root/arch/unicore32/include/asm/hwdef-copro.h

INCLUDED FROM

DEFINITIONS

1. get_cr
2. set_cr

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Co-processor register definitions for PKUnity SoC and UniCore ISA
   4  *
   5  * Copyright (C) 2001-2012 GUAN Xue-tao
   6  */
   7 #ifndef __UNICORE_HWDEF_COPRO_H__
   8 #define __UNICORE_HWDEF_COPRO_H__
   9 
  10 /*
  11  * Control Register bits (CP#0 CR1)
  12  */
  13 #define CR_M    (1 << 0)        /* MMU enable                           */
  14 #define CR_A    (1 << 1)        /* Alignment abort enable               */
  15 #define CR_D    (1 << 2)        /* Dcache enable                        */
  16 #define CR_I    (1 << 3)        /* Icache enable                        */
  17 #define CR_B    (1 << 4)        /* Dcache write mechanism: write back   */
  18 #define CR_T    (1 << 5)        /* Burst enable                         */
  19 #define CR_V    (1 << 13)       /* Vectors relocated to 0xffff0000      */
  20 
  21 #ifndef __ASSEMBLY__
  22 
  23 #define vectors_high()          (cr_alignment & CR_V)
  24 
  25 extern unsigned long cr_no_alignment;   /* defined in entry.S */
  26 extern unsigned long cr_alignment;      /* defined in entry.S */
  27 
  28 static inline unsigned int get_cr(void)
  29 {
  30         unsigned int val;
  31         asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc");
  32         return val;
  33 }
  34 
  35 static inline void set_cr(unsigned int val)
  36 {
  37         asm volatile("movc p0.c1, %0, #0" : : "r" (val) : "cc");
  38         isb();
  39 }
  40 
  41 extern void adjust_cr(unsigned long mask, unsigned long set);
  42 
  43 #endif /* __ASSEMBLY__ */
  44 
  45 #endif /* __UNICORE_HWDEF_COPRO_H__ */