1# Makefile.arm64 -- with config changes. 2# Copyright 1990 W. Jolitz 3# from: @(#)Makefile.i386 7.1 5/10/91 4# from FreeBSD: src/sys/conf/Makefile.i386,v 1.255 2002/02/20 23:35:49 5# 6# Makefile for FreeBSD 7# 8# This makefile is constructed from a machine description: 9# config machineid 10# Most changes should be made in the machine description 11# /sys/arm64/conf/``machineid'' 12# after which you should do 13# config machineid 14# Generic makefile changes should be made in 15# /sys/conf/Makefile.arm64 16# after which config should be rerun for all machines. 17# 18 19# Which version of config(8) is required. 20%VERSREQ= 600012 21 22.if !defined(S) 23S= ../../.. 24.endif 25.include "$S/conf/kern.pre.mk" 26 27INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include 28 29LINUX_DTS_VERSION!= awk '/freebsd,dts-version/ { sub(/;$$/,"", $$NF); print $$NF }' $S/dts/freebsd-compatible.dts 30CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\" 31 32PERTHREAD_SSP_ENABLED!= grep PERTHREAD_SSP opt_global.h || true ; echo 33.if !empty(PERTHREAD_SSP_ENABLED) 34. if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 130000 35ARM64_SSP_CFLAGS = -mstack-protector-guard=sysreg 36ARM64_SSP_CFLAGS += -mstack-protector-guard-reg=sp_el0 37ARM64_SSP_CFLAGS += -mstack-protector-guard-offset=0 38. else 39ARM64_SSP_CFLAGS += -DPERTHREAD_SSP_WARNING 40. warning "Compiler is too old to support PERTHREAD_SSP" 41. endif 42CFLAGS += ${ARM64_SSP_CFLAGS} 43ARCH_FLAGS += ${ARM64_SSP_CFLAGS} 44.endif 45 46# Use a custom SYSTEM_LD command to generate the elf kernel, so we can 47# set the text segment start address, and also strip the "arm mapping 48# symbols" which have names like $a.0 and $d.2; see the document 49# "ELF for the ARM architecture" for more info on the mapping symbols. 50SYSTEM_LD= \ 51 ${SYSTEM_LD_BASECMD} \ 52 --defsym='text_start=kernbase + SIZEOF_HEADERS' \ 53 -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \ 54 $(OBJCOPY) \ 55 --wildcard \ 56 --strip-symbol='$$[adtx]*' \ 57 ${.TARGET} 58 59# Generate the .bin (booti images) kernel as an extra build output. 60# The targets and rules to generate these appear near the end of the file. 61KERNEL_EXTRA+= ${KERNEL_KO}.bin 62KERNEL_EXTRA_INSTALL+= ${KERNEL_KO}.bin 63 64.if !empty(DDB_ENABLED) || !empty(DTRACE_ENABLED) || !empty(HWPMC_ENABLED) 65CFLAGS += -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 66.endif 67 68%BEFORE_DEPEND 69 70%OBJS 71 72%FILES.c 73 74%FILES.s 75 76%FILES.m 77 78%CLEAN 79CLEAN+= ${KERNEL_KO}.bin 80 81%RULES 82 83.include "$S/conf/kern.post.mk" 84 85# Create a kernel.bin file... 86# Copy the kernel to u-boot's booti image format (the elf headers are 87# stripped and a custom binary head blob is prepended), saving the 88# output in a temp file. We also strip arm "marker" symbols which are 89# used only by elf toolchains. Read the symbols from kernel.full and pass 90# them to arm_kernel_boothdr.awk, which generates a binary header blob 91# that goes on the front of the stripped kernel. Cat the header blob 92# and the temp file together to make the kernel.bin file. 93${KERNEL_KO}.bin: ${FULLKERNEL} 94 @${OBJCOPY} --wildcard --strip-symbol='$$[adtx]*' \ 95 --output-target=binary ${FULLKERNEL} ${.TARGET}.temp 96 @{ ${NM} ${FULLKERNEL} | \ 97 ${AWK} -f $S/tools/arm_kernel_boothdr.awk -v hdrtype=v8booti && \ 98 cat ${.TARGET}.temp; \ 99 } > ${.TARGET} 100 @rm ${.TARGET}.temp 101 @echo "created ${.TARGET} from ${.ALLSRC}" 102