write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/powerpc/mm/mmu_decl.h
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@@ -1,3 +1,4 @@
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+/* 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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@@ -11,17 +12,12 @@
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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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- *  This program is free software; you can redistribute it and/or
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- *  modify it under the terms of the GNU General Public License
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- *  as published by the Free Software Foundation; either version
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- *  2 of the License, or (at your option) any later version.
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- *
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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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@@ -30,10 +26,12 @@
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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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@@ -55,6 +53,7 @@
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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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@@ -79,18 +78,20 @@
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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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+
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 #else /* CONFIG_PPC_MMU_NOHASH */
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-
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-extern void hash_preload(struct mm_struct *mm, unsigned long ea,
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-			 unsigned long access, unsigned long trap);
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-
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 extern void _tlbie(unsigned long address);
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 extern void _tlbia(void);
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+void print_system_hash_info(void);
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+
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 #endif /* CONFIG_PPC_MMU_NOHASH */
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 #ifdef CONFIG_PPC32
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+
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+void hash_preload(struct mm_struct *mm, unsigned long ea);
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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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@@ -100,12 +101,11 @@
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 extern unsigned int rtas_data, rtas_size;
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 struct hash_pte;
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-extern struct hash_pte *Hash, *Hash_end;
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-extern unsigned long Hash_size, Hash_mask;
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+extern struct hash_pte *Hash;
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+extern u8 early_hash[];
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 #endif /* CONFIG_PPC32 */
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-extern unsigned long ioremap_bot;
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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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@@ -126,7 +126,8 @@
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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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-extern unsigned long mmu_mapin_ram(unsigned long top);
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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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@@ -138,9 +139,20 @@
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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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+
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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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@@ -151,7 +163,7 @@
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 };
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 #endif
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-#if defined(CONFIG_6xx) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx)
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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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@@ -161,3 +173,21 @@
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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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+
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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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+
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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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+
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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