git.mutantstargoat.com Git - rpikern/blob - src/sysctl.h

   1 #ifndef SYSCTL_H_
   2 #define SYSCTL_H_
   3
   4 /* c7 reg, op1=0, mode c14 is clean&inval, op2=1 is cacheline MVA */
   5 #define sysctl_dcache_clean_inval(addr, len) \
   6         do { \
   7                 register uint32_t a asm("r0") = addr; \
   8                 asm volatile( \
   9                         "\n0:\tmcr p15, 0, %0, c7, c14, 1" \
  10                         "\n\tadd %0, #64" \
  11                         "\n\tcmp %0, %1" \
  12                         "\n\tblo 0b" \
  13                         :: "r"(a), "r"(addr + len) \
  14                         : "memory"); \
  15         } while(0)
  16
  17
  18 #endif  /* SYSCTL_H_ */