include/asm/efi.h

1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <asm/processor-flags.h>
8 #include <asm/nospec-branch.h>
19  * We map the EFI regions needed for runtime services non-contiguously,
20  * with preserved alignment on virtual addresses starting from -4G down
38  * functions are implemented in assembler and support only a fixed number of
45  * pre-defined limit. The maximum number of arguments currently supported by
80 	 * that FCW and MXCSR (64-bit) must be initialized prior to calling  in efi_fpu_begin()
93 #define EFI_X86_KERNEL_ALLOC_LIMIT		(SZ_512M - 1)
109 	ret = efi_call((void *)p->f, args);				\
202 	(efi_is_native() ? (inst)->attr					\
206 	(__typeof__(inst->attr))					\
207 		_Generic(inst->mixed_mode.attr,				\
208 		u32:		(unsigned long)(inst->mixed_mode.attr),	\
209 		default:	(inst->mixed_mode.attr))
214  * output parameters, and where the 32-bit method requires a 64-bit argument,
219  * that the full 64-bit address is initialized, we zero-init the address before
222  * The FreePages boot service takes a 64-bit physical address even in 32-bit
223  * mode. For the thunk to work correctly, a native 64-bit call of
227  * so that the two 32-bit halves of addr get pushed onto the stack separately.
253 #define __efi64_argmap_create_event(type, tpl, f, c, event)		\  argument
254 	((type), (tpl), (f), (c), efi64_zero_upper(event))
330 	efi64_thunk(inst->mixed_mode.func,				\
351 	(efi_is_native() ? (inst)->func(__VA_ARGS__)			\
355 	_Generic(inst->func(__VA_ARGS__),				\
361 		(__typeof__(inst->func(__VA_ARGS__)))			\