FreeBSD source tree
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

257 lines
7.5 KiB

# $FreeBSD$
.if !defined(__BOOT_DEFS_MK__)
__BOOT_DEFS_MK__=${MFILE}
# We need to define all the MK_ options before including src.opts.mk
# because it includes bsd.own.mk which needs the right MK_ values,
# espeically MK_CTF.
MK_CTF= no
MK_SSP= no
MK_PROFILE= no
MK_PIE= no
MAN=
.if !defined(PIC)
NO_PIC=
INTERNALLIB=
.endif
# Should be NO_CPU_FLAGS, but bsd.cpu.mk is included too early in bsd.init.mk
# via the early include of bsd.opts.mk. Moving Makefile.inc include earlier in
# that file causes weirdness, so this is the next best thing. We need to do this
# because the loader needs very specific flags to work right, and things like
# CPUTYPE?=native prevent that, and introduce an endless game of whack-a-mole
# to disable more and more features. Boot loader performance is never improved
# enough to make that hassle worth chasing.
_CPUCFLAGS=
.if ${LDFLAGS:M-nostdlib}
# Sanitizers won't work unless we link against libc (e.g. in userboot/test).
MK_ASAN:= no
MK_UBSAN:= no
.endif
.include <src.opts.mk>
.include <bsd.linker.mk>
WARNS?= 1
BOOTSRC= ${SRCTOP}/stand
EFISRC= ${BOOTSRC}/efi
EFIINC= ${EFISRC}/include
EFIINCMD= ${EFIINC}/${MACHINE}
FDTSRC= ${BOOTSRC}/fdt
FICLSRC= ${BOOTSRC}/ficl
LDRSRC= ${BOOTSRC}/common
LIBLUASRC= ${BOOTSRC}/liblua
LIBOFWSRC= ${BOOTSRC}/libofw
LUASRC= ${SRCTOP}/contrib/lua/src
SASRC= ${BOOTSRC}/libsa
SYSDIR= ${SRCTOP}/sys
UBOOTSRC= ${BOOTSRC}/uboot
ZFSSRC= ${SASRC}/zfs
OZFS= ${SRCTOP}/sys/contrib/openzfs
ZFSOSSRC= ${OZFS}/module/os/freebsd/
ZFSOSINC= ${OZFS}/include/os/freebsd
LIBCSRC= ${SRCTOP}/lib/libc
BOOTOBJ= ${OBJTOP}/stand
# BINDIR is where we install
BINDIR?= /boot
# LUAPATH is where we search for and install lua scripts.
LUAPATH?= /boot/lua
FLUASRC?= ${SRCTOP}/libexec/flua
LIBSA= ${BOOTOBJ}/libsa/libsa.a
.if ${MACHINE} == "i386"
LIBSA32= ${LIBSA}
.else
LIBSA32= ${BOOTOBJ}/libsa32/libsa32.a
.endif
# Standard options:
CFLAGS+= -nostdinc
# Allow CFLAGS_EARLY.file/target so that code that needs specific stack
# of include paths can set them up before our include paths. Normally
# the only thing that should be there are -I directives, and as few of
# those as possible.
CFLAGS+= ${CFLAGS_EARLY} ${CFLAGS_EARLY.${.IMPSRC:T}} ${CFLAGS_EARLY.${.TARGET:T}}
.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
CFLAGS+= -I${BOOTOBJ}/libsa32
.else
CFLAGS+= -I${BOOTOBJ}/libsa
.endif
CFLAGS+= -I${SASRC} -D_STANDALONE
CFLAGS+= -I${SYSDIR}
# Spike the floating point interfaces
CFLAGS+= -Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
# Slim down the image. This saves about 15% in size with clang 6 on x86
# Our most constrained /boot/loader env is BIOS booting on x86, where
# our text + data + BTX have to fit into 640k below the ISA hole.
# Experience has shown that problems arise between ~520k to ~530k.
CFLAGS.clang+= -Oz
CFLAGS.gcc+= -Os
CFLAGS+= -ffunction-sections -fdata-sections
.endif
# GELI Support, with backward compat hooks (mostly)
.if defined(LOADER_NO_GELI_SUPPORT)
MK_LOADER_GELI=no
.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
.endif
.if defined(LOADER_GELI_SUPPORT)
MK_LOADER_GELI=yes
.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
.endif
.if ${MK_LOADER_GELI} == "yes"
CFLAGS+= -DLOADER_GELI_SUPPORT
CFLAGS+= -I${SASRC}/geli
.endif # MK_LOADER_GELI
# These should be confined to loader.mk, but can't because uboot/lib
# also uses it. It's part of loader, but isn't a loader so we can't
# just include loader.mk
.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
CFLAGS+= -DLOADER_DISK_SUPPORT
.endif
# Machine specific flags for all builds here
# Ensure PowerPC64 and PowerPC64LE boot loaders are compiled as 32 bit
# and in big endian.
.if ${MACHINE_ARCH:Mpowerpc64*} != ""
CFLAGS+= -m32 -mcpu=powerpc -mbig-endian
.endif
# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
# and activate it when DO32 is explicitly defined to be 1.
.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
CFLAGS+= -m32
# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
LD_FLAGS+= -m elf_i386_fbsd
AFLAGS+= --32
.endif
# Add in the no float / no SIMD stuff and announce we're freestanding
# aarch64 and riscv don't have -msoft-float, but all others do.
CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD}
.if ${MACHINE_CPUARCH} == "aarch64"
CFLAGS+= -mgeneral-regs-only -ffixed-x18 -fPIC
.elif ${MACHINE_CPUARCH} == "riscv"
CFLAGS+= -march=rv64imac -mabi=lp64 -fPIC
CFLAGS.clang+= -mcmodel=medium
CFLAGS.gcc+= -mcmodel=medany
.else
CFLAGS+= -msoft-float
.endif
# -msoft-float seems to be insufficient for powerpcspe
.if ${MACHINE_ARCH} == "powerpcspe"
CFLAGS+= -mno-spe
.endif
.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
CFLAGS+= -march=i386
CFLAGS.gcc+= -mpreferred-stack-boundary=2
.endif
.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
CFLAGS+= -fPIC -mno-red-zone
.endif
.if ${MACHINE_CPUARCH} == "arm"
# Do not generate movt/movw, because the relocation fixup for them does not
# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
# Also, the fpu is not available in a standalone environment.
CFLAGS.clang+= -mno-movt
CFLAGS.clang+= -mfpu=none
CFLAGS+= -fPIC
.endif
# Some RISC-V linkers have support for relaxations, while some (lld) do not
# yet. If this is the case we inhibit the compiler from emitting relaxations.
.if ${LINKER_FEATURES:Mriscv-relaxations} == ""
CFLAGS+= -mno-relax
.endif
# The boot loader build uses dd status=none, where possible, for reproducible
# build output (since performance varies from run to run). Trouble is that
# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
# when this test succeeds rather than require dd to be a bootstrap tool.
DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
DD=dd ${DD_NOSTATUS}
.if ${MACHINE_CPUARCH} == "mips"
CFLAGS+= -G0 -fno-pic -mno-abicalls
.endif
#
# Have a sensible default
#
.if ${MK_LOADER_LUA} == "yes"
LOADER_DEFAULT_INTERP?=lua
.elif ${MK_FORTH} == "yes"
LOADER_DEFAULT_INTERP?=4th
.else
LOADER_DEFAULT_INTERP?=simp
.endif
LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
# Make sure we use the machine link we're about to create
CFLAGS+=-I.
all: ${PROG}
CLEANFILES+= teken_state.h
teken.c: teken_state.h
teken_state.h: ${SYSDIR}/teken/sequences
awk -f ${SYSDIR}/teken/gensequences \
${SYSDIR}/teken/sequences > teken_state.h
.if !defined(NO_OBJ)
_ILINKS=include/machine
.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
_ILINKS+=include/${MACHINE_CPUARCH}
.endif
.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
_ILINKS+=include/x86
.endif
CFLAGS+= -Iinclude
CLEANDIRS+= include
beforedepend: ${_ILINKS}
beforebuild: ${_ILINKS}
# Ensure that the links exist without depending on it when it exists which
# causes all the modules to be rebuilt when the directory pointed to changes.
.for _link in ${_ILINKS}
.if !exists(${.OBJDIR}/${_link})
${OBJS}: ${_link}
.endif # _link exists
.endfor
.NOPATH: ${_ILINKS}
${_ILINKS}: .NOMETA
@case ${.TARGET:T} in \
machine) \
if [ ${DO32:U0} -eq 0 ]; then \
path=${SYSDIR}/${MACHINE}/include ; \
else \
path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
fi ;; \
*) \
path=${SYSDIR}/${.TARGET:T}/include ;; \
esac ; \
case ${.TARGET} in \
*/*) mkdir -p ${.TARGET:H};; \
esac ; \
path=`(cd $$path && /bin/pwd)` ; \
${ECHO} ${.TARGET} "->" $$path ; \
ln -fns $$path ${.TARGET}
.endif # !NO_OBJ
.endif # __BOOT_DEFS_MK__