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 .PATH: ${.CURDIR}/../../common
  15 .PATH: ${.CURDIR}/../../../../lib/libstand
  16
  17 # A value of 0x80 enables LBA support.
  18 B1FLAGS=        0x80
  19
  20 BOOT_COMCONSOLE_PORT?= 0x3f8
  21 BOOT_COMCONSOLE_SPEED?= 9600
  22 B2SIOFMT?=      0x3
  23
  24 .if exists(${.OBJDIR}/../btx)
  25 BTX=    ${.OBJDIR}/../btx
  26 .else
  27 BTX=    ${.CURDIR}/../btx
  28 .endif
  29
  30 # These origins are taken from bootasm.h.
  31 #
  32 REL1 = `${.OBJDIR}/bootasmdef.nx BOOT1_ORIGIN`
  33 REL1D = `${.OBJDIR}/bootasmdef.nx -d BOOT1_ORIGIN`
  34 ORG1 = `${.OBJDIR}/bootasmdef.nx MEM_BIOS_LADDR`
  35 ORG1D = `${.OBJDIR}/bootasmdef.nx -d MEM_BIOS_LADDR`
  36
  37 # WARNING!  The ORG2 calculation is the origin of boot2.bin relative to
  38 # the start of the BTX *USER* address space, not the start of physical
  39 # memory.
  40 #
  41 ORG2=   `${.OBJDIR}/bootasmdef.nx BOOT2_VORIGIN`
  42
  43 # gcc3.x
  44 #       -fno-guess-branch-probability
  45 #       -mno-align-long-strings
  46 CFLAGS= -elf -ffreestanding -Os -fno-builtin \
  47         -fomit-frame-pointer \
  48         -std=c99 \
  49         -DBOOT2 \
  50         -I${.CURDIR}/../../common \
  51         -I${.CURDIR}/../../../../lib/libstand \
  52         -I${.CURDIR}/../btx/lib -I. \
  53         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
  54         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  55         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings
  56
  57 DEBUG_FLAGS=
  58
  59 # Tell gcc that it shouldn't do fancy optimizations for newer processors.
  60 # Otherwise it winds up creating larger code and we won't be able to fit boot2.
  61 CFLAGS+= -march=i386
  62
  63 # Unfortunately, unit-at-a-time creates issues as yet
  64 # not tracked down, in boot2, so we have to turn it off.  Note that
  65 # the problem has been narrowed down to the 'boot2' code.  The /boot/loader
  66 # doesn't seem to have a problem.
  67 #
  68 CFLAGS+= -fno-unit-at-a-time
  69
  70 # boot2 area in 32 bit disklabel is 16 sectors (8K)
  71 #
  72 # boot2 area in 64 bit disklabel is 64 sectors (32K).
  73 # However, the boot1 btx loader puts boot2 at a physical address
  74 # of MEM_BTX_USR+BOOT2_VORIGIN which is typically 0xC000, so we
  75 # cannot make boot2 any larger then 16KB or we overflow the segment.
  76 #
  77 NSECT_32?=      16
  78 NSECT_64?=      30
  79 LDFLAGS=-nostdlib -static -N --gc-sections
  80
  81 all: boot
  82
  83 boot: boot1_32 boot2_32
  84         cat ${.ALLSRC} > boot
  85
  86 .for s in _32 _64
  87
  88 _ADDCFLAGS$s:= -DNSECT=${NSECT$s}
  89 _ts=    $s
  90 .if ${_ts} == "_64"
  91 _ADDCFLAGS$s+= -DDISKLABEL64
  92 _ADDCFLAGS$s+= -DHAMMERFS -DUFS
  93 _ADDOBJS$s+= hammerread$s.o ufsread$s.o
  94 .else
  95 _ADDCFLAGS$s+= -DUFS -DUFS1_ONLY
  96 _ADDOBJS$s+= ufsread$s.o
  97 .endif
  98
  99 all: boot1$s boot2$s
 100
 101 boot1$s: boot1$s.out
 102         objcopy -S -O binary boot1$s.out ${.TARGET}
 103
 104 boot1$s.out: boot1$s.o bootasmdef.nx
 105         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} ${.ALLSRC:M*.o}
 106
 107 boot1$s.o: boot1.S
 108         ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -DFLAGS=${B1FLAGS} \
 109                 ${.ALLSRC} -o ${.TARGET} -c
 110
 111 boot2$s.o: boot2.c ${.CURDIR}/../../common/ufsread.c ${.CURDIR}/../../../../lib/libstand/hammerread.c
 112         ${CC} ${CFLAGS} ${_ADDCFLAGS$s} -S -o boot2$s.s.tmp ${.CURDIR}/boot2.c
 113         sed -e '/align/d' -e '/nop/d' < boot2$s.s.tmp > boot2$s.s
 114         rm -f boot2$s.s.tmp
 115         ${AS} ${AFLAGS} -o boot2$s.o boot2$s.s
 116
 117 boot2$s.h: boot1$s.out bootasmdef.nx
 118         @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
 119         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
 120                 { x = $$1 - ORG1; \
 121                 printf("#define XREADORG %#x\n", REL1 + x) }' \
 122                 ORG1=${ORG1D} REL1=${REL1D} > boot2$s.h
 123
 124 boot2$s: boot2$s.ldr boot2$s.bin ${BTX}/btx/btx
 125         btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2$s.ldr \
 126                 -o boot2$s.ld -P 1 boot2$s.bin
 127         stat boot2$s.ld | awk '{ x = (${NSECT$s} - 1) * 512 - $$8; \
 128                 print x " bytes available"; if (x < 0) exit 1 }'
 129         dd if=boot2$s.ld of=${.TARGET} obs=$$(( (${NSECT$s} - 1) * 512)) conv=osync 2>/dev/null
 130
 131 boot2$s.ldr:
 132         dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
 133
 134 boot2$s.bin: boot2$s.out
 135         objcopy -S -O binary boot2$s.out ${.TARGET}
 136
 137 boot2$s.out: boot2$s.o sio.o ${_ADDOBJS$s}
 138         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
 139                 ${BTX}/lib/crt0.o ${.ALLSRC}
 140
 141 boot2$s.o: boot2$s.h
 142
 143 CLEANFILES+=    boot1$s boot1$s.out boot1$s.o \
 144                 boot2$s boot2$s.ldr boot2$s.bin \
 145                 boot2$s.ld boot2$s.out boot2$s.o boot2$s.h boot2$s.s \
 146                 ${_ADDOBJS$s}
 147
 148 hammerread$s.o: hammerread.c
 149         ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
 150
 151 ufsread$s.o: ufsread.c
 152         ${CC} ${CFLAGS} ${_ADDCFLAGS$s} ${.ALLSRC} -o ${.TARGET} -c
 153
 154 .endfor
 155
 156 sio.o: sio.S
 157         ${CC} ${CFLAGS} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
 158                 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
 159                 ${.ALLSRC} -o ${.TARGET} -c
 160
 161 install:
 162         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 163                 boot ${DESTDIR}${BINDIR}/boot
 164         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 165                 boot1_32 ${DESTDIR}${BINDIR}/boot1
 166         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 167                 boot2_32 ${DESTDIR}${BINDIR}/boot2
 168         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 169                 boot1_64 ${DESTDIR}${BINDIR}/boot1_64
 170         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 171                 boot2_64 ${DESTDIR}${BINDIR}/boot2_64
 172
 173 .include <bsd.prog.mk>
 174
 175 .if defined(REALLY_AMD64)
 176 # For amd64, we need to fake up a complete machine/ tree
 177 # so that types for -m32 appear correctly.
 178
 179 boot2.o: machine
 180
 181 beforedepend ${OBJS}: machine cpu
 182
 183 machine::
 184         mkdir -p machine
 185         ${LN} -sf ${.CURDIR}/../../../cpu/i386/include/* machine
 186         ${LN} -sf ${.CURDIR}/../../../platform/pc32/include/* machine
 187
 188 cpu::
 189         ${LN} -hsf ${.CURDIR}/../../../cpu/i386/include cpu
 190
 191 CLEANDIRS+=     machine cpu
 192 .endif
 193
 194 CLEANFILES+=    bootasmdef.nx
 195