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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/arm/mach-keystone/platsmp.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-keystone/platsmp.c')
-rw-r--r-- | arch/arm/mach-keystone/platsmp.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-keystone/platsmp.c b/arch/arm/mach-keystone/platsmp.c new file mode 100644 index 000000000..673fcf3b3 --- /dev/null +++ b/arch/arm/mach-keystone/platsmp.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Keystone SOC SMP platform code + * + * Copyright 2013 Texas Instruments, Inc. + * Cyril Chemparathy <cyril@ti.com> + * Santosh Shilimkar <santosh.shillimkar@ti.com> + * + * Based on platsmp.c, Copyright (C) 2002 ARM Ltd. + */ + +#include <linux/init.h> +#include <linux/smp.h> +#include <linux/io.h> +#include <linux/pgtable.h> + +#include <asm/smp_plat.h> +#include <asm/prom.h> +#include <asm/tlbflush.h> + +#include "keystone.h" + +static int keystone_smp_boot_secondary(unsigned int cpu, + struct task_struct *idle) +{ + unsigned long start = virt_to_idmap(&secondary_startup); + int error; + + pr_debug("keystone-smp: booting cpu %d, vector %08lx\n", + cpu, start); + + error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start); + if (error) + pr_err("CPU %d bringup failed with %d\n", cpu, error); + + return error; +} + +const struct smp_operations keystone_smp_ops __initconst = { + .smp_boot_secondary = keystone_smp_boot_secondary, +}; |