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 long long memory_limit; 11 12 struct device_node; 13 14 /* Used in very early kernel initialization. */ 15 extern unsigned long reloc_offset(void); 16 extern unsigned long add_reloc_offset(unsigned long); 17 extern void reloc_got2(unsigned long); 18 19 #define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x))) 20 21 void check_for_initrd(void); 22 void mem_topology_setup(void); 23 void initmem_init(void); 24 void setup_panic(void); 25 #define ARCH_PANIC_TIMEOUT 180 26 27 #ifdef CONFIG_PPC_PSERIES 28 extern bool pseries_reloc_on_exception(void); 29 extern bool pseries_enable_reloc_on_exc(void); 30 extern void pseries_disable_reloc_on_exc(void); 31 extern void pseries_big_endian_exceptions(void); 32 void __init pseries_little_endian_exceptions(void); 33 #else 34 static inline bool pseries_reloc_on_exception(void) { return false; } 35 static inline bool pseries_enable_reloc_on_exc(void) { return false; } 36 static inline void pseries_disable_reloc_on_exc(void) {} 37 static inline void pseries_big_endian_exceptions(void) {} 38 static inline void pseries_little_endian_exceptions(void) {} 39 #endif /* CONFIG_PPC_PSERIES */ 40 41 void rfi_flush_enable(bool enable); 42 43 /* These are bit flags */ 44 enum l1d_flush_type { 45 L1D_FLUSH_NONE = 0x1, 46 L1D_FLUSH_FALLBACK = 0x2, 47 L1D_FLUSH_ORI = 0x4, 48 L1D_FLUSH_MTTRIG = 0x8, 49 }; 50 51 void setup_rfi_flush(enum l1d_flush_type, bool enable); 52 void setup_entry_flush(bool enable); 53 void setup_uaccess_flush(bool enable); 54 void do_rfi_flush_fixups(enum l1d_flush_type types); 55 #ifdef CONFIG_PPC_BARRIER_NOSPEC 56 void __init setup_barrier_nospec(void); 57 #else 58 static inline void setup_barrier_nospec(void) { } 59 #endif 60 void do_uaccess_flush_fixups(enum l1d_flush_type types); 61 void do_entry_flush_fixups(enum l1d_flush_type types); 62 void do_barrier_nospec_fixups(bool enable); 63 extern bool barrier_nospec_enabled; 64 65 #ifdef CONFIG_PPC_BARRIER_NOSPEC 66 void do_barrier_nospec_fixups_range(bool enable, void *start, void *end); 67 #else 68 static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { } 69 #endif 70 71 #ifdef CONFIG_PPC_E500 72 void __init setup_spectre_v2(void); 73 #else 74 static inline void setup_spectre_v2(void) {} 75 #endif 76 void __init do_btb_flush_fixups(void); 77 78 #ifdef CONFIG_PPC32 79 unsigned long __init early_init(unsigned long dt_ptr); 80 void __init machine_init(u64 dt_ptr); 81 #endif 82 void __init early_setup(unsigned long dt_ptr); 83 void early_setup_secondary(void); 84 85 /* prom_init (OpenFirmware) */ 86 unsigned long __init prom_init(unsigned long r3, unsigned long r4, 87 unsigned long pp, unsigned long r6, 88 unsigned long r7, unsigned long kbase); 89 90 extern struct seq_buf ppc_hw_desc; 91 92 #endif /* !__ASSEMBLY__ */ 93 94 #endif /* _ASM_POWERPC_SETUP_H */ 95 96