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=$(TEXT_OFFSET)
  25 HEAD    = head.o
  26 OBJS    += misc.o decompress.o
  27 ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
  28 OBJS    += debug.o
  29 endif
  30 FONTC   = $(srctree)/drivers/video/console/font_acorn_8x8.c
  31
  32 # string library code (-Os is enforced to keep it much smaller)
  33 OBJS            += string.o
  34 CFLAGS_string.o := -Os
  35
  36 ifeq ($(CONFIG_ARM_VIRT_EXT),y)
  37 OBJS            += hyp-stub.o
  38 endif
  39
  40 #
  41 # Architecture dependencies
  42 #
  43 ifeq ($(CONFIG_ARCH_ACORN),y)
  44 OBJS            += ll_char_wr.o font.o
  45 endif
  46
  47 ifeq ($(CONFIG_ARCH_SHARK),y)
  48 OBJS            += head-shark.o ofw-shark.o
  49 endif
  50
  51 ifeq ($(CONFIG_ARCH_SA1100),y)
  52 OBJS            += head-sa1100.o
  53 endif
  54
  55 ifeq ($(CONFIG_CPU_XSCALE),y)
  56 OBJS            += head-xscale.o
  57 endif
  58
  59 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
  60 OBJS            += head-sharpsl.o
  61 endif
  62
  63 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
  64 ifeq ($(CONFIG_CPU_CP15),y)
  65 OBJS            += big-endian.o
  66 else
  67 # The endian should be set by h/w design.
  68 endif
  69 endif
  70
  71 ifeq ($(CONFIG_ARCH_SHMOBILE),y)
  72 OBJS            += head-shmobile.o
  73 endif
  74
  75 #
  76 # We now have a PIC decompressor implementation.  Decompressors running
  77 # from RAM should not define ZTEXTADDR.  Decompressors running directly
  78 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
  79 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
  80 ifeq ($(CONFIG_ZBOOT_ROM),y)
  81 ZTEXTADDR       := $(CONFIG_ZBOOT_ROM_TEXT)
  82 ZBSSADDR        := $(CONFIG_ZBOOT_ROM_BSS)
  83 else
  84 ZTEXTADDR       := 0
  85 ZBSSADDR        := ALIGN(8)
  86 endif
  87
  88 SEDFLAGS        = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
  89
  90 suffix_$(CONFIG_KERNEL_GZIP) = gzip
  91 suffix_$(CONFIG_KERNEL_LZO)  = lzo
  92 suffix_$(CONFIG_KERNEL_LZMA) = lzma
  93 suffix_$(CONFIG_KERNEL_XZ)   = xzkern
  94
  95 # Borrowed libfdt files for the ATAG compatibility mode
  96
  97 libfdt          := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
  98 libfdt_hdrs     := fdt.h libfdt.h libfdt_internal.h
  99
 100 libfdt_objs     := $(addsuffix .o, $(basename $(libfdt)))
 101
 102 $(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
 103         $(call cmd,shipped)
 104
 105 $(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
 106         $(addprefix $(obj)/,$(libfdt_hdrs))
 107
 108 ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
 109 OBJS    += $(libfdt_objs) atags_to_fdt.o
 110 endif
 111
 112 targets       := vmlinux vmlinux.lds \
 113                  piggy.$(suffix_y) piggy.$(suffix_y).o \
 114                  lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S \
 115                  font.o font.c head.o misc.o $(OBJS)
 116
 117 # Make sure files are removed during clean
 118 extra-y       += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern \
 119                  lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs)
 120
 121 ifeq ($(CONFIG_FUNCTION_TRACER),y)
 122 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 123 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
 124 endif
 125
 126 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
 127 asflags-y := -DZIMAGE
 128
 129 # Supply kernel BSS size to the decompressor via a linker symbol.
 130 KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
 131                 awk 'END{print $$3}')
 132 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
 133 # Supply ZRELADDR to the decompressor via a linker symbol.
 134 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
 135 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
 136 endif
 137 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
 138 LDFLAGS_vmlinux += --be8
 139 endif
 140 # ?
 141 LDFLAGS_vmlinux += -p
 142 # Report unresolved symbol references
 143 LDFLAGS_vmlinux += --no-undefined
 144 # Delete all temporary local symbols
 145 LDFLAGS_vmlinux += -X
 146 # Next argument is a linker script
 147 LDFLAGS_vmlinux += -T
 148
 149 # For __aeabi_uidivmod
 150 lib1funcs = $(obj)/lib1funcs.o
 151
 152 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
 153         $(call cmd,shipped)
 154
 155 # For __aeabi_llsl
 156 ashldi3 = $(obj)/ashldi3.o
 157
 158 $(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
 159         $(call cmd,shipped)
 160
 161 # We need to prevent any GOTOFF relocs being used with references
 162 # to symbols in the .bss section since we cannot relocate them
 163 # independently from the rest at run time.  This can be achieved by
 164 # ensuring that no private .bss symbols exist, as global symbols
 165 # always have a GOT entry which is what we need.
 166 # The .data section is already discarded by the linker script so no need
 167 # to bother about it here.
 168 check_for_bad_syms = \
 169 bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
 170 [ -z "$$bad_syms" ] || \
 171   ( echo "following symbols must have non local/private scope:" >&2; \
 172     echo "$$bad_syms" >&2; rm -f $@; false )
 173
 174 check_for_multiple_zreladdr = \
 175 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
 176         echo 'multiple zreladdrs: $(ZRELADDR)'; \
 177         echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
 178         false; \
 179 fi
 180
 181 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
 182                 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE
 183         @$(check_for_multiple_zreladdr)
 184         $(call if_changed,ld)
 185         @$(check_for_bad_syms)
 186
 187 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
 188         $(call if_changed,$(suffix_y))
 189
 190 $(obj)/piggy.$(suffix_y).o:  $(obj)/piggy.$(suffix_y) FORCE
 191
 192 CFLAGS_font.o := -Dstatic=
 193
 194 $(obj)/font.c: $(FONTC)
 195         $(call cmd,shipped)
 196
 197 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
 198         @sed "$(SEDFLAGS)" < $< > $@
 199
 200 $(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S
 201         $(call cmd,shipped)