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sector 0 of a disk and boot0.5 is the `boot selector' which starts from address 0x400. The IPL loads boot0.5 and boot0.5 loads bootblock of a slice. The boot manager stuff was developed by me (kato) with Borland C++, and then, translated into bcc in the ports collection by Nokubi-san. After that, boot0 has been translated into gas with the .code16 directive by Takahashi-san (nyan) and boot0.5 has been rewritten in gas by me.
26 lines
489 B
Makefile
26 lines
489 B
Makefile
# $FreeBSD$
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PROG= boot0.5
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OBJS= start.o boot.o boot0.5.o disk.o selector.o support.o \
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syscons.o
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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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ORG= 0x000
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# The size of boot0.5 must be 7168 bytes
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boot0.5: boot0.5.bin
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cat boot0.5.bin /dev/zero | dd of=boot0.5 bs=1 count=7168
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boot0.5.bin: boot0.5.out
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objcopy -S -O binary boot0.5.out ${.TARGET}
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boot0.5.out: ${OBJS}
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${LD} -N -e start -Ttext ${ORG} -o ${.TARGET} ${OBJS}
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CLEANFILES+= boot0.5.out boot0.5.bin
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.include <bsd.prog.mk>
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