freebsd-dev/sys/boot/i386/boot0/Makefile

# $FreeBSD$

PROG=		boot0
NOMAN=
STRIP=
BINDIR?=	/boot
BINMODE=	444

M4?=	m4

# update, packet mode, and all slices enabled by default
B0FLAGS=0x8f
B0TICKS=0xb6

ORG=	0x600

boot0: boot0.o
.if ${OBJFORMAT} == aout
	${LD} -N -s -T ${ORG} -o boot0.out boot0.o
	dd if=boot0.out of=${.TARGET} ibs=32 skip=1
.else
	${LD} -N -e start -Ttext ${ORG} -o boot0.out boot0.o
	objcopy -S -O binary boot0.out ${.TARGET}
.endif

boot0.o: boot0.s
	${AS} ${AFLAGS} --defsym FLAGS=${B0FLAGS} --defsym TICKS=${B0TICKS} \
		${.IMPSRC} -o ${.TARGET}

CLEANFILES+= boot0.out boot0.o

.include <bsd.prog.mk>
$Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00			`# $FreeBSD$`
Install in /boot. 1998-10-05 19:20:36 +00:00
			`PROG= boot0`
			`NOMAN=`
			`STRIP=`
			`BINDIR?= /boot`
Set BINMODE to 444. 1998-10-17 14:20:25 +00:00			`BINMODE= 444`
boot0 is a booteasy (boot manager) workalike with EDD support. 1998-10-05 10:08:37 +00:00
			`M4?= m4`

The new and improved boot0, v1.1. This version adds the following: - Autodetection and support of the BIOS EDD extensions to work around the 1024 cylinder limit on all but really ancient BIOS's. - To work around some BIOS's which break when EDD is used with older drives, we only attempt to use EDD if the cylinder is > 1023. - Since this new code required more space than we had left, expand boot0 to 2 sectors (1024 bytes) in length. - Add support for boot0 being multiple sectors using predefined constants. If boot0 needs to be extended in the future, all that is required is bumping the NUM_SECTORS constant. - Now that we have more room to work with, add a few more fs type descriptions while making others more verbose. 2000-07-12 18:11:54 +00:00			`# update, packet mode, and all slices enabled by default`
			`B0FLAGS=0x8f`
Make configurable (a) whether to use int 0x13 extensions; (b) timeout value. Ignore failure to update mbr sector. Disable interrupts while using extended registers. Default to F1 not F2. 1998-10-19 19:13:53 +00:00			`B0TICKS=0xb6`

boot0 is a booteasy (boot manager) workalike with EDD support. 1998-10-05 10:08:37 +00:00			`ORG= 0x600`

			`boot0: boot0.o`
Get this building as a.out or ELF. With thanks to: jdp 1998-10-09 17:19:51 +00:00			`.if ${OBJFORMAT} == aout`
			`${LD} -N -s -T ${ORG} -o boot0.out boot0.o`
			`dd if=boot0.out of=${.TARGET} ibs=32 skip=1`
			`.else`
boot0 is a booteasy (boot manager) workalike with EDD support. 1998-10-05 10:08:37 +00:00			`${LD} -N -e start -Ttext ${ORG} -o boot0.out boot0.o`
Don't use an absolute path to objcopy. Noticed by: Scott Mace <smace@intt.org> 1998-10-13 18:29:18 +00:00			`objcopy -S -O binary boot0.out ${.TARGET}`
Get this building as a.out or ELF. With thanks to: jdp 1998-10-09 17:19:51 +00:00			`.endif`
boot0 is a booteasy (boot manager) workalike with EDD support. 1998-10-05 10:08:37 +00:00
Clean up all of the 16-bit assembly code in the x86 bootstrap to work with the new binutils. Now that we have a decent assembler, all the old m4 macros are no longer needed. Instead, straight assembly can be used since as(1) now understands 16-bit addressing, branches, etc. Also, several bugs have been fixed in as(1), allowing boot0.s to be further cleaned up. 2000-05-23 12:18:49 +00:00			`boot0.o: boot0.s`
			`${AS} ${AFLAGS} --defsym FLAGS=${B0FLAGS} --defsym TICKS=${B0TICKS} \`
			`${.IMPSRC} -o ${.TARGET}`
boot0 is a booteasy (boot manager) workalike with EDD support. 1998-10-05 10:08:37 +00:00
Install in /boot. 1998-10-05 19:20:36 +00:00			`CLEANFILES+= boot0.out boot0.o`
boot0 is a booteasy (boot manager) workalike with EDD support. 1998-10-05 10:08:37 +00:00
			`.include <bsd.prog.mk>`