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 1.12 2004/09/12 18:37:15 dillon Exp $
9 CLEANFILES= boot boot1 boot1.out boot1.o \
10 boot2.ldr boot2.bin boot2.ld boot2.out boot2.o boot2.h \
19 # A value of 0x80 enables LBA support.
22 BOOT_COMCONSOLE_PORT?= 0x3f8
23 BOOT_COMCONSOLE_SPEED?= 9600
26 .if exists(${.OBJDIR}/../btx)
27 BTX= ${.OBJDIR}/../btx
29 BTX= ${.CURDIR}/../btx
32 # These origins are taken from bootasm.h.
34 REL1 = `${.OBJDIR}/bootasmdef.nx BOOT1_ORIGIN`
35 REL1D = `${.OBJDIR}/bootasmdef.nx -d BOOT1_ORIGIN`
36 ORG1 = `${.OBJDIR}/bootasmdef.nx MEM_BIOS_LADDR`
37 ORG1D = `${.OBJDIR}/bootasmdef.nx -d MEM_BIOS_LADDR`
39 # WARNING! The ORG2 calculation is the origin of boot2.bin relative to
40 # the start of the BTX *USER* address space, not the start of physical
43 ORG2= `${.OBJDIR}/bootasmdef.nx BOOT2_VORIGIN`
45 # Decide Level of UFS support. UFS1_AND_UFS2 doesn't fit.
47 # BOOT2_UFS?= UFS2_ONLY
48 #BOOT2_UFS?= UFS1_AND_UFS2
52 # -fno-guess-branch-probability
53 # -mno-align-long-strings
54 CFLAGS= -elf -ffreestanding -Os -fno-builtin -fno-stack-protector \
55 -fomit-frame-pointer \
57 -I${.CURDIR}/../../common \
58 -I${.CURDIR}/../btx/lib -I. \
59 -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
60 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
61 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings
63 # -mrtd will produce bad code (missing stack pops) when combined with
64 # gcc-3.4's (default on) unit-at-a-time optimization. See the code
65 # generated for 'xputc' as an example.
67 # __USING_MRTD__ is used to conditionalize any assembly modules
70 .if ${CCVER} == "gcc2"
72 MRTDFLAGS=-D__USING_MRTD__
77 # Unfortunately, unit-at-a-time creates other issues as well, as yet
78 # not tracked down, in boot2, so we have to turn it off. Note that
79 # the problem has been narrowed down to the 'boot2' code. The /boot/loader
80 # doesn't seem to have a problem.
82 .if ${CCVER} != "gcc2"
83 CFLAGS+= -fno-unit-at-a-time
86 LDFLAGS=-nostdlib -static -N --gc-sections
91 cat boot1 boot2 > boot
94 objcopy -S -O binary boot1.out ${.TARGET}
96 boot1.out: boot1.o bootasmdef.nx
97 ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
100 ${CC} ${CFLAGS} -DFLAGS=${B1FLAGS} ${AFLAGS} \
101 ${.IMPSRC} -o ${.TARGET} -c
103 boot2.o: boot2.c ${.CURDIR}/../../common/ufsread.c
104 ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.IMPSRC}
105 sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
107 ${AS} ${AFLAGS} -o boot2.o boot2.s
109 boot2.h: boot1.out bootasmdef.nx
110 @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
111 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
113 printf("#define XREADORG %#x\n", REL1 + x) }' \
114 ORG1=${ORG1D} REL1=${REL1D} > boot2.h
116 boot2: boot2.ldr boot2.bin ${BTX}/btx/btx
117 btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2.ldr \
118 -o boot2.ld -P 1 boot2.bin
119 @ls -l boot2.ld | awk '{ x = 7680 - $$5; \
120 print x " bytes available"; if (x < 0) exit 1 }'
121 dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync 2>/dev/null
124 dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
127 objcopy -S -O binary boot2.out ${.TARGET}
129 boot2.out: boot2.o sio.o
130 ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
131 ${BTX}/lib/crt0.o ${.ALLSRC}
136 ${CC} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
137 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} ${MRTDFLAGS} \
138 ${AFLAGS} ${.IMPSRC} -o ${.TARGET} -c
141 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
142 boot ${DESTDIR}${BINDIR}/boot
143 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
144 boot1 ${DESTDIR}${BINDIR}/boot1
145 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
146 boot2 ${DESTDIR}${BINDIR}/boot2
148 .include <bsd.prog.mk>
150 .if defined(REALLY_AMD64)
153 beforedepend ${OBJS}: machine
156 ln -sf ${.CURDIR}/../../../i386/include machine
161 CLEANFILES+= bootasmdef.nx