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# $FreeBSD$
.PATH: ${.CURDIR}/../boot2 ${.CURDIR}/../common ${.CURDIR}/../../common
FILES= zfsboot
NM?= nm
# A value of 0x80 enables LBA support.
BOOT_BOOT1_FLAGS?= 0x80
BOOT_COMCONSOLE_PORT?= 0x3f8
BOOT_COMCONSOLE_SPEED?= 9600
B2SIOFMT?= 0x3
REL1= 0x700
ORG1= 0x7c00
ORG2= 0x2000
CFLAGS= -DBOOTPROG=\"zfsboot\" \
-Os -g \
-fno-guess-branch-probability \
-fomit-frame-pointer \
-fno-unit-at-a-time \
-mno-align-long-strings \
-mrtd \
-mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 \
-DBOOT2 \
-DFLAGS=${BOOT_BOOT1_FLAGS} \
-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
-DSIOFMT=${B2SIOFMT} \
-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
-I${.CURDIR}/../../common \
-I${.CURDIR}/../common \
-I${.CURDIR}/../../zfs \
-I${.CURDIR}/../../../cddl/boot/zfs \
-I${.CURDIR}/../btx/lib -I. \
-I${.CURDIR}/../boot2 \
-Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
-Winline --param max-inline-insns-single=100
LDFLAGS=-static -N --gc-sections
# Pick up ../Makefile.inc early.
.include <bsd.init.mk>
CLEANFILES= zfsboot
zfsboot: zfsboot1 zfsboot2
cat zfsboot1 zfsboot2 > zfsboot
CLEANFILES+= zfsboot1 zfsldr.out zfsldr.o
zfsboot1: zfsldr.out
objcopy -S -O binary zfsldr.out ${.TARGET}
zfsldr.out: zfsldr.o
${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} zfsldr.o
CLEANFILES+= zfsboot2 zfsboot.ld zfsboot.ldr zfsboot.bin zfsboot.out \
zfsboot.o zfsboot.s zfsboot.s.tmp xreadorg.h sio.o
# We currently allow 32768 bytes for zfsboot - in practice it could be
# any size up to 3.5Mb but keeping it fixed size simplifies zfsldr.
#
BOOT2SIZE= 32768
zfsboot2: zfsboot.ld
@set -- `ls -l zfsboot.ld`; x=$$((${BOOT2SIZE}-$$5)); \
echo "$$x bytes available"; test $$x -ge 0
dd if=zfsboot.ld of=${.TARGET} obs=${BOOT2SIZE} conv=osync
zfsboot.ld: zfsboot.ldr zfsboot.bin ${BTXKERN}
btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l zfsboot.ldr \
-o ${.TARGET} -P 1 zfsboot.bin
zfsboot.ldr:
cp /dev/null ${.TARGET}
zfsboot.bin: zfsboot.out
objcopy -S -O binary zfsboot.out ${.TARGET}
zfsboot.out: ${BTXCRT} zfsboot.o sio.o drv.o cons.o util.o
${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC} ${LIBSTAND}
zfsboot.o: zfsboot.s
SRCS= zfsboot.c xreadorg.h
zfsboot.s: zfsboot.c xreadorg.h ${.CURDIR}/../../zfs/zfsimpl.c
${CC} ${CFLAGS} -S -o zfsboot.s.tmp ${.CURDIR}/zfsboot.c
sed -e '/align/d' -e '/nop/d' < zfsboot.s.tmp > zfsboot.s
rm -f zfsboot.s.tmp
xreadorg.h: zfsldr.out
${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
{ x = $$1 - ORG1; \
printf("#define XREADORG %#x\n", REL1 + x) }' \
ORG1=`printf "%d" ${ORG1}` \
REL1=`printf "%d" ${REL1}` > ${.TARGET}
.if ${MACHINE_CPUARCH} == "amd64"
beforedepend zfsboot.s: machine
CLEANFILES+= machine
machine:
ln -sf ${.CURDIR}/../../../i386/include machine
.endif
.include <bsd.prog.mk>
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