1# $FreeBSD$
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.include <bsd.linker.mk>
21
22WARNS?=		1
23
24BOOTSRC=	${SRCTOP}/stand
25EFISRC=		${BOOTSRC}/efi
26EFIINC=		${EFISRC}/include
27EFIINCMD=	${EFIINC}/${MACHINE}
28FDTSRC=		${BOOTSRC}/fdt
29FICLSRC=	${BOOTSRC}/ficl
30LDRSRC=		${BOOTSRC}/common
31LIBLUASRC=	${BOOTSRC}/liblua
32LIBOFWSRC=	${BOOTSRC}/libofw
33LUASRC=		${SRCTOP}/contrib/lua/src
34SASRC=		${BOOTSRC}/libsa
35SYSDIR=		${SRCTOP}/sys
36UBOOTSRC=	${BOOTSRC}/uboot
37ZFSSRC=		${SASRC}/zfs
38OZFS=		${SRCTOP}/sys/contrib/openzfs
39ZFSOSSRC=	${OZFS}/module/os/freebsd/
40ZFSOSINC=	${OZFS}/include/os/freebsd
41LIBCSRC=	${SRCTOP}/lib/libc
42
43BOOTOBJ=	${OBJTOP}/stand
44
45# BINDIR is where we install
46BINDIR?=	/boot
47
48# LUAPATH is where we search for and install lua scripts.
49LUAPATH?=	/boot/lua
50FLUASRC?=	${SRCTOP}/libexec/flua
51
52LIBSA=		${BOOTOBJ}/libsa/libsa.a
53.if ${MACHINE} == "i386"
54LIBSA32=	${LIBSA}
55.else
56LIBSA32=	${BOOTOBJ}/libsa32/libsa32.a
57.endif
58
59# Standard options:
60CFLAGS+=	-nostdinc
61# Allow CFLAGS_EARLY.file/target so that code that needs specific stack
62# of include paths can set them up before our include paths. Normally
63# the only thing that should be there are -I directives, and as few of
64# those as possible.
65CFLAGS+=	${CFLAGS_EARLY} ${CFLAGS_EARLY.${.IMPSRC:T}} ${CFLAGS_EARLY.${.TARGET:T}}
66.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
67CFLAGS+=	-I${BOOTOBJ}/libsa32
68.else
69CFLAGS+=	-I${BOOTOBJ}/libsa
70.endif
71CFLAGS+=	-I${SASRC} -D_STANDALONE
72CFLAGS+=	-I${SYSDIR}
73# Spike the floating point interfaces
74CFLAGS+=	-Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
75.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
76# Slim down the image. This saves about 15% in size with clang 6 on x86
77# Our most constrained /boot/loader env is BIOS booting on x86, where
78# our text + data + BTX have to fit into 640k below the ISA hole.
79# Experience has shown that problems arise between ~520k to ~530k.
80CFLAGS.clang+=	-Oz
81CFLAGS.gcc+=	-Os
82CFLAGS+=	-ffunction-sections -fdata-sections
83.endif
84
85# GELI Support, with backward compat hooks (mostly)
86.if defined(LOADER_NO_GELI_SUPPORT)
87MK_LOADER_GELI=no
88.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
89.endif
90.if defined(LOADER_GELI_SUPPORT)
91MK_LOADER_GELI=yes
92.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
93.endif
94.if ${MK_LOADER_GELI} == "yes"
95CFLAGS+=	-DLOADER_GELI_SUPPORT
96CFLAGS+=	-I${SASRC}/geli
97.endif # MK_LOADER_GELI
98
99# These should be confined to loader.mk, but can't because uboot/lib
100# also uses it. It's part of loader, but isn't a loader so we can't
101# just include loader.mk
102.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
103CFLAGS+= -DLOADER_DISK_SUPPORT
104.endif
105
106# Machine specific flags for all builds here
107
108# Ensure PowerPC64 and PowerPC64LE boot loaders are compiled as 32 bit
109# and in big endian.
110.if ${MACHINE_ARCH:Mpowerpc64*} != ""
111CFLAGS+=	-m32 -mcpu=powerpc -mbig-endian
112.endif
113
114# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
115# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
116# and activate it when DO32 is explicitly defined to be 1.
117.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
118CFLAGS+=	-m32
119# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
120LD_FLAGS+=	-m elf_i386_fbsd
121AFLAGS+=	--32
122.endif
123
124SSP_CFLAGS=
125
126# Add in the no float / no SIMD stuff and announce we're freestanding
127# aarch64 and riscv don't have -msoft-float, but all others do.
128CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
129.if ${MACHINE_CPUARCH} == "aarch64"
130CFLAGS+=	-mgeneral-regs-only -ffixed-x18 -fPIC
131.elif ${MACHINE_CPUARCH} == "riscv"
132CFLAGS+=	-march=rv64imac -mabi=lp64 -fPIC
133CFLAGS.clang+=	-mcmodel=medium
134CFLAGS.gcc+=	-mcmodel=medany
135.else
136CFLAGS+=	-msoft-float
137.endif
138
139# -msoft-float seems to be insufficient for powerpcspe
140.if ${MACHINE_ARCH} == "powerpcspe"
141CFLAGS+=	-mno-spe
142.endif
143
144.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
145CFLAGS+=	-march=i386
146CFLAGS.gcc+=	-mpreferred-stack-boundary=2
147.endif
148.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
149CFLAGS+=	-fPIC -mno-red-zone
150.endif
151
152.if ${MACHINE_CPUARCH} == "arm"
153# Do not generate movt/movw, because the relocation fixup for them does not
154# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
155# Also, the fpu is not available in a standalone environment.
156CFLAGS.clang+=	-mno-movt
157CFLAGS.clang+=  -mfpu=none
158CFLAGS+=	-fPIC
159.endif
160
161# Some RISC-V linkers have support for relaxations, while some (lld) do not
162# yet. If this is the case we inhibit the compiler from emitting relaxations.
163.if ${LINKER_FEATURES:Mriscv-relaxations} == ""
164CFLAGS+=	-mno-relax
165.endif
166
167# The boot loader build uses dd status=none, where possible, for reproducible
168# build output (since performance varies from run to run). Trouble is that
169# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
170# when this test succeeds rather than require dd to be a bootstrap tool.
171DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
172DD=dd ${DD_NOSTATUS}
173
174.if ${MACHINE_CPUARCH} == "mips"
175CFLAGS+=	-G0 -fno-pic -mno-abicalls
176.endif
177
178#
179# Have a sensible default
180#
181.if ${MK_LOADER_LUA} == "yes"
182LOADER_DEFAULT_INTERP?=lua
183.elif ${MK_FORTH} == "yes"
184LOADER_DEFAULT_INTERP?=4th
185.else
186LOADER_DEFAULT_INTERP?=simp
187.endif
188LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
189
190# Make sure we use the machine link we're about to create
191CFLAGS+=-I.
192
193all: ${PROG}
194
195CLEANFILES+= teken_state.h
196teken.c: teken_state.h
197
198teken_state.h: ${SYSDIR}/teken/sequences
199	awk -f ${SYSDIR}/teken/gensequences \
200		${SYSDIR}/teken/sequences > teken_state.h
201
202.if !defined(NO_OBJ)
203_ILINKS=include/machine
204.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
205_ILINKS+=include/${MACHINE_CPUARCH}
206.endif
207.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
208_ILINKS+=include/x86
209.endif
210CFLAGS+= -Iinclude
211CLEANDIRS+= include
212
213beforedepend: ${_ILINKS}
214beforebuild: ${_ILINKS}
215
216# Ensure that the links exist without depending on it when it exists which
217# causes all the modules to be rebuilt when the directory pointed to changes.
218.for _link in ${_ILINKS}
219.if !exists(${.OBJDIR}/${_link})
220${OBJS}:       ${_link}
221.endif # _link exists
222.endfor
223
224.NOPATH: ${_ILINKS}
225
226${_ILINKS}: .NOMETA
227	@case ${.TARGET:T} in \
228	machine) \
229		if [ ${DO32:U0} -eq 0 ]; then \
230			path=${SYSDIR}/${MACHINE}/include ; \
231		else \
232			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
233		fi ;; \
234	*) \
235		path=${SYSDIR}/${.TARGET:T}/include ;; \
236	esac ; \
237	case ${.TARGET} in \
238	*/*) mkdir -p ${.TARGET:H};; \
239	esac ; \
240	path=`(cd $$path && /bin/pwd)` ; \
241	${ECHO} ${.TARGET} "->" $$path ; \
242	ln -fns $$path ${.TARGET}
243.endif # !NO_OBJ
244.endif # __BOOT_DEFS_MK__
245