1# 2# linux/arch/arm/boot/compressed/Makefile 3# 4# create a compressed vmlinuz image from the original vmlinux 5# 6 7OBJS = 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. 12ifeq ($(CONFIG_ZBOOT_ROM_MMCIF),y) 13OBJS += mmcif-sh7372.o 14endif 15 16# Ensure that SDHI loader code appears early in the image 17# to minimise that number of bocks that have to be read in 18# order to load it. 19ifeq ($(CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI),y) 20OBJS += sdhi-shmobile.o 21OBJS += sdhi-sh7372.o 22endif 23 24AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET) 25HEAD = head.o 26OBJS += misc.o decompress.o 27FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c 28 29# 30# Architecture dependencies 31# 32ifeq ($(CONFIG_ARCH_ACORN),y) 33OBJS += ll_char_wr.o font.o 34endif 35 36ifeq ($(CONFIG_ARCH_SHARK),y) 37OBJS += head-shark.o ofw-shark.o 38endif 39 40ifeq ($(CONFIG_ARCH_P720T),y) 41# Borrow this code from SA1100 42OBJS += head-sa1100.o 43endif 44 45ifeq ($(CONFIG_ARCH_SA1100),y) 46OBJS += head-sa1100.o 47endif 48 49ifeq ($(CONFIG_ARCH_VT8500),y) 50OBJS += head-vt8500.o 51endif 52 53ifeq ($(CONFIG_CPU_XSCALE),y) 54OBJS += head-xscale.o 55endif 56 57ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y) 58OBJS += head-sharpsl.o 59endif 60 61ifeq ($(CONFIG_CPU_ENDIAN_BE32),y) 62ifeq ($(CONFIG_CPU_CP15),y) 63OBJS += big-endian.o 64else 65# The endian should be set by h/w design. 66endif 67endif 68 69ifeq ($(CONFIG_ARCH_SHMOBILE),y) 70OBJS += head-shmobile.o 71endif 72 73# 74# We now have a PIC decompressor implementation. Decompressors running 75# from RAM should not define ZTEXTADDR. Decompressors running directly 76# from ROM or Flash must define ZTEXTADDR (preferably via the config) 77# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK 78ifeq ($(CONFIG_ZBOOT_ROM),y) 79ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) 80ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) 81else 82ZTEXTADDR := 0 83ZBSSADDR := ALIGN(8) 84endif 85 86SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ 87 88suffix_$(CONFIG_KERNEL_GZIP) = gzip 89suffix_$(CONFIG_KERNEL_LZO) = lzo 90suffix_$(CONFIG_KERNEL_LZMA) = lzma 91 92targets := vmlinux vmlinux.lds \ 93 piggy.$(suffix_y) piggy.$(suffix_y).o \ 94 font.o font.c head.o misc.o $(OBJS) 95 96# Make sure files are removed during clean 97extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S 98 99ifeq ($(CONFIG_FUNCTION_TRACER),y) 100ORIG_CFLAGS := $(KBUILD_CFLAGS) 101KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) 102endif 103 104ccflags-y := -fpic -fno-builtin 105asflags-y := -Wa,-march=all 106 107# Supply ZRELADDR to the decompressor via a linker symbol. 108ifneq ($(CONFIG_AUTO_ZRELADDR),y) 109LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR) 110endif 111ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) 112LDFLAGS_vmlinux += --be8 113endif 114# ? 115LDFLAGS_vmlinux += -p 116# Report unresolved symbol references 117LDFLAGS_vmlinux += --no-undefined 118# Delete all temporary local symbols 119LDFLAGS_vmlinux += -X 120# Next argument is a linker script 121LDFLAGS_vmlinux += -T 122 123# For __aeabi_uidivmod 124lib1funcs = $(obj)/lib1funcs.o 125 126$(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. 136check_for_bad_syms = \ 137bad_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 142check_for_multiple_zreladdr = \ 143if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" == "" ]; then \ 144 echo 'multiple zreladdrs: $(ZRELADDR)'; \ 145 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \ 146 false; \ 147fi 148 149$(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 160CFLAGS_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)" < $< > $@ 167