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) # Absolute relocation type $(ARCH_REL_TYPE_ABS) needs to be defined before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) # the inclusion of generic Makefile.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) ARCH_REL_TYPE_ABS := R_ARM_JUMP_SLOT|R_ARM_GLOB_DAT|R_ARM_ABS32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) include $(srctree)/lib/vdso/Makefile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) hostprogs := vdsomunge
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) obj-vdso := vgettimeofday.o datapage.o note.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) # Build rules
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.so.raw vdso.lds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) ccflags-y += -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) ldflags-$(CONFIG_CPU_ENDIAN_BE8) := --be8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	    -z max-page-size=4096 -nostdlib -shared $(ldflags-y) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	    --hash-style=sysv --build-id=sha1 \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	    -T
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) obj-$(CONFIG_VDSO) += vdso.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) extra-$(CONFIG_VDSO) += vdso.lds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) CFLAGS_REMOVE_vdso.o = -pg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) # Force -O2 to avoid libgcc dependencies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) CFLAGS_REMOVE_vgettimeofday.o = -pg -Os $(GCC_PLUGINS_CFLAGS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ifeq ($(c-gettimeofday-y),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) CFLAGS_vgettimeofday.o = -O2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) CFLAGS_vgettimeofday.o = -O2 -include $(c-gettimeofday-y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) # Disable gcov profiling for VDSO code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) GCOV_PROFILE := n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) KCOV_INSTRUMENT := n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) # Force dependency
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) $(obj)/vdso.o : $(obj)/vdso.so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) # Link rule for the .so file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) $(obj)/vdso.so.raw: $(obj)/vdso.lds $(obj-vdso) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	$(call if_changed,vdsold_and_vdso_check)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) $(obj)/vdso.so.dbg: $(obj)/vdso.so.raw $(obj)/vdsomunge FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	$(call if_changed,vdsomunge)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) # Strip rule for the .so file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) $(obj)/%.so: OBJCOPYFLAGS := -S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) $(obj)/%.so: $(obj)/%.so.dbg FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	$(call if_changed,objcopy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) # Actual build commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) quiet_cmd_vdsold_and_vdso_check = LD      $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)       cmd_vdsold_and_vdso_check = $(cmd_ld); $(cmd_vdso_check)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) quiet_cmd_vdsomunge = MUNGE   $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)       cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) # Install the unstripped copy of vdso.so.dbg.  If our toolchain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) # supports build-id, install .build-id links as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) # Cribbed from arch/x86/vdso/Makefile.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) quiet_cmd_vdso_install = INSTALL $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) define cmd_vdso_install
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	cp $< "$(MODLIB)/vdso/vdso.so"; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	if readelf -n $< | grep -q 'Build ID'; then \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	  buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	  first=`echo $$buildid | cut -b-2`; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 	  last=`echo $$buildid | cut -b3-`; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	  mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	  ln -sf "../../vdso.so" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) endef
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) $(MODLIB)/vdso: FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 	@mkdir -p $(MODLIB)/vdso
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) PHONY += vdso_install
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) vdso_install: $(obj)/vdso.so.dbg $(MODLIB)/vdso
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) 	$(call cmd,vdso_install)