arch/unicore32/include/asm/cpu-single.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * linux/arch/unicore32/include/asm/cpu-single.h
   4  *
   5  * Code specific to PKUnity SoC and UniCore ISA
   6  *
   7  * Copyright (C) 2001-2010 GUAN Xue-tao
   8  */
   9 #ifndef __UNICORE_CPU_SINGLE_H__
  10 #define __UNICORE_CPU_SINGLE_H__
  11
  12 #include <asm/page.h>
  13 #include <asm/memory.h>
  14
  15 #ifdef __KERNEL__
  16 #ifndef __ASSEMBLY__
  17
  18 #define cpu_switch_mm(pgd, mm) cpu_do_switch_mm(virt_to_phys(pgd), mm)
  19
  20 #define cpu_get_pgd()                                   \
  21         ({                                              \
  22                 unsigned long pg;                       \
  23                 __asm__("movc   %0, p0.c2, #0"          \
  24                          : "=r" (pg) : : "cc");         \
  25                 pg &= ~0x0fff;                          \
  26                 (pgd_t *)phys_to_virt(pg);              \
  27         })
  28
  29 struct mm_struct;
  30
  31 /* declare all the functions as extern */
  32 extern void cpu_proc_fin(void);
  33 extern int cpu_do_idle(void);
  34 extern void cpu_dcache_clean_area(void *, int);
  35 extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm);
  36 extern void cpu_set_pte(pte_t *ptep, pte_t pte);
  37 extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
  38
  39 #endif /* __ASSEMBLY__ */
  40 #endif /* __KERNEL__ */
  41
  42 #endif /* __UNICORE_CPU_SINGLE_H__ */