1 files changed, 99 insertions, 0 deletions
diff --git a/stand/i386/boot2/Makefile b/stand/i386/boot2/Makefile
new file mode 100644
index 000000000000..c3146b3e9063
--- /dev/null
+++ b/stand/i386/boot2/Makefile
@@ -0,0 +1,99 @@
+# $FreeBSD$
+
+.include <bsd.init.mk>
+
+FILES=		boot boot1 boot2
+
+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
+
+# Decide level of UFS support.
+BOOT2_UFS?=	UFS1_AND_UFS2
+#BOOT2_UFS?=	UFS2_ONLY
+#BOOT2_UFS?=	UFS1_ONLY
+
+CFLAGS+=-fomit-frame-pointer \
+	-mrtd \
+	-mregparm=3 \
+	-D${BOOT2_UFS} \
+	-DFLAGS=${BOOT_BOOT1_FLAGS} \
+	-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
+	-DSIOFMT=${B2SIOFMT} \
+	-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
+	-I${LDRSRC} \
+	-I${BTXLIB} \
+	-Wall -Waggregate-return -Wbad-function-cast -Wno-cast-align \
+	-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
+	-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
+	-Winline
+
+CFLAGS.gcc+=	-Os \
+		-fno-asynchronous-unwind-tables \
+		--param max-inline-insns-single=100
+.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201
+CFLAGS.gcc+=   -mno-align-long-strings
+.endif
+
+CFLAGS.clang+=	-Oz ${CLANG_OPT_SMALL}
+
+LD_FLAGS+=${LD_FLAGS_BIN}
+
+CLEANFILES+=	boot
+
+boot: boot1 boot2
+	cat boot1 boot2 > boot
+
+CLEANFILES+=	boot1 boot1.out boot1.o
+
+boot1: boot1.out
+	${OBJCOPY} -S -O binary boot1.out ${.TARGET}
+
+boot1.out: boot1.o
+	${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
+
+CLEANFILES+=	boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
+		boot2.h sio.o
+
+BOOT2SIZE=	7680
+
+boot2: boot2.ld
+	@set -- `ls -l ${.ALLSRC}`; x=$$((${BOOT2SIZE}-$$5)); \
+	    echo "$$x bytes available"; test $$x -ge 0
+	${DD} if=${.ALLSRC} of=${.TARGET} obs=${BOOT2SIZE} conv=osync
+
+boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
+	btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
+	    -o ${.TARGET} -P 1 boot2.bin
+
+boot2.ldr:
+	${DD} if=/dev/zero of=${.TARGET} bs=512 count=1
+
+boot2.bin: boot2.out
+	${OBJCOPY} -S -O binary boot2.out ${.TARGET}
+
+boot2.out: ${BTXCRT} boot2.o sio.o
+	${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
+
+SRCS=	boot2.c boot2.h
+
+boot2.h: boot1.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}
+
+.include <bsd.prog.mk>
+
+# XXX: clang integrated-as doesn't grok .codeNN directives yet
+CFLAGS.boot1.S=		${CLANG_NO_IAS}