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 1.16 2005/09/25 12:43:58 asmodai 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 \
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 \
64 # -mrtd will produce bad code (missing stack pops) when combined with
65 # gcc-3.4's (default on) unit-at-a-time optimization. See the code
66 # generated for 'xputc' as an example.
68 # __USING_MRTD__ is used to conditionalize any assembly modules
71 .if ${CCVER} == "gcc2"
73 MRTDFLAGS=-D__USING_MRTD__
78 # Unfortunately, unit-at-a-time creates other issues as well, as yet
79 # not tracked down, in boot2, so we have to turn it off. Note that
80 # the problem has been narrowed down to the 'boot2' code. The /boot/loader
81 # doesn't seem to have a problem.
83 .if ${CCVER} != "gcc2"
84 CFLAGS+= -fno-unit-at-a-time
87 # Disable propolice on gcc that support it
88 .if ${CCVER} == "gcc2" || ${CCVER} == "gcc34"
89 CFLAGS+= -fno-stack-protector
92 LDFLAGS=-nostdlib -static -N --gc-sections
97 cat boot1 boot2 > boot
100 objcopy -S -O binary boot1.out ${.TARGET}
102 boot1.out: boot1.o bootasmdef.nx
103 ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
106 ${CC} ${CFLAGS} -DFLAGS=${B1FLAGS} ${AFLAGS} \
107 ${.IMPSRC} -o ${.TARGET} -c
109 boot2.o: boot2.c ${.CURDIR}/../../common/ufsread.c
110 ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.IMPSRC}
111 sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
113 ${AS} ${AFLAGS} -o boot2.o boot2.s
115 boot2.h: boot1.out bootasmdef.nx
116 @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
117 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
119 printf("#define XREADORG %#x\n", REL1 + x) }' \
120 ORG1=${ORG1D} REL1=${REL1D} > boot2.h
122 boot2: boot2.ldr boot2.bin ${BTX}/btx/btx
123 btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2.ldr \
124 -o boot2.ld -P 1 boot2.bin
125 @stat boot2.ld | awk '{ x = 7680 - $$8; \
126 print x " bytes available"; if (x < 0) exit 1 }'
127 dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync 2>/dev/null
130 dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
133 objcopy -S -O binary boot2.out ${.TARGET}
135 boot2.out: boot2.o sio.o
136 ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
137 ${BTX}/lib/crt0.o ${.ALLSRC}
142 ${CC} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
143 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} ${MRTDFLAGS} \
144 ${AFLAGS} ${.IMPSRC} -o ${.TARGET} -c
147 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
148 boot ${DESTDIR}${BINDIR}/boot
149 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
150 boot1 ${DESTDIR}${BINDIR}/boot1
151 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
152 boot2 ${DESTDIR}${BINDIR}/boot2
154 .include <bsd.prog.mk>
156 .if defined(REALLY_AMD64)
159 beforedepend ${OBJS}: machine
162 ${LN} -sf ${.CURDIR}/../../../i386/include machine
167 CLEANFILES+= bootasmdef.nx