defs.mk revision 360605 
1# $FreeBSD: stable/11/stand/defs.mk 360605 2020-05-03 15:08:32Z dim $
2
3.if !defined(__BOOT_DEFS_MK__)
4__BOOT_DEFS_MK__=${MFILE}
5
6# We need to define all the MK_ options before including src.opts.mk
7# because it includes bsd.own.mk which needs the right MK_ values,
8# espeically MK_CTF.
9
10MK_CTF=		no
11MK_SSP=		no
12MK_PROFILE=	no
13MAN=
14.if !defined(PIC)
15NO_PIC=
16INTERNALLIB=
17.endif
18
19.include <src.opts.mk>
20
21WARNS?=		1
22
23BOOTSRC=	${SRCTOP}/stand
24EFISRC=		${BOOTSRC}/efi
25EFIINC=		${EFISRC}/include
26EFIINCMD=	${EFIINC}/${MACHINE}
27FDTSRC=		${BOOTSRC}/fdt
28FICLSRC=	${BOOTSRC}/ficl
29LDRSRC=		${BOOTSRC}/common
30LIBLUASRC=	${BOOTSRC}/liblua
31LUASRC=		${SRCTOP}/contrib/lua/src
32SASRC=		${BOOTSRC}/libsa
33SYSDIR=		${SRCTOP}/sys
34UBOOTSRC=	${BOOTSRC}/uboot
35ZFSSRC=		${SASRC}/zfs
36LIBCSRC=	${SRCTOP}/lib/libc
37
38BOOTOBJ=	${OBJTOP}/stand
39
40# BINDIR is where we install
41BINDIR?=	/boot
42
43# LUAPATH is where we search for and install lua scripts.
44LUAPATH?=	/boot/lua
45FLUASRC?=	${SRCTOP}/libexec/flua
46
47LIBSA=		${BOOTOBJ}/libsa/libsa.a
48.if ${MACHINE} == "i386"
49LIBSA32=	${LIBSA}
50.else
51LIBSA32=	${BOOTOBJ}/libsa32/libsa32.a
52.endif
53
54# Standard options:
55CFLAGS+=	-nostdinc
56.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
57CFLAGS+=	-I${BOOTOBJ}/libsa32
58.else
59CFLAGS+=	-I${BOOTOBJ}/libsa
60.endif
61CFLAGS+=	-I${SASRC} -D_STANDALONE
62CFLAGS+=	-I${SYSDIR}
63# Spike the floating point interfaces
64CFLAGS+=	-Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
65.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
66# Slim down the image. This saves about 15% in size with clang 6 on x86
67# Our most constrained /boot/loader env is BIOS booting on x86, where
68# our text + data + BTX have to fit into 640k below the ISA hole.
69# Experience has shown that problems arise between ~520k to ~530k.
70CFLAGS.clang+=	-Oz
71CFLAGS.gcc+=	-Os
72CFLAGS+=	-ffunction-sections -fdata-sections
73.endif
74
75# GELI Support, with backward compat hooks (mostly)
76.if defined(LOADER_NO_GELI_SUPPORT)
77MK_LOADER_GELI=no
78.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
79.endif
80.if defined(LOADER_GELI_SUPPORT)
81MK_LOADER_GELI=yes
82.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
83.endif
84.if ${MK_LOADER_GELI} == "yes"
85CFLAGS+=	-DLOADER_GELI_SUPPORT
86CFLAGS+=	-I${SASRC}/geli
87.endif # MK_LOADER_GELI
88
89# These should be confined to loader.mk, but can't because uboot/lib
90# also uses it. It's part of loader, but isn't a loader so we can't
91# just include loader.mk
92.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
93CFLAGS+= -DLOADER_DISK_SUPPORT
94.endif
95
96# Machine specific flags for all builds here
97
98# All PowerPC builds are 32 bit. We have no 64-bit loaders on powerpc
99# or powerpc64.
100.if ${MACHINE_ARCH} == "powerpc64"
101CFLAGS+=	-m32 -mcpu=powerpc
102.endif
103
104# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
105# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
106# and activate it when DO32 is explicitly defined to be 1.
107.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
108CFLAGS+=	-m32
109# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
110LD_FLAGS+=	-m elf_i386_fbsd
111AFLAGS+=	--32
112.endif
113
114SSP_CFLAGS=
115
116# Add in the no float / no SIMD stuff and announce we're freestanding
117# aarch64 and riscv don't have -msoft-float, but all others do. riscv
118# currently has no /boot/loader, but may soon.
119CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
120.if ${MACHINE_CPUARCH} == "aarch64"
121CFLAGS+=	-mgeneral-regs-only -fPIC
122.elif ${MACHINE_CPUARCH} == "riscv"
123CFLAGS+=	-march=rv64imac -mabi=lp64
124.else
125CFLAGS+=	-msoft-float
126.endif
127
128# -msoft-float seems to be insufficient for powerpcspe
129.if ${MACHINE_ARCH} == "powerpcspe"
130CFLAGS+=	-mno-spe
131.endif
132
133.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
134CFLAGS+=	-march=i386
135CFLAGS.gcc+=	-mpreferred-stack-boundary=2
136.endif
137.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
138CFLAGS+=	-fPIC -mno-red-zone
139.endif
140
141.if ${MACHINE_CPUARCH} == "arm"
142# Do not generate movt/movw, because the relocation fixup for them does not
143# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
144# Also, the fpu is not available in a standalone environment.
145.if ${COMPILER_VERSION} < 30800
146CFLAGS.clang+=	-mllvm -arm-use-movt=0
147.else
148CFLAGS.clang+=	-mno-movt
149.endif
150CFLAGS.clang+=  -mfpu=none
151CFLAGS+=	-fPIC
152.endif
153
154# The boot loader build uses dd status=none, where possible, for reproducible
155# build output (since performance varies from run to run). Trouble is that
156# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
157# when this test succeeds rather than require dd to be a bootstrap tool.
158DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
159DD=dd ${DD_NOSTATUS}
160
161.if ${MACHINE_CPUARCH} == "mips"
162CFLAGS+=	-G0 -fno-pic -mno-abicalls
163.endif
164
165.if ${MK_LOADER_FORCE_LE} != "no"
166.if ${MACHINE_ARCH} == "powerpc64"
167CFLAGS+=	-mlittle-endian
168.endif
169.endif
170
171#
172# Have a sensible default
173#
174# XXX Do not change the ordering of this chain in this branch.  4th must remain
175# the default for the lifetime of stable/11.
176.if ${MK_FORTH} == "yes"
177LOADER_DEFAULT_INTERP?=4th
178.elif ${MK_LOADER_LUA} == "yes"
179LOADER_DEFAULT_INTERP?=lua
180.else
181LOADER_DEFAULT_INTERP?=simp
182.endif
183LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
184
185# Make sure we use the machine link we're about to create
186CFLAGS+=-I.
187
188all: ${PROG}
189
190.if !defined(NO_OBJ)
191_ILINKS=machine
192.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
193_ILINKS+=${MACHINE_CPUARCH}
194.endif
195.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
196_ILINKS+=x86
197.endif
198CLEANFILES+=${_ILINKS}
199
200beforedepend: ${_ILINKS}
201beforebuild: ${_ILINKS}
202
203# Ensure that the links exist without depending on it when it exists which
204# causes all the modules to be rebuilt when the directory pointed to changes.
205.for _link in ${_ILINKS}
206.if !exists(${.OBJDIR}/${_link})
207${OBJS}:       ${_link}
208.endif # _link exists
209.endfor
210
211.NOPATH: ${_ILINKS}
212
213${_ILINKS}:
214	@case ${.TARGET} in \
215	machine) \
216		if [ ${DO32:U0} -eq 0 ]; then \
217			path=${SYSDIR}/${MACHINE}/include ; \
218		else \
219			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
220		fi ;; \
221	*) \
222		path=${SYSDIR}/${.TARGET:T}/include ;; \
223	esac ; \
224	path=`(cd $$path && /bin/pwd)` ; \
225	${ECHO} ${.TARGET:T} "->" $$path ; \
226	ln -fhs $$path ${.TARGET:T}
227.endif # !NO_OBJ
228.endif # __BOOT_DEFS_MK__
229