1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
# $FreeBSD$
#
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
BINMODE= 444
CFLAGS= -Os -mrtd \
-fno-guess-branch-probability \
-fno-unit-at-a-time \
-D_KERNEL -DPC98 -DBOOTWAIT=${BOOTWAIT} -DTIMEOUT=${TIMEOUT}
CFLAGS+= -DBOOTSEG=${BOOTSEG} -DBOOTSTACK=${BOOTSTACK}
CFLAGS+= ${CWARNFLAGS}
CFLAGS+= -I${.CURDIR}/../../.. -I.
# By default, if a serial port is going to be used as console, use COM1
# (aka /dev/ttyd0).
#BOOT_COMCONSOLE_PORT?=0x30
BOOT_COMCONSOLE_PORT?=0x238
BOOT_COMCONSOLE_CLK?=16
BOOT_COMCONSOLE_MODE=0x0c
CFLAGS+= -DCOMCONSOLE=${BOOT_COMCONSOLE_PORT} \
-DCOMCONSOLE_CLK=${BOOT_COMCONSOLE_CLK} \
-DCOMCONSOLE_MODE=${BOOT_COMCONSOLE_MODE}
# feature not implemented
BOOT_COMCONSOLE_SPEED?=9600
CFLAGS+= -DCOMSPEED=${BOOT_COMCONSOLE_SPEED}
# 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:da(0,a) instead of
# 1:wd(1,a). If `da' is given explicitly, then the drive is assumed to be
# SCSI and have BIOS drive number (da_unit_number + BOOT_HD_BIAS). E.g.,
# BOOT_HD_BIAS=1 makes da(0,a) correspond to 1:da(0,a) instead of 0:da(0,a).
CLEANFILES+= boot.nohdr boot.strip boot.ldr boot1 boot2 sizetest
LDFLAGS+= -N -Ttext 0 -e start
NO_SHARED= YES
NO_MAN=
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.nohdr: boot
objcopy -S -O binary boot boot.nohdr
ls -l boot.nohdr
boot.ldr: boot.nohdr
dd if=boot.nohdr of=boot.ldr bs=8192 count=1 conv=sync
boot1: boot.nohdr
dd if=boot.nohdr of=boot1 bs=512 count=1
boot2: boot.nohdr
dd if=boot.nohdr of=boot2 bs=512 skip=1
@dd if=boot2 skip=14 of=sizetest 2> /dev/null
@if [ -s sizetest ] ; then \
echo "boot2 is too big" >&2 ; \
rm boot2 ; \
exit 2 ; \
fi
all: boot.ldr boot1 boot2
install:
${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
boot.ldr ${DESTDIR}${BINDIR}/boot
${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
boot1 boot2 ${DESTDIR}${BINDIR}
# If it's not there, don't consider it a target
.if exists(${.CURDIR}/../../../i386/include)
beforedepend ${OBJS}: machine
machine:
ln -sf ${.CURDIR}/../../../i386/include machine
.endif
CLEANFILES+= machine
.include "${.CURDIR}/../../../conf/kern.mk"
.include <bsd.prog.mk>
|
