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 ($(CONFIG_ZBOOT_ROM_MMCIF),y)
  13 OBJS            += mmcif-sh7372.o
  14 endif
  15
  16 # Ensure that SDHI loader code appears early in the image
  17 # to minimise that number of bocks that have to be read in
  18 # order to load it.
  19 ifeq ($(CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI),y)
  20 OBJS            += sdhi-shmobile.o
  21 OBJS            += sdhi-sh7372.o
  22 endif
  23
  24 AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
  25 HEAD    = head.o
  26 OBJS    += misc.o decompress.o
  27 FONTC   = $(srctree)/drivers/video/console/font_acorn_8x8.c
  28
  29 #
  30 # Architecture dependencies
  31 #
  32 ifeq ($(CONFIG_ARCH_ACORN),y)
  33 OBJS            += ll_char_wr.o font.o
  34 endif
  35
  36 ifeq ($(CONFIG_ARCH_SHARK),y)
  37 OBJS            += head-shark.o ofw-shark.o
  38 endif
  39
  40 ifeq ($(CONFIG_ARCH_P720T),y)
  41 # Borrow this code from SA1100
  42 OBJS            += head-sa1100.o
  43 endif
  44
  45 ifeq ($(CONFIG_ARCH_SA1100),y)
  46 OBJS            += head-sa1100.o
  47 endif
  48
  49 ifeq ($(CONFIG_ARCH_VT8500),y)
  50 OBJS            += head-vt8500.o
  51 endif
  52
  53 ifeq ($(CONFIG_CPU_XSCALE),y)
  54 OBJS            += head-xscale.o
  55 endif
  56
  57 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
  58 OBJS            += head-sharpsl.o
  59 endif
  60
  61 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
  62 ifeq ($(CONFIG_CPU_CP15),y)
  63 OBJS            += big-endian.o
  64 else
  65 # The endian should be set by h/w design.
  66 endif
  67 endif
  68
  69 ifeq ($(CONFIG_ARCH_SHMOBILE),y)
  70 OBJS            += head-shmobile.o
  71 endif
  72
  73 #
  74 # We now have a PIC decompressor implementation.  Decompressors running
  75 # from RAM should not define ZTEXTADDR.  Decompressors running directly
  76 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
  77 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
  78 ifeq ($(CONFIG_ZBOOT_ROM),y)
  79 ZTEXTADDR       := $(CONFIG_ZBOOT_ROM_TEXT)
  80 ZBSSADDR        := $(CONFIG_ZBOOT_ROM_BSS)
  81 else
  82 ZTEXTADDR       := 0
  83 ZBSSADDR        := ALIGN(8)
  84 endif
  85
  86 SEDFLAGS        = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
  87
  88 suffix_$(CONFIG_KERNEL_GZIP) = gzip
  89 suffix_$(CONFIG_KERNEL_LZO)  = lzo
  90 suffix_$(CONFIG_KERNEL_LZMA) = lzma
  91
  92 targets       := vmlinux vmlinux.lds \
  93                  piggy.$(suffix_y) piggy.$(suffix_y).o \
  94                  font.o font.c head.o misc.o $(OBJS)
  95
  96 # Make sure files are removed during clean
  97 extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
  98
  99 ifeq ($(CONFIG_FUNCTION_TRACER),y)
 100 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 101 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
 102 endif
 103
 104 ccflags-y := -fpic -fno-builtin
 105 asflags-y := -Wa,-march=all
 106
 107 # Supply ZRELADDR to the decompressor via a linker symbol.
 108 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
 109 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
 110 endif
 111 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
 112 LDFLAGS_vmlinux += --be8
 113 endif
 114 # ?
 115 LDFLAGS_vmlinux += -p
 116 # Report unresolved symbol references
 117 LDFLAGS_vmlinux += --no-undefined
 118 # Delete all temporary local symbols
 119 LDFLAGS_vmlinux += -X
 120 # Next argument is a linker script
 121 LDFLAGS_vmlinux += -T
 122
 123 # For __aeabi_uidivmod
 124 lib1funcs = $(obj)/lib1funcs.o
 125
 126 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
 127         $(call cmd,shipped)
 128
 129 # We need to prevent any GOTOFF relocs being used with references
 130 # to symbols in the .bss section since we cannot relocate them
 131 # independently from the rest at run time.  This can be achieved by
 132 # ensuring that no private .bss symbols exist, as global symbols
 133 # always have a GOT entry which is what we need.
 134 # The .data section is already discarded by the linker script so no need
 135 # to bother about it here.
 136 check_for_bad_syms = \
 137 bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
 138 [ -z "$$bad_syms" ] || \
 139   ( echo "following symbols must have non local/private scope:" >&2; \
 140     echo "$$bad_syms" >&2; rm -f $@; false )
 141
 142 check_for_multiple_zreladdr = \
 143 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" == "" ]; then \
 144         echo 'multiple zreladdrs: $(ZRELADDR)'; \
 145         echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
 146         false; \
 147 fi
 148
 149 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
 150                 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
 151         @$(check_for_multiple_zreladdr)
 152         $(call if_changed,ld)
 153         @$(check_for_bad_syms)
 154
 155 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
 156         $(call if_changed,$(suffix_y))
 157
 158 $(obj)/piggy.$(suffix_y).o:  $(obj)/piggy.$(suffix_y) FORCE
 159
 160 CFLAGS_font.o := -Dstatic=
 161
 162 $(obj)/font.c: $(FONTC)
 163         $(call cmd,shipped)
 164
 165 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
 166         @sed "$(SEDFLAGS)" < $< > $@