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__
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 /* !__ASSEMBLY__ */
93
94 #endif /* _ASM_POWERPC_SETUP_H */
95
96
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