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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2015 Linaro Ltd <[email protected]>
- */
- #ifndef __ASM_ARM_EFI_H
- #define __ASM_ARM_EFI_H
- #include <asm/cacheflush.h>
- #include <asm/cachetype.h>
- #include <asm/early_ioremap.h>
- #include <asm/fixmap.h>
- #include <asm/highmem.h>
- #include <asm/mach/map.h>
- #include <asm/mmu_context.h>
- #include <asm/ptrace.h>
- #ifdef CONFIG_EFI
- void efi_init(void);
- void arm_efi_init(void);
- int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
- int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
- #define arch_efi_call_virt_setup() efi_virtmap_load()
- #define arch_efi_call_virt_teardown() efi_virtmap_unload()
- #define ARCH_EFI_IRQ_FLAGS_MASK \
- (PSR_J_BIT | PSR_E_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT | \
- PSR_T_BIT | MODE_MASK)
- static inline void efi_set_pgd(struct mm_struct *mm)
- {
- check_and_switch_context(mm, NULL);
- }
- void efi_virtmap_load(void);
- void efi_virtmap_unload(void);
- #else
- #define arm_efi_init()
- #endif /* CONFIG_EFI */
- /* arch specific definitions used by the stub code */
- struct screen_info *alloc_screen_info(void);
- void free_screen_info(struct screen_info *si);
- /*
- * A reasonable upper bound for the uncompressed kernel size is 32 MBytes,
- * so we will reserve that amount of memory. We have no easy way to tell what
- * the actuall size of code + data the uncompressed kernel will use.
- * If this is insufficient, the decompressor will relocate itself out of the
- * way before performing the decompression.
- */
- #define MAX_UNCOMP_KERNEL_SIZE SZ_32M
- /*
- * phys-to-virt patching requires that the physical to virtual offset is a
- * multiple of 2 MiB. However, using an alignment smaller than TEXT_OFFSET
- * here throws off the memory allocation logic, so let's use the lowest power
- * of two greater than 2 MiB and greater than TEXT_OFFSET.
- */
- #define EFI_PHYS_ALIGN max(UL(SZ_2M), roundup_pow_of_two(TEXT_OFFSET))
- /* on ARM, the initrd should be loaded in a lowmem region */
- static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
- {
- return round_down(image_addr, SZ_4M) + SZ_512M;
- }
- struct efi_arm_entry_state {
- u32 cpsr_before_ebs;
- u32 sctlr_before_ebs;
- u32 cpsr_after_ebs;
- u32 sctlr_after_ebs;
- };
- static inline void efi_capsule_flush_cache_range(void *addr, int size)
- {
- __cpuc_flush_dcache_area(addr, size);
- }
- #endif /* _ASM_ARM_EFI_H */
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