arm/mach-actions/platsmp.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Actions Semi Leopard
7  * Copyright 2012 Actions Semi Inc.
8  * Author: Actions Semi, Inc.
18 #include <linux/soc/actions/owl-sps.h>
35 static void __iomem *scu_base_addr;
36 static void __iomem *sps_base_addr;
37 static void __iomem *timer_base_addr;
38 static int ncores;
40 static int s500_wakeup_secondary(unsigned int cpu)  in s500_wakeup_secondary()
45 		return -EINVAL;  in s500_wakeup_secondary()
69 	       timer_base_addr + OWL_CPU1_ADDR + (cpu - 1) * 4);  in s500_wakeup_secondary()
71 	       timer_base_addr + OWL_CPU1_FLAG + (cpu - 1) * 4);  in s500_wakeup_secondary()
79 static int s500_smp_boot_secondary(unsigned int cpu, struct task_struct *idle)  in s500_smp_boot_secondary()
91 	writel(0, timer_base_addr + OWL_CPU1_ADDR + (cpu - 1) * 4);  in s500_smp_boot_secondary()
92 	writel(0, timer_base_addr + OWL_CPU1_FLAG + (cpu - 1) * 4);  in s500_smp_boot_secondary()
97 static void __init s500_smp_prepare_cpus(unsigned int max_cpus)  in s500_smp_prepare_cpus()
101 	node = of_find_compatible_node(NULL, NULL, "actions,s500-timer");  in s500_smp_prepare_cpus()
113 	node = of_find_compatible_node(NULL, NULL, "actions,s500-sps");  in s500_smp_prepare_cpus()
126 		node = of_find_compatible_node(NULL, NULL, "arm,cortex-a9-scu");  in s500_smp_prepare_cpus()
150 static const struct smp_operations s500_smp_ops __initconst = {
154 CPU_METHOD_OF_DECLARE(s500_smp, "actions,s500-smp", &s500_smp_ops);