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# $FreeBSD$
FILES= boot boot1 boot2
NM?= nm
# A value of 0x80 enables LBA support.
B1FLAGS= 0x80
BOOT_COMCONSOLE_PORT?= 0x3f8
BOOT_COMCONSOLE_SPEED?= 9600
B2SIOFMT?= 0x3
REL1= 0x700
ORG1= 0x7c00
ORG2= 0x2000
# Decide level of UFS support.
BOOT2_UFS?= UFS1_AND_UFS2
#BOOT2_UFS?= UFS2_ONLY
#BOOT2_UFS?= UFS1_ONLY
AFLAGS+=--defsym FLAGS=${B1FLAGS} \
--defsym SIOPRT=${BOOT_COMCONSOLE_PORT} \
--defsym SIOFMT=${B2SIOFMT} \
--defsym SIOSPD=${BOOT_COMCONSOLE_SPEED}
CFLAGS= -elf -ffreestanding -Os -fno-builtin \
-fno-guess-branch-probability -fomit-frame-pointer\
-mno-align-long-strings \
-mrtd \
-D${BOOT2_UFS} \
-I${.CURDIR}/../../common \
-I${.CURDIR}/../btx/lib -I. \
-Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings
LDFLAGS=-nostdlib -static -N --gc-sections
# Pick up ../Makefile.inc early.
.include <bsd.init.mk>
CLEANFILES= boot
boot: boot1 boot2
cat boot1 boot2 > boot
CLEANFILES+= boot1 boot1.out boot1.o
boot1: boot1.out
objcopy -S -O binary boot1.out ${.TARGET}
boot1.out: boot1.o
${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
boot1.o: boot1.s
${CPP} ${CFLAGS} ${.CURDIR}/boot1.s | \
${AS} ${AFLAGS} -o ${.TARGET}
CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
boot2.s boot2.s.tmp boot2.h sio.o
boot2: boot2.ld
@set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
echo "$$x bytes available"; test $$x -ge 0
dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
-o ${.TARGET} -P 1 boot2.bin
boot2.ldr:
dd if=/dev/zero of=${.TARGET} bs=276 count=1
boot2.bin: boot2.out
objcopy -S -O binary boot2.out ${.TARGET}
boot2.out: ${BTXCRT} boot2.o sio.o
${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
boot2.o: boot2.s
boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
rm -f boot2.s.tmp
boot2.h: boot1.out
${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
{ x = $$1 - ORG1; \
printf("#define XREADORG %#x\n", REL1 + x) }' \
ORG1=`printf "%d" ${ORG1}` \
REL1=`printf "%d" ${REL1}` > ${.TARGET}
.if defined(REALLY_AMD64)
boot2.s: machine
machine:
ln -sf ${.CURDIR}/../../../i386/include machine
CLEANFILES+= machine
.endif
.include <bsd.prog.mk>
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