| # SPDX-License-Identifier: GPL-2.0 | |
| # to be include'd by arch/$(ARCH)/boot/Makefile after setting | |
| # EFI_ZBOOT_PAYLOAD, EFI_ZBOOT_BFD_TARGET, EFI_ZBOOT_MACH_TYPE and | |
| # EFI_ZBOOT_FORWARD_CFI | |
| quiet_cmd_copy_and_pad = PAD $@ | |
| cmd_copy_and_pad = cp $< $@; \ | |
| truncate -s $$(hexdump -s16 -n4 -e '"%u"' $<) $@ | |
| # Pad the file to the size of the uncompressed image in memory, including BSS | |
| $(obj)/vmlinux.bin: $(obj)/$(EFI_ZBOOT_PAYLOAD) FORCE | |
| $(call if_changed,copy_and_pad) | |
| # in GZIP, the appended le32 carrying the uncompressed size is part of the | |
| # format, but in other cases, we just append it at the end for convenience, | |
| # causing the original tools to complain when checking image integrity. | |
| comp-type-y := gzip | |
| zboot-method-y := gzip | |
| zboot-size-len-y := 0 | |
| comp-type-$(CONFIG_KERNEL_ZSTD) := zstd | |
| zboot-method-$(CONFIG_KERNEL_ZSTD) := zstd22_with_size | |
| zboot-size-len-$(CONFIG_KERNEL_ZSTD) := 4 | |
| $(obj)/vmlinuz: $(obj)/vmlinux.bin FORCE | |
| $(call if_changed,$(zboot-method-y)) | |
| # avoid eager evaluation to prevent references to non-existent build artifacts | |
| OBJCOPYFLAGS_vmlinuz.o = -I binary -O $(EFI_ZBOOT_BFD_TARGET) $(EFI_ZBOOT_OBJCOPY_FLAGS) \ | |
| --rename-section .data=.gzdata,load,alloc,readonly,contents | |
| $(obj)/vmlinuz.o: $(obj)/vmlinuz FORCE | |
| $(call if_changed,objcopy) | |
| aflags-zboot-header-$(EFI_ZBOOT_FORWARD_CFI) := \ | |
| -DPE_DLL_CHAR_EX=IMAGE_DLLCHARACTERISTICS_EX_FORWARD_CFI_COMPAT | |
| AFLAGS_zboot-header.o += -DMACHINE_TYPE=IMAGE_FILE_MACHINE_$(EFI_ZBOOT_MACH_TYPE) \ | |
| -DZBOOT_EFI_PATH="\"$(abspath $(obj)/vmlinuz.efi.elf)\"" \ | |
| -DZBOOT_SIZE_LEN=$(zboot-size-len-y) \ | |
| -DCOMP_TYPE="\"$(comp-type-y)\"" \ | |
| $(aflags-zboot-header-y) | |
| $(obj)/zboot-header.o: $(srctree)/drivers/firmware/efi/libstub/zboot-header.S FORCE | |
| $(call if_changed_rule,as_o_S) | |
| ifneq ($(CONFIG_EFI_SBAT_FILE),) | |
| $(obj)/zboot-header.o: $(CONFIG_EFI_SBAT_FILE) | |
| endif | |
| ZBOOT_DEPS := $(obj)/zboot-header.o $(objtree)/drivers/firmware/efi/libstub/lib.a | |
| LDFLAGS_vmlinuz.efi.elf := -T $(srctree)/drivers/firmware/efi/libstub/zboot.lds | |
| $(obj)/vmlinuz.efi.elf: $(obj)/vmlinuz.o $(ZBOOT_DEPS) FORCE | |
| $(call if_changed,ld) | |
| OBJCOPYFLAGS_vmlinuz.efi := -O binary | |
| $(obj)/vmlinuz.efi: $(obj)/vmlinuz.efi.elf FORCE | |
| $(call if_changed,objcopy) | |
| targets += zboot-header.o vmlinux.bin vmlinuz vmlinuz.o vmlinuz.efi.elf vmlinuz.efi |