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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-shmobile/platsmp.c | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-shmobile/platsmp.c')
| -rw-r--r-- | arch/arm/mach-shmobile/platsmp.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c new file mode 100644 index 000000000..7437c0151 --- /dev/null +++ b/arch/arm/mach-shmobile/platsmp.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SMP support for R-Mobile / SH-Mobile + * + * Copyright (C) 2010 Magnus Damm + * Copyright (C) 2011 Paul Mundt + * + * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved + */ +#include <linux/init.h> +#include <asm/cacheflush.h> +#include <asm/smp_plat.h> +#include "common.h" + +extern unsigned long shmobile_smp_fn[]; +extern unsigned long shmobile_smp_arg[]; +extern unsigned long shmobile_smp_mpidr[]; + +void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) +{ + shmobile_smp_fn[cpu] = 0; + flush_cache_all(); + + shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu); + shmobile_smp_fn[cpu] = fn; + shmobile_smp_arg[cpu] = arg; + flush_cache_all(); +} + +#ifdef CONFIG_HOTPLUG_CPU +bool shmobile_smp_cpu_can_disable(unsigned int cpu) +{ + return true; /* Hotplug of any CPU is supported */ +} +#endif |