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ca5999fde0
The include/linux/pgtable.h is going to be the home of generic page table manipulation functions. Start with moving asm-generic/pgtable.h to include/linux/pgtable.h and make the latter include asm/pgtable.h. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
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*/
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#ifndef __ASM_ARM_EFI_H
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#define __ASM_ARM_EFI_H
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#include <asm/cacheflush.h>
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#include <asm/cachetype.h>
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#include <asm/early_ioremap.h>
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#include <asm/fixmap.h>
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#include <asm/highmem.h>
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#include <asm/mach/map.h>
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#include <asm/mmu_context.h>
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#include <linux/pgtable.h>
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#include <asm/ptrace.h>
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#ifdef CONFIG_EFI
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void efi_init(void);
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int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
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int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
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#define arch_efi_call_virt_setup() efi_virtmap_load()
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#define arch_efi_call_virt_teardown() efi_virtmap_unload()
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#define arch_efi_call_virt(p, f, args...) \
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({ \
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efi_##f##_t *__f; \
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__f = p->f; \
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__f(args); \
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})
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#define ARCH_EFI_IRQ_FLAGS_MASK \
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(PSR_J_BIT | PSR_E_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT | \
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PSR_T_BIT | MODE_MASK)
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static inline void efi_set_pgd(struct mm_struct *mm)
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{
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check_and_switch_context(mm, NULL);
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}
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void efi_virtmap_load(void);
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void efi_virtmap_unload(void);
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#else
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#define efi_init()
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#endif /* CONFIG_EFI */
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/* arch specific definitions used by the stub code */
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struct screen_info *alloc_screen_info(void);
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void free_screen_info(struct screen_info *si);
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static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
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{
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}
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/*
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* A reasonable upper bound for the uncompressed kernel size is 32 MBytes,
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* so we will reserve that amount of memory. We have no easy way to tell what
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* the actuall size of code + data the uncompressed kernel will use.
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* If this is insufficient, the decompressor will relocate itself out of the
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* way before performing the decompression.
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*/
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#define MAX_UNCOMP_KERNEL_SIZE SZ_32M
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/*
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* The kernel zImage should preferably be located between 32 MB and 128 MB
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* from the base of DRAM. The min address leaves space for a maximal size
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* uncompressed image, and the max address is due to how the zImage decompressor
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* picks a destination address.
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*/
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#define ZIMAGE_OFFSET_LIMIT SZ_128M
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#define MIN_ZIMAGE_OFFSET MAX_UNCOMP_KERNEL_SIZE
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/* on ARM, the FDT should be located in the first 128 MB of RAM */
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static inline unsigned long efi_get_max_fdt_addr(unsigned long dram_base)
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{
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return dram_base + ZIMAGE_OFFSET_LIMIT;
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}
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/* on ARM, the initrd should be loaded in a lowmem region */
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static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
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unsigned long image_addr)
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{
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return dram_base + SZ_512M;
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}
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#endif /* _ASM_ARM_EFI_H */
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