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
9 static 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 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
25 mtspr(SPRN_DEXCR, 0);
26 mtspr(SPRN_HASHKEYR, 0);
27 }
28
29 /* Do we need isync()? We are going via a kexec reset */
30 isync();
31 }
32
33 #endif
34
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