Makefile.riscv revision 1.7 
1#	$NetBSD: Makefile.riscv,v 1.7 2021/05/01 07:13:21 skrll Exp $
2
3# Makefile for NetBSD
4#
5# This makefile is constructed from a machine description:
6#	config machineid
7# Most changes should be made in the machine description
8#	/sys/arch/<machine>/conf/``machineid''
9# after which you should do
10#	config machineid
11# Machine generic makefile changes should be made in
12#	/sys/arch/riscv/conf/Makefile.riscv
13# after which config should be rerun for all machines of that type.
14#
15# To specify debugging, add the config line: makeoptions DEBUG="-g"
16# A better way is to specify -g only for a few files.
17#
18#	makeoptions DEBUGLIST="uvm* trap if_*"
19
20USETOOLS?=	no
21NEED_OWN_INSTALL_TARGET?=no
22.include <bsd.own.mk>
23
24##
25## (1) port identification
26##
27.ifndef S
28S=		../../../..
29.endif
30THISRISCV=	$S/arch/${MACHINE}
31RISCV=		$S/arch/riscv
32GENASSYM_CONF=	${RISCV}/riscv/genassym.cf
33.-include "${THISRISCV}/conf/Makefile.${MACHINE}.inc"
34
35##
36## (2) compile settings
37##
38## Note: -ffixed-?? must be kept in sync with cpu.h.
39##
40CPPFLAGS+=	-D${MACHINE}
41CFLAGS+=	-mcmodel=medany
42.if !defined(LP64) || ${LP64} == "no"
43CFLAGS+=	-m32
44AFLAGS+=	-m32
45LDFLAGS+=	-m elf32lriscv
46LINKFORMAT+=	-m elf32lriscv
47SYSTEM_LD_TAIL_EXTRA+= \
48		;echo ${OBJCOPY} -O elf32-littleriscv $@ $@.elf32; \
49		${OBJCOPY} -O elf32-littleriscv $@ $@.elf32
50.endif # LP64=no
51AFLAGS+=	-x assembler-with-cpp ${AOPTS}
52
53##
54## (3) libkern and compat
55##
56OPT_MODULAR=	%MODULAR%
57
58##
59## (4) local objects, compile rules, and dependencies
60##
61MD_OBJS=	locore.o
62MD_CFILES=
63MD_SFILES=	${RISCV}/riscv/locore.S
64
65locore.o: ${RISCV}/riscv/locore.S assym.h
66	${NORMAL_S}
67
68##
69## (5) link settings
70##
71.if ${MACHINE_ARCH} == "riscv64" && ${LP64:Uyes} == "yes"
72TEXTADDR?=		0xFFFFFFC000000000
73.else
74TEXTADDR?=		0xC0001000
75.endif
76KERNLDSCRIPT?=		${RISCV}/conf/kern.ldscript
77EXTRA_LINKFLAGS=	${LDOPTS} --relax
78LINKFLAGS_NORMAL=	-X
79STRIPFLAGS=		-g -X
80
81# Set the physical load address (aka LMA) to the address that OpenSBI's
82# fw_jump jumps to.  This allows us to load the kernel with the -kernel flag
83# in QEMU without having to embed it inside BBL or OpenSBI's fw_payload first.
84#
85KERNEL_PHYS?=		0x80200000
86EXTRA_LINKFLAGS+=	--defsym='KERNEL_PHYS=${KERNEL_PHYS}'
87
88##
89## (6) port specific target dependencies
90##
91
92# depend on CPU configuration
93machdep.o mainbus.o trap.o: Makefile
94
95# depend on System V IPC/shmem options
96riscv_machdep.o pmap.o: Makefile
97
98# various assembly files that depend on assym.h
99locore.o: assym.h
100
101##
102## (7) misc settings
103##
104RAMDISKDIR!=    cd ${NETBSDSRCDIR}/distrib/riscv/ramdisk && ${PRINTOBJDIR}
105
106.if defined(NEED_MDSETIMAGE) && ${NEED_MDSETIMAGE} != "no" \
107    && defined(RAMDISKDIR) && exists(${RAMDISKDIR}/ramdisk.fs)
108SYSTEM_DEP+=    ${RAMDISKDIR}/ramdisk.fs
109SYSTEM_LD_TAIL_EXTRA+=; \
110	echo ${TOOL_MDSETIMAGE} -s $@ ${RAMDISKDIR}/ramdisk.fs; \
111	${TOOL_MDSETIMAGE} -s $@ ${RAMDISKDIR}/ramdisk.fs
112.if !empty(DEBUG:M-g*)
113SYSTEM_LD_TAIL_EXTRA+=; \
114	echo ${TOOL_MDSETIMAGE} -s $@.gdb ${RAMDISKDIR}/ramdisk.fs; \
115	${TOOL_MDSETIMAGE} -s $@.gdb ${RAMDISKDIR}/ramdisk.fs
116.endif
117.endif
118
119##
120## (8) config(8) generated machinery
121##
122%INCLUDES
123
124%OBJS
125
126%CFILES
127
128%SFILES
129
130%LOAD
131
132%RULES
133
134##
135## (9) port independent kernel machinery
136##
137.include "$S/conf/Makefile.kern.inc"
138
139##
140## (10) Appending make options.
141##
142%MAKEOPTIONSAPPEND
143