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
8 # This makefile is constructed from a machine description:
10 # Most changes should be made in the machine description
11 # /sys/arm64/conf/``machineid''
12 # after which you should do
14 # Generic makefile changes should be made in
15 # /sys/conf/Makefile.arm64
16 # after which config should be rerun for all machines.
19 # Which version of config(8) is required.
25 .include "$S/conf/kern.pre.mk"
27 INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include
29 LINUX_DTS_VERSION!= awk '/freebsd,dts-version/ { sub(/;$$/,"", $$NF); print $$NF }' $S/dts/freebsd-compatible.dts
30 CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\"
32 PERTHREAD_SSP_ENABLED!= grep PERTHREAD_SSP opt_global.h || true ; echo
33 .if !empty(PERTHREAD_SSP_ENABLED)
34 . if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 130000
35 ARM64_SSP_CFLAGS = -mstack-protector-guard=sysreg
36 ARM64_SSP_CFLAGS += -mstack-protector-guard-reg=sp_el0
37 ARM64_SSP_CFLAGS += -mstack-protector-guard-offset=0
39 ARM64_SSP_CFLAGS += -DPERTHREAD_SSP_WARNING
40 . warning "Compiler is too old to support PERTHREAD_SSP"
42 CFLAGS += ${ARM64_SSP_CFLAGS}
43 ARCH_FLAGS += ${ARM64_SSP_CFLAGS}
46 # Use a custom SYSTEM_LD command to generate the elf kernel, so we can
47 # set the text segment start address, and also strip the "arm mapping
48 # symbols" which have names like $a.0 and $d.2; see the document
49 # "ELF for the ARM architecture" for more info on the mapping symbols.
51 ${SYSTEM_LD_BASECMD} \
52 --defsym='text_start=kernbase + SIZEOF_HEADERS' \
53 -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \
56 --strip-symbol='$$[adtx]*' \
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.
61 KERNEL_EXTRA+= ${KERNEL_KO}.bin
62 KERNEL_EXTRA_INSTALL+= ${KERNEL_KO}.bin
64 .if !empty(DDB_ENABLED) || !empty(DTRACE_ENABLED) || !empty(HWPMC_ENABLED)
65 CFLAGS += -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
79 CLEAN+= ${KERNEL_KO}.bin
83 .include "$S/conf/kern.post.mk"
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; \
101 @echo "created ${.TARGET} from ${.ALLSRC}"