projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| da58fb65 AB |
1 | /* |
| 2 | * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef __ASM_ARM_EFI_H | |
| 10 | #define __ASM_ARM_EFI_H | |
| 11 | ||
| 12 | #include <asm/cacheflush.h> | |
| 13 | #include <asm/cachetype.h> | |
| 14 | #include <asm/early_ioremap.h> | |
| 15 | #include <asm/fixmap.h> | |
| 16 | #include <asm/highmem.h> | |
| 17 | #include <asm/mach/map.h> | |
| 18 | #include <asm/mmu_context.h> | |
| 19 | #include <asm/pgtable.h> | |
| 20 | ||
| 21 | #ifdef CONFIG_EFI | |
| 22 | void efi_init(void); | |
| 23 | ||
| 24 | int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md); | |
| 25 | ||
| 26 | #define efi_call_virt(f, ...) \ | |
| 27 | ({ \ | |
| 28 | efi_##f##_t *__f; \ | |
| 29 | efi_status_t __s; \ | |
| 30 | \ | |
| 31 | efi_virtmap_load(); \ | |
| 32 | __f = efi.systab->runtime->f; \ | |
| 33 | __s = __f(__VA_ARGS__); \ | |
| 34 | efi_virtmap_unload(); \ | |
| 35 | __s; \ | |
| 36 | }) | |
| 37 | ||
| 38 | #define __efi_call_virt(f, ...) \ | |
| 39 | ({ \ | |
| 40 | efi_##f##_t *__f; \ | |
| 41 | \ | |
| 42 | efi_virtmap_load(); \ | |
| 43 | __f = efi.systab->runtime->f; \ | |
| 44 | __f(__VA_ARGS__); \ | |
| 45 | efi_virtmap_unload(); \ | |
| 46 | }) | |
| 47 | ||
| 48 | static inline void efi_set_pgd(struct mm_struct *mm) | |
| 49 | { | |
| 50 | check_and_switch_context(mm, NULL); | |
| 51 | } | |
| 52 | ||
| 53 | void efi_virtmap_load(void); | |
| 54 | void efi_virtmap_unload(void); | |
| 55 | ||
| 56 | #else | |
| 57 | #define efi_init() | |
| 58 | #endif /* CONFIG_EFI */ | |
| 59 | ||
| 81a0bc39 RF |
60 | /* arch specific definitions used by the stub code */ |
| 61 | ||
| 62 | #define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__) | |
| 63 | ||
| 64 | /* | |
| 65 | * A reasonable upper bound for the uncompressed kernel size is 32 MBytes, | |
| 66 | * so we will reserve that amount of memory. We have no easy way to tell what | |
| 67 | * the actuall size of code + data the uncompressed kernel will use. | |
| 68 | * If this is insufficient, the decompressor will relocate itself out of the | |
| 69 | * way before performing the decompression. | |
| 70 | */ | |
| 71 | #define MAX_UNCOMP_KERNEL_SIZE SZ_32M | |
| 72 | ||
| 73 | /* | |
| 74 | * The kernel zImage should preferably be located between 32 MB and 128 MB | |
| 75 | * from the base of DRAM. The min address leaves space for a maximal size | |
| 76 | * uncompressed image, and the max address is due to how the zImage decompressor | |
| 77 | * picks a destination address. | |
| 78 | */ | |
| 79 | #define ZIMAGE_OFFSET_LIMIT SZ_128M | |
| 80 | #define MIN_ZIMAGE_OFFSET MAX_UNCOMP_KERNEL_SIZE | |
| 81 | #define MAX_FDT_OFFSET ZIMAGE_OFFSET_LIMIT | |
| 82 | ||
| da58fb65 | 83 | #endif /* _ASM_ARM_EFI_H */ |