107 lines
2.6 KiB
Makefile
107 lines
2.6 KiB
Makefile
# $FreeBSD$
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PROG= boot2
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NOMAN=
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STRIP=
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BINDIR?= /boot
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BINMODE= 444
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CLEANFILES+= boot1 boot1.out boot1.o \
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boot2.ldr boot2.bin boot2.ld boot2.out boot2.o boot2.h \
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boot2.s sio.o
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NM?= nm
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# A value of 0x80 enables LBA support.
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B1FLAGS= 0x80
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BOOT_COMCONSOLE_PORT?= 0x3f8
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BOOT_COMCONSOLE_SPEED?= 9600
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B2SIOFMT?= 0x3
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.if exists(${.OBJDIR}/../btx)
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BTX= ${.OBJDIR}/../btx
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.else
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BTX= ${.CURDIR}/../btx
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.endif
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REL1= 0x700
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ORG1= 0x7c00
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ORG2= 0x2000
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# Decide Level of UFS support. UFS1_AND_UFS2 doesn't fit.
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# BOOT2_UFS?= UFS2_ONLY
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BOOT2_UFS?= UFS1_AND_UFS2
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# BOOT2_UFS?= UFS1_ONLY
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CFLAGS= -elf -ffreestanding -Os -fno-builtin \
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-fno-guess-branch-probability -fomit-frame-pointer\
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-mno-align-long-strings \
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-mrtd \
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-D${BOOT2_UFS} \
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-I${.CURDIR}/../../common \
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-I${.CURDIR}/../btx/lib -I. \
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-Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
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-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
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-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings
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LDFLAGS=-nostdlib -static -N --gc-sections
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all: boot1 boot2
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boot1: boot1.out
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objcopy -S -O binary boot1.out ${.TARGET}
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boot1.out: boot1.o
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${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
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boot1.o: boot1.s
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${CPP} ${CFLAGS} ${.IMPSRC} | \
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${AS} ${AFLAGS} --defsym FLAGS=${B1FLAGS} -o ${.TARGET}
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boot2.o: boot2.c ${.CURDIR}/../../common/ufsread.c
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${CC} ${CFLAGS} -S -o boot2.s.tmp ${.IMPSRC}
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sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
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rm -f boot2.s.tmp
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${AS} ${AFLAGS} -o boot2.o boot2.s
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boot2.h: boot1.out
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${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
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{ x = $$1 - ORG1; \
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printf("#define XREADORG %#x\n", REL1 + x) }' \
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ORG1=`printf "%d" ${ORG1}` \
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REL1=`printf "%d" ${REL1}` > boot2.h
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boot2: boot2.ldr boot2.bin ${BTX}/btx/btx
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btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2.ldr \
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-o boot2.ld -P 1 boot2.bin
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@ls -l boot2.ld | awk '{ x = 7680 - $$5; \
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print x " bytes available"; if (x < 0) exit 1 }'
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dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync 2>/dev/null
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boot2.ldr:
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dd if=/dev/zero of=${.TARGET} bs=276 count=1 2>/dev/null
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boot2.bin: boot2.out
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objcopy -S -O binary boot2.out ${.TARGET}
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boot2.out: boot2.o sio.o
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${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
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${BTX}/lib/crt0.o ${.ALLSRC}
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boot2.o: boot2.h
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sio.o: sio.s
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${AS} ${AFLAGS} --defsym SIOPRT=${BOOT_COMCONSOLE_PORT} \
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--defsym SIOFMT=${B2SIOFMT} \
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--defsym SIOSPD=${BOOT_COMCONSOLE_SPEED} \
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${.IMPSRC} -o ${.TARGET}
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install:
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${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
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boot1 ${DESTDIR}${BINDIR}/boot1
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${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
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boot2 ${DESTDIR}${BINDIR}/boot2
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.include <bsd.prog.mk>
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