1# $FreeBSD: stable/11/stand/defs.mk 360614 2020-05-03 18:46:03Z 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
72.endif
73
74# GELI Support, with backward compat hooks (mostly)
75.if defined(LOADER_NO_GELI_SUPPORT)
76MK_LOADER_GELI=no
77.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
78.endif
79.if defined(LOADER_GELI_SUPPORT)
80MK_LOADER_GELI=yes
81.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
82.endif
83.if ${MK_LOADER_GELI} == "yes"
84CFLAGS+=	-DLOADER_GELI_SUPPORT
85CFLAGS+=	-I${SASRC}/geli
86.endif # MK_LOADER_GELI
87
88# These should be confined to loader.mk, but can't because uboot/lib
89# also uses it. It's part of loader, but isn't a loader so we can't
90# just include loader.mk
91.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
92CFLAGS+= -DLOADER_DISK_SUPPORT
93.endif
94
95# Machine specific flags for all builds here
96
97# All PowerPC builds are 32 bit. We have no 64-bit loaders on powerpc
98# or powerpc64.
99.if ${MACHINE_ARCH} == "powerpc64"
100CFLAGS+=	-m32 -mcpu=powerpc
101.endif
102
103# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
104# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
105# and activate it when DO32 is explicitly defined to be 1.
106.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
107CFLAGS+=	-m32
108# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
109LD_FLAGS+=	-m elf_i386_fbsd
110AFLAGS+=	--32
111.endif
112
113SSP_CFLAGS=
114
115# Add in the no float / no SIMD stuff and announce we're freestanding
116# aarch64 and riscv don't have -msoft-float, but all others do. riscv
117# currently has no /boot/loader, but may soon.
118CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
119.if ${MACHINE_CPUARCH} == "aarch64"
120CFLAGS+=	-mgeneral-regs-only -fPIC
121.elif ${MACHINE_CPUARCH} == "riscv"
122CFLAGS+=	-march=rv64imac -mabi=lp64
123.else
124CFLAGS+=	-msoft-float
125.endif
126
127# -msoft-float seems to be insufficient for powerpcspe
128.if ${MACHINE_ARCH} == "powerpcspe"
129CFLAGS+=	-mno-spe
130.endif
131
132.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
133CFLAGS+=	-march=i386
134CFLAGS.gcc+=	-mpreferred-stack-boundary=2
135.endif
136.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
137CFLAGS+=	-fPIC -mno-red-zone
138.endif
139
140.if ${MACHINE_CPUARCH} == "arm"
141# Do not generate movt/movw, because the relocation fixup for them does not
142# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
143# Also, the fpu is not available in a standalone environment.
144.if ${COMPILER_VERSION} < 30800
145CFLAGS.clang+=	-mllvm -arm-use-movt=0
146.else
147CFLAGS.clang+=	-mno-movt
148.endif
149CFLAGS.clang+=  -mfpu=none
150CFLAGS+=	-fPIC
151.endif
152
153# The boot loader build uses dd status=none, where possible, for reproducible
154# build output (since performance varies from run to run). Trouble is that
155# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
156# when this test succeeds rather than require dd to be a bootstrap tool.
157DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
158DD=dd ${DD_NOSTATUS}
159
160.if ${MACHINE_CPUARCH} == "mips"
161CFLAGS+=	-G0 -fno-pic -mno-abicalls
162.endif
163
164.if ${MK_LOADER_FORCE_LE} != "no"
165.if ${MACHINE_ARCH} == "powerpc64"
166CFLAGS+=	-mlittle-endian
167.endif
168.endif
169
170#
171# Have a sensible default
172#
173# XXX Do not change the ordering of this chain in this branch.  4th must remain
174# the default for the lifetime of stable/11.
175.if ${MK_FORTH} == "yes"
176LOADER_DEFAULT_INTERP?=4th
177.elif ${MK_LOADER_LUA} == "yes"
178LOADER_DEFAULT_INTERP?=lua
179.else
180LOADER_DEFAULT_INTERP?=simp
181.endif
182LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
183
184# Make sure we use the machine link we're about to create
185CFLAGS+=-I.
186
187all: ${PROG}
188
189.if !defined(NO_OBJ)
190_ILINKS=machine
191.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
192_ILINKS+=${MACHINE_CPUARCH}
193.endif
194.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
195_ILINKS+=x86
196.endif
197CLEANFILES+=${_ILINKS}
198
199beforedepend: ${_ILINKS}
200beforebuild: ${_ILINKS}
201
202# Ensure that the links exist without depending on it when it exists which
203# causes all the modules to be rebuilt when the directory pointed to changes.
204.for _link in ${_ILINKS}
205.if !exists(${.OBJDIR}/${_link})
206${OBJS}:       ${_link}
207.endif # _link exists
208.endfor
209
210.NOPATH: ${_ILINKS}
211
212${_ILINKS}:
213	@case ${.TARGET} in \
214	machine) \
215		if [ ${DO32:U0} -eq 0 ]; then \
216			path=${SYSDIR}/${MACHINE}/include ; \
217		else \
218			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
219		fi ;; \
220	*) \
221		path=${SYSDIR}/${.TARGET:T}/include ;; \
222	esac ; \
223	path=`(cd $$path && /bin/pwd)` ; \
224	${ECHO} ${.TARGET:T} "->" $$path ; \
225	ln -fhs $$path ${.TARGET:T}
226.endif # !NO_OBJ
227.endif # __BOOT_DEFS_MK__
228