xref: /OK3568_Linux_fs/kernel/arch/powerpc/include/asm/book3s/64/kexec.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun 
3*4882a593Smuzhiyun #ifndef _ASM_POWERPC_BOOK3S_64_KEXEC_H_
4*4882a593Smuzhiyun #define _ASM_POWERPC_BOOK3S_64_KEXEC_H_
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun 
7*4882a593Smuzhiyun #define reset_sprs reset_sprs
reset_sprs(void)8*4882a593Smuzhiyun static inline void reset_sprs(void)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun 	if (cpu_has_feature(CPU_FTR_ARCH_206)) {
11*4882a593Smuzhiyun 		mtspr(SPRN_AMR, 0);
12*4882a593Smuzhiyun 		mtspr(SPRN_UAMOR, 0);
13*4882a593Smuzhiyun 	}
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun 	if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
16*4882a593Smuzhiyun 		mtspr(SPRN_IAMR, 0);
17*4882a593Smuzhiyun 	}
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun 	/*  Do we need isync()? We are going via a kexec reset */
20*4882a593Smuzhiyun 	isync();
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun #endif
24