xref: /freebsd/sys/conf/Makefile.arm64 (revision 4d846d26) 
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# $FreeBSD$
6#
7# Makefile for FreeBSD
8#
9# This makefile is constructed from a machine description:
10#	config machineid
11# Most changes should be made in the machine description
12#	/sys/arm64/conf/``machineid''
13# after which you should do
14#	 config machineid
15# Generic makefile changes should be made in
16#	/sys/conf/Makefile.arm64
17# after which config should be rerun for all machines.
18#
19
20# Which version of config(8) is required.
21%VERSREQ=	600012
22
23.if !defined(S)
24S=	../../..
25.endif
26.include "$S/conf/kern.pre.mk"
27
28INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include
29
30LINUX_DTS_VERSION!=	awk '/freebsd,dts-version/ { sub(/;$$/,"", $$NF); print $$NF }' $S/dts/freebsd-compatible.dts
31CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\"
32
33PERTHREAD_SSP_ENABLED!=	grep PERTHREAD_SSP opt_global.h || true ; echo
34.if !empty(PERTHREAD_SSP_ENABLED)
35. if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 130000
36ARM64_SSP_CFLAGS = -mstack-protector-guard=sysreg
37ARM64_SSP_CFLAGS += -mstack-protector-guard-reg=sp_el0
38ARM64_SSP_CFLAGS += -mstack-protector-guard-offset=0
39. else
40ARM64_SSP_CFLAGS += -DPERTHREAD_SSP_WARNING
41.  warning "Compiler is too old to support PERTHREAD_SSP"
42. endif
43CFLAGS += ${ARM64_SSP_CFLAGS}
44ARCH_FLAGS += ${ARM64_SSP_CFLAGS}
45.endif
46
47# Use a custom SYSTEM_LD command to generate the elf kernel, so we can
48# set the text segment start address, and also strip the "arm mapping
49# symbols" which have names like $a.0 and $d.2; see the document
50# "ELF for the ARM architecture" for more info on the mapping symbols.
51SYSTEM_LD= \
52	${SYSTEM_LD_BASECMD} \
53	    --defsym='text_start=kernbase + SIZEOF_HEADERS' \
54	    -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \
55	$(OBJCOPY) \
56	    --wildcard \
57	    --strip-symbol='$$[adtx]*' \
58	    ${.TARGET}
59
60# Generate the .bin (booti images) kernel as an extra build output.
61# The targets and rules to generate these appear near the end of the file.
62KERNEL_EXTRA+= ${KERNEL_KO}.bin
63KERNEL_EXTRA_INSTALL+= ${KERNEL_KO}.bin
64
65.if !empty(DDB_ENABLED) || !empty(DTRACE_ENABLED) || !empty(HWPMC_ENABLED)
66CFLAGS += -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
67.endif
68
69%BEFORE_DEPEND
70
71%OBJS
72
73%FILES.c
74
75%FILES.s
76
77%FILES.m
78
79%CLEAN
80CLEAN+=	${KERNEL_KO}.bin
81
82%RULES
83
84.include "$S/conf/kern.post.mk"
85
86# Create a kernel.bin file...
87# Copy the kernel to u-boot's booti image format (the elf headers are
88# stripped and a custom binary head blob is prepended), saving the
89# output in a temp file.  We also strip arm "marker" symbols which are
90# used only by elf toolchains.  Read the symbols from kernel.full and pass
91# them to arm_kernel_boothdr.awk, which generates a binary header blob
92# that goes on the front of the stripped kernel.  Cat the header blob
93# and the temp file together to make the kernel.bin file.
94${KERNEL_KO}.bin: ${FULLKERNEL}
95	@${OBJCOPY} --wildcard --strip-symbol='$$[adtx]*' \
96	    --output-target=binary ${FULLKERNEL} ${.TARGET}.temp
97	@{ ${NM} ${FULLKERNEL} | \
98	    ${AWK} -f $S/tools/arm_kernel_boothdr.awk -v hdrtype=v8booti && \
99	    cat ${.TARGET}.temp; \
100	 } > ${.TARGET}
101	@rm ${.TARGET}.temp
102	@echo "created ${.TARGET} from ${.ALLSRC}"
103