mirror_ubuntu-kernels/drivers/firmware/efi/libstub/x86-stub.h
Ard Biesheuvel db7724134c x86/boot: efistub: Assign global boot_params variable
Now that the x86 EFI stub calls into some APIs exposed by the
decompressor (e.g., kaslr_get_random_long()), it is necessary to ensure
that the global boot_params variable is set correctly before doing so.

Note that the decompressor and the kernel proper carry conflicting
declarations for the global variable 'boot_params' so refer to it via an
alias to work around this.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-10-17 08:33:13 +02:00

18 lines
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C

/* SPDX-License-Identifier: GPL-2.0-only */
#include <linux/efi.h>
extern void trampoline_32bit_src(void *, bool);
extern const u16 trampoline_ljmp_imm_offset;
void efi_adjust_memory_range_protection(unsigned long start,
unsigned long size);
#ifdef CONFIG_X86_64
efi_status_t efi_setup_5level_paging(void);
void efi_5level_switch(void);
#else
static inline efi_status_t efi_setup_5level_paging(void) { return EFI_SUCCESS; }
static inline void efi_5level_switch(void) {}
#endif