1# $FreeBSD: stable/10/sys/boot/i386/boot2/Makefile 319025 2017-05-28 01:14:59Z ngie $ 2 3.include <bsd.own.mk> 4 5FILES= boot boot1 boot2 6 7NM?= nm 8 9# A value of 0x80 enables LBA support. 10BOOT_BOOT1_FLAGS?= 0x80 11 12BOOT_COMCONSOLE_PORT?= 0x3f8 13BOOT_COMCONSOLE_SPEED?= 9600 14B2SIOFMT?= 0x3 15 16REL1= 0x700 17ORG1= 0x7c00 18ORG2= 0x2000 19 20# Decide level of UFS support. 21BOOT2_UFS?= UFS1_AND_UFS2 22#BOOT2_UFS?= UFS2_ONLY 23#BOOT2_UFS?= UFS1_ONLY 24 25CFLAGS= -Os \ 26 -fomit-frame-pointer \ 27 -mrtd \ 28 -mregparm=3 \ 29 -DUSE_XREAD \ 30 -D${BOOT2_UFS} \ 31 -DFLAGS=${BOOT_BOOT1_FLAGS} \ 32 -DSIOPRT=${BOOT_COMCONSOLE_PORT} \ 33 -DSIOFMT=${B2SIOFMT} \ 34 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \ 35 -I${.CURDIR}/../../common \ 36 -I${.CURDIR}/../btx/lib -I. \ 37 -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \ 38 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ 39 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \ 40 -Winline \ 41 ${CLANG_OPT_SMALL} 42 43CFLAGS.gcc+= -fno-guess-branch-probability \ 44 -fno-unit-at-a-time \ 45 --param max-inline-insns-single=100 46.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201 47CFLAGS.gcc+= -mno-align-long-strings 48.endif 49 50LD_FLAGS=-static -N --gc-sections 51 52# Pick up ../Makefile.inc early. 53.include <bsd.init.mk> 54 55CLEANFILES= boot 56 57boot: boot1 boot2 58 cat boot1 boot2 > boot 59 60CLEANFILES+= boot1 boot1.out boot1.o 61 62boot1: boot1.out 63 ${OBJCOPY} -S -O binary boot1.out ${.TARGET} 64 65boot1.out: boot1.o 66 ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o 67 68CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \ 69 boot2.s boot2.s.tmp boot2.h sio.o 70 71BOOT2SIZE= 7680 72 73boot2: boot2.ld 74 @set -- `ls -l ${.ALLSRC}`; x=$$((${BOOT2SIZE}-$$5)); \ 75 echo "$$x bytes available"; test $$x -ge 0 76 ${DD} if=${.ALLSRC} of=${.TARGET} obs=${BOOT2SIZE} conv=osync 77 78boot2.ld: boot2.ldr boot2.bin ${BTXKERN} 79 btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \ 80 -o ${.TARGET} -P 1 boot2.bin 81 82boot2.ldr: 83 ${DD} if=/dev/zero of=${.TARGET} bs=512 count=1 84 85boot2.bin: boot2.out 86 ${OBJCOPY} -S -O binary boot2.out ${.TARGET} 87 88boot2.out: ${BTXCRT} boot2.o sio.o 89 ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC} 90 91boot2.o: boot2.s 92 ${CC} ${ACFLAGS} -c boot2.s 93 94SRCS= boot2.c boot2.h 95 96boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c 97 ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c 98 sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s 99 rm -f boot2.s.tmp 100 101boot2.h: boot1.out 102 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \ 103 { x = $$1 - ORG1; \ 104 printf("#define XREADORG %#x\n", REL1 + x) }' \ 105 ORG1=`printf "%d" ${ORG1}` \ 106 REL1=`printf "%d" ${REL1}` > ${.TARGET} 107 108.if ${MACHINE_CPUARCH} == "amd64" 109beforedepend boot2.s: machine 110CLEANFILES+= machine 111machine: 112 ln -sf ${.CURDIR}/../../../i386/include machine 113.endif 114 115.include <bsd.prog.mk> 116 117# XXX: clang integrated-as doesn't grok .codeNN directives yet 118CFLAGS.boot1.S= ${CLANG_NO_IAS} 119CFLAGS+= ${CFLAGS.${.IMPSRC:T}} 120