409 lines
14 KiB
Makefile
409 lines
14 KiB
Makefile
# Backward compatibility - to be removed...
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extra-y += $(EXTRA_TARGETS)
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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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# 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: $(subdir-m)
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# lowlevel is present in the PBL if enabled
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# otherwise in barebox
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ifeq ($(CONFIG_PBL_IMAGE), y)
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pbl-y += $(lwl-y)
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else
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obj-y += $(lwl-y)
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endif
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obj-y += $(obj-pbl-y)
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pbl-y += $(obj-pbl-y)
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# for non dirs add pbl- prefix to the target
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# so we recompile the source with custom flags and custom quiet
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__pbl-y := $(notdir $(pbl-y))
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pbl-y := $(patsubst %.o,pbl-%.o,$(__pbl-y))
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# add subdir from $(obj-y) too so we do not need to have the dir define in
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# both $(obj-y) and $(pbl-y)
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__pbl-y := $(filter-out $(pbl-y), $(filter %/, $(obj-y)))
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pbl-y += $(__pbl-y)
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pbl-y := $(sort $(patsubst %/, %/built-in-pbl.o, $(pbl-y)))
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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) 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))))
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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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multi-objs := $(multi-objs-y) $(multi-objs-m)
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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-pbl.o, $(pbl-y))
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subdir-obj-y := $(filter %/built-in.o, $(obj-y))
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subdir-obj-y += $(__subdir-obj-y)
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# $(obj-dirs) is a list of directories that contain object files
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obj-dirs := $(dir $(multi-objs) $(obj-y) $(pbl-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))) $(extra-y)
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real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
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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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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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pbl-y := $(addprefix $(obj)/,$(pbl-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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obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
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bbenv-y := $(addprefix $(obj)/,$(bbenv-y))
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# These flags are needed for modversions and compiling, so we define them here
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# already
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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: It's possible that one object gets potentially linked into more
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# than one module. In that case KBUILD_MODNAME will be set to foo_bar,
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# where foo and bar are the name of the modules.
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name-fix = $(subst $(comma),_,$(subst -,_,$1))
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basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
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modname_flags = $(if $(filter 1,$(words $(modname))),\
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-D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
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_c_flags = $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$(basetarget).o)
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_a_flags = $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
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_cpp_flags = $(CPPFLAGS) $(EXTRA_CPPFLAGS) $(CPPFLAGS_$(@F))
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# If building barebox 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 = $(call addtree,-I$(obj)) $(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) $(CPPFLAGS) \
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$(__c_flags) $(modkern_cflags) \
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-D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
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a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
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$(__a_flags) $(modkern_aflags)
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cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(__cpp_flags)
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ld_flags = $(LDFLAGS) $(EXTRA_LDFLAGS)
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dtc_cpp_flags = -Wp,-MD,$(depfile).pre -nostdinc \
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-I$(srctree)/arch/$(SRCARCH)/dts/include \
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-I$(srctree)/dts/include \
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-I$(srctree)/dts/src/ \
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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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# 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_TARGETS 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) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@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 $@ ; false)
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%.gz: %
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$(call if_changed,gzip)
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# DTC
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# ---------------------------------------------------------------------------
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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 $@
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cmd_dt_S_dtb= \
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( \
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echo '\#include <asm-generic/barebox.lds.h>'; \
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echo '.section .dtb.rodata.$(subst -,_,$(*F)),"a"'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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echo '.global __dtb_$(subst -,_,$(*F))_start'; \
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echo '__dtb_$(subst -,_,$(*F))_start:'; \
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echo '.incbin "$<" '; \
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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 = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
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$(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 \
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-i $(srctree)/arch/$(SRCARCH)/dts $(DTC_FLAGS) \
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-i $(srctree)/dts/src/$(SRCARCH) \
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-d $(depfile).dtc $(dtc-tmp) ; \
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cat $(depfile).pre $(depfile).dtc > $(depfile)
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$(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)
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obj-y += $(patsubst %,%.bbenv$(DEFAULT_COMPRESSION_SUFFIX).o,$(bbenv-y))
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extra-y += $(patsubst %,%.bbenv$(DEFAULT_COMPRESSION_SUFFIX),$(bbenv-y))
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extra-y += $(patsubst %,%.bbenv$(DEFAULT_COMPRESSION_SUFFIX).S,$(bbenv-y))
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extra-y += $(patsubst %,%.bbenv$(DEFAULT_COMPRESSION_SUFFIX).o,$(bbenv-y))
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quiet_cmd_env_S = ENV.S $@
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cmd_env_S = \
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( \
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echo '\#include <asm-generic/barebox.lds.h>'; \
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echo '.section .bbenv.rodata.$(subst -,_,$(*F)),"a"'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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echo '.global __bbenv_$(subst -,_,$(*F))_start'; \
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echo '__bbenv_$(subst -,_,$(*F))_start:'; \
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echo '.incbin "$<" '; \
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echo '__bbenv_$(subst -,_,$(*F))_end:'; \
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echo '.global __bbenv_$(subst -,_,$(*F))_end'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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) > $@
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$(obj)/%.bbenv$(DEFAULT_COMPRESSION_SUFFIX).S: $(src)/%.bbenv$(DEFAULT_COMPRESSION_SUFFIX) FORCE
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$(call if_changed,env_S)
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quiet_cmd_env = ENV $@
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cmd_env=$(srctree)/scripts/genenv $(srctree) $(objtree) $@ $<
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%.bbenv$(DEFAULT_COMPRESSION_SUFFIX): % FORCE
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$(call cmd,env)
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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 $@ ; false)
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%.bz2: %
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$(call if_changed,bzip2)
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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 $@ ; false)
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%.lzma: %
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$(call if_changed,lzma)
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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 $@ ; false)
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%.lzo: %
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$(call if_changed,lzo)
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# XZ
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# ---------------------------------------------------------------------------
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# Use xzkern to compress the kernel image and xzmisc to compress other things.
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#
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# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
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# of the kernel decompressor. A BCJ filter is used if it is available for
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# the target architecture. xzkern also appends uncompressed size of the data
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# using size_append. The .xz format has the size information available at
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# the end of the file too, but it's in more complex format and it's good to
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# avoid changing the part of the boot code that reads the uncompressed size.
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# Note that the bytes added by size_append will make the xz tool think that
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# the file is corrupt. This is expected.
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#
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# xzmisc doesn't use size_append, so it can be used to create normal .xz
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# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
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# big dictionary would increase the memory usage too much in the multi-call
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# decompression mode. A BCJ filter isn't used either.
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quiet_cmd_xzkern = XZKERN $@
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cmd_xzkern = (cat $(filter-out FORCE,$^) | \
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sh $(srctree)/scripts/xz_wrap.sh && \
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$(call size_append, $(filter-out FORCE,$^))) > $@ || \
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(rm -f $@ ; false)
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quiet_cmd_xzmisc = XZMISC $@
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cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
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xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
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(rm -f $@ ; false)
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# lz4
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# ---------------------------------------------------------------------------
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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 $@ ; false)
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%.lz4: %
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$(call if_changed,lz4)
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quiet_cmd_disasm = DISASM $@
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cmd_disasm = $(OBJDUMP) -d $< > $@
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quiet_cmd_ln = LN $@
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cmd_ln = ln -sf $< $@
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# Check size of a file
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quiet_cmd_check_file_size = CHKSIZE $@
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cmd_check_file_size = set -e; \
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size=`stat -c%s $@`; \
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max_size=`printf "%d" $2`; \
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if [ $$size -gt $$max_size ] ; \
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then \
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echo "$@ size $$size > of the maximum size $$max_size" >&2; \
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exit 1 ; \
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fi;
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quiet_cmd_imximage__S_dcd= DCD_S $@
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cmd_imximage_S_dcd= \
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( \
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echo '\#include <asm-generic/barebox.lds.h>'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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echo '.global $(subst -,_,$(*F))_start'; \
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echo '$(subst -,_,$(*F))_start:'; \
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echo '.incbin "$<" '; \
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echo '$(subst -,_,$(*F))_end:'; \
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echo '.global $(subst -,_,$(*F))_end'; \
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echo '.balign STRUCT_ALIGNMENT'; \
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) > $@
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imxcfg_cpp_flags = -Wp,-MD,$(depfile) -nostdinc -x assembler-with-cpp \
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-I $(srctree)/include -I $(MACH)/include \
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-include include/generated/autoconf.h
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dcd-tmp = $(subst $(comma),_,$(dot-target).dcd.tmp)
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quiet_cmd_dcd = DCD $@
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cmd_dcd = $(CPP) $(imxcfg_cpp_flags) -o $(dcd-tmp) $< ; \
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$(objtree)/scripts/imx/imx-image -d -o $@ -c $(dcd-tmp)
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$(obj)/%.dcd: $(obj)/%.imxcfg FORCE
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$(call if_changed,dcd)
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$(obj)/%.dcd.S: $(obj)/%.dcd
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$(call cmd,imximage_S_dcd)
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imximg-tmp = $(subst $(comma),_,$(dot-target).imxcfg.tmp)
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quiet_cmd_imx_image = IMX-IMG $@
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cmd_imx_image = $(CPP) $(imxcfg_cpp_flags) -o $(imximg-tmp) $(CFG_$(@F)) ; \
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$(objtree)/scripts/imx/imx-image -o $@ -b -c $(imximg-tmp) -f $<
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quiet_cmd_kwb_image = KWB $@
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cmd_kwb_image = scripts/kwbimage -p $< $(OPTS_$(@F)) -o $@
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quiet_cmd_cboot_bct = BCT $@
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cmd_cboot_bct = $(objtree)/scripts/tegra/cbootimage -gbct -s $(soc) $< $@
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$(obj)/%.bct: $(obj)/%.bct.cfg
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$(call cmd,cboot_bct)
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