1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef __ASM_SMP_H 3*4882a593Smuzhiyun #define __ASM_SMP_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun extern int init_per_cpu(int cpuid); 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #if defined(CONFIG_SMP) 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun /* Page Zero Location PDC will look for the address to branch to when we poke 10*4882a593Smuzhiyun ** slave CPUs still in "Icache loop". 11*4882a593Smuzhiyun */ 12*4882a593Smuzhiyun #define PDC_OS_BOOT_RENDEZVOUS 0x10 13*4882a593Smuzhiyun #define PDC_OS_BOOT_RENDEZVOUS_HI 0x28 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #ifndef ASSEMBLY 16*4882a593Smuzhiyun #include <linux/bitops.h> 17*4882a593Smuzhiyun #include <linux/threads.h> /* for NR_CPUS */ 18*4882a593Smuzhiyun #include <linux/cpumask.h> 19*4882a593Smuzhiyun typedef unsigned long address_t; 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* 23*4882a593Smuzhiyun * Private routines/data 24*4882a593Smuzhiyun * 25*4882a593Smuzhiyun * physical and logical are equivalent until we support CPU hotplug. 26*4882a593Smuzhiyun */ 27*4882a593Smuzhiyun #define cpu_number_map(cpu) (cpu) 28*4882a593Smuzhiyun #define cpu_logical_map(cpu) (cpu) 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun extern void smp_send_all_nop(void); 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun extern void arch_send_call_function_single_ipi(int cpu); 33*4882a593Smuzhiyun extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun #endif /* !ASSEMBLY */ 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #define raw_smp_processor_id() (current_thread_info()->cpu) 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #else /* CONFIG_SMP */ 40*4882a593Smuzhiyun smp_send_all_nop(void)41*4882a593Smuzhiyunstatic inline void smp_send_all_nop(void) { return; } 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #endif 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define NO_PROC_ID 0xFF /* No processor magic marker */ 46*4882a593Smuzhiyun #define ANY_PROC_ID 0xFF /* Any processor magic marker */ __cpu_disable(void)47*4882a593Smuzhiyunstatic inline int __cpu_disable (void) { 48*4882a593Smuzhiyun return 0; 49*4882a593Smuzhiyun } __cpu_die(unsigned int cpu)50*4882a593Smuzhiyunstatic inline void __cpu_die (unsigned int cpu) { 51*4882a593Smuzhiyun while(1) 52*4882a593Smuzhiyun ; 53*4882a593Smuzhiyun } 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun #endif /* __ASM_SMP_H */ 56