# 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 

SYSTEM_LD:= ${SYSTEM_LD:$S/conf/ldscript.$M=ldscript.$M}
SYSTEM_DEP:= ${SYSTEM_DEP:$S/conf/ldscript.$M=ldscript.$M}

.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

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

SYSTEM_LD_ = ${LD} -m ${LD_EMULATION} -Bdynamic -T ldscript.$M.noheader \
	${_LDFLAGS} --no-warn-mismatch --warn-common --export-dynamic \
	--dynamic-linker /red/herring \
	-o ${FULLKERNEL}.noheader -X ${SYSTEM_OBJS} vers.o
SYSTEM_LD_TAIL +=;sed s/" + SIZEOF_HEADERS"// ldscript.$M\
		>ldscript.$M.noheader; \
		${SYSTEM_LD_}; \
		${OBJCOPY} -S -O binary ${FULLKERNEL}.noheader \
		${KERNEL_KO}.bin; \
		rm ${FULLKERNEL}.noheader

FILES_CPU_FUNC = \
	$S/$M/$M/cpufunc_asm_arm9.S \
	$S/$M/$M/cpufunc_asm_xscale.S $S/$M/$M/cpufunc_asm.S \
	$S/$M/$M/cpufunc_asm_xscale_c3.S $S/$M/$M/cpufunc_asm_armv5_ec.S \
	$S/$M/$M/cpufunc_asm_fa526.S $S/$M/$M/cpufunc_asm_sheeva.S

.if ${MACHINE_ARCH:Marmv[67]*} == "" && defined(KERNPHYSADDR)
KERNEL_EXTRA=trampoline
KERNEL_EXTRA_INSTALL=kernel.gz.tramp
trampoline: ${KERNEL_KO}.tramp
${KERNEL_KO}.tramp: ${KERNEL_KO} $S/$M/$M/inckern.S $S/$M/$M/elf_trampoline.c
	echo "#define KERNNAME \"${KERNEL_KO}.tmp\"" >opt_kernname.h 
	sed s/${KERNVIRTADDR}/${KERNPHYSADDR}/ ldscript.$M > ldscript.$M.tramp
	sed s/" + SIZEOF_HEADERS"// ldscript.$M.tramp > \
	    ldscript.$M.tramp.noheader
	echo "#include <machine/asm.h>" >tmphack.S
	echo "ENTRY(_start)" >>tmphack.S
	echo "bl _startC" >>tmphack.S
	${OBJCOPY} --strip-symbol '$$d' --strip-symbol '$$a' \
	    -g --strip-symbol '$$t' ${FULLKERNEL} ${KERNEL_KO}.tmp
	eval $$(stat -s ${KERNEL_KO}.tmp) && \
	    echo "#define KERNSIZE $$st_size" >>opt_kernname.h
	${CC} -O -nostdlib -I. -I$S \
	    -Xlinker -T -Xlinker ldscript.$M.tramp \
	    -DELF_TRAMPOLINE \
	    tmphack.S \
	    $S/$M/$M/elf_trampoline.c \
	    $S/$M/$M/inckern.S \
	    ${FILES_CPU_FUNC} \
	    -o ${KERNEL_KO}.tramp
	${CC} -O -nostdlib -I. -I$S \
	    -Xlinker -T -Xlinker ldscript.$M.tramp.noheader \
	    -DELF_TRAMPOLINE \
	    tmphack.S \
	    $S/$M/$M/elf_trampoline.c \
	    $S/$M/$M/inckern.S \
	    ${FILES_CPU_FUNC} \
	    -o ${KERNEL_KO}.tramp.noheader 
	${OBJCOPY} -S -O binary ${KERNEL_KO}.tramp.noheader \
	    ${KERNEL_KO}.tramp.bin 
	${OBJCOPY} ${STRIP_FLAGS} ${KERNEL_KO}.tmp 
	echo "#define KERNNAME \"${KERNEL_KO}.tmp.gz\"" >opt_kernname.h 
	eval $$(stat -s ${KERNEL_KO}.tmp) && \
	    echo "#define KERNSIZE $$st_size" >>opt_kernname.h
	gzip -f9 ${KERNEL_KO}.tmp
	eval $$(stat -s ${KERNEL_KO}.tmp.gz) && \
	    echo "#define KERNCOMPSIZE $$st_size" >>opt_kernname.h
	${CC} -O2 -ffreestanding -I. -I$S -c \
	    -DKZIP -DELF_TRAMPOLINE \
	    $S/kern/subr_inflate.c \
	    -o inflate-tramp.o
	${CC} -O -nostdlib -I. -I$S \
	    -Xlinker -T -Xlinker ldscript.$M.tramp \
	    -DKZIP -DELF_TRAMPOLINE \
	    tmphack.S \
	    $S/$M/$M/elf_trampoline.c \
	    inflate-tramp.o \
	    $S/$M/$M/inckern.S \
	    ${FILES_CPU_FUNC} \
	    -o ${KERNEL_KO}.gz.tramp
	${CC} -O -nostdlib -I. -I$S \
	    -Xlinker -T -Xlinker ldscript.$M.tramp.noheader \
	    -DKZIP -DELF_TRAMPOLINE \
	    tmphack.S \
	    $S/$M/$M/elf_trampoline.c \
	    inflate-tramp.o \
	    $S/$M/$M/inckern.S \
	    ${FILES_CPU_FUNC} \
	    -o ${KERNEL_KO}.tramp.noheader
	${OBJCOPY} -S -O binary ${KERNEL_KO}.tramp.noheader \
	    ${KERNEL_KO}.gz.tramp.bin
	rm ${KERNEL_KO}.tmp.gz ${KERNEL_KO}.tramp.noheader opt_kernname.h \
	    inflate-tramp.o tmphack.S
.endif

%BEFORE_DEPEND

%OBJS

%FILES.c

%FILES.s

%FILES.m

%CLEAN

CLEAN+=	ldscript.$M ${KERNEL_KO}.bin ldscript.$M.noheader

CLEAN+= ${KERNEL_KO}.tramp ${KERNEL_KO}.tramp.bin ldscript.$M.tramp \
	ldscript.$M.tramp.noheader ${KERNEL_KO}.gz.tramp \
	${KERNEL_KO}.gz.tramp.bin

ldscript.$M: $S/conf/ldscript.$M
	cat $S/conf/ldscript.$M|sed s/KERNPHYSADDR/${KERNPHYSADDR}/g| \
	  sed s/KERNVIRTADDR/${KERNVIRTADDR}/g > ldscript.$M
%RULES
	
.include "$S/conf/kern.post.mk"