1# $FreeBSD$ 2 3.include <bsd.init.mk> 4 5FILES= boot boot1 boot2 6 7# A value of 0x80 enables LBA support. 8BOOT_BOOT1_FLAGS?= 0x80 9 10BOOT_COMCONSOLE_PORT?= 0x3f8 11BOOT_COMCONSOLE_SPEED?= 9600 12B2SIOFMT?= 0x3 13 14REL1= 0x700 15ORG1= 0x7c00 16ORG2= 0x2000 17 18# Decide level of UFS support. 19BOOT2_UFS?= UFS1_AND_UFS2 20#BOOT2_UFS?= UFS2_ONLY 21#BOOT2_UFS?= UFS1_ONLY 22 23CFLAGS+=-fomit-frame-pointer \ 24 -mrtd \ 25 -mregparm=3 \ 26 -D${BOOT2_UFS} \ 27 -DFLAGS=${BOOT_BOOT1_FLAGS} \ 28 -DSIOPRT=${BOOT_COMCONSOLE_PORT} \ 29 -DSIOFMT=${B2SIOFMT} \ 30 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \ 31 -I${LDRSRC} \ 32 -Wall -Waggregate-return -Wbad-function-cast -Wno-cast-align \ 33 -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ 34 -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \ 35 -Winline 36 37CFLAGS.gcc+= -Os \ 38 -fno-asynchronous-unwind-tables \ 39 --param max-inline-insns-single=100 40.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201 41CFLAGS.gcc+= -mno-align-long-strings 42.endif 43 44CFLAGS.clang+= -Oz ${CLANG_OPT_SMALL} 45 46LD_FLAGS+=${LD_FLAGS_BIN} 47 48CLEANFILES+= boot 49 50boot: boot1 boot2 51 cat boot1 boot2 > boot 52 53CLEANFILES+= boot1 boot1.out boot1.o 54 55boot1: boot1.out 56 ${OBJCOPY} -S -O binary boot1.out ${.TARGET} 57 58boot1.out: boot1.o 59 ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o 60 61CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \ 62 boot2.h sio.o 63 64BOOT2SIZE= 7680 65 66boot2: boot2.ld 67 @set -- `ls -l ${.ALLSRC}`; x=$$((${BOOT2SIZE}-$$5)); \ 68 echo "$$x bytes available"; test $$x -ge 0 69 ${DD} if=${.ALLSRC} of=${.TARGET} obs=${BOOT2SIZE} conv=osync 70 71boot2.ld: boot2.ldr boot2.bin ${BTXKERN} 72 btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \ 73 -o ${.TARGET} -P 1 boot2.bin 74 75boot2.ldr: 76 ${DD} if=/dev/zero of=${.TARGET} bs=512 count=1 77 78boot2.bin: boot2.out 79 ${OBJCOPY} -S -O binary boot2.out ${.TARGET} 80 81boot2.out: ${BTXCRT} boot2.o sio.o 82 ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC} 83 84SRCS= boot2.c boot2.h 85 86boot2.h: boot1.out 87 ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \ 88 { x = $$1 - ORG1; \ 89 printf("#define XREADORG %#x\n", REL1 + x) }' \ 90 ORG1=`printf "%d" ${ORG1}` \ 91 REL1=`printf "%d" ${REL1}` > ${.TARGET} 92 93.include <bsd.prog.mk> 94 95# XXX: clang integrated-as doesn't grok .codeNN directives yet 96CFLAGS.boot1.S= ${CLANG_NO_IAS} 97