LXR linux/arch/powerpc/include/asm/book3s/64/kexec.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3#ifndef _ASM_POWERPC_BOOK3S_64_KEXEC_H_
   4#define _ASM_POWERPC_BOOK3S_64_KEXEC_H_
   5
   6#include <asm/plpar_wrappers.h>
   7
   8#define reset_sprs reset_sprs
   9static inline void reset_sprs(void)
  10{
  11        if (cpu_has_feature(CPU_FTR_ARCH_206)) {
  12                mtspr(SPRN_AMR, 0);
  13                mtspr(SPRN_UAMOR, 0);
  14        }
  15
  16        if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
  17                mtspr(SPRN_IAMR, 0);
  18                if (cpu_has_feature(CPU_FTR_HVMODE))
  19                        mtspr(SPRN_CIABR, 0);
  20                else
  21                        plpar_set_ciabr(0);
  22        }
  23
  24        /*  Do we need isync()? We are going via a kexec reset */
  25        isync();
  26}
  27
  28#endif
  29