1# $FreeBSD$ 2 3.include <bsd.init.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 -D${BOOT2_UFS} \ 29 -DFLAGS=${BOOT_BOOT1_FLAGS} \ 30 -DSIOPRT=${BOOT_COMCONSOLE_PORT} \ 31 -DSIOFMT=${B2SIOFMT} \ 32 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \ 33 -I${LDRSRC} \ 34 -Wall -Waggregate-return -Wbad-function-cast -Wno-cast-align \ 35 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ 36 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \ 37 -Winline 38 39CFLAGS.gcc+= -Os \ 40 -fno-asynchronous-unwind-tables \ 41 --param max-inline-insns-single=100 42.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201 43CFLAGS.gcc+= -mno-align-long-strings 44.endif 45 46CFLAGS.clang+= -Oz ${CLANG_OPT_SMALL} 47 48LD_FLAGS+=${LD_FLAGS_BIN} 49 50CLEANFILES+= boot 51 52boot: boot1 boot2 53 cat boot1 boot2 > boot 54 55CLEANFILES+= boot1 boot1.out boot1.o 56 57boot1: boot1.out 58 ${OBJCOPY} -S -O binary boot1.out ${.TARGET} 59 60boot1.out: boot1.o 61 ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o 62 63CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \ 64 boot2.h sio.o 65 66BOOT2SIZE= 7680 67 68boot2: boot2.ld 69 @set -- `ls -l ${.ALLSRC}`; x=$$((${BOOT2SIZE}-$$5)); \ 70 echo "$$x bytes available"; test $$x -ge 0 71 ${DD} if=${.ALLSRC} of=${.TARGET} obs=${BOOT2SIZE} conv=osync 72 73boot2.ld: boot2.ldr boot2.bin ${BTXKERN} 74 btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \ 75 -o ${.TARGET} -P 1 boot2.bin 76 77boot2.ldr: 78 ${DD} if=/dev/zero of=${.TARGET} bs=512 count=1 79 80boot2.bin: boot2.out 81 ${OBJCOPY} -S -O binary boot2.out ${.TARGET} 82 83boot2.out: ${BTXCRT} boot2.o sio.o 84 ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC} 85 86SRCS= boot2.c boot2.h 87 88boot2.h: boot1.out 89 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \ 90 { x = $$1 - ORG1; \ 91 printf("#define XREADORG %#x\n", REL1 + x) }' \ 92 ORG1=`printf "%d" ${ORG1}` \ 93 REL1=`printf "%d" ${REL1}` > ${.TARGET} 94 95.include <bsd.prog.mk> 96 97# XXX: clang integrated-as doesn't grok .codeNN directives yet 98CFLAGS.boot1.S= ${CLANG_NO_IAS} 99