84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
|
|
* 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>
|
|
|
|
#ifdef CONFIG_EFI
|
|
void efi_init(void);
|
|
|
|
int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
|
|
|
|
#define efi_call_virt(f, ...) \
|
|
({ \
|
|
efi_##f##_t *__f; \
|
|
efi_status_t __s; \
|
|
\
|
|
efi_virtmap_load(); \
|
|
__f = efi.systab->runtime->f; \
|
|
__s = __f(__VA_ARGS__); \
|
|
efi_virtmap_unload(); \
|
|
__s; \
|
|
})
|
|
|
|
#define __efi_call_virt(f, ...) \
|
|
({ \
|
|
efi_##f##_t *__f; \
|
|
\
|
|
efi_virtmap_load(); \
|
|
__f = efi.systab->runtime->f; \
|
|
__f(__VA_ARGS__); \
|
|
efi_virtmap_unload(); \
|
|
})
|
|
|
|
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__)
|
|
|
|
/*
|
|
* 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
|
|
#define MAX_FDT_OFFSET ZIMAGE_OFFSET_LIMIT
|
|
|
|
#endif /* _ASM_ARM_EFI_H */
|