1 // SPDX-License-Identifier: GPL-2.0-or-later
23 #include <linux/cpu.h>
38 #include <asm/text-patching.h>
50  * The Primary thread of each non-boot processor was started from the OF client
56  * smp_startup_cpu() - start the given cpu
57  * @lcpu: Logical CPU ID of the CPU to be started.
64  *	0	- failure
65  *	1	- success
82 	 * If the RTAS start-cpu token does not exist then presume the  in smp_startup_cpu()
83 	 * cpu is already spinning.  in smp_startup_cpu()
91 		printk(KERN_ERR "start-cpu failed: %i\n", status);  in smp_startup_cpu()
98 static void smp_cell_setup_cpu(int cpu)  in smp_cell_setup_cpu()  argument
100 	if (cpu != boot_cpuid)  in smp_cell_setup_cpu()
109 static int smp_cell_kick_cpu(int nr)  in smp_cell_kick_cpu()  argument
111 	if (nr < 0 || nr >= nr_cpu_ids)  in smp_cell_kick_cpu()
112 		return -EINVAL;  in smp_cell_kick_cpu()
114 	if (!smp_startup_cpu(nr))  in smp_cell_kick_cpu()
115 		return -ENOENT;  in smp_cell_kick_cpu()
119 	 * cpu_start field to become non-zero After we set cpu_start,  in smp_cell_kick_cpu()
122 	paca_ptrs[nr]->cpu_start = 1;  in smp_cell_kick_cpu()
140 	DBG(" -> smp_init_cell()\n");  in smp_init_cell()
155 	/* Non-lpar has additional take/give timebase */  in smp_init_cell()
157 		smp_ops->give_timebase = rtas_give_timebase;  in smp_init_cell()
158 		smp_ops->take_timebase = rtas_take_timebase;  in smp_init_cell()
161 	DBG(" <- smp_init_cell()\n");  in smp_init_cell()