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| 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 __ASSEMBLER__ |
| 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 /* !__ASSEMBLER__ */ |
| 93 | |
| 94 | #endif /* _ASM_POWERPC_SETUP_H */ |
| 95 | |
| 96 |
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