stand/i386/boot2/Makefile

   1 # $FreeBSD$
   2
   3 .include <bsd.init.mk>
   4
   5 FILES=          boot boot1 boot2
   6
   7 # A value of 0x80 enables LBA support.
   8 BOOT_BOOT1_FLAGS?=      0x80
   9
  10 BOOT_COMCONSOLE_PORT?= 0x3f8
  11 BOOT_COMCONSOLE_SPEED?= 9600
  12 B2SIOFMT?=      0x3
  13
  14 REL1=   0x700
  15 ORG1=   0x7c00
  16 ORG2=   0x2000
  17
  18 # Decide level of UFS support.
  19 BOOT2_UFS?=     UFS1_AND_UFS2
  20 #BOOT2_UFS?=    UFS2_ONLY
  21 #BOOT2_UFS?=    UFS1_ONLY
  22
  23 CFLAGS+=-fomit-frame-pointer \
  24         -mrtd \
  25         -mregparm=3 \
  26         -D${BOOT2_UFS} \
  27         -DFLAGS=${BOOT_BOOT1_FLAGS} \
  28         -DSIOPRT=${BOOT_COMCONSOLE_PORT} \
  29         -DSIOFMT=${B2SIOFMT} \
  30         -DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
  31         -I${LDRSRC} \
  32         -Wall -Waggregate-return -Wbad-function-cast -Wno-cast-align \
  33         -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  34         -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
  35         -Winline
  36
  37 CFLAGS.gcc+=    -Os \
  38                 -fno-asynchronous-unwind-tables \
  39                 --param max-inline-insns-single=100
  40 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} <= 40201
  41 CFLAGS.gcc+=   -mno-align-long-strings
  42 .endif
  43
  44 CFLAGS.clang+=  -Oz ${CLANG_OPT_SMALL}
  45
  46 LD_FLAGS+=${LD_FLAGS_BIN}
  47
  48 CLEANFILES+=    boot
  49
  50 boot: boot1 boot2
  51         cat boot1 boot2 > boot
  52
  53 CLEANFILES+=    boot1 boot1.out boot1.o
  54
  55 boot1: boot1.out
  56         ${OBJCOPY} -S -O binary boot1.out ${.TARGET}
  57
  58 boot1.out: boot1.o
  59         ${LD} ${LD_FLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
  60
  61 CLEANFILES+=    boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
  62                 boot2.h sio.o
  63
  64 BOOT2SIZE=      7680
  65
  66 boot2: boot2.ld
  67         @set -- `ls -l ${.ALLSRC}`; x=$$((${BOOT2SIZE}-$$5)); \
  68             echo "$$x bytes available"; test $$x -ge 0
  69         ${DD} if=${.ALLSRC} of=${.TARGET} obs=${BOOT2SIZE} conv=osync
  70
  71 boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
  72         btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
  73             -o ${.TARGET} -P 1 boot2.bin
  74
  75 boot2.ldr:
  76         ${DD} if=/dev/zero of=${.TARGET} bs=512 count=1
  77
  78 boot2.bin: boot2.out
  79         ${OBJCOPY} -S -O binary boot2.out ${.TARGET}
  80
  81 # For __ashldi3
  82 .PATH: ${SRCTOP}/contrib/llvm-project/compiler-rt/lib/builtins
  83 CFLAGS.ashldi3.c=       -Wno-missing-prototypes -Wno-missing-declarations
  84 CLEANFILES+=    ashldi3.o
  85
  86 boot2.out: ${BTXCRT} boot2.o sio.o ashldi3.o
  87         ${LD} ${LD_FLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
  88
  89 SRCS=   boot2.c boot2.h
  90
  91 boot2.h: boot1.out
  92         ${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
  93             { x = $$1 - ORG1; \
  94             printf("#define XREADORG %#x\n", REL1 + x) }' \
  95             ORG1=`printf "%d" ${ORG1}` \
  96             REL1=`printf "%d" ${REL1}` > ${.TARGET}
  97
  98 .include <bsd.prog.mk>
  99
 100 # XXX: clang integrated-as doesn't grok .codeNN directives yet
 101 CFLAGS.boot1.S=         ${CLANG_NO_IAS}