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55fe6da9ef
cmd_dt_S_dtb constructs the assembly source to incorporate a devicetree
FDT (that is, the .dtb file) as binary data in the kernel image. This
assembly source contains labels before and after the binary data. The
label names incorporate the file name of the corresponding .dtb file.
Hyphens are not legal characters in labels, so .dtb files built into the
kernel with hyphens in the file name result in errors like the
following:
bcm3368-netgear-cvg834g.dtb.S: Assembler messages:
bcm3368-netgear-cvg834g.dtb.S:5: Error: : no such section
bcm3368-netgear-cvg834g.dtb.S:5: Error: junk at end of line, first unrecognized character is `-'
bcm3368-netgear-cvg834g.dtb.S:6: Error: unrecognized opcode `__dtb_bcm3368-netgear-cvg834g_begin:'
bcm3368-netgear-cvg834g.dtb.S:8: Error: unrecognized opcode `__dtb_bcm3368-netgear-cvg834g_end:'
bcm3368-netgear-cvg834g.dtb.S:9: Error: : no such section
bcm3368-netgear-cvg834g.dtb.S:9: Error: junk at end of line, first unrecognized character is `-'
Fix this by updating cmd_dt_S_dtb to transform all hyphens from the file
name to underscores when constructing the labels.
As of v4.16-rc2, 1139 .dts files across ARM64, ARM, MIPS and PowerPC
contain hyphens in their names, but the issue only currently manifests
on Broadcom MIPS platforms, as that is the only place where such files
are built into the kernel. For example when CONFIG_DT_NETGEAR_CVG834G=y,
or on BMIPS kernels when the dtbs target is used (in the latter case it
admittedly shouldn't really build all the dtb.o files, but thats a
separate issue).
Fixes: 695835511f ("MIPS: BMIPS: rename bcm96358nb4ser to bcm6358-neufbox4-sercom")
Signed-off-by: James Hogan <jhogan@kernel.org>
Reviewed-by: Frank Rowand <frowand.list@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: <stable@vger.kernel.org> # 4.9+
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
449 lines
16 KiB
Makefile
449 lines
16 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Backward compatibility
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asflags-y += $(EXTRA_AFLAGS)
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ccflags-y += $(EXTRA_CFLAGS)
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cppflags-y += $(EXTRA_CPPFLAGS)
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ldflags-y += $(EXTRA_LDFLAGS)
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# flags that take effect in current and sub directories
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KBUILD_AFLAGS += $(subdir-asflags-y)
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KBUILD_CFLAGS += $(subdir-ccflags-y)
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# Figure out what we need to build from the various variables
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# ===========================================================================
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# When an object is listed to be built compiled-in and modular,
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# only build the compiled-in version
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obj-m := $(filter-out $(obj-y),$(obj-m))
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# Libraries are always collected in one lib file.
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# Filter out objects already built-in
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lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
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# Determine modorder.
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# Unfortunately, we don't have information about ordering between -y
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# and -m subdirs. Just put -y's first.
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modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
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# Handle objects in subdirs
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# ---------------------------------------------------------------------------
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# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
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# and add the directory to the list of dirs to descend into: $(subdir-y)
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# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
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# and add the directory to the list of dirs to descend into: $(subdir-m)
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__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
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subdir-y += $(__subdir-y)
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__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
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subdir-m += $(__subdir-m)
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obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
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obj-m := $(filter-out %/, $(obj-m))
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# Subdirectories we need to descend into
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subdir-ym := $(sort $(subdir-y) $(subdir-m))
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# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
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multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
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multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
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multi-used := $(multi-used-y) $(multi-used-m)
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single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
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# Build list of the parts of our composite objects, our composite
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# objects depend on those (obviously)
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multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
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multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
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# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
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# tell kbuild to descend
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subdir-obj-y := $(filter %/built-in.o, $(obj-y))
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# Replace multi-part objects by their individual parts, look at local dir only
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real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
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real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
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# DTB
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# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
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extra-y += $(dtb-y)
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extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
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# Add subdir path
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extra-y := $(addprefix $(obj)/,$(extra-y))
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always := $(addprefix $(obj)/,$(always))
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targets := $(addprefix $(obj)/,$(targets))
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modorder := $(addprefix $(obj)/,$(modorder))
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obj-y := $(addprefix $(obj)/,$(obj-y))
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obj-m := $(addprefix $(obj)/,$(obj-m))
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lib-y := $(addprefix $(obj)/,$(lib-y))
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subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
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real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
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real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
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single-used-m := $(addprefix $(obj)/,$(single-used-m))
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multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
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multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
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multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
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multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
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subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
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# These flags are needed for modversions and compiling, so we define them here
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# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
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# end up in (or would, if it gets compiled in)
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# Note: Files that end up in two or more modules are compiled without the
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# KBUILD_MODNAME definition. The reason is that any made-up name would
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# differ in different configs.
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name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
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basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
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modname_flags = $(if $(filter 1,$(words $(modname))),\
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-DKBUILD_MODNAME=$(call name-fix,$(modname)))
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orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
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$(ccflags-y) $(CFLAGS_$(basetarget).o)
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_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
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orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
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$(asflags-y) $(AFLAGS_$(basetarget).o)
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_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
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_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
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#
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# Enable gcov profiling flags for a file, directory or for all files depending
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# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
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# (in this order)
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#
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ifeq ($(CONFIG_GCOV_KERNEL),y)
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_c_flags += $(if $(patsubst n%,, \
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$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
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$(CFLAGS_GCOV))
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endif
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#
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# Enable address sanitizer flags for kernel except some files or directories
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# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
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#
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ifeq ($(CONFIG_KASAN),y)
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_c_flags += $(if $(patsubst n%,, \
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$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
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$(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE))
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endif
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ifeq ($(CONFIG_UBSAN),y)
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_c_flags += $(if $(patsubst n%,, \
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$(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \
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$(CFLAGS_UBSAN))
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endif
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ifeq ($(CONFIG_KCOV),y)
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_c_flags += $(if $(patsubst n%,, \
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$(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
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$(CFLAGS_KCOV))
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endif
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# If building the kernel in a separate objtree expand all occurrences
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# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
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ifeq ($(KBUILD_SRC),)
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__c_flags = $(_c_flags)
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__a_flags = $(_a_flags)
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__cpp_flags = $(_cpp_flags)
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else
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# -I$(obj) locates generated .h files
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# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
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# and locates generated .h files
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# FIXME: Replace both with specific CFLAGS* statements in the makefiles
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__c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
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$(call flags,_c_flags)
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__a_flags = $(call flags,_a_flags)
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__cpp_flags = $(call flags,_cpp_flags)
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endif
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c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
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$(__c_flags) $(modkern_cflags) \
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$(basename_flags) $(modname_flags)
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a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
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$(__a_flags) $(modkern_aflags)
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cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
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$(__cpp_flags)
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ld_flags = $(LDFLAGS) $(ldflags-y)
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DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes
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dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
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$(addprefix -I,$(DTC_INCLUDE)) \
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-undef -D__DTS__
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# Finds the multi-part object the current object will be linked into
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modname-multi = $(sort $(foreach m,$(multi-used),\
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$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
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# Useful for describing the dependency of composite objects
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# Usage:
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# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
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define multi_depend
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$(foreach m, $(notdir $1), \
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$(eval $(obj)/$m: \
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$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
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endef
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# LEX
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# ---------------------------------------------------------------------------
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quiet_cmd_flex = LEX $@
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cmd_flex = $(LEX) -o$@ -L $<
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ifdef REGENERATE_PARSERS
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.PRECIOUS: $(src)/%.lex.c_shipped
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$(src)/%.lex.c_shipped: $(src)/%.l
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$(call cmd,flex)
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endif
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.PRECIOUS: $(obj)/%.lex.c
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$(filter %.lex.c,$(targets)): $(obj)/%.lex.c: $(src)/%.l FORCE
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$(call if_changed,flex)
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# YACC
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# ---------------------------------------------------------------------------
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quiet_cmd_bison = YACC $@
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cmd_bison = $(YACC) -o$@ -t -l $<
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ifdef REGENERATE_PARSERS
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.PRECIOUS: $(src)/%.tab.c_shipped
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$(src)/%.tab.c_shipped: $(src)/%.y
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$(call cmd,bison)
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endif
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.PRECIOUS: $(obj)/%.tab.c
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$(filter %.tab.c,$(targets)): $(obj)/%.tab.c: $(src)/%.y FORCE
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$(call if_changed,bison)
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quiet_cmd_bison_h = YACC $@
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cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
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ifdef REGENERATE_PARSERS
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.PRECIOUS: $(src)/%.tab.h_shipped
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$(src)/%.tab.h_shipped: $(src)/%.y
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$(call cmd,bison_h)
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endif
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.PRECIOUS: $(obj)/%.tab.h
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$(filter %.tab.h,$(targets)): $(obj)/%.tab.h: $(src)/%.y FORCE
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$(call if_changed,bison_h)
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# Shipped files
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# ===========================================================================
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quiet_cmd_shipped = SHIPPED $@
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cmd_shipped = cat $< > $@
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$(obj)/%: $(src)/%_shipped
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$(call cmd,shipped)
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# Commands useful for building a boot image
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# ===========================================================================
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#
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# Use as following:
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#
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# target: source(s) FORCE
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# $(if_changed,ld/objcopy/gzip)
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#
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# and add target to extra-y so that we know we have to
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# read in the saved command line
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# Linking
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# ---------------------------------------------------------------------------
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quiet_cmd_ld = LD $@
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cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
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$(filter-out FORCE,$^) -o $@
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# Objcopy
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# ---------------------------------------------------------------------------
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quiet_cmd_objcopy = OBJCOPY $@
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cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
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# Gzip
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# ---------------------------------------------------------------------------
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quiet_cmd_gzip = GZIP $@
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cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
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(rm -f $@ ; false)
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# DTC
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# ---------------------------------------------------------------------------
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DTC ?= $(objtree)/scripts/dtc/dtc
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# Disable noisy checks by default
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ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
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DTC_FLAGS += -Wno-unit_address_vs_reg \
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-Wno-simple_bus_reg \
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-Wno-unit_address_format \
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-Wno-pci_bridge \
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-Wno-pci_device_bus_num \
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-Wno-pci_device_reg
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endif
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ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
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DTC_FLAGS += -Wnode_name_chars_strict \
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-Wproperty_name_chars_strict
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endif
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DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
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# Generate an assembly file to wrap the output of the device tree compiler
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quiet_cmd_dt_S_dtb= DTB $@
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cmd_dt_S_dtb= \
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( \
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echo '\#include <asm-generic/vmlinux.lds.h>'; \
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echo '.section .dtb.init.rodata,"a"'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
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echo '__dtb_$(subst -,_,$(*F))_begin:'; \
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echo '.incbin "$<" '; \
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echo '__dtb_$(subst -,_,$(*F))_end:'; \
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echo '.global __dtb_$(subst -,_,$(*F))_end'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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) > $@
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$(obj)/%.dtb.S: $(obj)/%.dtb
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$(call cmd,dt_S_dtb)
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quiet_cmd_dtc = DTC $@
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cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
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$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
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$(DTC) -O dtb -o $@ -b 0 \
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$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
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-d $(depfile).dtc.tmp $(dtc-tmp) ; \
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cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
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$(obj)/%.dtb: $(src)/%.dts FORCE
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$(call if_changed_dep,dtc)
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dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
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# Bzip2
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# ---------------------------------------------------------------------------
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# Bzip2 and LZMA do not include size in file... so we have to fake that;
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# append the size as a 32-bit littleendian number as gzip does.
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size_append = printf $(shell \
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dec_size=0; \
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for F in $1; do \
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fsize=$$(stat -c "%s" $$F); \
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dec_size=$$(expr $$dec_size + $$fsize); \
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done; \
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printf "%08x\n" $$dec_size | \
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sed 's/\(..\)/\1 /g' | { \
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read ch0 ch1 ch2 ch3; \
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for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
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printf '%s%03o' '\\' $$((0x$$ch)); \
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done; \
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} \
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)
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quiet_cmd_bzip2 = BZIP2 $@
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cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
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bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
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(rm -f $@ ; false)
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# Lzma
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# ---------------------------------------------------------------------------
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quiet_cmd_lzma = LZMA $@
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cmd_lzma = (cat $(filter-out FORCE,$^) | \
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lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
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(rm -f $@ ; false)
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quiet_cmd_lzo = LZO $@
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cmd_lzo = (cat $(filter-out FORCE,$^) | \
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lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
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(rm -f $@ ; false)
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quiet_cmd_lz4 = LZ4 $@
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cmd_lz4 = (cat $(filter-out FORCE,$^) | \
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lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
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(rm -f $@ ; false)
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# U-Boot mkimage
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# ---------------------------------------------------------------------------
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MKIMAGE := $(srctree)/scripts/mkuboot.sh
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# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
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# the number of overrides in arch makefiles
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UIMAGE_ARCH ?= $(SRCARCH)
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UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
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UIMAGE_OPTS-y ?=
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UIMAGE_TYPE ?= kernel
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UIMAGE_LOADADDR ?= arch_must_set_this
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UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
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UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
|
|
UIMAGE_IN ?= $<
|
|
UIMAGE_OUT ?= $@
|
|
|
|
quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
|
|
cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
|
|
-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
|
|
-T $(UIMAGE_TYPE) \
|
|
-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
|
|
-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
|
|
|
|
# XZ
|
|
# ---------------------------------------------------------------------------
|
|
# Use xzkern to compress the kernel image and xzmisc to compress other things.
|
|
#
|
|
# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
|
|
# of the kernel decompressor. A BCJ filter is used if it is available for
|
|
# the target architecture. xzkern also appends uncompressed size of the data
|
|
# using size_append. The .xz format has the size information available at
|
|
# the end of the file too, but it's in more complex format and it's good to
|
|
# avoid changing the part of the boot code that reads the uncompressed size.
|
|
# Note that the bytes added by size_append will make the xz tool think that
|
|
# the file is corrupt. This is expected.
|
|
#
|
|
# xzmisc doesn't use size_append, so it can be used to create normal .xz
|
|
# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
|
|
# 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 $(filter-out FORCE,$^) | \
|
|
sh $(srctree)/scripts/xz_wrap.sh && \
|
|
$(call size_append, $(filter-out FORCE,$^))) > $@ || \
|
|
(rm -f $@ ; false)
|
|
|
|
quiet_cmd_xzmisc = XZMISC $@
|
|
cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
|
|
xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
|
|
(rm -f $@ ; false)
|
|
|
|
# ASM offsets
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# Default sed regexp - multiline due to syntax constraints
|
|
#
|
|
# Use [:space:] because LLVM's integrated assembler inserts <tab> around
|
|
# the .ascii directive whereas GCC keeps the <space> as-is.
|
|
define sed-offsets
|
|
's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \
|
|
/^->/{s:->#\(.*\):/* \1 */:; \
|
|
s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
|
|
s:->::; p;}'
|
|
endef
|
|
|
|
# Use filechk to avoid rebuilds when a header changes, but the resulting file
|
|
# does not
|
|
define filechk_offsets
|
|
(set -e; \
|
|
echo "#ifndef $2"; \
|
|
echo "#define $2"; \
|
|
echo "/*"; \
|
|
echo " * DO NOT MODIFY."; \
|
|
echo " *"; \
|
|
echo " * This file was generated by Kbuild"; \
|
|
echo " */"; \
|
|
echo ""; \
|
|
sed -ne $(sed-offsets); \
|
|
echo ""; \
|
|
echo "#endif" )
|
|
endef
|