1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#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/pgtable.h>
#include <asm/ptrace.h>
#ifdef CONFIG_EFI
void 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_call_virt(p, f, args...) \
({ \
efi_##f##_t *__f; \
__f = p->f; \
__f(args); \
})
#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 efi_init()
#endif /* CONFIG_EFI */
/* arch specific definitions used by the stub code */
#define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__)
#define __efi_call_early(f, ...) f(__VA_ARGS__)
#define efi_call_runtime(f, ...) sys_table_arg->runtime->f(__VA_ARGS__)
#define efi_is_64bit() (false)
#define efi_call_proto(protocol, f, instance, ...) \
((protocol##_t *)instance)->f(instance, ##__VA_ARGS__)
struct screen_info *alloc_screen_info(efi_system_table_t *sys_table_arg);
void free_screen_info(efi_system_table_t *sys_table, struct screen_info *si);
static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
{
}
/*
* 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
/*
* The kernel zImage should preferably be located between 32 MB and 128 MB
* from the base of DRAM. The min address leaves space for a maximal size
* uncompressed image, and the max address is due to how the zImage decompressor
* picks a destination address.
*/
#define ZIMAGE_OFFSET_LIMIT SZ_128M
#define MIN_ZIMAGE_OFFSET MAX_UNCOMP_KERNEL_SIZE
/* on ARM, the FDT should be located in the first 128 MB of RAM */
static inline unsigned long efi_get_max_fdt_addr(unsigned long dram_base)
{
return dram_base + ZIMAGE_OFFSET_LIMIT;
}
/* on ARM, the initrd should be loaded in a lowmem region */
static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
unsigned long image_addr)
{
return dram_base + SZ_512M;
}
#endif /* _ASM_ARM_EFI_H */
|
