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= -fomit-frame-pointer \ 26 -mrtd \ 27 -mregparm=3 \ 28 -DUSE_XREAD \ 29 -D${BOOT2_UFS} \ 30 -DFLAGS=${BOOT_BOOT1_FLAGS} \ 31 -DSIOPRT=${BOOT_COMCONSOLE_PORT} \ 32 -DSIOFMT=${B2SIOFMT} \ 33 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \ 34 -I${.CURDIR}/../../common \ 35 -I${.CURDIR}/../btx/lib -I. \ 36 -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \ 37 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ 38 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \ 39 -Winline 40 41CFLAGS.gcc+= -Os \ 42 -fno-guess-branch-probability \ 43 -fno-unit-at-a-time \ 44 --param max-inline-insns-single=100 45.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201 46CFLAGS.gcc+= -mno-align-long-strings 47.endif 48 49CFLAGS.clang+= -Oz ${CLANG_OPT_SMALL} 50 51LD_FLAGS=-static -N --gc-sections 52 53# Pick up ../Makefile.inc early. 54.include <bsd.init.mk> 55 56CLEANFILES= boot 57 58boot: boot1 boot2 59 cat boot1 boot2 > boot 60 61CLEANFILES+= boot1 boot1.out boot1.o 62 63boot1: boot1.out 64 ${OBJCOPY} -S -O binary boot1.out ${.TARGET} 65 66boot1.out: boot1.o 67 ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o 68 69CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \ 70 boot2.s boot2.s.tmp boot2.h sio.o 71 72boot2: boot2.ld 73 @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \ 74 echo "$$x bytes available"; test $$x -ge 0 75 dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync status=none 76 77boot2.ld: boot2.ldr boot2.bin ${BTXKERN} 78 btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \ 79 -o ${.TARGET} -P 1 boot2.bin 80 81boot2.ldr: 82 dd if=/dev/zero of=${.TARGET} bs=512 count=1 status=none 83 84boot2.bin: boot2.out 85 ${OBJCOPY} -S -O binary boot2.out ${.TARGET} 86 87boot2.out: ${BTXCRT} boot2.o sio.o 88 ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC} 89 90boot2.o: boot2.s 91 ${CC} ${ACFLAGS} -c boot2.s 92 93SRCS= boot2.c boot2.h 94 95boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c 96 ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c 97 sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s 98 rm -f boot2.s.tmp 99 100boot2.h: boot1.out 101 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \ 102 { x = $$1 - ORG1; \ 103 printf("#define XREADORG %#x\n", REL1 + x) }' \ 104 ORG1=`printf "%d" ${ORG1}` \ 105 REL1=`printf "%d" ${REL1}` > ${.TARGET} 106 107.if ${MACHINE_CPUARCH} == "amd64" 108beforedepend boot2.s: machine 109CLEANFILES+= machine 110machine: ${.CURDIR}/../../../i386/include .NOMETA 111 ln -sf ${.ALLSRC} ${.TARGET} 112.endif 113 114.include <bsd.prog.mk> 115 116# XXX: clang integrated-as doesn't grok .codeNN directives yet 117CFLAGS.boot1.S= ${CLANG_NO_IAS} 118CFLAGS+= ${CFLAGS.${.IMPSRC:T}} 119