sys/boot/i386/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/i386/boot2/Makefile,v 1.17 2006/08/12 07:42:26 swildner Exp $
   3
   4 PROG=           boot2
   5 NOMAN=
   6 STRIP=
   7 BINDIR?=        /boot
   8 BINMODE=        444
   9 CLEANFILES=     boot boot1 boot1.out boot1.o \
  10                 boot2.ldr boot2.bin boot2.ld boot2.out boot2.o boot2.h \
  11                 boot2.s sio.o
  12
  13 NM?=            nm
  14 NXCFLAGS=
  15 NXLDFLAGS=
  16
  17 .PATH: ${.CURDIR}/..
  18
  19 # A value of 0x80 enables LBA support.
  20 B1FLAGS=        0x80
  21
  22 BOOT_COMCONSOLE_PORT?= 0x3f8
  23 BOOT_COMCONSOLE_SPEED?= 9600
  24 B2SIOFMT?=      0x3
  25
  26 .if exists(${.OBJDIR}/../btx)
  27 BTX=    ${.OBJDIR}/../btx
  28 .else
  29 BTX=    ${.CURDIR}/../btx
  30 .endif
  31
  32 # These origins are taken from bootasm.h.
  33 #
  34 REL1 = `${.OBJDIR}/bootasmdef.nx BOOT1_ORIGIN`
  35 REL1D = `${.OBJDIR}/bootasmdef.nx -d BOOT1_ORIGIN`
  36 ORG1 = `${.OBJDIR}/bootasmdef.nx MEM_BIOS_LADDR`
  37 ORG1D = `${.OBJDIR}/bootasmdef.nx -d MEM_BIOS_LADDR`
  38
  39 # WARNING!  The ORG2 calculation is the origin of boot2.bin relative to
  40 # the start of the BTX *USER* address space, not the start of physical
  41 # memory.
  42 #
  43 ORG2=   `${.OBJDIR}/bootasmdef.nx BOOT2_VORIGIN`
  44
  45 # Decide Level of UFS support.  UFS1_AND_UFS2 doesn't fit.
  46
  47 # BOOT2_UFS?=   UFS2_ONLY
  48 #BOOT2_UFS?=    UFS1_AND_UFS2
  49 BOOT2_UFS?=     UFS1_ONLY
  50
  51 # gcc3.x
  52 #       -fno-guess-branch-probability
  53 #       -mno-align-long-strings
  54 CFLAGS= -elf -ffreestanding -Os -fno-builtin \
  55         -fomit-frame-pointer \
  56         -D${BOOT2_UFS} \
  57         -I${.CURDIR}/../../common \
  58         -I${.CURDIR}/../btx/lib -I. \
  59         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
  60         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  61         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
  62         -D__BOOT2_HACK
  63
  64 # Unfortunately, unit-at-a-time creates issues as yet
  65 # not tracked down, in boot2, so we have to turn it off.  Note that
  66 # the problem has been narrowed down to the 'boot2' code.  The /boot/loader
  67 # doesn't seem to have a problem.
  68 #
  69 CFLAGS+= -fno-unit-at-a-time
  70
  71 # Disable propolice on gcc that supports it
  72 .if ${CCVER} == "gcc34"
  73 CFLAGS+= -fno-stack-protector
  74 .endif
  75
  76 LDFLAGS=-nostdlib -static -N --gc-sections
  77
  78 all: boot1 boot2 boot
  79
  80 boot: boot1 boot2
  81         cat boot1 boot2 > boot
  82
  83 boot1: boot1.out
  84         objcopy -S -O binary boot1.out ${.TARGET}
  85
  86 boot1.out: boot1.o bootasmdef.nx
  87         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  88
  89 boot1.o: boot1.S
  90         ${CC} ${CFLAGS} -DFLAGS=${B1FLAGS} ${AFLAGS} \
  91                 ${.IMPSRC} -o ${.TARGET} -c
  92
  93 boot2.o: boot2.c ${.CURDIR}/../../common/ufsread.c
  94         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.IMPSRC}
  95         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
  96         rm -f boot2.s.tmp
  97         ${AS} ${AFLAGS} -o boot2.o boot2.s
  98
  99 boot2.h: boot1.out bootasmdef.nx
 100         @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
 101         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
 102                 { x = $$1 - ORG1; \
 103                 printf("#define XREADORG %#x\n", REL1 + x) }' \
 104                 ORG1=${ORG1D} REL1=${REL1D} > boot2.h
 105
 106 boot2: boot2.ldr boot2.bin ${BTX}/btx/btx
 107         btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2.ldr \
 108                 -o boot2.ld -P 1 boot2.bin
 109         @stat boot2.ld | awk '{ x = 7680 - $$8; \
 110                 print x " bytes available"; if (x < 0) exit 1 }'
 111         dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync 2>/dev/null
 112
 113 boot2.ldr:
 114         dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
 115
 116 boot2.bin: boot2.out
 117         objcopy -S -O binary boot2.out ${.TARGET}
 118
 119 boot2.out: boot2.o sio.o
 120         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
 121                 ${BTX}/lib/crt0.o ${.ALLSRC}
 122
 123 boot2.o: boot2.h
 124
 125 sio.o: sio.S
 126         ${CC} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
 127                 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} ${AFLAGS} \
 128                 ${.IMPSRC} -o ${.TARGET} -c
 129
 130 install:
 131         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 132                 boot ${DESTDIR}${BINDIR}/boot
 133         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 134                 boot1 ${DESTDIR}${BINDIR}/boot1
 135         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 136                 boot2 ${DESTDIR}${BINDIR}/boot2
 137
 138 .include <bsd.prog.mk>
 139
 140 .if defined(REALLY_AMD64)
 141 boot2.o: machine
 142
 143 beforedepend ${OBJS}: machine
 144
 145 machine:
 146         ${LN} -sf ${.CURDIR}/../../../i386/include machine
 147
 148 CLEANFILES+=    machine
 149 .endif
 150
 151 CLEANFILES+=    bootasmdef.nx
 152