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
17 .PATH: ${.CURDIR}/../../../libkern
19 # A value of 0x80 enables LBA support.
22 BOOT_COMCONSOLE_PORT?= 0x3f8
23 BOOT_COMCONSOLE_SPEED?= 9600
26 .if exists(${.OBJDIR}/../btx)
27 BTX= ${.OBJDIR}/../btx
29 BTX= ${.CURDIR}/../btx
32 # These origins are taken from bootasm.h.
34 REL1 = `${.OBJDIR}/../asmdef/bootasmdef.nx BOOT1_ORIGIN`
35 REL1D = `${.OBJDIR}/../asmdef/bootasmdef.nx -d BOOT1_ORIGIN`
36 ORG1 = `${.OBJDIR}/../asmdef/bootasmdef.nx MEM_BIOS_LADDR`
37 ORG1D = `${.OBJDIR}/../asmdef/bootasmdef.nx -d MEM_BIOS_LADDR`
39 # WARNING! The ORG2 calculation is the origin of boot2.bin relative to
40 # the start of the BTX *USER* address space, not the start of physical
43 ORG2= `${.OBJDIR}/../asmdef/bootasmdef.nx BOOT2_VORIGIN`
45 WORLD_CCOPTLEVEL= s # -Os for size constraints in boot2_32
47 -fomit-frame-pointer \
49 -fno-asynchronous-unwind-tables \
51 -I${.CURDIR}/../../common \
52 -I${.CURDIR}/../../../../lib/libstand \
53 -I${.CURDIR}/../btx/lib -I. \
54 -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
55 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
56 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings
60 # Tell gcc that it shouldn't do fancy optimizations for newer processors.
61 # Otherwise it winds up creating larger code and we won't be able to fit boot2.
64 # Unfortunately, unit-at-a-time creates issues as yet
65 # not tracked down, in boot2, so we have to turn it off. Note that
66 # the problem has been narrowed down to the 'boot2' code. The /boot/loader
67 # doesn't seem to have a problem. Added to BOOT2_GCC_FLAGS since clang
68 # doesn't recognize this flag. The no-guess-branch-probability flag is also
69 # gcc-specific so it was moved to BOOT2_GCC_FLAGS as well.
71 CFLAGS+= ${BOOT2_GCC_FLAGS}
73 # boot2 area in 32 bit disklabel is 16 sectors (8K)
75 # boot2 area in 64 bit disklabel is 64 sectors (32K).
76 # However, the boot1 btx loader puts boot2 at a physical address
77 # of MEM_BTX_USR+BOOT2_VORIGIN which is typically 0xC000, so we
78 # cannot make boot2 any larger then 16KB or we overflow the segment.
82 LDFLAGS= -nostdlib -static -N --gc-sections
83 LINKSCRIPT= --script ${.CURDIR}/boot2.ldscript
87 boot: boot1_32 boot2_32
92 _ADDCFLAGS$s:= -DNSECT=${NSECT$s}
95 _ADDCFLAGS$s+= -DDISKLABEL64
96 _ADDCFLAGS$s+= -DHAMMER2FS -DUFS
97 _ADDOBJS$s+= hammer2$s.o ufsread$s.o scrc32$s.o
99 _ADDCFLAGS$s+= -DUFS -DUFS1_ONLY
100 _ADDOBJS$s+= ufsread$s.o
106 objcopy -S -O binary boot1$s.out ${.TARGET}
108 boot1$s.out: boot1$s.o bootasm.h
109 ${LD} ${LDFLAGS:N-Wl,*} -e start -Ttext ${ORG1} -o ${.TARGET} ${.ALLSRC:M*.o}
112 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -DFLAGS=${B1FLAGS} \
113 ${ASSEMBLER_FLAGS} ${.ALLSRC} -o ${.TARGET} -c
115 #${.CURDIR}/../../common/ufsread.c ${.CURDIR}/../../../../lib/libstand/hammer2.c
117 boot2$s.s: boot2.c boot2$s.h ufsread.c hammer2.c scrc32.c
118 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -S -o boot2$s.s.tmp ${.CURDIR}/boot2.c
119 sed -e '/align/d' -e '/nop/d' < ${.TARGET}.tmp > ${.TARGET}
123 ${AS} ${AFLAGS} -o ${.TARGET} boot2$s.s
125 boot2$s.h: boot1$s.out bootasm.h
126 @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
127 ${NM} -t d ${.ALLSRC:M*.out} | awk '/([0-9])+ T xread/ \
129 printf("#define XREADORG %#x\n", REL1 + x) }' \
130 ORG1=${ORG1D} REL1=${REL1D} > boot2$s.h
132 boot2$s: boot2$s.ldr boot2$s.bin ${BTX}/btx/btx
133 ${.OBJDIR}/../btxld/btxld.nx -v -E ${ORG2} -f bin -b ${BTX}/btx/btx \
134 -l boot2$s.ldr -o boot2$s.ld -P 1 boot2$s.bin
135 stat boot2$s.ld | awk '{ x = (${NSECT$s} - 1) * 512 - $$8; \
136 print x " bytes available"; if (x < 0) exit 1 }'
137 dd if=boot2$s.ld of=${.TARGET} obs=$$(( (${NSECT$s} - 1) * 512)) conv=osync 2>/dev/null
140 dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
142 boot2$s.bin: boot2$s.out
143 objcopy -S -O binary boot2$s.out ${.TARGET}
145 boot2$s.out: boot2$s.o sio.o ${_ADDOBJS$s}
146 ${LD} ${LDFLAGS:N-Wl,*} -Ttext ${ORG2} ${LINKSCRIPT} -o ${.TARGET} \
147 ${BTX}/lib/crt0.o ${.ALLSRC}
149 CLEANFILES+= boot1$s boot1$s.out boot1$s.o \
150 boot2$s boot2$s.ldr boot2$s.bin \
151 boot2$s.ld boot2$s.out boot2$s.o boot2$s.h boot2$s.s \
154 hammer2$s.o: hammer2.c
155 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
157 ufsread$s.o: ufsread.c
158 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
161 ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
166 ${CC} ${CFLAGS} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
167 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
168 ${.ALLSRC} -o ${.TARGET} -c
171 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
172 boot ${DESTDIR}${BINDIR}/boot
173 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
174 boot1_32 ${DESTDIR}${BINDIR}/boot1
175 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
176 boot2_32 ${DESTDIR}${BINDIR}/boot2
177 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
178 boot1_64 ${DESTDIR}${BINDIR}/boot1_64
179 ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
180 boot2_64 ${DESTDIR}${BINDIR}/boot2_64
182 .include <bsd.prog.mk>