arch/powerpc/include/asm/setup.h

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