1 files changed, 108 insertions, 0 deletions
diff --git a/sys/boot/i386/zfsboot/Makefile b/sys/boot/i386/zfsboot/Makefile
new file mode 100644
index 000000000000..41f1672c82ef
--- /dev/null
+++ b/sys/boot/i386/zfsboot/Makefile
@@ -0,0 +1,108 @@
+# $FreeBSD$
+
+.PATH:		${.CURDIR}/../boot2
+
+FILES=		zfsboot
+
+NM?=		nm
+
+# A value of 0x80 enables LBA support.
+BOOT_BOOT1_FLAGS?=	0x80
+
+BOOT_COMCONSOLE_PORT?= 0x3f8
+BOOT_COMCONSOLE_SPEED?= 9600
+B2SIOFMT?=	0x3
+
+REL1=	0x700
+ORG1=	0x7c00
+ORG2=	0x2000
+
+CFLAGS=	-Os -g \
+	-fno-guess-branch-probability \
+	-fomit-frame-pointer \
+	-fno-unit-at-a-time \
+	-mno-align-long-strings \
+	-mrtd \
+	-mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 \
+	-DBOOT2 \
+	-DFLAGS=${BOOT_BOOT1_FLAGS} \
+	-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
+	-DSIOFMT=${B2SIOFMT} \
+	-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
+	-I${.CURDIR}/../../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 zfsboot.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
+	${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
+
+zfsboot.o: zfsboot.s
+
+SRCS=	zfsboot.c zfsboot.h
+
+zfsboot.s: zfsboot.c zfsboot.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
+
+zfsboot.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_ARCH} == "amd64"
+beforedepend zfsboot.s: machine
+CLEANFILES+=	machine
+machine:
+	ln -sf ${.CURDIR}/../../../i386/include machine
+.endif
+
+.include <bsd.prog.mk>