| # $FreeBSD$ |
| |
| PROG?= boot0 |
| STRIP= |
| BINMODE=${NOBINMODE} |
| 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=-e start -Ttext ${BOOT_BOOT0_ORG} -Wl,-N,-S,--oformat,binary |
| |
| .include <bsd.prog.mk> |
| |
| # XXX: clang integrated-as doesn't grok .codeNN directives yet |
| CFLAGS.boot0.S= ${CLANG_NO_IAS} |
| CFLAGS+= ${CFLAGS.${.IMPSRC:T}} |