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