defs.mk revision 351515 
1# $FreeBSD: stable/11/stand/defs.mk 351515 2019-08-26 17:34:07Z kevans $
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
43LIBSA=		${BOOTOBJ}/libsa/libsa.a
44.if ${MACHINE} == "i386"
45LIBSA32=	${LIBSA}
46.else
47LIBSA32=	${BOOTOBJ}/libsa32/libsa32.a
48.endif
49
50# Standard options:
51CFLAGS+=	-nostdinc
52.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
53CFLAGS+=	-I${BOOTOBJ}/libsa32
54.else
55CFLAGS+=	-I${BOOTOBJ}/libsa
56.endif
57CFLAGS+=	-I${SASRC} -D_STANDALONE
58CFLAGS+=	-I${SYSDIR}
59# Spike the floating point interfaces
60CFLAGS+=	-Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
61.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
62# Slim down the image. This saves about 15% in size with clang 6 on x86
63# Our most constrained /boot/loader env is BIOS booting on x86, where
64# our text + data + BTX have to fit into 640k below the ISA hole.
65# Experience has shown that problems arise between ~520k to ~530k.
66CFLAGS.clang+=	-Oz
67CFLAGS.gcc+=	-Os
68.endif
69
70# GELI Support, with backward compat hooks (mostly)
71.if defined(LOADER_NO_GELI_SUPPORT)
72MK_LOADER_GELI=no
73.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
74.endif
75.if defined(LOADER_GELI_SUPPORT)
76MK_LOADER_GELI=yes
77.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
78.endif
79.if ${MK_LOADER_GELI} == "yes"
80CFLAGS+=	-DLOADER_GELI_SUPPORT
81CFLAGS+=	-I${SASRC}/geli
82.endif # MK_LOADER_GELI
83
84# These should be confined to loader.mk, but can't because uboot/lib
85# also uses it. It's part of loader, but isn't a loader so we can't
86# just include loader.mk
87.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
88CFLAGS+= -DLOADER_DISK_SUPPORT
89.endif
90
91# Machine specific flags for all builds here
92
93# All PowerPC builds are 32 bit. We have no 64-bit loaders on powerpc
94# or powerpc64.
95.if ${MACHINE_ARCH} == "powerpc64"
96CFLAGS+=	-m32 -mcpu=powerpc
97.endif
98
99# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
100# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
101# and activate it when DO32 is explicitly defined to be 1.
102.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
103CFLAGS+=	-m32
104# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
105LD_FLAGS+=	-m elf_i386_fbsd
106AFLAGS+=	--32
107.endif
108
109SSP_CFLAGS=
110
111# Add in the no float / no SIMD stuff and announce we're freestanding
112# aarch64 and riscv don't have -msoft-float, but all others do. riscv
113# currently has no /boot/loader, but may soon.
114CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
115.if ${MACHINE_CPUARCH} == "aarch64"
116CFLAGS+=	-mgeneral-regs-only -fPIC
117.elif ${MACHINE_CPUARCH} == "riscv"
118CFLAGS+=	-march=rv64imac -mabi=lp64
119.else
120CFLAGS+=	-msoft-float
121.endif
122
123# -msoft-float seems to be insufficient for powerpcspe
124.if ${MACHINE_ARCH} == "powerpcspe"
125CFLAGS+=	-mno-spe
126.endif
127
128.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
129CFLAGS+=	-march=i386
130CFLAGS.gcc+=	-mpreferred-stack-boundary=2
131.endif
132.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
133CFLAGS+=	-fPIC -mno-red-zone
134.endif
135
136.if ${MACHINE_CPUARCH} == "arm"
137# Do not generate movt/movw, because the relocation fixup for them does not
138# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
139# Also, the fpu is not available in a standalone environment.
140.if ${COMPILER_VERSION} < 30800
141CFLAGS.clang+=	-mllvm -arm-use-movt=0
142.else
143CFLAGS.clang+=	-mno-movt
144.endif
145CFLAGS.clang+=  -mfpu=none
146CFLAGS+=	-fPIC
147.endif
148
149# The boot loader build uses dd status=none, where possible, for reproducible
150# build output (since performance varies from run to run). Trouble is that
151# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
152# when this test succeeds rather than require dd to be a bootstrap tool.
153DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
154DD=dd ${DD_NOSTATUS}
155
156.if ${MACHINE_CPUARCH} == "mips"
157CFLAGS+=	-G0 -fno-pic -mno-abicalls
158.endif
159
160.if ${MK_LOADER_FORCE_LE} != "no"
161.if ${MACHINE_ARCH} == "powerpc64"
162CFLAGS+=	-mlittle-endian
163.endif
164.endif
165
166#
167# Have a sensible default
168#
169# XXX Do not change the ordering of this chain in this branch.  4th must remain
170# the default for the lifetime of stable/11.
171.if ${MK_FORTH} == "yes"
172LOADER_DEFAULT_INTERP?=4th
173.elif ${MK_LOADER_LUA} == "yes"
174LOADER_DEFAULT_INTERP?=lua
175.else
176LOADER_DEFAULT_INTERP?=simp
177.endif
178LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
179
180# Make sure we use the machine link we're about to create
181CFLAGS+=-I.
182
183all: ${PROG}
184
185.if !defined(NO_OBJ)
186_ILINKS=machine
187.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
188_ILINKS+=${MACHINE_CPUARCH}
189.endif
190.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
191_ILINKS+=x86
192.endif
193CLEANFILES+=${_ILINKS}
194
195beforedepend: ${_ILINKS}
196beforebuild: ${_ILINKS}
197
198# Ensure that the links exist without depending on it when it exists which
199# causes all the modules to be rebuilt when the directory pointed to changes.
200.for _link in ${_ILINKS}
201.if !exists(${.OBJDIR}/${_link})
202${OBJS}:       ${_link}
203.endif # _link exists
204.endfor
205
206.NOPATH: ${_ILINKS}
207
208${_ILINKS}:
209	@case ${.TARGET} in \
210	machine) \
211		if [ ${DO32:U0} -eq 0 ]; then \
212			path=${SYSDIR}/${MACHINE}/include ; \
213		else \
214			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
215		fi ;; \
216	*) \
217		path=${SYSDIR}/${.TARGET:T}/include ;; \
218	esac ; \
219	path=`(cd $$path && /bin/pwd)` ; \
220	${ECHO} ${.TARGET:T} "->" $$path ; \
221	ln -fhs $$path ${.TARGET:T}
222.endif # !NO_OBJ
223.endif # __BOOT_DEFS_MK__
224