df52a87993
and re-enable it as default. In particular: + re-enable the 'update' flag in the Makefile (of course!); + commit Warner's patch "orb $NOUPDATE,_FLAGS(%bp)" to avoid writing to disk in case of a timeout/default choice; + fix an off-by-one count in the partition scan code that would print the wrong name for unknown partitions; + unconditionally change the boot prompt to 'Boot:' instead of 'Default:' to make room for the extra code/checks/messages. Some of the changes listed below are also made to save space; + rearrange and fix comments for known partition types. Right now we explicitly recognise *BSD, Linux, FAT16 (type 6, used on many USB keys), NTFS (type 7), FAT32 (type 11). Depending on other options we also recognise Extended (type 5), FAT12 (type 1) and FAT16 < 32MB (type 4). + Add an entry "F6 PXE" when the code is built with -DPXE (which is a default now). Technically, F6 boots through INT18, so the prompt 'PXE' is a bit misleading. Unfortunately the name INT18 is too long and does not fit in - we could use ROM perhaps. The reason I picked 'PXE' is that on many (I believe) new systems INT18 calls PXE. Apart from the choice of the name for PXE/ROM/INT18, this should close pending issues on the 1-sector boot0 code and we should be able to move the code to RELENG_7 when it reopens. No boot0cfg changes are necessary. MFC after: 3 weeks
80 lines
2.6 KiB
Makefile
80 lines
2.6 KiB
Makefile
# $FreeBSD$
|
|
|
|
PROG?= boot0
|
|
STRIP=
|
|
BINMODE=${NOBINMODE}
|
|
NO_MAN=
|
|
SRCS= ${PROG}.S
|
|
|
|
# Additional options that you can specify with make OPTS="..."
|
|
# (these only apply to boot0.S)
|
|
#
|
|
# -DVOLUME_SERIAL support volume serial number (NT, XP, Vista)
|
|
# -DSIO do I/O using COM1:
|
|
# -DPXE fallback to INT18/PXE with F6
|
|
# -DCHECK_DRIVE enable checking drive number
|
|
# -DONLY_F_KEYS accept only Fx keys in console
|
|
# -DTEST print drive number on entry
|
|
#
|
|
OPTS ?= -DVOLUME_SERIAL -DPXE
|
|
CFLAGS += ${OPTS}
|
|
|
|
# Flags used in the boot0.S code:
|
|
# 0x0f all valid partitions enabled.
|
|
# 0x80 'packet', use BIOS EDD (LBA) extensions instead of CHS
|
|
# to read from disk. boot0.S does not check that the extensions
|
|
# are supported, but all modern BIOSes should have them.
|
|
# 0x40 'noupdate', disable writing boot0 back to disk so that
|
|
# the current selection is not preserved across reboots.
|
|
# 0x20 'setdrv', override the drive number supplied by the bios
|
|
# with the one in the boot sector.
|
|
|
|
# Default boot flags:
|
|
BOOT_BOOT0_FLAGS?= 0x8f
|
|
|
|
# The number of timer ticks to wait for a keypress before assuming the default
|
|
# selection. Since there are 18.2 ticks per second, the default value of
|
|
# 0xb6 (182d) corresponds to 10 seconds.
|
|
BOOT_BOOT0_TICKS?= 0xb6
|
|
|
|
# The base address that we the boot0 code to to run it. Don't change this
|
|
# unless you are glutton for punishment.
|
|
BOOT_BOOT0_ORG?= 0x600
|
|
|
|
# Comm settings for boot0sio.
|
|
# Bit(s) Description
|
|
# 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
|
|
# 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
|
|
# 2 stop bits (set = 2, clear = 1)
|
|
# 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
|
|
.if !defined(BOOT_BOOT0_COMCONSOLE_SPEED)
|
|
BOOT_COMCONSOLE_SPEED?= 9600
|
|
.if ${BOOT_COMCONSOLE_SPEED} == 9600
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 4800
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "6 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 2400
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "5 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 1200
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "4 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 600
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "3 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 300
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "2 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 150
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "1 << 5 + 3"
|
|
.elif ${BOOT_COMCONSOLE_SPEED} == 110
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "0 << 5 + 3"
|
|
.else
|
|
BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
|
|
.endif
|
|
.endif
|
|
|
|
CFLAGS+=-DFLAGS=${BOOT_BOOT0_FLAGS} \
|
|
-DTICKS=${BOOT_BOOT0_TICKS} \
|
|
-DCOMSPEED=${BOOT_BOOT0_COMCONSOLE_SPEED}
|
|
|
|
LDFLAGS=-N -e start -Ttext ${BOOT_BOOT0_ORG} -Wl,-S,--oformat,binary
|
|
|
|
.include <bsd.prog.mk>
|