arch/arm/boot/compressed/Makefile

   1 #
   2 # linux/arch/arm/boot/compressed/Makefile
   3 #
   4 # create a compressed vmlinuz image from the original vmlinux
   5 #
   6
   7 OBJS            =
   8
   9 # Ensure that mmcif loader code appears early in the image
  10 # to minimise that number of bocks that have to be read in
  11 # order to load it.
  12 ifeq ($(CONFIG_ZBOOT_ROM_MMCIF),y)
  13 ifeq ($(CONFIG_ARCH_SH7372),y)
  14 OBJS            += mmcif-sh7372.o
  15 endif
  16 endif
  17
  18 AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
  19 HEAD    = head.o
  20 OBJS    += misc.o decompress.o
  21 FONTC   = $(srctree)/drivers/video/console/font_acorn_8x8.c
  22
  23 #
  24 # Architecture dependencies
  25 #
  26 ifeq ($(CONFIG_ARCH_ACORN),y)
  27 OBJS            += ll_char_wr.o font.o
  28 endif
  29
  30 ifeq ($(CONFIG_ARCH_SHARK),y)
  31 OBJS            += head-shark.o ofw-shark.o
  32 endif
  33
  34 ifeq ($(CONFIG_ARCH_P720T),y)
  35 # Borrow this code from SA1100
  36 OBJS            += head-sa1100.o
  37 endif
  38
  39 ifeq ($(CONFIG_ARCH_SA1100),y)
  40 OBJS            += head-sa1100.o
  41 endif
  42
  43 ifeq ($(CONFIG_ARCH_VT8500),y)
  44 OBJS            += head-vt8500.o
  45 endif
  46
  47 ifeq ($(CONFIG_CPU_XSCALE),y)
  48 OBJS            += head-xscale.o
  49 endif
  50
  51 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
  52 OBJS            += head-sharpsl.o
  53 endif
  54
  55 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
  56 ifeq ($(CONFIG_CPU_CP15),y)
  57 OBJS            += big-endian.o
  58 else
  59 # The endian should be set by h/w design.
  60 endif
  61 endif
  62
  63 ifeq ($(CONFIG_ARCH_SHMOBILE),y)
  64 OBJS            += head-shmobile.o
  65 endif
  66
  67 #
  68 # We now have a PIC decompressor implementation.  Decompressors running
  69 # from RAM should not define ZTEXTADDR.  Decompressors running directly
  70 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
  71 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
  72 ifeq ($(CONFIG_ZBOOT_ROM),y)
  73 ZTEXTADDR       := $(CONFIG_ZBOOT_ROM_TEXT)
  74 ZBSSADDR        := $(CONFIG_ZBOOT_ROM_BSS)
  75 else
  76 ZTEXTADDR       := 0
  77 ZBSSADDR        := ALIGN(8)
  78 endif
  79
  80 SEDFLAGS        = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
  81
  82 suffix_$(CONFIG_KERNEL_GZIP) = gzip
  83 suffix_$(CONFIG_KERNEL_LZO)  = lzo
  84 suffix_$(CONFIG_KERNEL_LZMA) = lzma
  85
  86 targets       := vmlinux vmlinux.lds \
  87                  piggy.$(suffix_y) piggy.$(suffix_y).o \
  88                  font.o font.c head.o misc.o $(OBJS)
  89
  90 # Make sure files are removed during clean
  91 extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
  92
  93 ifeq ($(CONFIG_FUNCTION_TRACER),y)
  94 ORIG_CFLAGS := $(KBUILD_CFLAGS)
  95 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
  96 endif
  97
  98 ccflags-y := -fpic -fno-builtin
  99 asflags-y := -Wa,-march=all
 100
 101 # Supply ZRELADDR to the decompressor via a linker symbol.
 102 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
 103 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
 104 endif
 105 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
 106 LDFLAGS_vmlinux += --be8
 107 endif
 108 # ?
 109 LDFLAGS_vmlinux += -p
 110 # Report unresolved symbol references
 111 LDFLAGS_vmlinux += --no-undefined
 112 # Delete all temporary local symbols
 113 LDFLAGS_vmlinux += -X
 114 # Next argument is a linker script
 115 LDFLAGS_vmlinux += -T
 116
 117 # For __aeabi_uidivmod
 118 lib1funcs = $(obj)/lib1funcs.o
 119
 120 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
 121         $(call cmd,shipped)
 122
 123 # We need to prevent any GOTOFF relocs being used with references
 124 # to symbols in the .bss section since we cannot relocate them
 125 # independently from the rest at run time.  This can be achieved by
 126 # ensuring that no private .bss symbols exist, as global symbols
 127 # always have a GOT entry which is what we need.
 128 # The .data section is already discarded by the linker script so no need
 129 # to bother about it here.
 130 check_for_bad_syms = \
 131 bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
 132 [ -z "$$bad_syms" ] || \
 133   ( echo "following symbols must have non local/private scope:" >&2; \
 134     echo "$$bad_syms" >&2; rm -f $@; false )
 135
 136 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
 137                 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
 138         $(call if_changed,ld)
 139         @$(check_for_bad_syms)
 140
 141 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
 142         $(call if_changed,$(suffix_y))
 143
 144 $(obj)/piggy.$(suffix_y).o:  $(obj)/piggy.$(suffix_y) FORCE
 145
 146 CFLAGS_font.o := -Dstatic=
 147
 148 $(obj)/font.c: $(FONTC)
 149         $(call cmd,shipped)
 150
 151 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
 152         @sed "$(SEDFLAGS)" < $< > $@