The intended usage is:

	cat /usr/mdec/rawboot /sys/compile/FOO/kernel | fdwrite

That should explain it all  :-)

2 files changed, 100 insertions, 0 deletions

diff --git a/sys/i386/boot/rawboot/Makefile b/sys/i386/boot/rawboot/Makefile
new file mode 100644
index 0000000..5c136c9
--- /dev/null
+++ b/sys/i386/boot/rawboot/Makefile
@@ -0,0 +1,83 @@
+#	$Id: Makefile,v 1.45 1996/09/07 21:16:44 bde Exp $
+#
+
+PROG=	boot
+
+# Order is very important on the SRCS line for this prog
+SRCS=	start.S table.c boot2.S boot.c asm.S bios.S serial.S
+SRCS+=  probe_keyboard.c io.c disk.c sys.c
+
+.PATH:	${.CURDIR}/../biosboot
+
+BINDIR=		/usr/mdec
+BINMODE=	444
+CFLAGS=         -O2 \
+		-DRAWBOOT \
+		-I${.CURDIR}/../biosboot \
+		-DBOOTWAIT=${BOOTWAIT} -DTIMEOUT=${TIMEOUT}
+CFLAGS+=	-DCOMCONSOLE=0x3F8
+CFLAGS+=	-DBOOTSEG=${BOOTSEG} -DBOOTSTACK=${BOOTSTACK}
+
+# Probe the keyboard and use the serial console if the keyboard isn't found.
+#CFLAGS+=	-DPROBE_KEYBOARD
+
+# Force use of the serial console (after probing the keyboard if
+# PROBE_KEYBOARD is defined).
+#CFLAGS+=	-DFORCE_COMCONSOLE
+
+# Enable code to take the default boot string from a fixed location on the
+# disk.  See nextboot(8) and README.386BSD for more info.
+#CFLAGS+=	-DNAMEBLOCK
+#CFLAGS+=	-DNAMEBLOCK_WRITEBACK
+
+# Bias the conversion from the BIOS drive number to the FreeBSD unit number
+# for hard disks.  This may be useful for people booting in a mixed IDE/SCSI
+# environment (set BOOT_HD_BIAS to the number of IDE drives).
+#CFLAGS+=	-DBOOT_HD_BIAS=1
+#
+# Details: this only applies if BOOT_HD_BIAS > 0.  If the BIOS drive number
+# for the boot drive is >= BOOT_HD_BIAS, then the boot drive is assumed to
+# be SCSI and have unit number (BIOS_drive_number - BOOT_HD_BIAS).  E.g.,
+# BOOT_HD_BIAS=1 makes BIOS drive 1 correspond to 1:sd(0,a) instead of
+# 1:wd(1,a).  If `sd' is given explicitly, then the drive is assumed to be
+# SCSI and have BIOS drive number (sd_unit_number + BOOT_HD_BIAS).  E.g.,
+# BOOT_HD_BIAS=1 makes sd(0,a) correspond to 1:sd(0,a) instead of 0:sd(0,a).
+
+CLEANFILES+=	boot.nohdr boot.strip rawboot sizetest
+DPADD=		${LIBC}
+LDFLAGS+=	-N -T 0 -nostdlib
+LDADD=		-lc
+NOSHARED=	YES
+NOMAN=
+STRIP=
+
+# tunable timeout parameter, waiting for keypress, calibrated in ms
+BOOTWAIT?=	5000
+# tunable timeout during string input, calibrated in ms
+#TIMEOUT?=	30000
+
+# Location that boot2 is loaded at
+BOOTSEG=	0x1000
+
+# Offset in BOOTSEG for the top of the stack, keep this 16 byte aligned
+BOOTSTACK=	0xFFF0
+
+boot.strip:	boot
+	cp -p boot boot.strip
+	strip boot.strip
+	size boot.strip
+
+boot.nohdr:	boot.strip
+	dd if=boot.strip of=boot.nohdr ibs=32 skip=1 obs=1024b
+	ls -l boot.nohdr
+
+rawboot:	boot.nohdr
+	dd if=boot.nohdr of=rawboot bs=8k count=1 conv=sync
+
+all:		rawboot 
+
+install:
+	${INSTALL} ${COPY} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE}\
+		rawboot ${DESTDIR}${BINDIR}/rawboot
+
+.include <bsd.prog.mk>
diff --git a/sys/i386/boot/rawboot/README b/sys/i386/boot/rawboot/README
new file mode 100644
index 0000000..4cf51f0
--- /dev/null
+++ b/sys/i386/boot/rawboot/README
@@ -0,0 +1,17 @@
+RAWboot readme.
+
+This is a dumber version of the code in biosboot.
+
+The intended usage is:
+
+	cat /usr/mdec/rawboot /sys/compile/FOO/kernel | fdwrite
+
+This makes it a lot easier to make a bootable floppy, and saves space
+on the floppy to boot.
+
+Of course the name you enter for the kernel isn't used...  Then again
+if you know how to make two kernels fit a floppy and have a use for
+it, you don't need this bootblock.
+
+Poul-Henning Kamp
+phk@FreeBSD.org