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