shmobile_smp_apmu_cpu_die, |