xref: /src/sys/arch/riscv/conf/Makefile.riscv

#	$NetBSD: Makefile.riscv,v 1.11 2024/02/25 14:27:41 skrll Exp $

# Makefile for NetBSD
#
# This makefile is constructed from a machine description:
#	config machineid
# Most changes should be made in the machine description
#	/sys/arch/<machine>/conf/``machineid''
# after which you should do
#	config machineid
# Machine generic makefile changes should be made in
#	/sys/arch/riscv/conf/Makefile.riscv
# after which config should be rerun for all machines of that type.
#
# To specify debugging, add the config line: makeoptions DEBUG="-g"
# A better way is to specify -g only for a few files.
#
#	makeoptions DEBUGLIST="uvm* trap if_*"

USETOOLS?=	no
NEED_OWN_INSTALL_TARGET?=no
.include <bsd.own.mk>


.if !defined(LP64) && ${MACHINE_ARCH} == "riscv64"
. info (Building GENERIC instead of GENERIC64?)
. error Don't build 32-bit kernel with 64-bit toolchain
.endif

.if defined(LP64) && ${MACHINE_ARCH} == "riscv32"
. info (Building GENERIC64 instead of GENERIC?)
. error Don't build 64-bit kernel with 32-bit toolchain
.endif


##
## (1) port identification
##
.ifndef S
S=		../../../..
.endif
THISRISCV=	$S/arch/${MACHINE}
RISCV=		$S/arch/riscv
GENASSYM_CONF=	${RISCV}/riscv/genassym.cf
.-include "${THISRISCV}/conf/Makefile.${MACHINE}.inc"

##
## (2) compile settings
##
## Note: -ffixed-?? must be kept in sync with cpu.h.
##
CPPFLAGS+=	-D${MACHINE}
CFLAGS+=	-mcmodel=medany
AFLAGS+=	-x assembler-with-cpp ${AOPTS}

##
## (3) libkern and compat
##
OPT_MODULAR=	%MODULAR%

##
## (4) local objects, compile rules, and dependencies
##
MD_OBJS=	locore.o
MD_CFILES=
MD_SFILES=	${RISCV}/riscv/locore.S

locore.o: ${RISCV}/riscv/locore.S assym.h
	${NORMAL_S}

##
## (5) link settings
##
.if ${MACHINE_ARCH} == "riscv64" && ${LP64:Uyes} == "yes"
TEXTADDR?=		0xFFFFFFC000000000
.else
TEXTADDR?=		0x80200000
.endif
KERNLDSCRIPT?=		${RISCV}/conf/kern.ldscript
EXTRA_LINKFLAGS=	${LDOPTS} --relax
LINKFLAGS_NORMAL=	-X
OBJCOPY_STRIPFLAGS=	-g -X

# Set the physical load address (aka LMA) to the address that OpenSBI's
# fw_jump jumps to.  This allows us to load the kernel with the -kernel flag
# in QEMU without having to embed it inside BBL or OpenSBI's fw_payload first.
#
KERNEL_PHYS?=		0x80200000
EXTRA_LINKFLAGS+=	--defsym='KERNEL_PHYS=${KERNEL_PHYS}'

##
## (6) port specific target dependencies
##

# depend on CPU configuration
machdep.o mainbus.o trap.o: Makefile

# depend on System V IPC/shmem options
riscv_machdep.o pmap.o: Makefile

# various assembly files that depend on assym.h
locore.o: assym.h

##
## (7) misc settings
##
RAMDISKDIR!=    cd ${NETBSDSRCDIR}/distrib/riscv/ramdisk && ${PRINTOBJDIR}

.if defined(NEED_MDSETIMAGE) && ${NEED_MDSETIMAGE} != "no" \
    && defined(RAMDISKDIR) && exists(${RAMDISKDIR}/ramdisk.fs)
SYSTEM_DEP+=    ${RAMDISKDIR}/ramdisk.fs
SYSTEM_LD_TAIL_EXTRA+=; \
	echo ${TOOL_MDSETIMAGE} -s $@ ${RAMDISKDIR}/ramdisk.fs; \
	${TOOL_MDSETIMAGE} -s $@ ${RAMDISKDIR}/ramdisk.fs
.if !empty(DEBUG:M-g*)
SYSTEM_LD_TAIL_EXTRA+=; \
	echo ${TOOL_MDSETIMAGE} -s $@.gdb ${RAMDISKDIR}/ramdisk.fs; \
	${TOOL_MDSETIMAGE} -s $@.gdb ${RAMDISKDIR}/ramdisk.fs
.endif
.endif

##
## (8) config(8) generated machinery
##
%INCLUDES

%OBJS

%CFILES

%SFILES

%LOAD

%RULES

##
## (9) port independent kernel machinery
##
.include "$S/conf/Makefile.kern.inc"

##
## (10) Appending make options.
##
%MAKEOPTIONSAPPEND