150477Speter# $FreeBSD$
240269Srnordier
3211571Srpaulo.include <bsd.own.mk>
4211571Srpaulo
5125537SruFILES=		boot boot1 boot2
640326Srnordier
780751SjhbNM?=		nm
880751Sjhb
948919Srnordier# A value of 0x80 enables LBA support.
10134382SyarBOOT_BOOT1_FLAGS?=	0x80
1148919Srnordier
1242480SrnordierBOOT_COMCONSOLE_PORT?= 0x3f8
1342480SrnordierBOOT_COMCONSOLE_SPEED?= 9600
1440541SrnordierB2SIOFMT?=	0x3
1540541Srnordier
16104673SgreenREL1=	0x700
1740269SrnordierORG1=	0x7c00
18104683SjhbORG2=	0x2000
1940269Srnordier
20125537Sru# Decide level of UFS support.
21108000SimpBOOT2_UFS?=	UFS1_AND_UFS2
22125537Sru#BOOT2_UFS?=	UFS2_ONLY
23125537Sru#BOOT2_UFS?=	UFS1_ONLY
24104635Sphk
25125566SruCFLAGS=	-Os \
26132870Skan	-fomit-frame-pointer \
2796327Sjhb	-mrtd \
28220337Srdivacky	-mregparm=3 \
29221177Sjhb	-DUSE_XREAD \
30107879Sphk	-D${BOOT2_UFS} \
31134382Syar	-DFLAGS=${BOOT_BOOT1_FLAGS} \
32125932Sru	-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
33125932Sru	-DSIOFMT=${B2SIOFMT} \
34125932Sru	-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
3597860Sphk	-I${.CURDIR}/../../common \
3696306Sobrien	-I${.CURDIR}/../btx/lib -I. \
3740269Srnordier	-Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
3840269Srnordier	-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
39169732Skan	-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
40260497Sdim	-Winline \
41232263Sdim	${CLANG_OPT_SMALL}
4240269Srnordier
43260096SdimCFLAGS.gcc+=	-fno-guess-branch-probability \
44260096Sdim		-fno-unit-at-a-time \
45260096Sdim		-mno-align-long-strings \
46260497Sdim		--param max-inline-insns-single=100
47260096Sdim
48260291SdimLD_FLAGS=-static -N --gc-sections
4940269Srnordier
50125537Sru# Pick up ../Makefile.inc early.
51125537Sru.include <bsd.init.mk>
5240269Srnordier
53125537SruCLEANFILES=	boot
54125537Sru
55109886Sphkboot: boot1 boot2
56109886Sphk	cat boot1 boot2 > boot
57109886Sphk
58125537SruCLEANFILES+=	boot1 boot1.out boot1.o
59125537Sru
6040269Srnordierboot1: boot1.out
6140308Srnordier	objcopy -S -O binary boot1.out ${.TARGET}
6240269Srnordier
6340269Srnordierboot1.out: boot1.o
64260291Sdim	${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
6540269Srnordier
66125537SruCLEANFILES+=	boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
67125537Sru		boot2.s boot2.s.tmp boot2.h sio.o
6896424Speter
69125537Sruboot2: boot2.ld
70125537Sru	@set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
71125537Sru	    echo "$$x bytes available"; test $$x -ge 0
72125537Sru	dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
7380751Sjhb
74125537Sruboot2.ld: boot2.ldr boot2.bin ${BTXKERN}
75125537Sru	btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
76125537Sru	    -o ${.TARGET} -P 1 boot2.bin
7740269Srnordier
7840269Srnordierboot2.ldr:
79189500Smarcel	dd if=/dev/zero of=${.TARGET} bs=512 count=1
8040269Srnordier
8140269Srnordierboot2.bin: boot2.out
8240308Srnordier	objcopy -S -O binary boot2.out ${.TARGET}
8340269Srnordier
84125537Sruboot2.out: ${BTXCRT} boot2.o sio.o
85260291Sdim	${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
8640269Srnordier
87125537Sruboot2.o: boot2.s
88224131Sdim	${CC} ${ACFLAGS} -c boot2.s
8980751Sjhb
90125564SruSRCS=	boot2.c boot2.h
91125564Sru
92125537Sruboot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
93125537Sru	${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
94125537Sru	sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
95125537Sru	rm -f boot2.s.tmp
9640404Srnordier
97125537Sruboot2.h: boot1.out
98125537Sru	${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
99125537Sru	    { x = $$1 - ORG1; \
100125537Sru	    printf("#define XREADORG %#x\n", REL1 + x) }' \
101125537Sru	    ORG1=`printf "%d" ${ORG1}` \
102125537Sru	    REL1=`printf "%d" ${REL1}` > ${.TARGET}
10340326Srnordier
104211677Simp.if ${MACHINE_CPUARCH} == "amd64"
105125581Srubeforedepend boot2.s: machine
106125556SruCLEANFILES+=	machine
107116864Spetermachine:
108116864Speter	ln -sf ${.CURDIR}/../../../i386/include machine
109116864Speter.endif
110116864Speter
111125537Sru.include <bsd.prog.mk>
112232263Sdim
113232263Sdim# XXX: clang integrated-as doesn't grok .codeNN directives yet
114232263SdimCFLAGS.boot1.S=		${CLANG_NO_IAS}
115232263SdimCFLAGS+=		${CFLAGS.${.IMPSRC:T}}
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