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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__
8extern void ppc_printk_progress(char *s, unsigned short hex);
9
10extern unsigned long long memory_limit;
11
12struct device_node;
13
14/* Used in very early kernel initialization. */
15extern unsigned long reloc_offset(void);
16extern unsigned long add_reloc_offset(unsigned long);
17extern void reloc_got2(unsigned long);
18
19#define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x)))
20
21void check_for_initrd(void);
22void mem_topology_setup(void);
23#ifdef CONFIG_NUMA
24void initmem_init(void);
25#else
26static inline void initmem_init(void) {}
27#endif
28void setup_panic(void);
29#define ARCH_PANIC_TIMEOUT 180
30
31#ifdef CONFIG_PPC_PSERIES
32extern bool pseries_reloc_on_exception(void);
33extern bool pseries_enable_reloc_on_exc(void);
34extern void pseries_disable_reloc_on_exc(void);
35extern void pseries_big_endian_exceptions(void);
36void __init pseries_little_endian_exceptions(void);
37#else
38static inline bool pseries_reloc_on_exception(void) { return false; }
39static inline bool pseries_enable_reloc_on_exc(void) { return false; }
40static inline void pseries_disable_reloc_on_exc(void) {}
41static inline void pseries_big_endian_exceptions(void) {}
42static inline void pseries_little_endian_exceptions(void) {}
43#endif /* CONFIG_PPC_PSERIES */
44
45void rfi_flush_enable(bool enable);
46
47/* These are bit flags */
48enum l1d_flush_type {
49 L1D_FLUSH_NONE = 0x1,
50 L1D_FLUSH_FALLBACK = 0x2,
51 L1D_FLUSH_ORI = 0x4,
52 L1D_FLUSH_MTTRIG = 0x8,
53};
54
55void setup_rfi_flush(enum l1d_flush_type, bool enable);
56void setup_entry_flush(bool enable);
57void setup_uaccess_flush(bool enable);
58void do_rfi_flush_fixups(enum l1d_flush_type types);
59#ifdef CONFIG_PPC_BARRIER_NOSPEC
60void __init setup_barrier_nospec(void);
61#else
62static inline void setup_barrier_nospec(void) { }
63#endif
64void do_uaccess_flush_fixups(enum l1d_flush_type types);
65void do_entry_flush_fixups(enum l1d_flush_type types);
66void do_barrier_nospec_fixups(bool enable);
67extern bool barrier_nospec_enabled;
68
69#ifdef CONFIG_PPC_BARRIER_NOSPEC
70void do_barrier_nospec_fixups_range(bool enable, void *start, void *end);
71#else
72static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { }
73#endif
74
75#ifdef CONFIG_PPC_E500
76void __init setup_spectre_v2(void);
77#else
78static inline void setup_spectre_v2(void) {}
79#endif
80void __init do_btb_flush_fixups(void);
81
82#ifdef CONFIG_PPC32
83unsigned long __init early_init(unsigned long dt_ptr);
84void __init machine_init(u64 dt_ptr);
85#endif
86void __init early_setup(unsigned long dt_ptr);
87void early_setup_secondary(void);
88
89/* prom_init (OpenFirmware) */
90unsigned long __init prom_init(unsigned long r3, unsigned long r4,
91 unsigned long pp, unsigned long r6,
92 unsigned long r7, unsigned long kbase);
93
94extern struct seq_buf ppc_hw_desc;
95
96#endif /* !__ASSEMBLER__ */
97
98#endif /* _ASM_POWERPC_SETUP_H */
99