1 # Makefile.arm -- with config changes.
2 # Copyright 1990 W. Jolitz
5 # This makefile is constructed from a machine description:
7 # Most changes should be made in the machine description
8 # /sys/arm/conf/``machineid''
9 # after which you should do
11 # Generic makefile changes should be made in
12 # /sys/conf/Makefile.arm
13 # after which config should be rerun for all machines.
16 # Which version of config(8) is required.
28 .include "$S/conf/kern.pre.mk"
30 INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include -I$$/dts/include
32 LINUX_DTS_VERSION!= awk '/freebsd,dts-version/ { sub(/;$$/,"", $$NF); print $$NF }' $S/dts/freebsd-compatible.dts
33 CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\"
39 # We don't support gcc's thump interwork stuff, so disable it
40 CFLAGS.gcc += -mno-thumb-interwork
42 # We generally don't want fpu instructions in the kernel.
43 CFLAGS.clang += -mfpu=none
45 .if !empty(DDB_ENABLED)
46 CFLAGS += -funwind-tables
49 # "makeoptions KERNVIRTADDR=" is now optional, supply the default value.
50 .if empty(KERNVIRTADDR)
51 KERNVIRTADDR= 0xc0000000
54 # Use a custom SYSTEM_LD command to generate the elf kernel, so we can
55 # set the text segment start address, and also strip the "arm mapping
56 # symbols" which have names like $a.0 and $d.2; see the document
57 # "ELF for the ARM architecture" for more info on the mapping symbols.
59 ${SYSTEM_LD_BASECMD} \
60 --defsym='text_start=kernbase + SIZEOF_HEADERS' \
61 -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \
64 --strip-symbol='$$[adt]*' \
67 # Generate the .bin (no elf headers) kernel as an extra build output.
68 # We must relink to generate the .bin kernel, because without headers the
69 # location of everything changes. We also strip the ARM marker symbols.
70 ${KERNEL_KO}.bin: ${SYSTEM_DEP} vers.o
71 @echo "linking ${.TARGET}"
72 @${SYSTEM_LD_BASECMD} \
73 --defsym='text_start=kernbase' \
74 -o ${.TARGET} ${SYSTEM_OBJS} vers.o
78 --strip-symbol='$$[adt]*' \
79 --output-target=binary \
83 # hack because genassym.c includes sys/bus.h which includes these.
84 genassym.o: bus_if.h device_if.h
100 .include "$S/conf/kern.post.mk"