mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/
synced 2026-04-18 14:43:42 -04:00
095aabe338
The Make variable containing the objcopy flags may be constructed from the output of build tools operating on build artifacts, and these may not exist when doing a make clean. So avoid evaluating them eagerly, to prevent spurious build warnings. Suggested-by: Pedro Falcato <pedro.falcato@gmail.com> Tested-by: Alan Bartlett <ajb@elrepo.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
64 lines
2.5 KiB
Makefile
64 lines
2.5 KiB
Makefile
# 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 $(shell 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
|
|
$(call if_changed,copy_and_pad)
|
|
|
|
comp-type-$(CONFIG_KERNEL_GZIP) := gzip
|
|
comp-type-$(CONFIG_KERNEL_LZ4) := lz4
|
|
comp-type-$(CONFIG_KERNEL_LZMA) := lzma
|
|
comp-type-$(CONFIG_KERNEL_LZO) := lzo
|
|
comp-type-$(CONFIG_KERNEL_XZ) := xzkern
|
|
comp-type-$(CONFIG_KERNEL_ZSTD) := zstd22
|
|
|
|
# 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.
|
|
# So disregard it when calculating the payload size in the zimage header.
|
|
zboot-method-y := $(comp-type-y)_with_size
|
|
zboot-size-len-y := 4
|
|
|
|
zboot-method-$(CONFIG_KERNEL_GZIP) := gzip
|
|
zboot-size-len-$(CONFIG_KERNEL_GZIP) := 0
|
|
|
|
$(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_$(EFI_ZBOOT_MACH_TYPE) \
|
|
-DZBOOT_EFI_PATH="\"$(realpath $(obj)/vmlinuz.efi.elf)\"" \
|
|
-DZBOOT_SIZE_LEN=$(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)
|
|
|
|
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
|