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         -fno-guess-branch-probability \
  27         -fomit-frame-pointer \
  28         -fno-unit-at-a-time \
  29         -mno-align-long-strings \
  30         -mrtd \
  31         -mregparm=3 \
  32         -DUSE_XREAD \
  33         -D${BOOT2_UFS} \
  34         -DFLAGS=${BOOT_BOOT1_FLAGS} \
  35         -DSIOPRT=${BOOT_COMCONSOLE_PORT} \
  36         -DSIOFMT=${B2SIOFMT} \
  37         -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
  38         -I${.CURDIR}/../../common \
  39         -I${.CURDIR}/../btx/lib -I. \
  40         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
  41         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  42         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
  43         -Winline --param max-inline-insns-single=100
  44
  45 .if ${CC:T:Mclang} == "clang"
  46 CFLAGS+=        -mllvm -stack-alignment=8 -mllvm -inline-threshold=3 \
  47                 -mllvm -enable-load-pre=false
  48 # XXX: clang integrated-as doesn't grok .codeNN directives yet
  49 CFLAGS+=        ${.IMPSRC:T:Mboot1.S:C/^.+$/-no-integrated-as/}
  50 .endif
  51
  52 LDFLAGS=-static -N --gc-sections
  53
  54 # Pick up ../Makefile.inc early.
  55 .include <bsd.init.mk>
  56
  57 CLEANFILES=     boot
  58
  59 boot: boot1 boot2
  60         cat boot1 boot2 > boot
  61
  62 CLEANFILES+=    boot1 boot1.out boot1.o
  63
  64 boot1: boot1.out
  65         objcopy -S -O binary boot1.out ${.TARGET}
  66
  67 boot1.out: boot1.o
  68         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  69
  70 CLEANFILES+=    boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
  71                 boot2.s boot2.s.tmp boot2.h sio.o
  72
  73 boot2: boot2.ld
  74         @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
  75             echo "$$x bytes available"; test $$x -ge 0
  76         dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
  77
  78 boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
  79         btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
  80             -o ${.TARGET} -P 1 boot2.bin
  81
  82 boot2.ldr:
  83         dd if=/dev/zero of=${.TARGET} bs=512 count=1
  84
  85 boot2.bin: boot2.out
  86         objcopy -S -O binary boot2.out ${.TARGET}
  87
  88 boot2.out: ${BTXCRT} boot2.o sio.o
  89         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
  90
  91 boot2.o: boot2.s
  92 .if ${CC:T:Mclang} == "clang"
  93         ${CC} ${ACFLAGS} -c boot2.s
  94 .endif
  95
  96 SRCS=   boot2.c boot2.h
  97
  98 boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
  99         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
 100         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
 101         rm -f boot2.s.tmp
 102
 103 boot2.h: boot1.out
 104         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
 105             { x = $$1 - ORG1; \
 106             printf("#define XREADORG %#x\n", REL1 + x) }' \
 107             ORG1=`printf "%d" ${ORG1}` \
 108             REL1=`printf "%d" ${REL1}` > ${.TARGET}
 109
 110 .if ${MACHINE_CPUARCH} == "amd64"
 111 beforedepend boot2.s: machine
 112 CLEANFILES+=    machine
 113 machine:
 114         ln -sf ${.CURDIR}/../../../i386/include machine
 115 .endif
 116
 117 .include <bsd.prog.mk>