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192 lines
5.3 KiB
192 lines
5.3 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Declarations of procedures and variables shared between files |
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* in arch/ppc/mm/. |
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* |
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* Derived from arch/ppc/mm/init.c: |
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* Copyright (C) 1995-1996 Gary Thomas ([email protected]) |
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* |
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* Modifications by Paul Mackerras (PowerMac) ([email protected]) |
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* and Cort Dougan (PReP) ([email protected]) |
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* Copyright (C) 1996 Paul Mackerras |
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* |
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* Derived from "arch/i386/mm/init.c" |
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* Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds |
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*/ |
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#include <linux/mm.h> |
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#include <asm/mmu.h> |
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#ifdef CONFIG_PPC_MMU_NOHASH |
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#include <asm/trace.h> |
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/* |
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* On 40x and 8xx, we directly inline tlbia and tlbivax |
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*/ |
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#if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx) |
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static inline void _tlbil_all(void) |
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{ |
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asm volatile ("sync; tlbia; isync" : : : "memory"); |
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trace_tlbia(MMU_NO_CONTEXT); |
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} |
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static inline void _tlbil_pid(unsigned int pid) |
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{ |
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asm volatile ("sync; tlbia; isync" : : : "memory"); |
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trace_tlbia(pid); |
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} |
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#define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
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#else /* CONFIG_40x || CONFIG_PPC_8xx */ |
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extern void _tlbil_all(void); |
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extern void _tlbil_pid(unsigned int pid); |
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#ifdef CONFIG_PPC_BOOK3E |
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extern void _tlbil_pid_noind(unsigned int pid); |
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#else |
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#define _tlbil_pid_noind(pid) _tlbil_pid(pid) |
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#endif |
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#endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */ |
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/* |
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* On 8xx, we directly inline tlbie, on others, it's extern |
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*/ |
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#ifdef CONFIG_PPC_8xx |
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static inline void _tlbil_va(unsigned long address, unsigned int pid, |
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unsigned int tsize, unsigned int ind) |
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{ |
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asm volatile ("tlbie %0; sync" : : "r" (address) : "memory"); |
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trace_tlbie(0, 0, address, pid, 0, 0, 0); |
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} |
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#elif defined(CONFIG_PPC_BOOK3E) |
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extern void _tlbil_va(unsigned long address, unsigned int pid, |
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unsigned int tsize, unsigned int ind); |
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#else |
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extern void __tlbil_va(unsigned long address, unsigned int pid); |
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static inline void _tlbil_va(unsigned long address, unsigned int pid, |
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unsigned int tsize, unsigned int ind) |
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{ |
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__tlbil_va(address, pid); |
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} |
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#endif /* CONFIG_PPC_8xx */ |
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#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x) |
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extern void _tlbivax_bcast(unsigned long address, unsigned int pid, |
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unsigned int tsize, unsigned int ind); |
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#else |
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static inline void _tlbivax_bcast(unsigned long address, unsigned int pid, |
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unsigned int tsize, unsigned int ind) |
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{ |
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BUG(); |
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} |
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#endif |
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static inline void print_system_hash_info(void) {} |
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#else /* CONFIG_PPC_MMU_NOHASH */ |
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void print_system_hash_info(void); |
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#endif /* CONFIG_PPC_MMU_NOHASH */ |
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#ifdef CONFIG_PPC32 |
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extern void mapin_ram(void); |
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extern void setbat(int index, unsigned long virt, phys_addr_t phys, |
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unsigned int size, pgprot_t prot); |
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extern int __map_without_bats; |
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extern unsigned int rtas_data, rtas_size; |
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struct hash_pte; |
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extern u8 early_hash[]; |
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#endif /* CONFIG_PPC32 */ |
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extern unsigned long __max_low_memory; |
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extern phys_addr_t __initial_memory_limit_addr; |
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extern phys_addr_t total_memory; |
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extern phys_addr_t total_lowmem; |
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extern phys_addr_t memstart_addr; |
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extern phys_addr_t lowmem_end_addr; |
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#ifdef CONFIG_WII |
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extern unsigned long wii_hole_start; |
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extern unsigned long wii_hole_size; |
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extern unsigned long wii_mmu_mapin_mem2(unsigned long top); |
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extern void wii_memory_fixups(void); |
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#endif |
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/* ...and now those things that may be slightly different between processor |
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* architectures. -- Dan |
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*/ |
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#ifdef CONFIG_PPC32 |
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extern void MMU_init_hw(void); |
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void MMU_init_hw_patch(void); |
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unsigned long mmu_mapin_ram(unsigned long base, unsigned long top); |
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#endif |
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#ifdef CONFIG_PPC_FSL_BOOK3E |
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extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, |
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bool dryrun); |
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extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, |
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phys_addr_t phys); |
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#ifdef CONFIG_PPC32 |
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extern void adjust_total_lowmem(void); |
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extern int switch_to_as1(void); |
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extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu); |
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void create_kaslr_tlb_entry(int entry, unsigned long virt, phys_addr_t phys); |
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void reloc_kernel_entry(void *fdt, int addr); |
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extern int is_second_reloc; |
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#endif |
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extern void loadcam_entry(unsigned int index); |
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extern void loadcam_multi(int first_idx, int num, int tmp_idx); |
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#ifdef CONFIG_RANDOMIZE_BASE |
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void kaslr_early_init(void *dt_ptr, phys_addr_t size); |
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void kaslr_late_init(void); |
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#else |
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static inline void kaslr_early_init(void *dt_ptr, phys_addr_t size) {} |
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static inline void kaslr_late_init(void) {} |
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#endif |
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struct tlbcam { |
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u32 MAS0; |
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u32 MAS1; |
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unsigned long MAS2; |
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u32 MAS3; |
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u32 MAS7; |
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}; |
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#endif |
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#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx) |
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/* 6xx have BATS */ |
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/* FSL_BOOKE have TLBCAM */ |
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/* 8xx have LTLB */ |
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phys_addr_t v_block_mapped(unsigned long va); |
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unsigned long p_block_mapped(phys_addr_t pa); |
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#else |
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static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; } |
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static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; } |
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#endif |
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#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_8xx) |
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void mmu_mark_initmem_nx(void); |
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void mmu_mark_rodata_ro(void); |
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#else |
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static inline void mmu_mark_initmem_nx(void) { } |
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static inline void mmu_mark_rodata_ro(void) { } |
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#endif |
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#ifdef CONFIG_PPC_8xx |
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void __init mmu_mapin_immr(void); |
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#endif |
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#ifdef CONFIG_PPC_DEBUG_WX |
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void ptdump_check_wx(void); |
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#else |
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static inline void ptdump_check_wx(void) { } |
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#endif |
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static inline bool debug_pagealloc_enabled_or_kfence(void) |
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{ |
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return IS_ENABLED(CONFIG_KFENCE) || debug_pagealloc_enabled(); |
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}
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