2e0786e4ed62dc18bc7b40aa4b7dcadccde4bf35
[dragonfly.git] / sys / boot / pc32 / boot2 / Makefile
1 # $FreeBSD: src/sys/boot/i386/boot2/Makefile,v 1.47 2003/06/26 03:51:57 peter Exp $
2 # $DragonFly: src/sys/boot/pc32/boot2/Makefile,v 1.18 2008/09/13 11:45:45 corecode Exp $
3
4 PROG=           boot2
5 NOMAN=
6 STRIP=
7 BINDIR?=        /boot
8 BINMODE=        444
9 CLEANFILES=     boot boot1 boot1.out boot1.o \
10                 boot2.ldr boot2.bin boot2.ld boot2.out boot2.o boot2.h \
11                 boot2.s sio.o
12
13 NM?=            nm
14 NXCFLAGS=
15 NXLDFLAGS=
16
17 .PATH: ${.CURDIR}/..
18
19 # A value of 0x80 enables LBA support.
20 B1FLAGS=        0x80
21
22 BOOT_COMCONSOLE_PORT?= 0x3f8
23 BOOT_COMCONSOLE_SPEED?= 9600
24 B2SIOFMT?=      0x3
25
26 .if exists(${.OBJDIR}/../btx)
27 BTX=    ${.OBJDIR}/../btx
28 .else
29 BTX=    ${.CURDIR}/../btx
30 .endif
31
32 # These origins are taken from bootasm.h.
33 #
34 REL1 = `${.OBJDIR}/bootasmdef.nx BOOT1_ORIGIN`
35 REL1D = `${.OBJDIR}/bootasmdef.nx -d BOOT1_ORIGIN`
36 ORG1 = `${.OBJDIR}/bootasmdef.nx MEM_BIOS_LADDR`
37 ORG1D = `${.OBJDIR}/bootasmdef.nx -d MEM_BIOS_LADDR`
38
39 # WARNING!  The ORG2 calculation is the origin of boot2.bin relative to 
40 # the start of the BTX *USER* address space, not the start of physical 
41 # memory.
42 #
43 ORG2=   `${.OBJDIR}/bootasmdef.nx BOOT2_VORIGIN`
44
45 # Decide Level of UFS support.  UFS1_AND_UFS2 doesn't fit.
46
47 # BOOT2_UFS?=   UFS2_ONLY
48 #BOOT2_UFS?=    UFS1_AND_UFS2
49 BOOT2_UFS?=     UFS1_ONLY
50 #BOOT2_UFS?=    HAMMERFS
51
52 # gcc3.x
53 #       -fno-guess-branch-probability
54 #       -mno-align-long-strings
55 CFLAGS= -elf -ffreestanding -Os -fno-builtin \
56         -fomit-frame-pointer \
57         -std=c99 \
58         -DBOOT2 \
59         -D${BOOT2_UFS} \
60         -I${.CURDIR}/../../common \
61         -I${.CURDIR}/../../../../lib/libstand \
62         -I${.CURDIR}/../btx/lib -I. \
63         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
64         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
65         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
66         -D__BOOT2_HACK
67
68 # Unfortunately, unit-at-a-time creates issues as yet
69 # not tracked down, in boot2, so we have to turn it off.  Note that
70 # the problem has been narrowed down to the 'boot2' code.  The /boot/loader
71 # doesn't seem to have a problem.
72 #
73 CFLAGS+= -fno-unit-at-a-time
74
75 # Disable propolice on gcc that supports it
76 .if ${CCVER} == "gcc34"
77 CFLAGS+= -fno-stack-protector
78 .endif
79
80 NSECT?= 16
81 CFLAGS+= -DNSECT=${NSECT}
82
83 LDFLAGS=-nostdlib -static -N --gc-sections
84
85 all: boot1 boot2 boot
86
87 boot: boot1 boot2
88         cat boot1 boot2 > boot
89
90 boot1: boot1.out
91         objcopy -S -O binary boot1.out ${.TARGET}
92
93 boot1.out: boot1.o bootasmdef.nx
94         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
95
96 boot1.o: boot1.S
97         ${CC} ${CFLAGS} -DFLAGS=${B1FLAGS} \
98                 ${.IMPSRC} -o ${.TARGET} -c
99
100 boot2.o: boot2.c ${.CURDIR}/../../common/ufsread.c ${.CURDIR}/../../../../lib/libstand/hammerread.c
101         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.IMPSRC}
102         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
103         rm -f boot2.s.tmp
104         ${AS} ${AFLAGS} -o boot2.o boot2.s
105
106 boot2.h: boot1.out bootasmdef.nx
107         @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
108         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
109                 { x = $$1 - ORG1; \
110                 printf("#define XREADORG %#x\n", REL1 + x) }' \
111                 ORG1=${ORG1D} REL1=${REL1D} > boot2.h
112
113 boot2: boot2.ldr boot2.bin ${BTX}/btx/btx
114         btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2.ldr \
115                 -o boot2.ld -P 1 boot2.bin
116         stat boot2.ld | awk '{ x = (${NSECT} - 1) * 512 - $$8; \
117                 print x " bytes available"; if (x < 0) exit 1 }'
118         dd if=boot2.ld of=${.TARGET} obs=$$(( (${NSECT} - 1) * 512)) conv=osync 2>/dev/null
119
120 boot2.ldr:
121         dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
122
123 boot2.bin: boot2.out
124         objcopy -S -O binary boot2.out ${.TARGET}
125
126 boot2.out: boot2.o sio.o
127         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
128                 ${BTX}/lib/crt0.o ${.ALLSRC}
129
130 boot2.o: boot2.h
131
132 sio.o: sio.S
133         ${CC} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
134                 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
135                 ${.IMPSRC} -o ${.TARGET} -c
136
137 install:
138         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
139                 boot ${DESTDIR}${BINDIR}/boot
140         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
141                 boot1 ${DESTDIR}${BINDIR}/boot1
142         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
143                 boot2 ${DESTDIR}${BINDIR}/boot2
144
145 .include <bsd.prog.mk>
146
147 .if defined(REALLY_AMD64)
148 boot2.o: machine
149
150 beforedepend ${OBJS}: machine
151
152 machine:
153         ${LN} -sf ${.CURDIR}/../../../i386/include machine
154
155 CLEANFILES+=    machine
156 .endif
157
158 CLEANFILES+=    bootasmdef.nx
159