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                 -mno-align-long-strings \
  46                 --param max-inline-insns-single=100
  47
  48 LD_FLAGS=-static -N --gc-sections
  49
  50 # Pick up ../Makefile.inc early.
  51 .include <bsd.init.mk>
  52
  53 CLEANFILES=     boot
  54
  55 boot: boot1 boot2
  56         cat boot1 boot2 > boot
  57
  58 CLEANFILES+=    boot1 boot1.out boot1.o
  59
  60 boot1: boot1.out
  61         objcopy -S -O binary boot1.out ${.TARGET}
  62
  63 boot1.out: boot1.o
  64         ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  65
  66 CLEANFILES+=    boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
  67                 boot2.s boot2.s.tmp boot2.h sio.o
  68
  69 boot2: boot2.ld
  70         @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
  71             echo "$$x bytes available"; test $$x -ge 0
  72         dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
  73
  74 boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
  75         btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
  76             -o ${.TARGET} -P 1 boot2.bin
  77
  78 boot2.ldr:
  79         dd if=/dev/zero of=${.TARGET} bs=512 count=1
  80
  81 boot2.bin: boot2.out
  82         objcopy -S -O binary boot2.out ${.TARGET}
  83
  84 boot2.out: ${BTXCRT} boot2.o sio.o
  85         ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
  86
  87 boot2.o: boot2.s
  88         ${CC} ${ACFLAGS} -c boot2.s
  89
  90 SRCS=   boot2.c boot2.h
  91
  92 boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
  93         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
  94         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
  95         rm -f boot2.s.tmp
  96
  97 boot2.h: boot1.out
  98         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
  99             { x = $$1 - ORG1; \
 100             printf("#define XREADORG %#x\n", REL1 + x) }' \
 101             ORG1=`printf "%d" ${ORG1}` \
 102             REL1=`printf "%d" ${REL1}` > ${.TARGET}
 103
 104 .if ${MACHINE_CPUARCH} == "amd64"
 105 beforedepend boot2.s: machine
 106 CLEANFILES+=    machine
 107 machine:
 108         ln -sf ${.CURDIR}/../../../i386/include machine
 109 .endif
 110
 111 .include <bsd.prog.mk>
 112
 113 # XXX: clang integrated-as doesn't grok .codeNN directives yet
 114 CFLAGS.boot1.S=         ${CLANG_NO_IAS}
 115 CFLAGS+=                ${CFLAGS.${.IMPSRC:T}}