kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}
GZIP-compressed files end with 4 byte data that represents the size
of the original input. The decompressors (the self-extracting kernel)
exploit it to know the vmlinux size beforehand. To mimic the GZIP's
trailer, Kbuild provides cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}.
Unfortunately these macros are used everywhere despite the appended
size data is only useful for the decompressors.
There is no guarantee that such hand-crafted trailers are safely ignored.
In fact, the kernel refuses compressed initramdfs with the garbage data.
That is why usr/Makefile overrides size_append to make it no-op.
To limit the use of such broken compressed files, this commit renames
the existing macros as follows:
cmd_bzip2 --> cmd_bzip2_with_size
cmd_lzma --> cmd_lzma_with_size
cmd_lzo --> cmd_lzo_with_size
cmd_lz4 --> cmd_lz4_with_size
cmd_xzkern --> cmd_xzkern_with_size
cmd_zstd22 --> cmd_zstd22_with_size
To keep the decompressors working, I updated the following Makefiles
accordingly:
arch/arm/boot/compressed/Makefile
arch/h8300/boot/compressed/Makefile
arch/mips/boot/compressed/Makefile
arch/parisc/boot/compressed/Makefile
arch/s390/boot/compressed/Makefile
arch/sh/boot/compressed/Makefile
arch/x86/boot/compressed/Makefile
I reused the current macro names for the normal usecases; they produce
the compressed data in the proper format.
I did not touch the following:
arch/arc/boot/Makefile
arch/arm64/boot/Makefile
arch/csky/boot/Makefile
arch/mips/boot/Makefile
arch/riscv/boot/Makefile
arch/sh/boot/Makefile
kernel/Makefile
This means those Makefiles will stop appending the size data.
I dropped the 'override size_append' hack from usr/Makefile.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
This commit is contained in:
Masahiro Yamada
parent
64d8aaa4ef
commit
7ce7e984ab
|
|
@ -77,10 +77,10 @@ CPPFLAGS_vmlinux.lds += -DTEXT_OFFSET="$(TEXT_OFFSET)"
|
|||
CPPFLAGS_vmlinux.lds += -DMALLOC_SIZE="$(MALLOC_SIZE)"
|
||||
|
||||
compress-$(CONFIG_KERNEL_GZIP) = gzip
|
||||
compress-$(CONFIG_KERNEL_LZO) = lzo
|
||||
compress-$(CONFIG_KERNEL_LZMA) = lzma
|
||||
compress-$(CONFIG_KERNEL_XZ) = xzkern
|
||||
compress-$(CONFIG_KERNEL_LZ4) = lz4
|
||||
compress-$(CONFIG_KERNEL_LZO) = lzo_with_size
|
||||
compress-$(CONFIG_KERNEL_LZMA) = lzma_with_size
|
||||
compress-$(CONFIG_KERNEL_XZ) = xzkern_with_size
|
||||
compress-$(CONFIG_KERNEL_LZ4) = lz4_with_size
|
||||
|
||||
libfdt_objs := fdt_rw.o fdt_ro.o fdt_wip.o fdt.o
|
||||
|
||||
|
|
|
|||
|
|
@ -30,9 +30,11 @@ $(obj)/vmlinux.bin: vmlinux FORCE
|
|||
|
||||
suffix-$(CONFIG_KERNEL_GZIP) := gzip
|
||||
suffix-$(CONFIG_KERNEL_LZO) := lzo
|
||||
compress-$(CONFIG_KERNEL_GZIP) := gzip
|
||||
compress-$(CONFIG_KERNEL_LZO) := lzo_with_size
|
||||
|
||||
$(obj)/vmlinux.bin.$(suffix-y): $(obj)/vmlinux.bin FORCE
|
||||
$(call if_changed,$(suffix-y))
|
||||
$(call if_changed,$(compress-y))
|
||||
|
||||
LDFLAGS_piggy.o := -r --format binary --oformat elf32-h8300-linux -T
|
||||
OBJCOPYFLAGS := -O binary
|
||||
|
|
|
|||
|
|
@ -64,12 +64,12 @@ $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
|
|||
$(call if_changed,objcopy)
|
||||
|
||||
tool_$(CONFIG_KERNEL_GZIP) = gzip
|
||||
tool_$(CONFIG_KERNEL_BZIP2) = bzip2
|
||||
tool_$(CONFIG_KERNEL_LZ4) = lz4
|
||||
tool_$(CONFIG_KERNEL_LZMA) = lzma
|
||||
tool_$(CONFIG_KERNEL_LZO) = lzo
|
||||
tool_$(CONFIG_KERNEL_XZ) = xzkern
|
||||
tool_$(CONFIG_KERNEL_ZSTD) = zstd22
|
||||
tool_$(CONFIG_KERNEL_BZIP2) = bzip2_with_size
|
||||
tool_$(CONFIG_KERNEL_LZ4) = lz4_with_size
|
||||
tool_$(CONFIG_KERNEL_LZMA) = lzma_with_size
|
||||
tool_$(CONFIG_KERNEL_LZO) = lzo_with_size
|
||||
tool_$(CONFIG_KERNEL_XZ) = xzkern_with_size
|
||||
tool_$(CONFIG_KERNEL_ZSTD) = zstd22_with_size
|
||||
|
||||
targets += vmlinux.bin.z
|
||||
|
||||
|
|
|
|||
|
|
@ -70,15 +70,15 @@ suffix-$(CONFIG_KERNEL_XZ) := xz
|
|||
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,gzip)
|
||||
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,bzip2)
|
||||
$(call if_changed,bzip2_with_size)
|
||||
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lz4)
|
||||
$(call if_changed,lz4_with_size)
|
||||
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzma)
|
||||
$(call if_changed,lzma_with_size)
|
||||
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzo)
|
||||
$(call if_changed,lzo_with_size)
|
||||
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,xzkern)
|
||||
$(call if_changed,xzkern_with_size)
|
||||
|
||||
LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
|
||||
$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE
|
||||
|
|
|
|||
|
|
@ -71,17 +71,17 @@ suffix-$(CONFIG_KERNEL_ZSTD) := .zst
|
|||
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,gzip)
|
||||
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,bzip2)
|
||||
$(call if_changed,bzip2_with_size)
|
||||
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lz4)
|
||||
$(call if_changed,lz4_with_size)
|
||||
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzma)
|
||||
$(call if_changed,lzma_with_size)
|
||||
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzo)
|
||||
$(call if_changed,lzo_with_size)
|
||||
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,xzkern)
|
||||
$(call if_changed,xzkern_with_size)
|
||||
$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,zstd22)
|
||||
$(call if_changed,zstd22_with_size)
|
||||
|
||||
OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
|
||||
$(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
|
||||
|
|
|
|||
|
|
@ -52,13 +52,13 @@ vmlinux.bin.all-y := $(obj)/vmlinux.bin
|
|||
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,gzip)
|
||||
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,bzip2)
|
||||
$(call if_changed,bzip2_with_size)
|
||||
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzma)
|
||||
$(call if_changed,lzma_with_size)
|
||||
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,xzkern)
|
||||
$(call if_changed,xzkern_with_size)
|
||||
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzo)
|
||||
$(call if_changed,lzo_with_size)
|
||||
|
||||
OBJCOPYFLAGS += -R .empty_zero_page
|
||||
|
||||
|
|
|
|||
|
|
@ -123,17 +123,17 @@ vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
|
|||
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,gzip)
|
||||
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,bzip2)
|
||||
$(call if_changed,bzip2_with_size)
|
||||
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzma)
|
||||
$(call if_changed,lzma_with_size)
|
||||
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,xzkern)
|
||||
$(call if_changed,xzkern_with_size)
|
||||
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lzo)
|
||||
$(call if_changed,lzo_with_size)
|
||||
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,lz4)
|
||||
$(call if_changed,lz4_with_size)
|
||||
$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
|
||||
$(call if_changed,zstd22)
|
||||
$(call if_changed,zstd22_with_size)
|
||||
|
||||
suffix-$(CONFIG_KERNEL_GZIP) := gz
|
||||
suffix-$(CONFIG_KERNEL_BZIP2) := bz2
|
||||
|
|
|
|||
|
|
@ -395,19 +395,31 @@ printf "%08x\n" $$dec_size | \
|
|||
)
|
||||
|
||||
quiet_cmd_bzip2 = BZIP2 $@
|
||||
cmd_bzip2 = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@
|
||||
cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@
|
||||
|
||||
quiet_cmd_bzip2_with_size = BZIP2 $@
|
||||
cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@
|
||||
|
||||
# Lzma
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
quiet_cmd_lzma = LZMA $@
|
||||
cmd_lzma = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@
|
||||
cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@
|
||||
|
||||
quiet_cmd_lzma_with_size = LZMA $@
|
||||
cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@
|
||||
|
||||
quiet_cmd_lzo = LZO $@
|
||||
cmd_lzo = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@
|
||||
cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@
|
||||
|
||||
quiet_cmd_lzo_with_size = LZO $@
|
||||
cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@
|
||||
|
||||
quiet_cmd_lz4 = LZ4 $@
|
||||
cmd_lz4 = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \
|
||||
cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout > $@
|
||||
|
||||
quiet_cmd_lz4_with_size = LZ4 $@
|
||||
cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \
|
||||
$(size_append); } > $@
|
||||
|
||||
# U-Boot mkimage
|
||||
|
|
@ -450,7 +462,10 @@ quiet_cmd_uimage = UIMAGE $@
|
|||
# big dictionary would increase the memory usage too much in the multi-call
|
||||
# decompression mode. A BCJ filter isn't used either.
|
||||
quiet_cmd_xzkern = XZKERN $@
|
||||
cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \
|
||||
cmd_xzkern = cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@
|
||||
|
||||
quiet_cmd_xzkern_with_size = XZKERN $@
|
||||
cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \
|
||||
$(size_append); } > $@
|
||||
|
||||
quiet_cmd_xzmisc = XZMISC $@
|
||||
|
|
@ -476,7 +491,10 @@ quiet_cmd_zstd = ZSTD $@
|
|||
cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@
|
||||
|
||||
quiet_cmd_zstd22 = ZSTD22 $@
|
||||
cmd_zstd22 = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@
|
||||
cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@
|
||||
|
||||
quiet_cmd_zstd22_with_size = ZSTD22 $@
|
||||
cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@
|
||||
|
||||
# ASM offsets
|
||||
# ---------------------------------------------------------------------------
|
||||
|
|
|
|||
|
|
@ -3,11 +3,6 @@
|
|||
# kbuild file for usr/ - including initramfs image
|
||||
#
|
||||
|
||||
# cmd_bzip2, cmd_lzma, cmd_lzo, cmd_lz4 from scripts/Makefile.lib appends the
|
||||
# size at the end of the compressed file, which unfortunately does not work
|
||||
# with unpack_to_rootfs(). Make size_append no-op.
|
||||
override size_append := :
|
||||
|
||||
compress-y := shipped
|
||||
compress-$(CONFIG_INITRAMFS_COMPRESSION_GZIP) := gzip
|
||||
compress-$(CONFIG_INITRAMFS_COMPRESSION_BZIP2) := bzip2
|
||||
|
|
|
|||
Loading…
Reference in New Issue