LXR linux/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__
   8extern void ppc_printk_progress(char *s, unsigned short hex);
   9
  10extern unsigned int rtas_data;
  11extern unsigned long long memory_limit;
  12extern bool init_mem_is_free;
  13extern unsigned long klimit;
  14extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
  15
  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
  26void check_for_initrd(void);
  27void mem_topology_setup(void);
  28void initmem_init(void);
  29void setup_panic(void);
  30#define ARCH_PANIC_TIMEOUT 180
  31
  32#ifdef CONFIG_PPC_PSERIES
  33extern bool pseries_enable_reloc_on_exc(void);
  34extern void pseries_disable_reloc_on_exc(void);
  35extern void pseries_big_endian_exceptions(void);
  36extern void pseries_little_endian_exceptions(void);
  37#else
  38static inline bool pseries_enable_reloc_on_exc(void) { return false; }
  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
  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
  54void setup_rfi_flush(enum l1d_flush_type, bool enable);
  55void do_rfi_flush_fixups(enum l1d_flush_type types);
  56#ifdef CONFIG_PPC_BARRIER_NOSPEC
  57void setup_barrier_nospec(void);
  58#else
  59static inline void setup_barrier_nospec(void) { };
  60#endif
  61void do_barrier_nospec_fixups(bool enable);
  62extern bool barrier_nospec_enabled;
  63
  64#ifdef CONFIG_PPC_BARRIER_NOSPEC
  65void do_barrier_nospec_fixups_range(bool enable, void *start, void *end);
  66#else
  67static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { };
  68#endif
  69
  70#ifdef CONFIG_PPC_FSL_BOOK3E
  71void setup_spectre_v2(void);
  72#else
  73static inline void setup_spectre_v2(void) {};
  74#endif
  75void do_btb_flush_fixups(void);
  76
  77#endif /* !__ASSEMBLY__ */
  78
  79#endif  /* _ASM_POWERPC_SETUP_H */
  80
  81