diff options
Diffstat (limited to 'arch/arm/boot/compressed/Makefile')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile new file mode 100644 index 000000000..6e1fb2b2e --- /dev/null +++ b/arch/arm/boot/compressed/Makefile @@ -0,0 +1,190 @@ +# +# linux/arch/arm/boot/compressed/Makefile +# +# create a compressed vmlinuz image from the original vmlinux +# + +OBJS = + +AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET) +HEAD = head.o +OBJS += misc.o decompress.o +ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y) +OBJS += debug.o +endif +FONTC = $(srctree)/lib/fonts/font_acorn_8x8.c + +# string library code (-Os is enforced to keep it much smaller) +OBJS += string.o +CFLAGS_string.o := -Os + +ifeq ($(CONFIG_ARM_VIRT_EXT),y) +OBJS += hyp-stub.o +endif + +GCOV_PROFILE := n + +# +# Architecture dependencies +# +ifeq ($(CONFIG_ARCH_ACORN),y) +OBJS += ll_char_wr.o font.o +endif + +ifeq ($(CONFIG_ARCH_SA1100),y) +OBJS += head-sa1100.o +endif + +ifeq ($(CONFIG_CPU_XSCALE),y) +OBJS += head-xscale.o +endif + +ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y) +OBJS += head-sharpsl.o +endif + +ifeq ($(CONFIG_CPU_ENDIAN_BE32),y) +ifeq ($(CONFIG_CPU_CP15),y) +OBJS += big-endian.o +else +# The endian should be set by h/w design. +endif +endif + +ifeq ($(CONFIG_ARCH_SHMOBILE_LEGACY),y) +OBJS += head-shmobile.o +endif + +# +# We now have a PIC decompressor implementation. Decompressors running +# from RAM should not define ZTEXTADDR. Decompressors running directly +# from ROM or Flash must define ZTEXTADDR (preferably via the config) +# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK +ifeq ($(CONFIG_ZBOOT_ROM),y) +ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) +ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) +else +ZTEXTADDR := 0 +ZBSSADDR := ALIGN(8) +endif + +CPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTADDR)" -DBSS_START="$(ZBSSADDR)" + +suffix_$(CONFIG_KERNEL_GZIP) = gzip +suffix_$(CONFIG_KERNEL_LZO) = lzo +suffix_$(CONFIG_KERNEL_LZMA) = lzma +suffix_$(CONFIG_KERNEL_XZ) = xzkern +suffix_$(CONFIG_KERNEL_LZ4) = lz4 + +# Borrowed libfdt files for the ATAG compatibility mode + +libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c +libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h + +libfdt_objs := $(addsuffix .o, $(basename $(libfdt))) + +$(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/% + $(call cmd,shipped) + +$(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \ + $(addprefix $(obj)/,$(libfdt_hdrs)) + +ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y) +OBJS += $(libfdt_objs) atags_to_fdt.o +endif + +targets := vmlinux vmlinux.lds \ + piggy.$(suffix_y) piggy.$(suffix_y).o \ + lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S bswapsdi2.o \ + bswapsdi2.S font.o font.c head.o misc.o $(OBJS) + +# Make sure files are removed during clean +extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \ + lib1funcs.S ashldi3.S bswapsdi2.S $(libfdt) $(libfdt_hdrs) \ + hyp-stub.S + +ifeq ($(CONFIG_FUNCTION_TRACER),y) +ORIG_CFLAGS := $(KBUILD_CFLAGS) +KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) +endif + +ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) +asflags-y := -DZIMAGE + +# Supply kernel BSS size to the decompressor via a linker symbol. +KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \ + awk 'END{print $$3}') +LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ) +# Supply ZRELADDR to the decompressor via a linker symbol. +ifneq ($(CONFIG_AUTO_ZRELADDR),y) +LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR) +endif +ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) +LDFLAGS_vmlinux += --be8 +endif +# ? +LDFLAGS_vmlinux += -p +# Report unresolved symbol references +LDFLAGS_vmlinux += --no-undefined +# Delete all temporary local symbols +LDFLAGS_vmlinux += -X +# Next argument is a linker script +LDFLAGS_vmlinux += -T + +# For __aeabi_uidivmod +lib1funcs = $(obj)/lib1funcs.o + +$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S + $(call cmd,shipped) + +# For __aeabi_llsl +ashldi3 = $(obj)/ashldi3.o + +$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S + $(call cmd,shipped) + +# For __bswapsi2, __bswapdi2 +bswapsdi2 = $(obj)/bswapsdi2.o + +$(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S + $(call cmd,shipped) + +# We need to prevent any GOTOFF relocs being used with references +# to symbols in the .bss section since we cannot relocate them +# independently from the rest at run time. This can be achieved by +# ensuring that no private .bss symbols exist, as global symbols +# always have a GOT entry which is what we need. +# The .data section is already discarded by the linker script so no need +# to bother about it here. +check_for_bad_syms = \ +bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \ +[ -z "$$bad_syms" ] || \ + ( echo "following symbols must have non local/private scope:" >&2; \ + echo "$$bad_syms" >&2; rm -f $@; false ) + +check_for_multiple_zreladdr = \ +if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \ + echo 'multiple zreladdrs: $(ZRELADDR)'; \ + echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \ + false; \ +fi + +$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \ + $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \ + $(bswapsdi2) FORCE + @$(check_for_multiple_zreladdr) + $(call if_changed,ld) + @$(check_for_bad_syms) + +$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE + $(call if_changed,$(suffix_y)) + +$(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE + +CFLAGS_font.o := -Dstatic= + +$(obj)/font.c: $(FONTC) + $(call cmd,shipped) + +$(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S + $(call cmd,shipped) |