Makefile revision 128718 
1# $FreeBSD: head/sys/boot/i386/boot0/Makefile 128718 2004-04-28 16:16:16Z ru $
2
3PROG=	${BOOT}
4INTERNALPROG=
5FILES=	${BOOT}
6NOMAN=
7SRCS=	${BOOT}.s
8
9BOOT?=	boot0
10
11# The default set of flags compiled into boot0.  This enables update (writing
12# the modified boot0 back to disk after running so that the selection made is
13# saved), packet mode (detect and use the BIOS EDD extensions if we try to
14# boot past the 1024 cylinder liimt), and booting from all valid slices.
15BOOT_BOOT0_FLAGS?=	0xf
16
17# The number of timer ticks to wait for a keypress before assuming the default
18# selection.  Since there are 18.2 ticks per second, the default value of
19# 0xb6 (182d) corresponds to 10 seconds.
20BOOT_BOOT0_TICKS?=	0xb6
21
22# The base address that we the boot0 code to to run it.  Don't change this
23# unless you are glutton for punishment.
24BOOT_BOOT0_ORG?=	0x600
25
26# Comm settings for boot0sio.  0xE3 => 9600 8-N-1
27# XXX: We should create a build-tool or something to convert BOOT_CONSOLE_SPEED
28# and BOOT_COMCONSOLE_PORT into the correct values to define on the build
29# command line
30BOOT_BOOT0_COMCONSOLE_SPEED?=	0xE3
31
32AFLAGS+=--defsym FLAGS=${BOOT_BOOT0_FLAGS} \
33	--defsym TICKS=${BOOT_BOOT0_TICKS} \
34	--defsym COMSPEED=${BOOT_BOOT0_COMCONSOLE_SPEED}
35
36LDFLAGS=-N -e start -Ttext ${BOOT_BOOT0_ORG} -Wl,-S,--oformat,binary
37
38CLEANFILES+= boot0.s
39boot0.s: boot0_512.s
40	cpp -USIO < ${.ALLSRC} > ${.TARGET}
41
42CLEANFILES+= boot0sio.s
43boot0sio.s: boot0_512.s
44	cpp -DSIO < ${.ALLSRC} > ${.TARGET}
45
46.include <bsd.prog.mk>
47