1# $FreeBSD$ 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 -fno-guess-branch-probability \ 27 -fomit-frame-pointer \ 28 -fno-unit-at-a-time \ 29 -mno-align-long-strings \ 30 -mrtd \ 31 -mregparm=3 \ 32 -DUSE_XREAD \ 33 -D${BOOT2_UFS} \ 34 -DFLAGS=${BOOT_BOOT1_FLAGS} \ 35 -DSIOPRT=${BOOT_COMCONSOLE_PORT} \ 36 -DSIOFMT=${B2SIOFMT} \ 37 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \ 38 -I${.CURDIR}/../../common \ 39 -I${.CURDIR}/../btx/lib -I. \ 40 -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \ 41 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ 42 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \ 43 -Winline --param max-inline-insns-single=100 \ 44 ${CLANG_OPT_SMALL} 45 46LDFLAGS=-static -N --gc-sections 47 48# Pick up ../Makefile.inc early. 49.include <bsd.init.mk> 50 51CLEANFILES= boot 52 53boot: boot1 boot2 54 cat boot1 boot2 > boot 55 56CLEANFILES+= boot1 boot1.out boot1.o 57 58boot1: boot1.out 59 objcopy -S -O binary boot1.out ${.TARGET} 60 61boot1.out: boot1.o 62 ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o 63 64CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \ 65 boot2.s boot2.s.tmp boot2.h sio.o 66 67boot2: boot2.ld 68 @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \ 69 echo "$$x bytes available"; test $$x -ge 0 70 dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync 71 72boot2.ld: boot2.ldr boot2.bin ${BTXKERN} 73 btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \ 74 -o ${.TARGET} -P 1 boot2.bin 75 76boot2.ldr: 77 dd if=/dev/zero of=${.TARGET} bs=512 count=1 78 79boot2.bin: boot2.out 80 objcopy -S -O binary boot2.out ${.TARGET} 81 82boot2.out: ${BTXCRT} boot2.o sio.o 83 ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC} 84 85boot2.o: boot2.s 86 ${CC} ${ACFLAGS} -c boot2.s 87 88SRCS= boot2.c boot2.h 89 90boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c 91 ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c 92 sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s 93 rm -f boot2.s.tmp 94 95boot2.h: boot1.out 96 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \ 97 { x = $$1 - ORG1; \ 98 printf("#define XREADORG %#x\n", REL1 + x) }' \ 99 ORG1=`printf "%d" ${ORG1}` \ 100 REL1=`printf "%d" ${REL1}` > ${.TARGET} 101 102.if ${MACHINE_CPUARCH} == "amd64" 103beforedepend boot2.s: machine 104CLEANFILES+= machine 105machine: 106 ln -sf ${.CURDIR}/../../../i386/include machine 107.endif 108 109.include <bsd.prog.mk> 110 111# XXX: clang integrated-as doesn't grok .codeNN directives yet 112CFLAGS.boot1.S= ${CLANG_NO_IAS} 113CFLAGS+= ${CFLAGS.${.IMPSRC:T}} 114