162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASM_POWERPC_SETUP_H 362306a36Sopenharmony_ci#define _ASM_POWERPC_SETUP_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <uapi/asm/setup.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#ifndef __ASSEMBLY__ 862306a36Sopenharmony_ciextern void ppc_printk_progress(char *s, unsigned short hex); 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciextern unsigned long long memory_limit; 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_cistruct device_node; 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci/* Used in very early kernel initialization. */ 1562306a36Sopenharmony_ciextern unsigned long reloc_offset(void); 1662306a36Sopenharmony_ciextern unsigned long add_reloc_offset(unsigned long); 1762306a36Sopenharmony_ciextern void reloc_got2(unsigned long); 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci#define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x))) 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_civoid check_for_initrd(void); 2262306a36Sopenharmony_civoid mem_topology_setup(void); 2362306a36Sopenharmony_civoid initmem_init(void); 2462306a36Sopenharmony_civoid setup_panic(void); 2562306a36Sopenharmony_ci#define ARCH_PANIC_TIMEOUT 180 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci#ifdef CONFIG_PPC_PSERIES 2862306a36Sopenharmony_ciextern bool pseries_reloc_on_exception(void); 2962306a36Sopenharmony_ciextern bool pseries_enable_reloc_on_exc(void); 3062306a36Sopenharmony_ciextern void pseries_disable_reloc_on_exc(void); 3162306a36Sopenharmony_ciextern void pseries_big_endian_exceptions(void); 3262306a36Sopenharmony_civoid __init pseries_little_endian_exceptions(void); 3362306a36Sopenharmony_ci#else 3462306a36Sopenharmony_cistatic inline bool pseries_reloc_on_exception(void) { return false; } 3562306a36Sopenharmony_cistatic inline bool pseries_enable_reloc_on_exc(void) { return false; } 3662306a36Sopenharmony_cistatic inline void pseries_disable_reloc_on_exc(void) {} 3762306a36Sopenharmony_cistatic inline void pseries_big_endian_exceptions(void) {} 3862306a36Sopenharmony_cistatic inline void pseries_little_endian_exceptions(void) {} 3962306a36Sopenharmony_ci#endif /* CONFIG_PPC_PSERIES */ 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_civoid rfi_flush_enable(bool enable); 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ci/* These are bit flags */ 4462306a36Sopenharmony_cienum l1d_flush_type { 4562306a36Sopenharmony_ci L1D_FLUSH_NONE = 0x1, 4662306a36Sopenharmony_ci L1D_FLUSH_FALLBACK = 0x2, 4762306a36Sopenharmony_ci L1D_FLUSH_ORI = 0x4, 4862306a36Sopenharmony_ci L1D_FLUSH_MTTRIG = 0x8, 4962306a36Sopenharmony_ci}; 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_civoid setup_rfi_flush(enum l1d_flush_type, bool enable); 5262306a36Sopenharmony_civoid setup_entry_flush(bool enable); 5362306a36Sopenharmony_civoid setup_uaccess_flush(bool enable); 5462306a36Sopenharmony_civoid do_rfi_flush_fixups(enum l1d_flush_type types); 5562306a36Sopenharmony_ci#ifdef CONFIG_PPC_BARRIER_NOSPEC 5662306a36Sopenharmony_civoid __init setup_barrier_nospec(void); 5762306a36Sopenharmony_ci#else 5862306a36Sopenharmony_cistatic inline void setup_barrier_nospec(void) { } 5962306a36Sopenharmony_ci#endif 6062306a36Sopenharmony_civoid do_uaccess_flush_fixups(enum l1d_flush_type types); 6162306a36Sopenharmony_civoid do_entry_flush_fixups(enum l1d_flush_type types); 6262306a36Sopenharmony_civoid do_barrier_nospec_fixups(bool enable); 6362306a36Sopenharmony_ciextern bool barrier_nospec_enabled; 6462306a36Sopenharmony_ci 6562306a36Sopenharmony_ci#ifdef CONFIG_PPC_BARRIER_NOSPEC 6662306a36Sopenharmony_civoid do_barrier_nospec_fixups_range(bool enable, void *start, void *end); 6762306a36Sopenharmony_ci#else 6862306a36Sopenharmony_cistatic inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { } 6962306a36Sopenharmony_ci#endif 7062306a36Sopenharmony_ci 7162306a36Sopenharmony_ci#ifdef CONFIG_PPC_E500 7262306a36Sopenharmony_civoid __init setup_spectre_v2(void); 7362306a36Sopenharmony_ci#else 7462306a36Sopenharmony_cistatic inline void setup_spectre_v2(void) {} 7562306a36Sopenharmony_ci#endif 7662306a36Sopenharmony_civoid __init do_btb_flush_fixups(void); 7762306a36Sopenharmony_ci 7862306a36Sopenharmony_ci#ifdef CONFIG_PPC32 7962306a36Sopenharmony_ciunsigned long __init early_init(unsigned long dt_ptr); 8062306a36Sopenharmony_civoid __init machine_init(u64 dt_ptr); 8162306a36Sopenharmony_ci#endif 8262306a36Sopenharmony_civoid __init early_setup(unsigned long dt_ptr); 8362306a36Sopenharmony_civoid early_setup_secondary(void); 8462306a36Sopenharmony_ci 8562306a36Sopenharmony_ci/* prom_init (OpenFirmware) */ 8662306a36Sopenharmony_ciunsigned long __init prom_init(unsigned long r3, unsigned long r4, 8762306a36Sopenharmony_ci unsigned long pp, unsigned long r6, 8862306a36Sopenharmony_ci unsigned long r7, unsigned long kbase); 8962306a36Sopenharmony_ci 9062306a36Sopenharmony_ciextern struct seq_buf ppc_hw_desc; 9162306a36Sopenharmony_ci 9262306a36Sopenharmony_ci#endif /* !__ASSEMBLY__ */ 9362306a36Sopenharmony_ci 9462306a36Sopenharmony_ci#endif /* _ASM_POWERPC_SETUP_H */ 9562306a36Sopenharmony_ci 96