efi: major refactoring, fix portability

features.in/efi/config.mk

+EFI_ARCHES := x86_64 aarch64
+
 +efi: use/efi/signed; @:
 
-ifeq (x86_64,$(ARCH))
+ifeq (,$(filter-out $(EFI_ARCHES),$(ARCH)))
 
 EFI_LISTS := $(call tags,base efi)
 
 use/efi:
 	@$(call add_feature)
 	@$(call set,MKI_VER_MINIMAL,0.2.12)	# it's official now
+	@$(call set,MKI_VER_OPTIMAL,0.2.17)	# for EFI_BOOTARGS
+ifeq (x86_64,$(ARCH))
+	@$(call try,EFI_BOOTLOADER,elilo)	# default one
+else
+	@$(call try,EFI_BOOTLOADER,grub-efi)	# default one
+endif
+	@$(call add,THE_PACKAGES,$$(EFI_BOOTLOADER))
+	@$(call xport,EFI_BOOTLOADER)
 	@$(call add,THE_LISTS,$(EFI_LISTS))
-	@$(call add,RESCUE_LISTS,$(EFI_LISTS))
 	@$(call add,THE_PACKAGES,$$(EFI_SHELL))
-	@$(call add,RESCUE_PACKAGES,refind $$(EFI_SHELL))
+ifeq (distro,$(IMAGE_CLASS))
+	@$(call add,THE_PACKAGES,installer-feature-efi-stage3)
+	@$(call add,RESCUE_LISTS,$(EFI_LISTS))
+	@$(call add,RESCUE_PACKAGES,refind $$(EFI_SHELL) $$(EFI_BOOTLOADER))
 	@$(call add,INSTALL2_PACKAGES,dosfstools fatresize)
-	@$(call try,EFI_BOOTLOADER,elilo)	# default one
 	@$(call add,STAGE1_KCONFIG,EFI EFI_PARTITION EFI_VARS FB_EFI)
-	@$(call set,MKI_VER_OPTIMAL,0.2.17)	# for EFI_BOOTARGS
 	@$(call add,EFI_BOOTARGS,$$(STAGE2_BOOTARGS))
-
-use/efi/refind: use/efi
-	@$(call set,EFI_BOOTLOADER,refind)
+endif
 
 use/efi/signed: use/efi
 	@$(call set,EFI_CERT,altlinux)
@@ -28,11 +36,32 @@ use/efi/signed: use/efi
 use/efi/shell: use/efi
 	@$(call try,EFI_SHELL,efi-shell)
 
+use/efi/grub: use/efi use/bootloader/grub
+	@$(call set,EFI_BOOTLOADER,grub-efi)
+
+ifeq (x86_64,$(ARCH))
+
+use/efi/lilo: use/efi use/bootloader/lilo
+	@$(call set,EFI_BOOTLOADER,elilo)
+
+use/efi/refind: use/efi
+	@$(call set,EFI_BOOTLOADER,refind)
+
 use/efi/memtest86: use/efi/refind
 	@$(call set,EFI_MEMTEST86,efi-memtest86)
 
+else
+
+use/efi/refind use/efi/memtest86 use/efi/lilo: use/efi; @:
+
+endif
+
+ifeq (distro,$(IMAGE_CLASS))
 use/efi/debug: use/efi
 	@$(call add,STAGE2_PACKAGES,efibootmgr gdisk)
+else
+use/efi/debug: use/efi; @:
+endif
 
 else