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[FreeBSD/releng/8.1.git] / sys / boot / i386 / boot2 / Makefile
1 # $FreeBSD$
2
3 FILES=          boot boot1 boot2
4
5 NM?=            nm
6
7 # A value of 0x80 enables LBA support.
8 BOOT_BOOT1_FLAGS?=      0x80
9
10 BOOT_COMCONSOLE_PORT?= 0x3f8
11 BOOT_COMCONSOLE_SPEED?= 9600
12 B2SIOFMT?=      0x3
13
14 REL1=   0x700
15 ORG1=   0x7c00
16 ORG2=   0x2000
17
18 # Decide level of UFS support.
19 BOOT2_UFS?=     UFS1_AND_UFS2
20 #BOOT2_UFS?=    UFS2_ONLY
21 #BOOT2_UFS?=    UFS1_ONLY
22
23 CFLAGS= -Os \
24         -fno-guess-branch-probability \
25         -fomit-frame-pointer \
26         -fno-unit-at-a-time \
27         -mno-align-long-strings \
28         -mrtd \
29         -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 \
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 --param max-inline-insns-single=100
41
42 LDFLAGS=-static -N --gc-sections
43
44 # Pick up ../Makefile.inc early.
45 .include <bsd.init.mk>
46
47 CLEANFILES=     boot
48
49 boot: boot1 boot2
50         cat boot1 boot2 > boot
51
52 CLEANFILES+=    boot1 boot1.out boot1.o
53
54 boot1: boot1.out
55         objcopy -S -O binary boot1.out ${.TARGET}
56
57 boot1.out: boot1.o
58         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
59
60 CLEANFILES+=    boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
61                 boot2.s boot2.s.tmp boot2.h sio.o
62
63 boot2: boot2.ld
64         @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
65             echo "$$x bytes available"; test $$x -ge 0
66         dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
67
68 boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
69         btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
70             -o ${.TARGET} -P 1 boot2.bin
71
72 boot2.ldr:
73         dd if=/dev/zero of=${.TARGET} bs=512 count=1
74
75 boot2.bin: boot2.out
76         objcopy -S -O binary boot2.out ${.TARGET}
77
78 boot2.out: ${BTXCRT} boot2.o sio.o
79         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
80
81 boot2.o: boot2.s
82
83 SRCS=   boot2.c boot2.h
84
85 boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
86         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
87         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
88         rm -f boot2.s.tmp
89
90 boot2.h: boot1.out
91         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
92             { x = $$1 - ORG1; \
93             printf("#define XREADORG %#x\n", REL1 + x) }' \
94             ORG1=`printf "%d" ${ORG1}` \
95             REL1=`printf "%d" ${REL1}` > ${.TARGET}
96
97 .if ${MACHINE_ARCH} == "amd64"
98 beforedepend boot2.s: machine
99 CLEANFILES+=    machine
100 machine:
101         ln -sf ${.CURDIR}/../../../i386/include machine
102 .endif
103
104 .include <bsd.prog.mk>