1
2.if !defined(__BOOT_DEFS_MK__)
3__BOOT_DEFS_MK__=${MFILE}
4
5# We need to define all the MK_ options before including src.opts.mk
6# because it includes bsd.own.mk which needs the right MK_ values,
7# espeically MK_CTF.
8
9MK_CTF=		no
10MK_SSP=		no
11MK_PROFILE=	no
12MK_PIE=		no
13MAN=
14.if !defined(PIC)
15NO_PIC=
16INTERNALLIB=
17.endif
18# Should be NO_CPU_FLAGS, but bsd.cpu.mk is included too early in bsd.init.mk
19# via the early include of bsd.opts.mk. Moving Makefile.inc include earlier in
20# that file causes weirdness, so this is the next best thing. We need to do this
21# because the loader needs very specific flags to work right, and things like
22# CPUTYPE?=native prevent that, and introduce an endless game of whack-a-mole
23# to disable more and more features. Boot loader performance is never improved
24# enough to make that hassle worth chasing.
25_CPUCFLAGS=
26
27.if ${LDFLAGS:M-nostdlib}
28# Sanitizers won't work unless we link against libc (e.g. in userboot/test).
29MK_ASAN:=	no
30MK_UBSAN:=	no
31.endif
32
33.include <src.opts.mk>
34.include <bsd.linker.mk>
35
36WARNS?=		1
37
38BOOTSRC=	${SRCTOP}/stand
39EFISRC=		${BOOTSRC}/efi
40EFIINC=		${EFISRC}/include
41EFIINCMD=	${EFIINC}/${MACHINE}
42FDTSRC=		${BOOTSRC}/fdt
43FICLSRC=	${BOOTSRC}/ficl
44LDRSRC=		${BOOTSRC}/common
45LIBLUASRC=	${BOOTSRC}/liblua
46LIBOFWSRC=	${BOOTSRC}/libofw
47LUASRC=		${SRCTOP}/contrib/lua/src
48SASRC=		${BOOTSRC}/libsa
49SYSDIR=		${SRCTOP}/sys
50UBOOTSRC=	${BOOTSRC}/uboot
51ZFSSRC=		${SASRC}/zfs
52OZFS=		${SRCTOP}/sys/contrib/openzfs
53ZFSOSSRC=	${OZFS}/module/os/freebsd/
54ZFSOSINC=	${OZFS}/include/os/freebsd
55LIBCSRC=	${SRCTOP}/lib/libc
56
57BOOTOBJ=	${OBJTOP}/stand
58
59# BINDIR is where we install
60BINDIR?=	/boot
61
62# LUAPATH is where we search for and install lua scripts.
63LUAPATH?=	/boot/lua
64FLUASRC?=	${SRCTOP}/libexec/flua
65FLUALIB?=	${SRCTOP}/lib/flua
66
67LIBSA=		${BOOTOBJ}/libsa/libsa.a
68.if ${MACHINE} == "i386"
69LIBSA32=	${LIBSA}
70.else
71LIBSA32=	${BOOTOBJ}/libsa32/libsa32.a
72.endif
73
74# Standard options:
75CFLAGS+=	-nostdinc
76# Allow CFLAGS_EARLY.file/target so that code that needs specific stack
77# of include paths can set them up before our include paths. Normally
78# the only thing that should be there are -I directives, and as few of
79# those as possible.
80CFLAGS+=	${CFLAGS_EARLY} ${CFLAGS_EARLY.${.IMPSRC:T}} ${CFLAGS_EARLY.${.TARGET:T}}
81.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
82CFLAGS+=	-I${BOOTOBJ}/libsa32
83.else
84CFLAGS+=	-I${BOOTOBJ}/libsa
85.endif
86CFLAGS+=	-I${SASRC} -D_STANDALONE
87CFLAGS+=	-I${SYSDIR}
88# Spike the floating point interfaces
89CFLAGS+=	-Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
90.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
91# Slim down the image. This saves about 15% in size with clang 6 on x86
92# Our most constrained /boot/loader env is BIOS booting on x86, where
93# our text + data + BTX have to fit into 640k below the ISA hole.
94# Experience has shown that problems arise between ~520k to ~530k.
95CFLAGS.clang+=	-Oz
96CFLAGS.gcc+=	-Os
97CFLAGS+=	-ffunction-sections -fdata-sections
98.endif
99
100# GELI Support, with backward compat hooks (mostly)
101.if defined(LOADER_NO_GELI_SUPPORT)
102MK_LOADER_GELI=no
103.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
104.endif
105.if defined(LOADER_GELI_SUPPORT)
106MK_LOADER_GELI=yes
107.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
108.endif
109.if ${MK_LOADER_GELI} == "yes"
110CFLAGS+=	-DLOADER_GELI_SUPPORT
111CFLAGS+=	-I${SASRC}/geli
112.endif # MK_LOADER_GELI
113
114# These should be confined to loader.mk, but can't because uboot/lib
115# also uses it. It's part of loader, but isn't a loader so we can't
116# just include loader.mk
117.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
118CFLAGS+= -DLOADER_DISK_SUPPORT
119.endif
120
121# Machine specific flags for all builds here
122
123# Ensure PowerPC64 and PowerPC64LE boot loaders are compiled as 32 bit.
124# PowerPC64LE boot loaders are 32-bit little-endian.
125.if ${MACHINE_ARCH} == "powerpc64"
126CFLAGS+=	-m32 -mcpu=powerpc -mbig-endian
127.elif ${MACHINE_ARCH} == "powerpc64le"
128CFLAGS+=	-m32 -mcpu=powerpc -mlittle-endian
129.endif
130
131# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
132# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
133# and activate it when DO32 is explicitly defined to be 1.
134.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
135CFLAGS+=	-m32
136# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
137LD_FLAGS+=	-m elf_i386_fbsd
138AFLAGS+=	--32
139.endif
140
141# Add in the no float / no SIMD stuff and announce we're freestanding
142# aarch64 and riscv don't have -msoft-float, but all others do.
143CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
144.if ${MACHINE_CPUARCH} == "aarch64"
145CFLAGS+=	-mgeneral-regs-only -ffixed-x18 -fPIC
146.elif ${MACHINE_CPUARCH} == "riscv"
147CFLAGS+=	-march=rv64imac -mabi=lp64 -fPIC
148CFLAGS.clang+=	-mcmodel=medium
149CFLAGS.gcc+=	-mcmodel=medany
150.else
151CFLAGS+=	-msoft-float
152.endif
153
154# -msoft-float seems to be insufficient for powerpcspe
155.if ${MACHINE_ARCH} == "powerpcspe"
156CFLAGS+=	-mno-spe
157.endif
158
159.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
160CFLAGS+=	-march=i386
161CFLAGS.gcc+=	-mpreferred-stack-boundary=2
162.endif
163.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
164CFLAGS+=	-fPIC -mno-red-zone
165.endif
166
167.if ${MACHINE_CPUARCH} == "arm"
168# Do not generate movt/movw, because the relocation fixup for them does not
169# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
170# Also, the fpu is not available in a standalone environment.
171CFLAGS.clang+=	-mno-movt
172CFLAGS.clang+=  -mfpu=none
173CFLAGS+=	-fPIC
174.endif
175
176# Some RISC-V linkers have support for relaxations, while some (lld) do not
177# yet. If this is the case we inhibit the compiler from emitting relaxations.
178.if ${LINKER_FEATURES:Mriscv-relaxations} == ""
179CFLAGS+=	-mno-relax
180.endif
181
182# The boot loader build uses dd status=none, where possible, for reproducible
183# build output (since performance varies from run to run). Trouble is that
184# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
185# when this test succeeds rather than require dd to be a bootstrap tool.
186DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
187DD=dd ${DD_NOSTATUS}
188
189#
190# Have a sensible default
191#
192.if ${MK_LOADER_LUA} == "yes"
193LOADER_DEFAULT_INTERP?=lua
194.elif ${MK_FORTH} == "yes"
195LOADER_DEFAULT_INTERP?=4th
196.else
197LOADER_DEFAULT_INTERP?=simp
198.endif
199LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
200
201# Make sure we use the machine link we're about to create
202CFLAGS+=-I.
203
204all: ${PROG}
205
206CLEANFILES+= teken_state.h
207teken.c: teken_state.h
208
209teken_state.h: ${SYSDIR}/teken/sequences
210	awk -f ${SYSDIR}/teken/gensequences \
211		${SYSDIR}/teken/sequences > teken_state.h
212
213.if !defined(NO_OBJ)
214_ILINKS=include/machine
215.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
216_ILINKS+=include/${MACHINE_CPUARCH}
217.endif
218.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
219_ILINKS+=include/x86
220.endif
221CFLAGS+= -Iinclude
222CLEANDIRS+= include
223
224beforedepend: ${_ILINKS}
225beforebuild: ${_ILINKS}
226
227# Ensure that the links exist without depending on it when it exists which
228# causes all the modules to be rebuilt when the directory pointed to changes.
229.for _link in ${_ILINKS}
230.if !exists(${.OBJDIR}/${_link})
231${OBJS}:       ${_link}
232.endif # _link exists
233.endfor
234
235.NOPATH: ${_ILINKS}
236
237${_ILINKS}: .NOMETA
238	@case ${.TARGET:T} in \
239	machine) \
240		if [ ${DO32:U0} -eq 0 ]; then \
241			path=${SYSDIR}/${MACHINE}/include ; \
242		else \
243			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
244		fi ;; \
245	*) \
246		path=${SYSDIR}/${.TARGET:T}/include ;; \
247	esac ; \
248	case ${.TARGET} in \
249	*/*) mkdir -p ${.TARGET:H};; \
250	esac ; \
251	path=`(cd $$path && /bin/pwd)` ; \
252	${ECHO} ${.TARGET} "->" $$path ; \
253	ln -fns $$path ${.TARGET}
254.endif # !NO_OBJ
255.endif # __BOOT_DEFS_MK__
256