| # 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 |
