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__
8extern void ppc_printk_progress(char *s, unsigned short hex);
9
10extern unsigned int rtas_data;
11extern unsigned long long memory_limit;
12extern bool init_mem_is_free;
13extern unsigned long klimit;
14extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
15
16struct device_node;
17extern void note_scsi_host(struct device_node *, void *);
18
19/* Used in very early kernel initialization. */
20extern unsigned long reloc_offset(void);
21extern unsigned long add_reloc_offset(unsigned long);
22extern void reloc_got2(unsigned long);
23
24#define PTRRELOC(x)	((typeof(x)) add_reloc_offset((unsigned long)(x)))
25
26void check_for_initrd(void);
27void mem_topology_setup(void);
28void initmem_init(void);
29void setup_panic(void);
30#define ARCH_PANIC_TIMEOUT 180
31
32#ifdef CONFIG_PPC_PSERIES
33extern bool pseries_enable_reloc_on_exc(void);
34extern void pseries_disable_reloc_on_exc(void);
35extern void pseries_big_endian_exceptions(void);
36extern void pseries_little_endian_exceptions(void);
37#else
38static inline bool pseries_enable_reloc_on_exc(void) { return false; }
39static inline void pseries_disable_reloc_on_exc(void) {}
40static inline void pseries_big_endian_exceptions(void) {}
41static inline void pseries_little_endian_exceptions(void) {}
42#endif /* CONFIG_PPC_PSERIES */
43
44void rfi_flush_enable(bool enable);
45
46/* These are bit flags */
47enum l1d_flush_type {
48	L1D_FLUSH_NONE		= 0x1,
49	L1D_FLUSH_FALLBACK	= 0x2,
50	L1D_FLUSH_ORI		= 0x4,
51	L1D_FLUSH_MTTRIG	= 0x8,
52};
53
54void setup_rfi_flush(enum l1d_flush_type, bool enable);
55void setup_entry_flush(bool enable);
56void setup_uaccess_flush(bool enable);
57void do_rfi_flush_fixups(enum l1d_flush_type types);
58#ifdef CONFIG_PPC_BARRIER_NOSPEC
59void setup_barrier_nospec(void);
60#else
61static inline void setup_barrier_nospec(void) { };
62#endif
63void do_uaccess_flush_fixups(enum l1d_flush_type types);
64void do_entry_flush_fixups(enum l1d_flush_type types);
65void do_barrier_nospec_fixups(bool enable);
66extern bool barrier_nospec_enabled;
67
68#ifdef CONFIG_PPC_BARRIER_NOSPEC
69void do_barrier_nospec_fixups_range(bool enable, void *start, void *end);
70#else
71static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { };
72#endif
73
74#ifdef CONFIG_PPC_FSL_BOOK3E
75void setup_spectre_v2(void);
76#else
77static inline void setup_spectre_v2(void) {};
78#endif
79void do_btb_flush_fixups(void);
80
81#endif /* !__ASSEMBLY__ */
82
83#endif	/* _ASM_POWERPC_SETUP_H */
84
85