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Diffstat (limited to '')
| -rw-r--r-- | drivers/firmware/efi/libstub/Makefile.zboot | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile.zboot b/drivers/firmware/efi/libstub/Makefile.zboot new file mode 100644 index 000000000..43e9a4cab --- /dev/null +++ b/drivers/firmware/efi/libstub/Makefile.zboot @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: GPL-2.0 + +# to be include'd by arch/$(ARCH)/boot/Makefile after setting +# EFI_ZBOOT_PAYLOAD, EFI_ZBOOT_BFD_TARGET and EFI_ZBOOT_MACH_TYPE + +comp-type-$(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 + +# Copy the SizeOfHeaders, SizeOfCode and SizeOfImage fields from the payload to +# the end of the compressed image. Note that this presupposes a PE header +# offset of 64 bytes, which is what arm64, RISC-V and LoongArch use. +quiet_cmd_compwithsize = $(quiet_cmd_$(comp-type-y)) + cmd_compwithsize = $(cmd_$(comp-type-y)) && ( \ + dd status=none if=$< bs=4 count=1 skip=37 ; \ + dd status=none if=$< bs=4 count=1 skip=23 ; \ + dd status=none if=$< bs=4 count=1 skip=36 ) >> $@ + +$(obj)/vmlinuz: $(obj)/$(EFI_ZBOOT_PAYLOAD) FORCE + $(call if_changed,compwithsize) + +OBJCOPYFLAGS_vmlinuz.o := -I binary -O $(EFI_ZBOOT_BFD_TARGET) \ + --rename-section .data=.gzdata,load,alloc,readonly,contents +$(obj)/vmlinuz.o: $(obj)/vmlinuz FORCE + $(call if_changed,objcopy) + +AFLAGS_zboot-header.o += -DMACHINE_TYPE=IMAGE_FILE_MACHINE_$(EFI_ZBOOT_MACH_TYPE) \ + -DZBOOT_EFI_PATH="\"$(realpath $(obj)/vmlinuz.efi.elf)\"" \ + -DCOMP_TYPE="\"$(comp-type-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 vmlinuz.o vmlinuz.efi.elf vmlinuz.efi |