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Diffstat (limited to 'include/cpu_func.h')
-rw-r--r-- | include/cpu_func.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/cpu_func.h b/include/cpu_func.h new file mode 100644 index 0000000000..46f3d92459 --- /dev/null +++ b/include/cpu_func.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2000-2009 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * Copyright 2019 Google LLC + */ + +#ifndef __CPU_LEGACY_H +#define __CPU_LEGACY_H + +#include <linux/types.h> + +/* + * Multicore arch functions + * + * These should be moved to use the CPU uclass. + */ +int cpu_status(u32 nr); +int cpu_reset(u32 nr); +int cpu_disable(u32 nr); +int cpu_release(u32 nr, int argc, char * const argv[]); + +static inline int cpumask_next(int cpu, unsigned int mask) +{ + for (cpu++; !((1 << cpu) & mask); cpu++) + ; + + return cpu; +} + +#define for_each_cpu(iter, cpu, num_cpus, mask) \ + for (iter = 0, cpu = cpumask_next(-1, mask); \ + iter < num_cpus; \ + iter++, cpu = cpumask_next(cpu, mask)) \ + +int cpu_numcores(void); +int cpu_num_dspcores(void); +u32 cpu_mask(void); +u32 cpu_dsp_mask(void); +int is_core_valid(unsigned int core); + +/** + * checkcpu() - perform an early check of the CPU + * + * This is used on PowerPC, SH and X86 machines as a CPU init mechanism. It is + * called during the pre-relocation init sequence in board_init_f(). + * + * @return 0 if oK, -ve on error + */ +int checkcpu(void); + +void smp_set_core_boot_addr(unsigned long addr, int corenr); +void smp_kick_all_cpus(void); + +int icache_status(void); +void icache_enable(void); +void icache_disable(void); +int dcache_status(void); +void dcache_enable(void); +void dcache_disable(void); +void mmu_disable(void); + +/* arch/$(ARCH)/lib/cache.c */ +void enable_caches(void); +void flush_cache(unsigned long addr, unsigned long size); +void flush_dcache_all(void); +void flush_dcache_range(unsigned long start, unsigned long stop); +void invalidate_dcache_range(unsigned long start, unsigned long stop); +void invalidate_dcache_all(void); +void invalidate_icache_all(void); + +enum { + /* Disable caches (else flush caches but leave them active) */ + CBL_DISABLE_CACHES = 1 << 0, + CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1, + + CBL_ALL = 3, +}; + +/** + * Clean up ready for linux + * + * @param flags Flags to control what is done + */ +int cleanup_before_linux_select(int flags); +; +#endif |