]>
git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - arch/arm/kernel/efi.c
2 * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
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.
11 #include <asm/mach/map.h>
12 #include <asm/mmu_context.h>
14 int __init
efi_create_mapping(struct mm_struct
*mm
, efi_memory_desc_t
*md
)
16 struct map_desc desc
= {
17 .virtual = md
->virt_addr
,
18 .pfn
= __phys_to_pfn(md
->phys_addr
),
19 .length
= md
->num_pages
* EFI_PAGE_SIZE
,
23 * Order is important here: memory regions may have all of the
24 * bits below set (and usually do), so we check them in order of
27 if (md
->attribute
& EFI_MEMORY_WB
)
28 desc
.type
= MT_MEMORY_RWX
;
29 else if (md
->attribute
& EFI_MEMORY_WT
)
30 desc
.type
= MT_MEMORY_RWX_NONCACHED
;
31 else if (md
->attribute
& EFI_MEMORY_WC
)
32 desc
.type
= MT_DEVICE_WC
;
34 desc
.type
= MT_DEVICE
;
36 create_mapping_late(mm
, &desc
, true);