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