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 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 #BOOT2_UFS?=    HAMMERFS
  51
  52 # gcc3.x
  53 #       -fno-guess-branch-probability
  54 #       -mno-align-long-strings
  55 CFLAGS= -elf -ffreestanding -Os -fno-builtin \
  56         -fomit-frame-pointer \
  57         -std=c99 \
  58         -DBOOT2 \
  59         -D${BOOT2_UFS} \
  60         -I${.CURDIR}/../../common \
  61         -I${.CURDIR}/../../../../lib/libstand \
  62         -I${.CURDIR}/../btx/lib -I. \
  63         -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
  64         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  65         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
  66         -D__BOOT2_HACK
  67
  68 # Unfortunately, unit-at-a-time creates issues as yet
  69 # not tracked down, in boot2, so we have to turn it off.  Note that
  70 # the problem has been narrowed down to the 'boot2' code.  The /boot/loader
  71 # doesn't seem to have a problem.
  72 #
  73 CFLAGS+= -fno-unit-at-a-time
  74
  75 # Disable propolice on gcc that supports it
  76 .if ${CCVER} == "gcc34"
  77 CFLAGS+= -fno-stack-protector
  78 .endif
  79
  80 NSECT?= 16
  81 CFLAGS+= -DNSECT=${NSECT}
  82
  83 LDFLAGS=-nostdlib -static -N --gc-sections
  84
  85 all: boot1 boot2 boot
  86
  87 boot: boot1 boot2
  88         cat boot1 boot2 > boot
  89
  90 boot1: boot1.out
  91         objcopy -S -O binary boot1.out ${.TARGET}
  92
  93 boot1.out: boot1.o bootasmdef.nx
  94         ${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  95
  96 boot1.o: boot1.S
  97         ${CC} ${CFLAGS} -DFLAGS=${B1FLAGS} \
  98                 ${.IMPSRC} -o ${.TARGET} -c
  99
 100 boot2.o: boot2.c ${.CURDIR}/../../common/ufsread.c ${.CURDIR}/../../../../lib/libstand/hammerread.c
 101         ${CC} ${CFLAGS} -S -o boot2.s.tmp ${.IMPSRC}
 102         sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
 103         rm -f boot2.s.tmp
 104         ${AS} ${AFLAGS} -o boot2.o boot2.s
 105
 106 boot2.h: boot1.out bootasmdef.nx
 107         @echo "NOTE: boot2 using xread from boot1 at ${REL1}"
 108         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
 109                 { x = $$1 - ORG1; \
 110                 printf("#define XREADORG %#x\n", REL1 + x) }' \
 111                 ORG1=${ORG1D} REL1=${REL1D} > boot2.h
 112
 113 boot2: boot2.ldr boot2.bin ${BTX}/btx/btx
 114         btxld -v -E ${ORG2} -f bin -b ${BTX}/btx/btx -l boot2.ldr \
 115                 -o boot2.ld -P 1 boot2.bin
 116         stat boot2.ld | awk '{ x = (${NSECT} - 1) * 512 - $$8; \
 117                 print x " bytes available"; if (x < 0) exit 1 }'
 118         dd if=boot2.ld of=${.TARGET} obs=$$(( (${NSECT} - 1) * 512)) conv=osync 2>/dev/null
 119
 120 boot2.ldr:
 121         dd if=/dev/zero of=${.TARGET} bs=512 count=1 2>/dev/null
 122
 123 boot2.bin: boot2.out
 124         objcopy -S -O binary boot2.out ${.TARGET}
 125
 126 boot2.out: boot2.o sio.o
 127         ${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} \
 128                 ${BTX}/lib/crt0.o ${.ALLSRC}
 129
 130 boot2.o: boot2.h
 131
 132 sio.o: sio.S
 133         ${CC} -DSIOPRT=${BOOT_COMCONSOLE_PORT} -DSIOFMT=${B2SIOFMT} \
 134                 -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
 135                 ${.IMPSRC} -o ${.TARGET} -c
 136
 137 install:
 138         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 139                 boot ${DESTDIR}${BINDIR}/boot
 140         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 141                 boot1 ${DESTDIR}${BINDIR}/boot1
 142         ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 143                 boot2 ${DESTDIR}${BINDIR}/boot2
 144
 145 .include <bsd.prog.mk>
 146
 147 .if defined(REALLY_AMD64)
 148 boot2.o: machine
 149
 150 beforedepend ${OBJS}: machine
 151
 152 machine:
 153         ${LN} -sf ${.CURDIR}/../../../i386/include machine
 154
 155 CLEANFILES+=    machine
 156 .endif
 157
 158 CLEANFILES+=    bootasmdef.nx
 159