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