60 lines
2.0 KiB
Makefile
60 lines
2.0 KiB
Makefile
# $FreeBSD$
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PROG?= boot0
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STRIP=
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BINMODE=${NOBINMODE}
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NO_MAN=
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SRCS= ${PROG}.S
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# The default set of flags compiled into boot0. This enables update (writing
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# the modified boot0 back to disk after running so that the selection made is
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# saved), packet mode (detect and use the BIOS EDD extensions if we try to
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# boot past the 1024 cylinder liimt), and booting from all valid slices.
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BOOT_BOOT0_FLAGS?= 0x8f
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# The number of timer ticks to wait for a keypress before assuming the default
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# selection. Since there are 18.2 ticks per second, the default value of
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# 0xb6 (182d) corresponds to 10 seconds.
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BOOT_BOOT0_TICKS?= 0xb6
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# The base address that we the boot0 code to to run it. Don't change this
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# unless you are glutton for punishment.
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BOOT_BOOT0_ORG?= 0x600
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# Comm settings for boot0sio.
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# Bit(s) Description
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# 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
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# 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
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# 2 stop bits (set = 2, clear = 1)
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# 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
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.if !defined(BOOT_BOOT0_COMCONSOLE_SPEED)
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BOOT_COMCONSOLE_SPEED?= 9600
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.if ${BOOT_COMCONSOLE_SPEED} == 9600
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BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 4800
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BOOT_BOOT0_COMCONSOLE_SPEED= "6 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 2400
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BOOT_BOOT0_COMCONSOLE_SPEED= "5 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 1200
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BOOT_BOOT0_COMCONSOLE_SPEED= "4 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 600
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BOOT_BOOT0_COMCONSOLE_SPEED= "3 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 300
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BOOT_BOOT0_COMCONSOLE_SPEED= "2 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 150
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BOOT_BOOT0_COMCONSOLE_SPEED= "1 << 5 + 3"
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.elif ${BOOT_COMCONSOLE_SPEED} == 110
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BOOT_BOOT0_COMCONSOLE_SPEED= "0 << 5 + 3"
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.else
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BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
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.endif
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.endif
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CFLAGS+=-DFLAGS=${BOOT_BOOT0_FLAGS} \
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-DTICKS=${BOOT_BOOT0_TICKS} \
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-DCOMSPEED=${BOOT_BOOT0_COMCONSOLE_SPEED}
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LDFLAGS=-N -e start -Ttext ${BOOT_BOOT0_ORG} -Wl,-S,--oformat,binary
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.include <bsd.prog.mk>
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