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# $FreeBSD: release/9.1.0/sys/boot/pc98/boot2/Makefile 220361 2011-04-05 13:48:53Z nyan $
.include <bsd.own.mk>
# XXX: clang can compile the boot code just fine, but boot2 gets too big
CC:=${CC:C/^(.*\/)?clang$/gcc/1}
FILES= boot boot1 boot2
NM?= nm
BOOT_COMCONSOLE_PORT?= 0x238
BOOT_COMCONSOLE_SPEED?= 9600
B2SIOFMT?= 0x3
REL1= 0x700
ORG1= 0
ORG2= 0x2000
# Decide level of UFS support.
BOOT2_UFS?= UFS1_AND_UFS2
#BOOT2_UFS?= UFS2_ONLY
#BOOT2_UFS?= UFS1_ONLY
CFLAGS= -Os \
-fno-guess-branch-probability \
-fomit-frame-pointer \
-fno-unit-at-a-time \
-mno-align-long-strings \
-mrtd \
-mregparm=3 \
-D${BOOT2_UFS} \
-DFLAGS=${BOOT_BOOT1_FLAGS} \
-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
-DSIOFMT=${B2SIOFMT} \
-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
-I${.CURDIR}/../../.. \
-I${.CURDIR}/../../i386/boot2 \
-I${.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 \
-Winline --param max-inline-insns-single=100
# Set machine type to PC98_SYSTEM_PARAMETER
#CFLAGS+= -DSET_MACHINE_TYPE
# Initialize the bi_bios_geom using the BIOS geometry
#CFLAGS+= -DGET_BIOSGEOM
LDFLAGS=-static -N --gc-sections
# Pick up ../Makefile.inc early.
.include <bsd.init.mk>
.PATH: ${.CURDIR}/../../i386/boot2
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
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
SRCS= boot2.c boot2.h
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 (read|putc)/ \
{ x = $$1 - ORG1; \
printf("#define %sORG %#x\n", toupper($$3), REL1 + x) }' \
ORG1=`printf "%d" ${ORG1}` \
REL1=`printf "%d" ${REL1}` > ${.TARGET}
.include <bsd.prog.mk>