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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / 9a32a7e78bd0cd9a9b6332cbdc345ee5ffd0c5de / . / arch / powerpc / include / asm / setup.h
blob: a466749703f1fbde304ea51df8abd21d60c82d28 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
Anton Blanchard560285c2012-11-01 14:55:04 +0000[diff] [blame]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;
Anton Blanchard560285c2012-11-01 14:55:04 +0000[diff] [blame]11extern unsigned long long memory_limit;
Michael Neuling51c3c622018-09-14 11:14:11 +1000[diff] [blame]12extern bool init_mem_is_free;
Anton Blanchard560285c2012-11-01 14:55:04 +0000[diff] [blame]13extern unsigned long klimit;
14extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
15
Anton Blanchard560285c2012-11-01 14:55:04 +0000[diff] [blame]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
Robert Jenningsb88c4762013-10-28 09:20:51 -0500[diff] [blame]26void check_for_initrd(void);
Nicholas Piggin9bd9be02018-02-14 01:08:16 +1000[diff] [blame]27void mem_topology_setup(void);
Anton Blanchard10239732014-09-17 22:15:33 +1000[diff] [blame]28void initmem_init(void);
David Gibsonab9dbf72017-12-04 16:27:25 +1100[diff] [blame]29void setup_panic(void);
Jason Baronb71d47c2013-11-25 23:23:11 +0000[diff] [blame]30#define ARCH_PANIC_TIMEOUT 180
Robert Jenningsb88c4762013-10-28 09:20:51 -0500[diff] [blame]31
Benjamin Herrenschmidtd3cbff12016-07-05 15:03:49 +1000[diff] [blame]32#ifdef CONFIG_PPC_PSERIES
Nicholas Piggin7fa95f92020-06-11 18:12:03 +1000[diff] [blame]33extern bool pseries_enable_reloc_on_exc(void);
Benjamin Herrenschmidtd3cbff12016-07-05 15:03:49 +1000[diff] [blame]34extern void pseries_disable_reloc_on_exc(void);
35extern void pseries_big_endian_exceptions(void);
36extern void pseries_little_endian_exceptions(void);
37#else
Nicholas Piggin7fa95f92020-06-11 18:12:03 +1000[diff] [blame]38static inline bool pseries_enable_reloc_on_exc(void) { return false; }
Benjamin Herrenschmidtd3cbff12016-07-05 15:03:49 +1000[diff] [blame]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
Michael Ellermanaa8a5e02018-01-10 03:07:15 +1100[diff] [blame]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
Michael Ellermanabf110f2018-03-14 19:40:39 -0300[diff] [blame]54void setup_rfi_flush(enum l1d_flush_type, bool enable);
Nicholas Pigginf7964372020-11-17 16:59:12 +1100[diff] [blame]55void setup_entry_flush(bool enable);
56void setup_uaccess_flush(bool enable);
Michael Ellermanaa8a5e02018-01-10 03:07:15 +1100[diff] [blame]57void do_rfi_flush_fixups(enum l1d_flush_type types);
Michael Ellermanaf375ee2018-07-28 09:06:35 +1000[diff] [blame]58#ifdef CONFIG_PPC_BARRIER_NOSPEC
Michal Suchanekcb3d6752018-04-24 14:15:57 +1000[diff] [blame]59void setup_barrier_nospec(void);
Michael Ellermanaf375ee2018-07-28 09:06:35 +1000[diff] [blame]60#else
61static inline void setup_barrier_nospec(void) { };
62#endif
Nicholas Piggin9a32a7e2020-11-17 16:59:13 +1100[diff] [blame^]63void do_uaccess_flush_fixups(enum l1d_flush_type types);
Nicholas Pigginf7964372020-11-17 16:59:12 +1100[diff] [blame]64void do_entry_flush_fixups(enum l1d_flush_type types);
Michal Suchanek2eea7f02018-04-24 14:15:55 +1000[diff] [blame]65void do_barrier_nospec_fixups(bool enable);
Michal Suchanek815069c2018-04-24 14:15:56 +1000[diff] [blame]66extern bool barrier_nospec_enabled;
67
Michael Ellerman179ab1c2018-07-28 09:06:34 +1000[diff] [blame]68#ifdef CONFIG_PPC_BARRIER_NOSPEC
Michal Suchanek815069c2018-04-24 14:15:56 +1000[diff] [blame]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
Michael Ellermanaa8a5e02018-01-10 03:07:15 +1100[diff] [blame]73
Diana Craciunf633a8a2018-12-12 16:03:04 +0200[diff] [blame]74#ifdef CONFIG_PPC_FSL_BOOK3E
75void setup_spectre_v2(void);
76#else
77static inline void setup_spectre_v2(void) {};
78#endif
Diana Craciun76a5eaa2018-12-12 16:03:00 +0200[diff] [blame]79void do_btb_flush_fixups(void);
80
Anton Blanchard560285c2012-11-01 14:55:04 +0000[diff] [blame]81#endif /* !__ASSEMBLY__ */
82
83#endif /* _ASM_POWERPC_SETUP_H */
84