1 // SPDX-License-Identifier: GPL-2.0-only
43 static int smp_spin_table_cpu_init(unsigned int cpu)  in smp_spin_table_cpu_init()  argument
48 	dn = of_get_cpu_node(cpu, NULL);  in smp_spin_table_cpu_init()
50 		return -ENODEV;  in smp_spin_table_cpu_init()
53 	 * Determine the address from which the CPU is polling.  in smp_spin_table_cpu_init()
55 	ret = of_property_read_u64(dn, "cpu-release-addr",  in smp_spin_table_cpu_init()
56 				   &cpu_release_addr[cpu]);  in smp_spin_table_cpu_init()
58 		pr_err("CPU %d: missing or invalid cpu-release-addr property\n",  in smp_spin_table_cpu_init()
59 		       cpu);  in smp_spin_table_cpu_init()
66 static int smp_spin_table_cpu_prepare(unsigned int cpu)  in smp_spin_table_cpu_prepare()  argument
70 	if (!cpu_release_addr[cpu])  in smp_spin_table_cpu_prepare()
71 		return -ENODEV;  in smp_spin_table_cpu_prepare()
74 	 * The cpu-release-addr may or may not be inside the linear mapping.  in smp_spin_table_cpu_prepare()
79 	release_addr = ioremap_cache(cpu_release_addr[cpu],  in smp_spin_table_cpu_prepare()
82 		return -ENOMEM;  in smp_spin_table_cpu_prepare()
85 	 * We write the release address as LE regardless of the native  in smp_spin_table_cpu_prepare()
86 	 * endianness of the kernel. Therefore, any boot-loaders that  in smp_spin_table_cpu_prepare()
88 	 * boot-loader's endianness before jumping. This is mandated by  in smp_spin_table_cpu_prepare()
96 	 * Send an event to wake up the secondary CPU.  in smp_spin_table_cpu_prepare()
105 static int smp_spin_table_cpu_boot(unsigned int cpu)  in smp_spin_table_cpu_boot()  argument
108 	 * Update the pen release flag.  in smp_spin_table_cpu_boot()
110 	write_pen_release(cpu_logical_map(cpu));  in smp_spin_table_cpu_boot()
121 	.name		= "spin-table",