sys/boot/pc32/boot2/Makefile

   1 # $FreeBSD: src/sys/boot/i386/boot2/Makefile,v 1.47 2003/06/26 03:51:57 peter Exp $
   2 # $DragonFly: src/sys/boot/pc32/boot2/Makefile,v 1.18 2008/09/13 11:45:45 corecode Exp $
   3
   4 BINDIR?=        /boot
   5 BINMODE=        444
   6 CLEANFILES=     boot \
   7                 sio.o
   8
   9 NM?=            nm
  10 NXCFLAGS=
  11 NXLDFLAGS=
  12
  13 .PATH: ${.CURDIR}/..
  14
  15 # A value of 0x80 enables LBA support.
  16 B1FLAGS=        0x80
  17
  18 BOOT_COMCONSOLE_PORT?= 0x3f8
  19 BOOT_COMCONSOLE_SPEED?= 9600
  20 B2SIOFMT?=      0x3
  21
  22 .if exists(${.OBJDIR}/../btx)
  23 BTX=    ${.OBJDIR}/../btx
  24 .else
  25 BTX=    ${.CURDIR}/../btx
  26 .endif
  27
  28 # These origins are taken from bootasm.h.
  29 #
  30 REL1 = `${.OBJDIR}/bootasmdef.nx BOOT1_ORIGIN`
  31 REL1D = `${.OBJDIR}/bootasmdef.nx -d BOOT1_ORIGIN`
  32 ORG1 = `${.OBJDIR}/bootasmdef.nx MEM_BIOS_LADDR`
  33 ORG1D = `${.OBJDIR}/bootasmdef.nx -d MEM_BIOS_LADDR`
  34
  35 # WARNING!  The ORG2 calculation is the origin of boot2.bin relative to
  36 # the start of the BTX *USER* address space, not the start of physical
  37 # memory.
  38 #
  39 ORG2=   `${.OBJDIR}/bootasmdef.nx BOOT2_VORIGIN`
  40
  41 # gcc3.x
  42 #       -fno-guess-branch-probability
  43 #       -mno-align-long-strings
  44 CFLAGS= -elf -ffreestanding -Os -fno-builtin \
  45         -fomit-frame-pointer \
  46         -std=c99 \
  47         -DBOOT2 \
  48         -I${.CURDIR}/../../common \
  49         -I${.CURDIR}/../../../../lib/libstand \
  50         -I${.CURDIR}/../btx/lib -I. \
  51         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
  52         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  53         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
  54         -D__BOOT2_HACK
  55
  56 # Tell gcc that it shouldn't do fancy optimizations for newer processors.
  57 # Otherwise it winds up creating larger code and we won't be able to fit boot2.
  58 CFLAGS+= -march=i386
  59
  60 # Unfortunately, unit-at-a-time creates issues as yet
  61 # not tracked down, in boot2, so we have to turn it off.  Note that
  62 # the problem has been narrowed down to the 'boot2' code.  The /boot/loader
  63 # doesn't seem to have a problem.
  64 #
  65 CFLAGS+= -fno-unit-at-a-time
  66
  67 # Disable propolice on gcc that supports it
  68 .if ${CCVER} == "gcc34"
  69 CFLAGS+= -fno-stack-protector
  70 .endif
  71
  72 NSECT_32?=      16
  73 NSECT_64?=      18
  74 LDFLAGS=-nostdlib -static -N --gc-sections
  75
  76 all: boot
  77
  78 boot: boot1_32 boot2_32
  79         cat ${.ALLSRC} > boot
  80
  81 .for s in _32 _64
  82
  83 _ADDCFLAGS$s:= -DNSECT=${NSECT$s}
  84 _ts=    $s
  85 .if ${_ts} == "_64"
  86 _ADDCFLAGS$s+= -DDISKLABEL64
  87 _ADDCFLAGS$s+= -DHAMMERFS
  88 .else
  89 _ADDCFLAGS$s+= -DUFS1_ONLY
  90 .endif
  91
  92 all: boot1$s boot2$s
  93
  94 boot1$s: boot1$s.out
  95         objcopy -S -O binary boot1$s.out ${.TARGET}
  96
  97 boot1$s.out: boot1$s.o bootasmdef.nx
  98         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} ${.ALLSRC:M*.o}
  99
 100 boot1$s.o: boot1.S
 101         ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -DFLAGS=${B1FLAGS} \
 102                 ${.ALLSRC} -o ${.TARGET} -c
 103
 104 boot2$s.o: boot2.c ${.CURDIR}/../../common/ufsread.c ${.CURDIR}/../../../../lib/libstand/hammerread.c
 105         ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -S -o boot2$s.s.tmp ${.CURDIR}/boot2.c
 106         sed -e '/align/d' -e '/nop/d' < boot2$s.s.tmp > boot2$s.s
 107         rm -f boot2$s.s.tmp
 108         ${AS} ${AFLAGS} -o boot2$s.o boot2$s.s
 109
 110 boot2$s.h: boot1$s.out bootasmdef.nx
 111         @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
 112         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
 113                 { x = $$1 - ORG1; \
 114                 printf("#define XREADORG %#x\n", REL1 + x) }' \
 115                 ORG1=${ORG1D} REL1=${REL1D} > boot2$s.h
 116
 117 boot2$s: boot2$s.ldr boot2$s.bin ${BTX}/btx/btx
 118         btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2$s.ldr \
 119                 -o boot2$s.ld -P 1 boot2$s.bin
 120         stat boot2$s.ld | awk '{ x = (${NSECT$s} - 1) * 512 - $$8; \
 121                 print x " bytes available"; if (x < 0) exit 1 }'
 122         dd if=boot2$s.ld of=${.TARGET} obs=$$(( (${NSECT$s} - 1) * 512)) conv=osync 2>/dev/null
 123
 124 boot2$s.ldr:
 125         dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
 126
 127 boot2$s.bin: boot2$s.out
 128         objcopy -S -O binary boot2$s.out ${.TARGET}
 129
 130 boot2$s.out: boot2$s.o sio.o
 131         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
 132                 ${BTX}/lib/crt0.o ${.ALLSRC}
 133
 134 boot2$s.o: boot2$s.h
 135
 136 CLEANFILES+=    boot1$s boot1$s.out boot1$s.o \
 137                 boot2$s boot2$s.ldr boot2$s.bin boot2$s.ld boot2$s.out boot2$s.o boot2$s.h boot2$s.s
 138
 139 .endfor
 140
 141 sio.o: sio.S
 142         ${CC} ${CFLAGS} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
 143                 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
 144                 ${.ALLSRC} -o ${.TARGET} -c
 145
 146 install:
 147         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 148                 boot ${DESTDIR}${BINDIR}/boot
 149         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 150                 boot1_32 ${DESTDIR}${BINDIR}/boot1
 151         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 152                 boot2_32 ${DESTDIR}${BINDIR}/boot2
 153         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 154                 boot1_64 ${DESTDIR}${BINDIR}/boot1_64
 155         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 156                 boot2_64 ${DESTDIR}${BINDIR}/boot2_64
 157
 158 .include <bsd.prog.mk>
 159
 160 .if defined(REALLY_AMD64)
 161 # For amd64, we need to fake up a complete machine/ tree
 162 # so that types for -m32 appear correctly.
 163
 164 boot2.o: machine
 165
 166 beforedepend ${OBJS}: machine cpu
 167
 168 machine::
 169         mkdir -p machine
 170         ${LN} -sf ${.CURDIR}/../../../cpu/i386/include/* machine
 171         ${LN} -sf ${.CURDIR}/../../../platform/pc32/include/* machine
 172
 173 cpu::
 174         ${LN} -sf ${.CURDIR}/../../../cpu/i386/include cpu
 175
 176 CLEANDIRS+=     machine cpu
 177 .endif
 178
 179 CLEANFILES+=    bootasmdef.nx
 180