Makefile revision 279796 
1# $FreeBSD: stable/10/sys/boot/i386/boot2/Makefile 279796 2015-03-08 22:50:45Z dim $
2
3.include <bsd.own.mk>
4
5FILES=		boot boot1 boot2
6
7NM?=		nm
8
9# A value of 0x80 enables LBA support.
10BOOT_BOOT1_FLAGS?=	0x80
11
12BOOT_COMCONSOLE_PORT?= 0x3f8
13BOOT_COMCONSOLE_SPEED?= 9600
14B2SIOFMT?=	0x3
15
16REL1=	0x700
17ORG1=	0x7c00
18ORG2=	0x2000
19
20# Decide level of UFS support.
21BOOT2_UFS?=	UFS1_AND_UFS2
22#BOOT2_UFS?=	UFS2_ONLY
23#BOOT2_UFS?=	UFS1_ONLY
24
25CFLAGS=	-Os \
26	-fomit-frame-pointer \
27	-mrtd \
28	-mregparm=3 \
29	-DUSE_XREAD \
30	-D${BOOT2_UFS} \
31	-DFLAGS=${BOOT_BOOT1_FLAGS} \
32	-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
33	-DSIOFMT=${B2SIOFMT} \
34	-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
35	-I${.CURDIR}/../../common \
36	-I${.CURDIR}/../btx/lib -I. \
37	-Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
38	-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
39	-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
40	-Winline \
41	${CLANG_OPT_SMALL}
42
43CFLAGS.gcc+=	-fno-guess-branch-probability \
44		-fno-unit-at-a-time \
45		--param max-inline-insns-single=100
46.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201
47CFLAGS.gcc+=   -mno-align-long-strings
48.endif
49
50LD_FLAGS=-static -N --gc-sections
51
52# Pick up ../Makefile.inc early.
53.include <bsd.init.mk>
54
55CLEANFILES=	boot
56
57boot: boot1 boot2
58	cat boot1 boot2 > boot
59
60CLEANFILES+=	boot1 boot1.out boot1.o
61
62boot1: boot1.out
63	objcopy -S -O binary boot1.out ${.TARGET}
64
65boot1.out: boot1.o
66	${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
67
68CLEANFILES+=	boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
69		boot2.s boot2.s.tmp boot2.h sio.o
70
71boot2: boot2.ld
72	@set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
73	    echo "$$x bytes available"; test $$x -ge 0
74	dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
75
76boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
77	btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
78	    -o ${.TARGET} -P 1 boot2.bin
79
80boot2.ldr:
81	dd if=/dev/zero of=${.TARGET} bs=512 count=1
82
83boot2.bin: boot2.out
84	objcopy -S -O binary boot2.out ${.TARGET}
85
86boot2.out: ${BTXCRT} boot2.o sio.o
87	${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
88
89boot2.o: boot2.s
90	${CC} ${ACFLAGS} -c boot2.s
91
92SRCS=	boot2.c boot2.h
93
94boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
95	${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
96	sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
97	rm -f boot2.s.tmp
98
99boot2.h: boot1.out
100	${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
101	    { x = $$1 - ORG1; \
102	    printf("#define XREADORG %#x\n", REL1 + x) }' \
103	    ORG1=`printf "%d" ${ORG1}` \
104	    REL1=`printf "%d" ${REL1}` > ${.TARGET}
105
106.if ${MACHINE_CPUARCH} == "amd64"
107beforedepend boot2.s: machine
108CLEANFILES+=	machine
109machine:
110	ln -sf ${.CURDIR}/../../../i386/include machine
111.endif
112
113.include <bsd.prog.mk>
114
115# XXX: clang integrated-as doesn't grok .codeNN directives yet
116CFLAGS.boot1.S=		${CLANG_NO_IAS}
117CFLAGS+=		${CFLAGS.${.IMPSRC:T}}
118