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https://gitee.com/bianbu-linux/linux-6.6
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c45647f9f5
- Rework phys/virt translation - Add KASan support - Move DT out of linear map region - Use more PC-relative addressing in assembly - Remove FP emulation handling while in kernel mode - Link with '-z norelro' - remove old check for GCC <= 4.2 in ARM unwinder code - disable big endian if using clang's linker -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAl/ghq0ACgkQ9OeQG+St rGQXsxAAilC+P06NRN3etSFOnJH8GzGNu89wbVW/0lft89o+EpN8oZ9kEYRdb4d1 AJ1z4kGN0akKKNWWeg+1c2YzXh4xGvT1th1TzbBpCf8BxoMHFCSS1IZ98LZ3iiqy bpMRpq2LJG+Va/5lkPnkY7e2sL9Jj5BxFdHAYUUg1Ipc0tfh7hXWLnRMohE1EYmu E69AHTfyWs9ojgspCSg3KoUQ3eXUiaBslf8U4/zFhtmA9lwiOOozZ4ZRRgDWqI75 bp6pGzxpqXIFdD1QyThgSb3gvVBahbsYN7kj1fmD5LokBVWxHawCyzkCzNzKEfDL ES+gc/wTewxwN928cjB5vfmOrAvd1T6amh/gsr39WnOIFngEPAGMBfApXAzhffsc L5TYaDI3DNbQ75FCySfVV2VwQhSW03XQHYtElVxzc2Z1Q1Q9yoscqLzgHDgDy3LM 8s4CRviVtOzP9e/rNx48lUxgdQHmAjQ+dI4Y9NVxyphQzK0LLTv5Uc4zy/nG0F27 QIFtGCDz3PHDPWLzGBudYcu9HAqwXVhZXf9pMeYgwgvmqBdz0BFbXhEbZaup6oDl H5k4iAZh3ADW38+8Vhp/D7CGDhznZm2dFNrgreJm2tHTEwd5xgpsUj1MaAMCcPbr HTxiy0i4p9wN1jl9iWFD4A3/KsBvAIJFB+wqqJOyWku0FikntjU= =fZGX -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux Pull ARM updates from Russell King: - Rework phys/virt translation - Add KASan support - Move DT out of linear map region - Use more PC-relative addressing in assembly - Remove FP emulation handling while in kernel mode - Link with '-z norelro' - remove old check for GCC <= 4.2 in ARM unwinder code - disable big endian if using clang's linker * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (46 commits) ARM: 9027/1: head.S: explicitly map DT even if it lives in the first physical section ARM: 9038/1: Link with '-z norelro' ARM: 9037/1: uncompress: Add OF_DT_MAGIC macro ARM: 9036/1: uncompress: Fix dbgadtb size parameter name ARM: 9035/1: uncompress: Add be32tocpu macro ARM: 9033/1: arm/smp: Drop the macro S(x,s) ARM: 9032/1: arm/mm: Convert PUD level pgtable helper macros into functions ARM: 9031/1: hyp-stub: remove unused .L__boot_cpu_mode_offset symbol ARM: 9044/1: vfp: use undef hook for VFP support detection ARM: 9034/1: __div64_32(): straighten up inline asm constraints ARM: 9030/1: entry: omit FP emulation for UND exceptions taken in kernel mode ARM: 9029/1: Make iwmmxt.S support Clang's integrated assembler ARM: 9028/1: disable KASAN in call stack capturing routines ARM: 9026/1: unwind: remove old check for GCC <= 4.2 ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD ARM: 9024/1: Drop useless cast of "u64" to "long long" ARM: 9023/1: Spelling s/mmeory/memory/ ARM: 9022/1: Change arch/arm/lib/mem*.S to use WEAK instead of .weak ARM: kvm: replace open coded VA->PA calculations with adr_l call ARM: head.S: use PC relative insn sequence to calculate PHYS_OFFSET ...
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_FIXMAP_H
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#define _ASM_FIXMAP_H
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#define FIXADDR_START 0xffc80000UL
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#define FIXADDR_END 0xfff00000UL
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#define FIXADDR_TOP (FIXADDR_END - PAGE_SIZE)
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#include <linux/pgtable.h>
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#include <asm/kmap_size.h>
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enum fixed_addresses {
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FIX_EARLYCON_MEM_BASE,
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__end_of_permanent_fixed_addresses,
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FIX_KMAP_BEGIN = __end_of_permanent_fixed_addresses,
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FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1,
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/* Support writing RO kernel text via kprobes, jump labels, etc. */
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FIX_TEXT_POKE0,
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FIX_TEXT_POKE1,
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__end_of_fixmap_region,
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/*
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* Share the kmap() region with early_ioremap(): this is guaranteed
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* not to clash since early_ioremap() is only available before
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* paging_init(), and kmap() only after.
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*/
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#define NR_FIX_BTMAPS 32
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#define FIX_BTMAPS_SLOTS 7
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#define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS)
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FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
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FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
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__end_of_early_ioremap_region
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};
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static const enum fixed_addresses __end_of_fixed_addresses =
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__end_of_fixmap_region > __end_of_early_ioremap_region ?
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__end_of_fixmap_region : __end_of_early_ioremap_region;
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#define FIXMAP_PAGE_COMMON (L_PTE_YOUNG | L_PTE_PRESENT | L_PTE_XN | L_PTE_DIRTY)
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#define FIXMAP_PAGE_NORMAL (pgprot_kernel | L_PTE_XN)
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#define FIXMAP_PAGE_RO (FIXMAP_PAGE_NORMAL | L_PTE_RDONLY)
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/* Used by set_fixmap_(io|nocache), both meant for mapping a device */
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#define FIXMAP_PAGE_IO (FIXMAP_PAGE_COMMON | L_PTE_MT_DEV_SHARED | L_PTE_SHARED)
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#define FIXMAP_PAGE_NOCACHE FIXMAP_PAGE_IO
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#define __early_set_fixmap __set_fixmap
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#ifdef CONFIG_MMU
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void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
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void __init early_fixmap_init(void);
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#include <asm-generic/fixmap.h>
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#else
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static inline void early_fixmap_init(void) { }
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#endif
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#endif
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