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 ($(CONFIG_ARCH_P720T),y) 49# Borrow this code from SA1100 50OBJS += head-sa1100.o 51endif 52 53ifeq ($(CONFIG_ARCH_SA1100),y) 54OBJS += head-sa1100.o 55endif 56 57ifeq ($(CONFIG_ARCH_VT8500),y) 58OBJS += head-vt8500.o 59endif 60 61ifeq ($(CONFIG_CPU_XSCALE),y) 62OBJS += head-xscale.o 63endif 64 65ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y) 66OBJS += head-sharpsl.o 67endif 68 69ifeq ($(CONFIG_CPU_ENDIAN_BE32),y) 70ifeq ($(CONFIG_CPU_CP15),y) 71OBJS += big-endian.o 72else 73# The endian should be set by h/w design. 74endif 75endif 76 77ifeq ($(CONFIG_ARCH_SHMOBILE),y) 78OBJS += head-shmobile.o 79endif 80 81# 82# We now have a PIC decompressor implementation. Decompressors running 83# from RAM should not define ZTEXTADDR. Decompressors running directly 84# from ROM or Flash must define ZTEXTADDR (preferably via the config) 85# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK 86ifeq ($(CONFIG_ZBOOT_ROM),y) 87ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) 88ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) 89else 90ZTEXTADDR := 0 91ZBSSADDR := ALIGN(8) 92endif 93 94SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ 95 96suffix_$(CONFIG_KERNEL_GZIP) = gzip 97suffix_$(CONFIG_KERNEL_LZO) = lzo 98suffix_$(CONFIG_KERNEL_LZMA) = lzma 99suffix_$(CONFIG_KERNEL_XZ) = xzkern 100 101# Borrowed libfdt files for the ATAG compatibility mode 102 103libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c 104libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h 105 106libfdt_objs := $(addsuffix .o, $(basename $(libfdt))) 107 108$(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/% 109 $(call cmd,shipped) 110 111$(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \ 112 $(addprefix $(obj)/,$(libfdt_hdrs)) 113 114ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y) 115OBJS += $(libfdt_objs) atags_to_fdt.o 116endif 117 118targets := vmlinux vmlinux.lds \ 119 piggy.$(suffix_y) piggy.$(suffix_y).o \ 120 lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S \ 121 font.o font.c head.o misc.o $(OBJS) 122 123# Make sure files are removed during clean 124extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern \ 125 lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) 126 127ifeq ($(CONFIG_FUNCTION_TRACER),y) 128ORIG_CFLAGS := $(KBUILD_CFLAGS) 129KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) 130endif 131 132ccflags-y := -fpic -fno-builtin -I$(obj) 133asflags-y := -Wa,-march=all -DZIMAGE 134 135# Supply kernel BSS size to the decompressor via a linker symbol. 136KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \ 137 awk 'END{print $$3}') 138LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ) 139# Supply ZRELADDR to the decompressor via a linker symbol. 140ifneq ($(CONFIG_AUTO_ZRELADDR),y) 141LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR) 142endif 143ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) 144LDFLAGS_vmlinux += --be8 145endif 146# ? 147LDFLAGS_vmlinux += -p 148# Report unresolved symbol references 149LDFLAGS_vmlinux += --no-undefined 150# Delete all temporary local symbols 151LDFLAGS_vmlinux += -X 152# Next argument is a linker script 153LDFLAGS_vmlinux += -T 154 155# For __aeabi_uidivmod 156lib1funcs = $(obj)/lib1funcs.o 157 158$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S 159 $(call cmd,shipped) 160 161# For __aeabi_llsl 162ashldi3 = $(obj)/ashldi3.o 163 164$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S 165 $(call cmd,shipped) 166 167# We need to prevent any GOTOFF relocs being used with references 168# to symbols in the .bss section since we cannot relocate them 169# independently from the rest at run time. This can be achieved by 170# ensuring that no private .bss symbols exist, as global symbols 171# always have a GOT entry which is what we need. 172# The .data section is already discarded by the linker script so no need 173# to bother about it here. 174check_for_bad_syms = \ 175bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \ 176[ -z "$$bad_syms" ] || \ 177 ( echo "following symbols must have non local/private scope:" >&2; \ 178 echo "$$bad_syms" >&2; rm -f $@; false ) 179 180check_for_multiple_zreladdr = \ 181if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \ 182 echo 'multiple zreladdrs: $(ZRELADDR)'; \ 183 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \ 184 false; \ 185fi 186 187$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \ 188 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE 189 @$(check_for_multiple_zreladdr) 190 $(call if_changed,ld) 191 @$(check_for_bad_syms) 192 193$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE 194 $(call if_changed,$(suffix_y)) 195 196$(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE 197 198CFLAGS_font.o := -Dstatic= 199 200$(obj)/font.c: $(FONTC) 201 $(call cmd,shipped) 202 203$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG) 204 @sed "$(SEDFLAGS)" < $< > $@ 205 206$(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S 207 $(call cmd,shipped) 208