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