1 # $FreeBSD: src/sys/boot/i386/boot2/Makefile,v 1.47 2003/06/26 03:51:57 peter Exp $
15 .PATH: ${.CURDIR}/../../common
16 .PATH: ${.CURDIR}/../../../../lib/libstand
18 # A value of 0x80 enables LBA support.
21 BOOT_COMCONSOLE_PORT?= 0x3f8
22 BOOT_COMCONSOLE_SPEED?= 9600
25 .if exists(${.OBJDIR}/../btx)
26 BTX= ${.OBJDIR}/../btx
28 BTX= ${.CURDIR}/../btx
31 # These origins are taken from bootasm.h.
33 REL1 = `${.OBJDIR}/bootasmdef.nx BOOT1_ORIGIN`
34 REL1D = `${.OBJDIR}/bootasmdef.nx -d BOOT1_ORIGIN`
35 ORG1 = `${.OBJDIR}/bootasmdef.nx MEM_BIOS_LADDR`
36 ORG1D = `${.OBJDIR}/bootasmdef.nx -d MEM_BIOS_LADDR`
38 # WARNING! The ORG2 calculation is the origin of boot2.bin relative to
39 # the start of the BTX *USER* address space, not the start of physical
42 ORG2= `${.OBJDIR}/bootasmdef.nx BOOT2_VORIGIN`
45 -fno-guess-branch-probability \
46 -fomit-frame-pointer \
48 -fno-asynchronous-unwind-tables \
50 -I${.CURDIR}/../../common \
51 -I${.CURDIR}/../../../../lib/libstand \
52 -I${.CURDIR}/../btx/lib -I. \
53 -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
54 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
55 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings
59 # Tell gcc that it shouldn't do fancy optimizations for newer processors.
60 # Otherwise it winds up creating larger code and we won't be able to fit boot2.
63 # Unfortunately, unit-at-a-time creates issues as yet
64 # not tracked down, in boot2, so we have to turn it off. Note that
65 # the problem has been narrowed down to the 'boot2' code. The /boot/loader
66 # doesn't seem to have a problem.
68 CFLAGS+= -fno-unit-at-a-time
70 # boot2 area in 32 bit disklabel is 16 sectors (8K)
72 # boot2 area in 64 bit disklabel is 64 sectors (32K).
73 # However, the boot1 btx loader puts boot2 at a physical address
74 # of MEM_BTX_USR+BOOT2_VORIGIN which is typically 0xC000, so we
75 # cannot make boot2 any larger then 16KB or we overflow the segment.
79 LDFLAGS= -nostdlib -static -N --gc-sections
80 LINKSCRIPT= --script ${.CURDIR}/boot2.ldscript
84 boot: boot1_32 boot2_32
89 _ADDCFLAGS$s:= -DNSECT=${NSECT$s}
92 _ADDCFLAGS$s+= -DDISKLABEL64
93 _ADDCFLAGS$s+= -DHAMMERFS -DUFS
94 _ADDOBJS$s+= hammerread$s.o ufsread$s.o
96 _ADDCFLAGS$s+= -DUFS -DUFS1_ONLY
97 _ADDOBJS$s+= ufsread$s.o
103 objcopy -S -O binary boot1$s.out ${.TARGET}
105 boot1$s.out: boot1$s.o bootasmdef.nx
106 ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} ${.ALLSRC:M*.o}
109 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -DFLAGS=${B1FLAGS} \
110 ${.ALLSRC} -o ${.TARGET} -c
112 boot2$s.s: boot2.c boot2$s.h ${.CURDIR}/../../common/ufsread.c ${.CURDIR}/../../../../lib/libstand/hammerread.c
113 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -S -o boot2$s.s.tmp ${.CURDIR}/boot2.c
114 sed -e '/align/d' -e '/nop/d' < ${.TARGET}.tmp > ${.TARGET}
118 ${AS} ${AFLAGS} -o ${.TARGET} boot2$s.s
120 boot2$s.h: boot1$s.out bootasmdef.nx
121 @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
122 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
124 printf("#define XREADORG %#x\n", REL1 + x) }' \
125 ORG1=${ORG1D} REL1=${REL1D} > boot2$s.h
127 boot2$s: boot2$s.ldr boot2$s.bin ${BTX}/btx/btx
128 btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2$s.ldr \
129 -o boot2$s.ld -P 1 boot2$s.bin
130 stat boot2$s.ld | awk '{ x = (${NSECT$s} - 1) * 512 - $$8; \
131 print x " bytes available"; if (x < 0) exit 1 }'
132 dd if=boot2$s.ld of=${.TARGET} obs=$$(( (${NSECT$s} - 1) * 512)) conv=osync 2>/dev/null
135 dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
137 boot2$s.bin: boot2$s.out
138 objcopy -S -O binary boot2$s.out ${.TARGET}
140 boot2$s.out: boot2$s.o sio.o ${_ADDOBJS$s}
141 ${LD} ${LDFLAGS} -Ttext ${ORG2} ${LINKSCRIPT} -o ${.TARGET} \
142 ${BTX}/lib/crt0.o ${.ALLSRC}
144 CLEANFILES+= boot1$s boot1$s.out boot1$s.o \
145 boot2$s boot2$s.ldr boot2$s.bin \
146 boot2$s.ld boot2$s.out boot2$s.o boot2$s.h boot2$s.s \
149 hammerread$s.o: hammerread.c
150 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
152 ufsread$s.o: ufsread.c
153 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
158 ${CC} ${CFLAGS} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
159 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
160 ${.ALLSRC} -o ${.TARGET} -c
163 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
164 boot ${DESTDIR}${BINDIR}/boot
165 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
166 boot1_32 ${DESTDIR}${BINDIR}/boot1
167 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
168 boot2_32 ${DESTDIR}${BINDIR}/boot2
169 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
170 boot1_64 ${DESTDIR}${BINDIR}/boot1_64
171 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
172 boot2_64 ${DESTDIR}${BINDIR}/boot2_64
174 .include <bsd.prog.mk>
176 .if defined(REALLY_X86_64)
177 # For x86_64, we need to fake up a complete machine/ tree
178 # so that types for -m32 appear correctly.
182 beforedepend ${OBJS}: machine cpu
186 ${LN} -sf ${.CURDIR}/../../../cpu/i386/include/* machine
187 ${LN} -sf ${.CURDIR}/../../../platform/pc32/include/* machine
190 ${LN} -hsf ${.CURDIR}/../../../cpu/i386/include cpu
192 CLEANDIRS+= machine cpu
195 CLEANFILES+= bootasmdef.nx