From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/arm/mach-alpine/platsmp.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 arch/arm/mach-alpine/platsmp.c (limited to 'arch/arm/mach-alpine/platsmp.c') diff --git a/arch/arm/mach-alpine/platsmp.c b/arch/arm/mach-alpine/platsmp.c new file mode 100644 index 0000000000..fc4bba2902 --- /dev/null +++ b/arch/arm/mach-alpine/platsmp.c @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * SMP operations for Alpine platform. + * + * Copyright (C) 2015 Annapurna Labs Ltd. + */ + +#include +#include +#include +#include + +#include + +#include "alpine_cpu_pm.h" + +static int alpine_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + phys_addr_t addr; + + addr = __pa_symbol(secondary_startup); + + if (addr > (phys_addr_t)(uint32_t)(-1)) { + pr_err("FAIL: resume address over 32bit (%pa)", &addr); + return -EINVAL; + } + + return alpine_cpu_wakeup(cpu_logical_map(cpu), (uint32_t)addr); +} + +static void __init alpine_smp_prepare_cpus(unsigned int max_cpus) +{ + alpine_cpu_pm_init(); +} + +static const struct smp_operations alpine_smp_ops __initconst = { + .smp_prepare_cpus = alpine_smp_prepare_cpus, + .smp_boot_secondary = alpine_boot_secondary, +}; +CPU_METHOD_OF_DECLARE(alpine_smp, "al,alpine-smp", &alpine_smp_ops); -- cgit v1.2.3