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