# $FreeBSD$ PROG?= boot0 STRIP= BINMODE=${NOBINMODE} 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 += ${OPTS} # Flags used in the boot0.S code: # 0x0f all valid partitions enabled. # 0x80 'packet', use BIOS EDD (LBA) extensions instead of CHS # to read from disk. boot0.S does not check that the extensions # are supported, but all modern BIOSes should have them. # 0x40 'noupdate', disable writing boot0 back to disk so that # the current selection is not preserved across reboots. # 0x20 'setdrv', override the drive number supplied by the bios # with the one in the boot sector. # Default boot flags: BOOT_BOOT0_FLAGS?= 0x8f # The number of timer ticks to wait for a keypress before assuming the default # selection. Since there are 18.2 ticks per second, the default value of # 0xb6 (182d) corresponds to 10 seconds. BOOT_BOOT0_TICKS?= 0xb6 # The base address that we the boot0 code to to run it. Don't change this # unless you are glutton for punishment. BOOT_BOOT0_ORG?= 0x600 ORG=${BOOT_BOOT0_ORG} # 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+=${LDFLAGS_BIN} .include <bsd.prog.mk> |