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         ${CLANG_OPT_SMALL}
  45
  46 LDFLAGS=-static -N --gc-sections
  47
  48 # Pick up ../Makefile.inc early.
  49 .include <bsd.init.mk>
  50
  51 CLEANFILES=     boot
  52
  53 boot: boot1 boot2
  54         cat boot1 boot2 > boot
  55
  56 CLEANFILES+=    boot1 boot1.out boot1.o
  57
  58 boot1: boot1.out
  59         objcopy -S -O binary boot1.out ${.TARGET}
  60
  61 boot1.out: boot1.o
  62         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  63
  64 CLEANFILES+=    boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
  65                 boot2.s boot2.s.tmp boot2.h sio.o
  66
  67 boot2: boot2.ld
  68         @set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
  69             echo "$$x bytes available"; test $$x -ge 0
  70         dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
  71
  72 boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
  73         btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
  74             -o ${.TARGET} -P 1 boot2.bin
  75
  76 boot2.ldr:
  77         dd if=/dev/zero of=${.TARGET} bs=512 count=1
  78
  79 boot2.bin: boot2.out
  80         objcopy -S -O binary boot2.out ${.TARGET}
  81
  82 boot2.out: ${BTXCRT} boot2.o sio.o
  83         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
  84
  85 boot2.o: boot2.s
  86         ${CC} ${ACFLAGS} -c boot2.s
  87
  88 SRCS=   boot2.c boot2.h
  89
  90 boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
  91         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
  92         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
  93         rm -f boot2.s.tmp
  94
  95 boot2.h: boot1.out
  96         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
  97             { x = $$1 - ORG1; \
  98             printf("#define XREADORG %#x\n", REL1 + x) }' \
  99             ORG1=`printf "%d" ${ORG1}` \
 100             REL1=`printf "%d" ${REL1}` > ${.TARGET}
 101
 102 .if ${MACHINE_CPUARCH} == "amd64"
 103 beforedepend boot2.s: machine
 104 CLEANFILES+=    machine
 105 machine:
 106         ln -sf ${.CURDIR}/../../../i386/include machine
 107 .endif
 108
 109 .include <bsd.prog.mk>
 110
 111 # XXX: clang integrated-as doesn't grok .codeNN directives yet
 112 CFLAGS.boot1.S=         ${CLANG_NO_IAS}
 113 CFLAGS+=                ${CFLAGS.${.IMPSRC:T}}