1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_SETUP_H 3 #define _ASM_POWERPC_SETUP_H 4 5 #include <uapi/asm/setup.h> 6 7 #ifndef __ASSEMBLY__ 8 extern void ppc_printk_progress(char *s, unsigned short hex); 9 10 extern unsigned int rtas_data; 11 extern unsigned long long memory_limit; 12 extern bool init_mem_is_free; 13 extern unsigned long klimit; 14 extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); 15 16 struct device_node; 17 extern void note_scsi_host(struct device_node *, void *); 18 19 /* Used in very early kernel initialization. */ 20 extern unsigned long reloc_offset(void); 21 extern unsigned long add_reloc_offset(unsigned long); 22 extern void reloc_got2(unsigned long); 23 24 #define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x))) 25 26 void check_for_initrd(void); 27 void mem_topology_setup(void); 28 void initmem_init(void); 29 void setup_panic(void); 30 #define ARCH_PANIC_TIMEOUT 180 31 32 #ifdef CONFIG_PPC_PSERIES 33 extern void pseries_enable_reloc_on_exc(void); 34 extern void pseries_disable_reloc_on_exc(void); 35 extern void pseries_big_endian_exceptions(void); 36 extern void pseries_little_endian_exceptions(void); 37 #else 38 static inline void pseries_enable_reloc_on_exc(void) {} 39 static inline void pseries_disable_reloc_on_exc(void) {} 40 static inline void pseries_big_endian_exceptions(void) {} 41 static inline void pseries_little_endian_exceptions(void) {} 42 #endif /* CONFIG_PPC_PSERIES */ 43 44 void rfi_flush_enable(bool enable); 45 46 /* These are bit flags */ 47 enum l1d_flush_type { 48 L1D_FLUSH_NONE = 0x1, 49 L1D_FLUSH_FALLBACK = 0x2, 50 L1D_FLUSH_ORI = 0x4, 51 L1D_FLUSH_MTTRIG = 0x8, 52 }; 53 54 void setup_rfi_flush(enum l1d_flush_type, bool enable); 55 void do_rfi_flush_fixups(enum l1d_flush_type types); 56 #ifdef CONFIG_PPC_BARRIER_NOSPEC 57 void setup_barrier_nospec(void); 58 #else 59 static inline void setup_barrier_nospec(void) { }; 60 #endif 61 void do_barrier_nospec_fixups(bool enable); 62 extern bool barrier_nospec_enabled; 63 64 #ifdef CONFIG_PPC_BARRIER_NOSPEC 65 void do_barrier_nospec_fixups_range(bool enable, void *start, void *end); 66 #else 67 static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { }; 68 #endif 69 70 #ifdef CONFIG_PPC_FSL_BOOK3E 71 void setup_spectre_v2(void); 72 #else 73 static inline void setup_spectre_v2(void) {}; 74 #endif 75 void do_btb_flush_fixups(void); 76 77 #endif /* !__ASSEMBLY__ */ 78 79 #endif /* _ASM_POWERPC_SETUP_H */ 80 81