Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) # SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) # ===========================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) # Module versions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) # ===========================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) # Stage one of module building created the following:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) # a) The individual .o files used for the module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) # b) A <module>.o file which is the .o files above linked together
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) # c) A <module>.mod file, listing the name of the preliminary <module>.o file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #    plus all .o files
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) # d) modules.order, which lists all the modules
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) # Stage 2 is handled by this file and does the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) # 1) Find all modules listed in modules.order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) # 2) modpost is then used to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) # 3)  create one <module>.mod.c file pr. module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) # 4)  create one Module.symvers file with CRC for all exported symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) # Step 3 is used to place certain information in the module's ELF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) # section, including information such as:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #   Version magic (see include/linux/vermagic.h for full details)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #     - Kernel release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #     - SMP is CONFIG_SMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #     - PREEMPT is CONFIG_PREEMPT[_RT]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #     - GCC Version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #   Module info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #     - Module version (MODULE_VERSION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #     - Module alias'es (MODULE_ALIAS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #     - Module license (MODULE_LICENSE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #     - See include/linux/module.h for more details
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) # Step 4 is solely used to allow module versioning in external modules,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) # where the CRC of each module is retrieved from the Module.symvers file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) # KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) # symbols in the final module linking stage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) # KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) # This is solely useful to speed up test compiles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) PHONY := __modpost
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) __modpost:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) include include/config/auto.conf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) include scripts/Kbuild.include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) # for ld_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) include scripts/Makefile.lib
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) mixed-build-prefix = $(if $(KBUILD_MIXED_TREE),$(KBUILD_MIXED_TREE)/)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) MODPOST = scripts/mod/modpost								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	$(if $(CONFIG_MODVERSIONS),-m)							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	$(if $(KBUILD_MODPOST_WARN),-w) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	-o $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) ifdef MODPOST_VMLINUX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) quiet_cmd_modpost = MODPOST $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61)       cmd_modpost = $(MODPOST) $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) vmlinux.symvers: vmlinux.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	$(call cmd,modpost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) __modpost: vmlinux.symvers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) ifeq ($(KBUILD_EXTMOD),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) input-symdump := $(mixed-build-prefix)vmlinux.symvers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) output-symdump := modules-only.symvers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) module_srcpath := $(srctree)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) quiet_cmd_cat = GEN     $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)       cmd_cat = cat $(real-prereqs) > $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) ifneq ($(wildcard $(mixed-build-prefix)vmlinux.symvers),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) __modpost: Module.symvers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) Module.symvers: $(mixed-build-prefix)vmlinux.symvers modules-only.symvers FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	$(call if_changed,cat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) targets += Module.symvers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) # set src + obj - they may be used in the modules's Makefile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) obj := $(KBUILD_EXTMOD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) src := $(obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) # Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97)              $(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) # modpost option for external modules
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) MODPOST += -e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) output-symdump := $(KBUILD_EXTMOD)/Module.symvers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) # Get the external module's source path. KBUILD_EXTMOD could either be an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) # absolute path or relative path from $(srctree). This makes sure that we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) # aren't using a relative path from a separate working directory (O= or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) # KBUILD_OUTPUT) since that may not be the actual module's SCM project path. So
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) # check the path relative to $(srctree) first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ifneq ($(realpath $(srctree)/$(KBUILD_EXTMOD) 2>/dev/null),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	module_srcpath := $(srctree)/$(KBUILD_EXTMOD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	module_srcpath := $(KBUILD_EXTMOD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ifeq ($(CONFIG_MODULE_SCMVERSION),y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) # Get the SCM version of the module. `sed` verifies setlocalversion returns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) # a proper revision based on the SCM type, e.g. git, mercurial, or svn.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) module_scmversion := $(shell $(srctree)/scripts/setlocalversion $(module_srcpath) | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	sed -n 's/.*-\(\(g\|hg\)[a-fA-F0-9]\+\(-dirty\)\?\|svn[0-9]\+\).*/\1/p')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) ifneq ($(module_scmversion),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) MODPOST += -v $(module_scmversion)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) # modpost options for modules (both in-kernel and external)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) MODPOST += \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	$(addprefix -i ,$(wildcard $(input-symdump))) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	$(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) # 'make -i -k' ignores compile errors, and builds as many modules as possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) MODPOST += -n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) # Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) VPATH :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) $(input-symdump):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	@echo >&2 'WARNING: Symbol version dump "$@" is missing.'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	@echo >&2 '         Modules may not have dependencies or modversions.'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) ifdef CONFIG_LTO_CLANG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) # With CONFIG_LTO_CLANG, .o files might be LLVM bitcode, so we need to run
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) # LTO to compile them into native code before running modpost
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) prelink-ext := .lto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) quiet_cmd_cc_lto_link_modules = LTO [M] $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) cmd_cc_lto_link_modules =						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	$(LD) $(ld_flags) -r -o $@					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		$(shell [ -s $(@:.lto.o=.o.symversions) ] &&		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 			echo -T $(@:.lto.o=.o.symversions))		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		--whole-archive $^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) %.lto.o: %.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	$(call if_changed,cc_lto_link_modules)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) modules := $(sort $(shell cat $(MODORDER)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) # Read out modules.order to pass in modpost.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) # Otherwise, allmodconfig would fail with "Argument list too long".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) quiet_cmd_modpost = MODPOST $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)       cmd_modpost = sed 's/\.ko$$/$(prelink-ext)\.o/' $< | $(MODPOST) -T -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) $(output-symdump): $(MODORDER) $(input-symdump) $(modules:.ko=$(prelink-ext).o) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	$(call if_changed,modpost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) targets += $(output-symdump)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) __modpost: $(output-symdump)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) ifneq ($(KBUILD_MODPOST_NOFINAL),1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) PHONY += FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) FORCE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) existing-targets := $(wildcard $(sort $(targets)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .PHONY: $(PHONY)