1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * (C) Copyright 2000-2009 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 * Copyright 2019 Google LLC 6 */ 7 8#ifndef __CPU_LEGACY_H 9#define __CPU_LEGACY_H 10 11#include <linux/types.h> 12 13/* 14 * Multicore arch functions 15 * 16 * These should be moved to use the CPU uclass. 17 */ 18int cpu_status(u32 nr); 19int cpu_reset(u32 nr); 20int cpu_disable(u32 nr); 21int cpu_release(u32 nr, int argc, char *const argv[]); 22 23static inline int cpumask_next(int cpu, unsigned int mask) 24{ 25 for (cpu++; !((1 << cpu) & mask); cpu++) 26 ; 27 28 return cpu; 29} 30 31#define for_each_cpu(iter, cpu, num_cpus, mask) \ 32 for (iter = 0, cpu = cpumask_next(-1, mask); \ 33 iter < num_cpus; \ 34 iter++, cpu = cpumask_next(cpu, mask)) \ 35 36int cpu_numcores(void); 37int cpu_num_dspcores(void); 38u32 cpu_mask(void); 39u32 cpu_dsp_mask(void); 40int is_core_valid(unsigned int core); 41 42/** 43 * checkcpu() - perform an early check of the CPU 44 * 45 * This is used on PowerPC, SH and X86 machines as a CPU init mechanism. It is 46 * called during the pre-relocation init sequence in board_init_f(). 47 * 48 * Return: 0 if oK, -ve on error 49 */ 50int checkcpu(void); 51 52void smp_set_core_boot_addr(unsigned long addr, int corenr); 53void smp_kick_all_cpus(void); 54 55int icache_status(void); 56void icache_enable(void); 57void icache_disable(void); 58int dcache_status(void); 59void dcache_enable(void); 60void dcache_disable(void); 61void mmu_disable(void); 62int mmu_status(void); 63 64/* arch/$(ARCH)/lib/cache.c */ 65void enable_caches(void); 66void flush_cache(unsigned long addr, unsigned long size); 67void flush_dcache_all(void); 68void flush_dcache_range(unsigned long start, unsigned long stop); 69void invalidate_dcache_range(unsigned long start, unsigned long stop); 70void invalidate_dcache_all(void); 71void invalidate_icache_all(void); 72 73enum { 74 /* Disable caches (else flush caches but leave them active) */ 75 CBL_DISABLE_CACHES = 1 << 0, 76 CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1, 77 78 CBL_ALL = 3, 79}; 80 81/** 82 * Clean up ready for linux 83 * 84 * @param flags Flags to control what is done 85 */ 86int cleanup_before_linux_select(int flags); 87 88void reset_cpu(void); 89 90#endif 91