199 lines
5.4 KiB
Makefile
199 lines
5.4 KiB
Makefile
#
|
|
# 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
|
|
|
|
#
|
|
# 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="$(ZBSSADDR)"
|
|
|
|
compress-$(CONFIG_KERNEL_GZIP) = gzip
|
|
compress-$(CONFIG_KERNEL_LZO) = lzo
|
|
compress-$(CONFIG_KERNEL_LZMA) = lzma
|
|
compress-$(CONFIG_KERNEL_XZ) = xzkern
|
|
compress-$(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_data piggy.o \
|
|
lib1funcs.o ashldi3.o bswapsdi2.o \
|
|
head.o $(OBJS)
|
|
|
|
clean-files += piggy_data lib1funcs.S ashldi3.S bswapsdi2.S \
|
|
$(libfdt) $(libfdt_hdrs) hyp-stub.S
|
|
|
|
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
|
|
|
|
ifeq ($(CONFIG_FUNCTION_TRACER),y)
|
|
ORIG_CFLAGS := $(KBUILD_CFLAGS)
|
|
KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
|
|
endif
|
|
|
|
# -fstack-protector-strong triggers protection checks in this code,
|
|
# but it is being used too early to link to meaningful stack_chk logic.
|
|
nossp_flags := $(call cc-option, -fno-stack-protector)
|
|
CFLAGS_atags_to_fdt.o := $(nossp_flags)
|
|
CFLAGS_fdt.o := $(nossp_flags)
|
|
CFLAGS_fdt_ro.o := $(nossp_flags)
|
|
CFLAGS_fdt_rw.o := $(nossp_flags)
|
|
CFLAGS_fdt_wip.o := $(nossp_flags)
|
|
|
|
ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(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: $(ZRELADDR)'; \
|
|
echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
|
|
false; \
|
|
fi
|
|
|
|
efi-obj-$(CONFIG_EFI_STUB) := $(objtree)/drivers/firmware/efi/libstub/lib.a
|
|
|
|
$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.o \
|
|
$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
|
|
$(bswapsdi2) $(efi-obj-y) FORCE
|
|
@$(check_for_multiple_zreladdr)
|
|
$(call if_changed,ld)
|
|
@$(check_for_bad_syms)
|
|
|
|
$(obj)/piggy_data: $(obj)/../Image FORCE
|
|
$(call if_changed,$(compress-y))
|
|
|
|
$(obj)/piggy.o: $(obj)/piggy_data
|
|
|
|
CFLAGS_font.o := -Dstatic=
|
|
|
|
$(obj)/font.c: $(FONTC)
|
|
$(call cmd,shipped)
|
|
|
|
AFLAGS_hyp-stub.o := -Wa,-march=armv7-a
|
|
|
|
$(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S
|
|
$(call cmd,shipped)
|