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
+# 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
- $(call if_changed,$(zboot-method-y))
+ $(call if_changed,compwithsize)
OBJCOPYFLAGS_vmlinuz.o := -I binary -O $(EFI_ZBOOT_BFD_TARGET) \
--rename-section .data=.gzdata,load,alloc,readonly,contents
AFLAGS_zboot-header.o += -DMACHINE_TYPE=IMAGE_FILE_MACHINE_$(EFI_ZBOOT_MACH_TYPE) \
-DZBOOT_EFI_PATH="\"$(realpath $(obj)/vmlinuz.efi.elf)\"" \
- -DZBOOT_SIZE_LEN=$(zboot-size-len-y) \
-DCOMP_TYPE="\"$(comp-type-y)\""
$(obj)/zboot-header.o: $(srctree)/drivers/firmware/efi/libstub/zboot-header.S FORCE
$(obj)/vmlinuz.efi: $(obj)/vmlinuz.efi.elf FORCE
$(call if_changed,objcopy)
-targets += zboot-header.o vmlinuz vmlinuz.o vmlinuz.efi.elf vmlinuz.efi
+targets += zboot-header.o vmlinuz.o vmlinuz.efi.elf vmlinuz.efi