37 lines
1.2 KiB
Makefile
37 lines
1.2 KiB
Makefile
# $FreeBSD$
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PROG?= boot0
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STRIP=
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BINMODE=${NOBINMODE}
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NOMAN=
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SRCS= ${PROG}.S
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# The default set of flags compiled into boot0. This enables update (writing
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# the modified boot0 back to disk after running so that the selection made is
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# saved), packet mode (detect and use the BIOS EDD extensions if we try to
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# boot past the 1024 cylinder liimt), and booting from all valid slices.
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BOOT_BOOT0_FLAGS?= 0xf
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# The number of timer ticks to wait for a keypress before assuming the default
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# selection. Since there are 18.2 ticks per second, the default value of
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# 0xb6 (182d) corresponds to 10 seconds.
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BOOT_BOOT0_TICKS?= 0xb6
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# The base address that we the boot0 code to to run it. Don't change this
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# unless you are glutton for punishment.
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BOOT_BOOT0_ORG?= 0x600
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# Comm settings for boot0sio. 0xE3 => 9600 8-N-1
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# XXX: We should create a build-tool or something to convert BOOT_CONSOLE_SPEED
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# and BOOT_COMCONSOLE_PORT into the correct values to define on the build
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# command line
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BOOT_BOOT0_COMCONSOLE_SPEED?= 0xE3
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CFLAGS+=-DFLAGS=${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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