1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Prototypes for functions that are shared between setup_(32|64|common).c 4 * 5 * Copyright 2016 Michael Ellerman, IBM Corporation. 6 */ 7 8 #ifndef __ARCH_POWERPC_KERNEL_SETUP_H 9 #define __ARCH_POWERPC_KERNEL_SETUP_H 10 11 #ifdef CONFIG_CC_IS_CLANG 12 #define __nostackprotector 13 #else 14 #define __nostackprotector __attribute__((__optimize__("no-stack-protector"))) 15 #endif 16 17 void initialize_cache_info(void); 18 void irqstack_early_init(void); 19 20 #ifdef CONFIG_PPC32 21 void setup_power_save(void); 22 #else 23 static inline void setup_power_save(void) { }; 24 #endif 25 26 #if defined(CONFIG_PPC64) && defined(CONFIG_SMP) 27 void check_smt_enabled(void); 28 #else 29 static inline void check_smt_enabled(void) { }; 30 #endif 31 32 #if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP) 33 void setup_tlb_core_data(void); 34 #else 35 static inline void setup_tlb_core_data(void) { }; 36 #endif 37 38 #if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE) || defined(CONFIG_40x) 39 void exc_lvl_early_init(void); 40 #else 41 static inline void exc_lvl_early_init(void) { }; 42 #endif 43 44 #if defined(CONFIG_PPC64) || defined(CONFIG_VMAP_STACK) 45 void emergency_stack_init(void); 46 #else 47 static inline void emergency_stack_init(void) { }; 48 #endif 49 50 #ifdef CONFIG_PPC64 51 u64 ppc64_bolted_size(void); 52 53 /* Default SPR values from firmware/kexec */ 54 extern unsigned long spr_default_dscr; 55 #endif 56 57 /* 58 * Having this in kvm_ppc.h makes include dependencies too 59 * tricky to solve for setup-common.c so have it here. 60 */ 61 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 62 void kvm_cma_reserve(void); 63 #else 64 static inline void kvm_cma_reserve(void) { }; 65 #endif 66 67 #ifdef CONFIG_TAU 68 u32 cpu_temp(unsigned long cpu); 69 u32 cpu_temp_both(unsigned long cpu); 70 u32 tau_interrupts(unsigned long cpu); 71 #endif /* CONFIG_TAU */ 72 73 #endif /* __ARCH_POWERPC_KERNEL_SETUP_H */ 74