arch/arm/include/asm/system_misc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_ARM_SYSTEM_MISC_H
   3 #define __ASM_ARM_SYSTEM_MISC_H
   4
   5 #ifndef __ASSEMBLY__
   6
   7 #include <linux/compiler.h>
   8 #include <linux/linkage.h>
   9 #include <linux/irqflags.h>
  10 #include <linux/reboot.h>
  11 #include <linux/percpu.h>
  12
  13 extern void cpu_init(void);
  14
  15 void soft_restart(unsigned long);
  16 extern void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
  17 extern void (*arm_pm_idle)(void);
  18
  19 #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
  20 typedef void (*harden_branch_predictor_fn_t)(void);
  21 DECLARE_PER_CPU(harden_branch_predictor_fn_t, harden_branch_predictor_fn);
  22 static inline void harden_branch_predictor(void)
  23 {
  24         harden_branch_predictor_fn_t fn = per_cpu(harden_branch_predictor_fn,
  25                                                   smp_processor_id());
  26         if (fn)
  27                 fn();
  28 }
  29 #else
  30 #define harden_branch_predictor() do { } while (0)
  31 #endif
  32
  33 #define UDBG_UNDEFINED  (1 << 0)
  34 #define UDBG_SYSCALL    (1 << 1)
  35 #define UDBG_BADABORT   (1 << 2)
  36 #define UDBG_SEGV       (1 << 3)
  37 #define UDBG_BUS        (1 << 4)
  38
  39 extern unsigned int user_debug;
  40
  41 #endif /* !__ASSEMBLY__ */
  42
  43 #endif /* __ASM_ARM_SYSTEM_MISC_H */