.include <bsd.init.mk>
PROG= ${LDR}
INTERNALPROG=
FILES= ${BOOT}
MAN= ${BOOT}.8
SRCS= ${LDR}.S
CLEANFILES+= ${BOOT}
BOOT= pxeboot
LDR= pxeldr
ORG= 0x7c00
LOADER= loader
.if defined(BOOT_PXELDR_PROBE_KEYBOARD)
CFLAGS+=-DPROBE_KEYBOARD
.endif
.if defined(BOOT_PXELDR_ALWAYS_SERIAL)
CFLAGS+=-DALWAYS_SERIAL
.endif
CFLAGS+=-I${BOOTSRC}/i386/common
.if defined(PXEBOOT_DEFAULT_INTERP)
L=${PXEBOOT_DEFAULT_INTERP}
.else
L=${LOADER_DEFAULT_INTERP}
.endif
LOADERBIN= ${BOOTOBJ}/i386/loader_${L}/loader_${L}.bin
# pxeboot runs in an environment where there's 500k or less of space available
# due to space for packet buffers, network drivers, etc. While some environments
# may have a bit more, the limit of 500,000 (488k) provides enough margin to
# work in a huge array of environments. Larger values may work for specific
# environments.
PXEBOOTSIZE?=500000
CLEANFILES+= ${BOOT}.tmp
${BOOT}: ${LDR} ${LOADER}
cat ${LDR} ${LOADER} > ${.TARGET}.tmp
${DD} if=${.TARGET}.tmp of=${.TARGET} bs=2048 conv=sync
rm ${.TARGET}.tmp
LDFLAGS+=${LDFLAGS_BIN}
CLEANFILES+= ${LOADER}
# Note: pxeldr.S assumes a.out and will require changes for ELF if the output
# format is changed to ELF.
${LOADER}: ${LOADERBIN} ${BTXLDR} ${BTXKERN}
@set -- `ls -l ${LOADERBIN}` ; x=$$((${PXEBOOTSIZE}-$$5)); \
echo "$$x bytes available"; test $$x -ge 0
btxld -v -f aout -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \
-b ${BTXKERN} ${LOADERBIN}
.include <bsd.prog.mk>
