diff options
Diffstat (limited to 'drivers/firmware/efi/libstub')
| -rw-r--r-- | drivers/firmware/efi/libstub/Makefile.zboot | 36 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/zboot-header.S | 2 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/zboot.c | 6 |
3 files changed, 31 insertions, 13 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile.zboot b/drivers/firmware/efi/libstub/Makefile.zboot index ccdd6a130d98..2d7877023604 100644 --- a/drivers/firmware/efi/libstub/Makefile.zboot +++ b/drivers/firmware/efi/libstub/Makefile.zboot @@ -3,6 +3,14 @@ # to be include'd by arch/$(ARCH)/boot/Makefile after setting # EFI_ZBOOT_PAYLOAD, EFI_ZBOOT_BFD_TARGET and EFI_ZBOOT_MACH_TYPE +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 @@ -10,16 +18,25 @@ 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)) && ( \ +# 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 := $(comp-type-y)_with_size +zboot-size-len-y := 12 + +zboot-method-$(CONFIG_KERNEL_GZIP) := gzip +zboot-size-len-$(CONFIG_KERNEL_GZIP) := 8 + +# Copy the SizeOfHeaders and SizeOfCode 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 = $(quiet_cmd_$(zboot-method-y)) + cmd_compwithsize = $(cmd_$(zboot-method-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 ) >> $@ + dd status=none if=$< bs=4 count=1 skip=23 ) >> $@ -$(obj)/vmlinuz: $(obj)/$(EFI_ZBOOT_PAYLOAD) FORCE +$(obj)/vmlinuz: $(obj)/vmlinux.bin FORCE $(call if_changed,compwithsize) OBJCOPYFLAGS_vmlinuz.o := -I binary -O $(EFI_ZBOOT_BFD_TARGET) \ @@ -29,6 +46,7 @@ $(obj)/vmlinuz.o: $(obj)/vmlinuz FORCE AFLAGS_zboot-header.o += -DMACHINE_TYPE=IMAGE_FILE_MACHINE_$(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 @@ -44,4 +62,4 @@ OBJCOPYFLAGS_vmlinuz.efi := -O binary $(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 vmlinux.bin vmlinuz vmlinuz.o vmlinuz.efi.elf vmlinuz.efi diff --git a/drivers/firmware/efi/libstub/zboot-header.S b/drivers/firmware/efi/libstub/zboot-header.S index 445cb646eaaa..053aba073594 100644 --- a/drivers/firmware/efi/libstub/zboot-header.S +++ b/drivers/firmware/efi/libstub/zboot-header.S @@ -17,7 +17,7 @@ __efistub_efi_zboot_header: .long MZ_MAGIC .ascii "zimg" // image type .long __efistub__gzdata_start - .Ldoshdr // payload offset - .long __efistub__gzdata_size - 12 // payload size + .long __efistub__gzdata_size - ZBOOT_SIZE_LEN // payload size .long 0, 0 // reserved .asciz COMP_TYPE // compression type .org .Ldoshdr + 0x38 diff --git a/drivers/firmware/efi/libstub/zboot.c b/drivers/firmware/efi/libstub/zboot.c index 6105e5e2eda4..63ece4800900 100644 --- a/drivers/firmware/efi/libstub/zboot.c +++ b/drivers/firmware/efi/libstub/zboot.c @@ -91,12 +91,12 @@ efi_zboot_entry(efi_handle_t handle, efi_system_table_t *systab) efi_info("Decompressing Linux Kernel...\n"); // SizeOfImage from the compressee's PE/COFF header - alloc_size = round_up(get_unaligned_le32(_gzdata_end - 4), + alloc_size = round_up(get_unaligned_le32(_gzdata_end - 12), EFI_ALLOC_ALIGN); // SizeOfHeaders and SizeOfCode from the compressee's PE/COFF header - code_size = get_unaligned_le32(_gzdata_end - 8) + - get_unaligned_le32(_gzdata_end - 12); + code_size = get_unaligned_le32(_gzdata_end - 4) + + get_unaligned_le32(_gzdata_end - 8); // If the architecture has a preferred address for the image, // try that first. |