include/cpu_func.h

   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  */
  18 int cpu_status(u32 nr);
  19 int cpu_reset(u32 nr);
  20 int cpu_disable(u32 nr);
  21 int cpu_release(u32 nr, int argc, char *const argv[]);
  22
  23 static 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
  36 int cpu_numcores(void);
  37 int cpu_num_dspcores(void);
  38 u32 cpu_mask(void);
  39 u32 cpu_dsp_mask(void);
  40 int 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  */
  50 int checkcpu(void);
  51
  52 void smp_set_core_boot_addr(unsigned long addr, int corenr);
  53 void smp_kick_all_cpus(void);
  54
  55 int icache_status(void);
  56 void icache_enable(void);
  57 void icache_disable(void);
  58 int dcache_status(void);
  59 void dcache_enable(void);
  60 void dcache_disable(void);
  61 void mmu_disable(void);
  62
  63 /* arch/$(ARCH)/lib/cache.c */
  64 void enable_caches(void);
  65 void flush_cache(unsigned long addr, unsigned long size);
  66 void flush_dcache_all(void);
  67 void flush_dcache_range(unsigned long start, unsigned long stop);
  68 void invalidate_dcache_range(unsigned long start, unsigned long stop);
  69 void invalidate_dcache_all(void);
  70 void invalidate_icache_all(void);
  71
  72 enum {
  73         /* Disable caches (else flush caches but leave them active) */
  74         CBL_DISABLE_CACHES              = 1 << 0,
  75         CBL_SHOW_BOOTSTAGE_REPORT       = 1 << 1,
  76
  77         CBL_ALL                         = 3,
  78 };
  79
  80 /**
  81  * Clean up ready for linux
  82  *
  83  * @param flags         Flags to control what is done
  84  */
  85 int cleanup_before_linux_select(int flags);
  86
  87 void reset_cpu(ulong addr);
  88 ;
  89 #endif