1 # $FreeBSD: src/sys/boot/i386/boot0/Makefile,v 1.17 2002/09/17 01:48:54 peter Exp $
2 # $DragonFly: src/sys/boot/pc32/boot0/Makefile,v 1.6 2008/07/06 17:17:01 mneumann Exp $
12 # The default set of flags compiled into boot0. This enables update (writing
13 # the modified boot0 back to disk after running so that the selection made is
14 # saved), packet mode (detect and use the BIOS EDD extensions if we try to
15 # boot past the 1024 cylinder limit), and booting from all valid slices.
16 BOOT_BOOT0_FLAGS?= 0xf
18 # The number of timer ticks to wait for a keypress before assuming the default
19 # selection. Since there are 18.2 ticks per second, the default value of
20 # 0xb6 (182d) corresponds to 10 seconds.
21 BOOT_BOOT0_TICKS?= 0xb6
23 # Comm settings for boot0sio.
25 # 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
26 # 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
27 # 2 stop bits (set = 2, clear = 1)
28 # 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
29 .if !defined(BOOT_BOOT0_COMCONSOLE_SPEED)
30 BOOT_COMCONSOLE_SPEED?= 9600
31 .if ${BOOT_COMCONSOLE_SPEED} == 9600
32 BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
33 .elif ${BOOT_COMCONSOLE_SPEED} == 4800
34 BOOT_BOOT0_COMCONSOLE_SPEED= "6 << 5 + 3"
35 .elif ${BOOT_COMCONSOLE_SPEED} == 2400
36 BOOT_BOOT0_COMCONSOLE_SPEED= "5 << 5 + 3"
37 .elif ${BOOT_COMCONSOLE_SPEED} == 1200
38 BOOT_BOOT0_COMCONSOLE_SPEED= "4 << 5 + 3"
39 .elif ${BOOT_COMCONSOLE_SPEED} == 600
40 BOOT_BOOT0_COMCONSOLE_SPEED= "3 << 5 + 3"
41 .elif ${BOOT_COMCONSOLE_SPEED} == 300
42 BOOT_BOOT0_COMCONSOLE_SPEED= "2 << 5 + 3"
43 .elif ${BOOT_COMCONSOLE_SPEED} == 150
44 BOOT_BOOT0_COMCONSOLE_SPEED= "1 << 5 + 3"
45 .elif ${BOOT_COMCONSOLE_SPEED} == 110
46 BOOT_BOOT0_COMCONSOLE_SPEED= "0 << 5 + 3"
48 BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
52 CFLAGS+=-DFLAGS=${BOOT_BOOT0_FLAGS} \
53 -DTICKS=${BOOT_BOOT0_TICKS} \
54 -DCOMSPEED=${BOOT_BOOT0_COMCONSOLE_SPEED}
56 # pull BOOT0_ORIGIN out of bootasm.h
59 ${PROG}: boot0.o bootasmdef.nx
60 @echo "boot0 origin set to `${.OBJDIR}/bootasmdef.nx BOOT0_ORIGIN`"
61 ${LD} -N -e start -Ttext `${.OBJDIR}/bootasmdef.nx BOOT0_ORIGIN` -o boot0.out boot0.o
62 objcopy -S -O binary boot0.out ${.TARGET}
65 ${CC} -c ${CFLAGS} ${.IMPSRC} -o ${.TARGET}
67 CLEANFILES+= boot0.out boot0.o bootasmdef.nx
69 .include <bsd.prog.mk>