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   1 # Makefile for the Sparc boot stuff.
   2 #
   3 # Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   4 # Copyright (C) 1997,1998 Jakub Jelinek (jj@ultra.linux.cz)
   5
   6 ROOT_IMG        := /usr/src/root.img
   7 ELFTOAOUT       := elftoaout
   8
   9 hostprogs-y     := piggyback btfixupprep
  10 targets         := tftpboot.img btfix.o btfix.S image
  11
  12 quiet_cmd_elftoaout     = ELFTOAOUT $@
  13       cmd_elftoaout     = $(ELFTOAOUT) $(obj)/image -o $@
  14 quiet_cmd_piggy         = PIGGY   $@
  15       cmd_piggy         = $(obj)/piggyback $@ $(obj)/System.map $(ROOT_IMG)
  16 quiet_cmd_btfix         = BTFIX   $@
  17       cmd_btfix         = $(OBJDUMP) -x vmlinux | $(obj)/btfixupprep > $@
  18 quiet_cmd_sysmap        = SYSMAP  $(obj)/System.map
  19       cmd_sysmap        = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
  20 quiet_cmd_image = LD      $@
  21       cmd_image = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) -o $@
  22
  23 define rule_image
  24         $(if $($(quiet)cmd_image),               \
  25           echo '  $($(quiet)cmd_image)' &&)      \
  26           $(cmd_image);                          \
  27         $(if $($(quiet)cmd_sysmap),              \
  28           echo '  $($(quiet)cmd_sysmap)' &&)  \
  29         $(cmd_sysmap) $@ $(obj)/System.map;      \
  30         if [ $$? -ne 0 ]; then                   \
  31                 rm -f $@;                        \
  32                 /bin/false;                      \
  33         fi;                                      \
  34         echo 'cmd_$@ := $(cmd_image)' > $(@D)/.$(@F).cmd
  35 endef
  36
  37 BTOBJS := $(HEAD_Y) $(INIT_Y)
  38 BTLIBS := $(CORE_Y) $(LIBS_Y) $(DRIVERS_Y) $(NET_Y)
  39 LDFLAGS_image := -T arch/sparc/kernel/vmlinux.lds $(BTOBJS) \
  40                   --start-group $(BTLIBS) --end-group \
  41                   $(kallsyms.o) $(obj)/btfix.o
  42
  43 # Link the final image including btfixup'ed symbols.
  44 # This is a replacement for the link done in the top-level Makefile.
  45 # Note: No dependency on the prerequisite files since that would require
  46 # make to try check if they are updated - and due to changes
  47 # in gcc options (path for example) this would result in
  48 # these files being recompiled for each build.
  49 $(obj)/image: $(obj)/btfix.o FORCE
  50         $(call if_changed_rule,image)
  51
  52 $(obj)/tftpboot.img: $(obj)/piggyback $(obj)/System.map $(obj)/image FORCE
  53         $(call if_changed,elftoaout)
  54         $(call if_changed,piggy)
  55
  56 $(obj)/btfix.S: $(obj)/btfixupprep vmlinux FORCE
  57         $(call if_changed,btfix)