sys/conf/Makefile.arm

   1 # Makefile.arm -- with config changes.
   2 # Copyright 1990 W. Jolitz
   3 # Makefile for FreeBSD
   4 #
   5 # This makefile is constructed from a machine description:
   6 #       config machineid
   7 # Most changes should be made in the machine description
   8 #       /sys/arm/conf/``machineid''
   9 # after which you should do
  10 #        config machineid
  11 # Generic makefile changes should be made in
  12 #       /sys/conf/Makefile.arm
  13 # after which config should be rerun for all machines.
  14 #
  15
  16 # Which version of config(8) is required.
  17 %VERSREQ=       600013
  18
  19 STD8X16FONT?=   iso
  20
  21 .if !defined(S)
  22 .if exists(./@/.)
  23 S=      ./@
  24 .else
  25 S=      ../../..
  26 .endif
  27 .endif
  28 .include "$S/conf/kern.pre.mk"
  29
  30 INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include -I$S/dts/include
  31
  32 LINUX_DTS_VERSION!=     awk '/freebsd,dts-version/ { sub(/;$$/,"", $$NF); print $$NF }' $S/dts/freebsd-compatible.dts
  33 CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\"
  34
  35 .if !defined(DEBUG)
  36 STRIP_FLAGS = -S
  37 .endif
  38
  39 # We don't support gcc's thump interwork stuff, so disable it
  40 CFLAGS.gcc += -mno-thumb-interwork
  41
  42 # We generally don't want fpu instructions in the kernel.
  43 CFLAGS.clang += -mfpu=none
  44
  45 .if !empty(DDB_ENABLED)
  46 CFLAGS += -funwind-tables
  47 .endif
  48
  49 # "makeoptions KERNVIRTADDR=" is now optional, supply the default value.
  50 .if empty(KERNVIRTADDR)
  51 KERNVIRTADDR= 0xc0000000
  52 .endif
  53
  54 # Use a custom SYSTEM_LD command to generate the elf kernel, so we can
  55 # set the text segment start address, and also strip the "arm mapping
  56 # symbols" which have names like $a.0 and $d.2; see the document
  57 # "ELF for the ARM architecture" for more info on the mapping symbols.
  58 SYSTEM_LD= \
  59         ${SYSTEM_LD_BASECMD} \
  60             --defsym='text_start=kernbase + SIZEOF_HEADERS' \
  61             -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \
  62         $(OBJCOPY) \
  63             --wildcard \
  64             --strip-symbol='$$[adt]*' \
  65             ${.TARGET}
  66
  67 %BEFORE_DEPEND
  68
  69 %OBJS
  70
  71 %FILES.c
  72
  73 %FILES.s
  74
  75 %FILES.m
  76
  77 %CLEAN
  78
  79 %RULES
  80
  81 .include "$S/conf/kern.post.mk"
  82
  83 # Generate the .bin (no elf headers) kernel
  84 # Copy the kernel to directly executable format (the elf headers are
  85 # stripped and a binary head blob with jump to kernel start address is
  86 # prepended), saving the output in a temp file.
  87 # We also strip arm "marker" symbols which are used only by elf toolchains. Read
  88 # the symbols from kernel.full and pass  them to arm_kernel_boothdr.awk, which
  89 # generates a binary header blob that goes on the front of the stripped kernel.
  90 # Cat the header blob and the temp file together to make the kernel.bin file.
  91 ${KERNEL_KO}.bin: ${FULLKERNEL}
  92         @${OBJCOPY} --wildcard --strip-symbol='$$[adtx]*' \
  93             --output-target=binary ${FULLKERNEL} ${.TARGET}.temp
  94         @{ ${NM} ${FULLKERNEL} | \
  95             LC_ALL=C \
  96             ${AWK} -f $S/tools/arm_kernel_boothdr.awk -v hdrtype=v7jump && \
  97             cat ${.TARGET}.temp; \
  98          } > ${.TARGET}
  99         @rm ${.TARGET}.temp
 100         @echo "created ${.TARGET} from ${.ALLSRC}"