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 void *zalloc_maybe_bootmem(size_t size, gfp_t mask); 13 14 struct device_node; 15 extern void note_scsi_host(struct device_node *, void *); 16 17 /* Used in very early kernel initialization. */ 18 extern unsigned long reloc_offset(void); 19 extern unsigned long add_reloc_offset(unsigned long); 20 extern void reloc_got2(unsigned long); 21 22 #define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x))) 23 24 void check_for_initrd(void); 25 void mem_topology_setup(void); 26 void initmem_init(void); 27 void setup_panic(void); 28 #define ARCH_PANIC_TIMEOUT 180 29 30 #ifdef CONFIG_PPC_PSERIES 31 extern bool pseries_enable_reloc_on_exc(void); 32 extern void pseries_disable_reloc_on_exc(void); 33 extern void pseries_big_endian_exceptions(void); 34 void __init pseries_little_endian_exceptions(void); 35 #else 36 static inline bool pseries_enable_reloc_on_exc(void) { return false; } 37 static inline void pseries_disable_reloc_on_exc(void) {} 38 static inline void pseries_big_endian_exceptions(void) {} 39 static inline void pseries_little_endian_exceptions(void) {} 40 #endif /* CONFIG_PPC_PSERIES */ 41 42 void rfi_flush_enable(bool enable); 43 44 /* These are bit flags */ 45 enum l1d_flush_type { 46 L1D_FLUSH_NONE = 0x1, 47 L1D_FLUSH_FALLBACK = 0x2, 48 L1D_FLUSH_ORI = 0x4, 49 L1D_FLUSH_MTTRIG = 0x8, 50 }; 51 52 void setup_rfi_flush(enum l1d_flush_type, bool enable); 53 void setup_entry_flush(bool enable); 54 void setup_uaccess_flush(bool enable); 55 void do_rfi_flush_fixups(enum l1d_flush_type types); 56 #ifdef CONFIG_PPC_BARRIER_NOSPEC 57 void __init setup_barrier_nospec(void); 58 #else 59 static inline void setup_barrier_nospec(void) { } 60 #endif 61 void do_uaccess_flush_fixups(enum l1d_flush_type types); 62 void do_entry_flush_fixups(enum l1d_flush_type types); 63 void do_barrier_nospec_fixups(bool enable); 64 extern bool barrier_nospec_enabled; 65 66 #ifdef CONFIG_PPC_BARRIER_NOSPEC 67 void do_barrier_nospec_fixups_range(bool enable, void *start, void *end); 68 #else 69 static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { } 70 #endif 71 72 #ifdef CONFIG_PPC_FSL_BOOK3E 73 void __init setup_spectre_v2(void); 74 #else 75 static inline void setup_spectre_v2(void) {} 76 #endif 77 void __init do_btb_flush_fixups(void); 78 79 #endif /* !__ASSEMBLY__ */ 80 81 #endif /* _ASM_POWERPC_SETUP_H */ 82 83