sys/boot/i386/boot2/Makefile

   1 # $FreeBSD$
   2
   3 .include <bsd.own.mk>
   4
   5 FILES=          boot boot1 boot2
   6
   7 NM?=            nm
   8
   9 # A value of 0x80 enables LBA support.
  10 BOOT_BOOT1_FLAGS?=      0x80
  11
  12 BOOT_COMCONSOLE_PORT?= 0x3f8
  13 BOOT_COMCONSOLE_SPEED?= 9600
  14 B2SIOFMT?=      0x3
  15
  16 REL1=   0x700
  17 ORG1=   0x7c00
  18 ORG2=   0x2000
  19
  20 # Decide level of UFS support.
  21 BOOT2_UFS?=     UFS1_AND_UFS2
  22 #BOOT2_UFS?=    UFS2_ONLY
  23 #BOOT2_UFS?=    UFS1_ONLY
  24
  25 CFLAGS= -Os \
  26         -fomit-frame-pointer \
  27         -mrtd \
  28         -mregparm=3 \
  29         -DUSE_XREAD \
  30         -D${BOOT2_UFS} \
  31         -DFLAGS=${BOOT_BOOT1_FLAGS} \
  32         -DSIOPRT=${BOOT_COMCONSOLE_PORT} \
  33         -DSIOFMT=${B2SIOFMT} \
  34         -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
  35         -I${.CURDIR}/../../common \
  36         -I${.CURDIR}/../btx/lib -I. \
  37         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
  38         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  39         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
  40         -Winline \
  41         ${CLANG_OPT_SMALL}
  42
  43 CFLAGS.gcc+=    -fno-guess-branch-probability \
  44                 -fno-unit-at-a-time \
  45                 --param max-inline-insns-single=100
  46 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201
  47 CFLAGS.gcc+=   -mno-align-long-strings
  48 .endif
  49
  50 LD_FLAGS=-static -N --gc-sections
  51
  52 # Pick up ../Makefile.inc early.
  53 .include <bsd.init.mk>
  54
  55 CLEANFILES=     boot
  56
  57 boot: boot1 boot2
  58         cat boot1 boot2 > boot
  59
  60 CLEANFILES+=    boot1 boot1.out boot1.o
  61
  62 boot1: boot1.out
  63         ${OBJCOPY} -S -O binary boot1.out ${.TARGET}
  64
  65 boot1.out: boot1.o
  66         ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  67
  68 CLEANFILES+=    boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
  69                 boot2.s boot2.s.tmp boot2.h sio.o
  70
  71 boot2: boot2.ld
  72         @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
  73             echo "$$x bytes available"; test $$x -ge 0
  74         dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
  75
  76 boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
  77         btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
  78             -o ${.TARGET} -P 1 boot2.bin
  79
  80 boot2.ldr:
  81         dd if=/dev/zero of=${.TARGET} bs=512 count=1
  82
  83 boot2.bin: boot2.out
  84         ${OBJCOPY} -S -O binary boot2.out ${.TARGET}
  85
  86 boot2.out: ${BTXCRT} boot2.o sio.o
  87         ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
  88
  89 boot2.o: boot2.s
  90         ${CC} ${ACFLAGS} -c boot2.s
  91
  92 SRCS=   boot2.c boot2.h
  93
  94 boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
  95         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
  96         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
  97         rm -f boot2.s.tmp
  98
  99 boot2.h: boot1.out
 100         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
 101             { x = $$1 - ORG1; \
 102             printf("#define XREADORG %#x\n", REL1 + x) }' \
 103             ORG1=`printf "%d" ${ORG1}` \
 104             REL1=`printf "%d" ${REL1}` > ${.TARGET}
 105
 106 .if ${MACHINE_CPUARCH} == "amd64"
 107 beforedepend boot2.s: machine
 108 CLEANFILES+=    machine
 109 machine:
 110         ln -sf ${.CURDIR}/../../../i386/include machine
 111 .endif
 112
 113 .include <bsd.prog.mk>
 114
 115 # XXX: clang integrated-as doesn't grok .codeNN directives yet
 116 CFLAGS.boot1.S=         ${CLANG_NO_IAS}
 117 CFLAGS+=                ${CFLAGS.${.IMPSRC:T}}