path: root/sys/conf/Makefile.arm

# Makefile.arm -- with config changes.
# Copyright 1990 W. Jolitz
#	from: @(#)Makefile.i386	7.1 5/10/91
# $FreeBSD$
#
# Makefile for FreeBSD
#
# This makefile is constructed from a machine description:
#	config machineid
# Most changes should be made in the machine description
#	/sys/arm/conf/``machineid''
# after which you should do
#	 config machineid
# Generic makefile changes should be made in
#	/sys/conf/Makefile.arm
# after which config should be rerun for all machines.
#

# Which version of config(8) is required.
%VERSREQ=	600013

STD8X16FONT?=	iso

.if !defined(S)
.if exists(./@/.)
S=	./@
.else
S=	../../..
.endif
.endif
.include "$S/conf/kern.pre.mk"

INCLUDES+= -I$S/contrib/libfdt -I$S/gnu/dts/include 

.if !defined(DEBUG) && !defined(PROFLEVEL)
STRIP_FLAGS = -S
.endif

# We don't support gcc's thump interwork stuff, so disable it
CFLAGS.gcc += -mno-thumb-interwork

# We generally don't want fpu instructions in the kernel.
CFLAGS.clang += -mfpu=none

.if !empty(DDB_ENABLED)
CFLAGS += -funwind-tables
.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 30500
# clang < 3.5.0 requires us to tell it to emit assembly with unwind information
CFLAGS += -mllvm -arm-enable-ehabi
.endif
.endif

# "makeoptions KERNVIRTADDR=" is now optional, supply the default value.
.if empty(KERNVIRTADDR)
KERNVIRTADDR= 0xc0000000
.endif

# Use a custom SYSTEM_LD command to generate the elf kernel, so we can
# set the text segment start address, and also strip the "arm mapping
# symbols" which have names like $a.0 and $d.2; see the document
# "ELF for the ARM architecture" for more info on the mapping symbols.
SYSTEM_LD= \
	${SYSTEM_LD_BASECMD} \
	    --defsym='text_start=kernbase + SIZEOF_HEADERS' \
	    -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \
	$(OBJCOPY) \
	    --wildcard \
	    --strip-symbol='$$[adt]*' \
	    ${.TARGET}

# Generate the .bin (no elf headers) kernel as an extra build output.
# We must relink to generate the .bin kernel, because without headers the
# location of everything changes.  We also strip the ARM marker symbols.
KERNEL_EXTRA+= ${KERNEL_KO}.bin
KERNEL_EXTRA_INSTALL+= ${KERNEL_KO}.bin

${KERNEL_KO}.bin: ${SYSTEM_DEP} vers.o
	@echo "linking ${.TARGET}"
	@${SYSTEM_LD_BASECMD} \
	    --defsym='text_start=kernbase' \
	    -o ${.TARGET} ${SYSTEM_OBJS} vers.o
	${SIZE} ${.TARGET}
	@${OBJCOPY} \
	    --wildcard \
	    --strip-symbol='$$[adt]*' \
	    --output-target=binary \
	    ${.TARGET}
	@chmod 755 ${.TARGET}

# hack because genassym.c includes sys/bus.h which includes these.
genassym.o: bus_if.h device_if.h

%BEFORE_DEPEND

%OBJS

%FILES.c

%FILES.s

%FILES.m

%CLEAN

CLEAN+=	${KERNEL_KO}.bin

%RULES
	
.include "$S/conf/kern.post.mk"