2 # linux/arch/arm/boot/compressed/Makefile
4 # create a compressed vmlinuz image from the original vmlinux
9 # Ensure that MMCIF loader code appears early in the image
10 # to minimise that number of bocks that have to be read in
12 ifeq ($(CONFIG_ZBOOT_ROM_MMCIF),y)
13 OBJS += mmcif-sh7372.o
16 # Ensure that SDHI loader code appears early in the image
17 # to minimise that number of bocks that have to be read in
19 ifeq ($(CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI),y)
20 OBJS += sdhi-shmobile.o
24 AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
26 OBJS += misc.o decompress.o
27 ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
30 FONTC = $(srctree)/lib/fonts/font_acorn_8x8.c
32 # string library code (-Os is enforced to keep it much smaller)
34 CFLAGS_string.o := -Os
36 ifeq ($(CONFIG_ARM_VIRT_EXT),y)
41 # Architecture dependencies
43 ifeq ($(CONFIG_ARCH_ACORN),y)
44 OBJS += ll_char_wr.o font.o
47 ifeq ($(CONFIG_ARCH_SHARK),y)
48 OBJS += head-shark.o ofw-shark.o
51 ifeq ($(CONFIG_ARCH_SA1100),y)
55 ifeq ($(CONFIG_CPU_XSCALE),y)
59 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
60 OBJS += head-sharpsl.o
63 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
64 ifeq ($(CONFIG_CPU_CP15),y)
67 # The endian should be set by h/w design.
71 ifeq ($(CONFIG_ARCH_SHMOBILE),y)
72 OBJS += head-shmobile.o
76 # We now have a PIC decompressor implementation. Decompressors running
77 # from RAM should not define ZTEXTADDR. Decompressors running directly
78 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
79 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
80 ifeq ($(CONFIG_ZBOOT_ROM),y)
81 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
82 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
88 SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
90 suffix_$(CONFIG_KERNEL_GZIP) = gzip
91 suffix_$(CONFIG_KERNEL_LZO) = lzo
92 suffix_$(CONFIG_KERNEL_LZMA) = lzma
93 suffix_$(CONFIG_KERNEL_XZ) = xzkern
94 suffix_$(CONFIG_KERNEL_LZ4) = lz4
96 # Borrowed libfdt files for the ATAG compatibility mode
98 libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
99 libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
101 libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
103 $(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
106 $(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
107 $(addprefix $(obj)/,$(libfdt_hdrs))
109 ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
110 OBJS += $(libfdt_objs) atags_to_fdt.o
113 targets := vmlinux vmlinux.lds \
114 piggy.$(suffix_y) piggy.$(suffix_y).o \
115 lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S \
116 font.o font.c head.o misc.o $(OBJS)
118 # Make sure files are removed during clean
119 extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
120 lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) \
123 ifeq ($(CONFIG_FUNCTION_TRACER),y)
124 ORIG_CFLAGS := $(KBUILD_CFLAGS)
125 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
128 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
129 asflags-y := -DZIMAGE
131 # Supply kernel BSS size to the decompressor via a linker symbol.
132 KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
133 awk 'END{print $$3}')
134 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
135 # Supply ZRELADDR to the decompressor via a linker symbol.
136 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
137 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
139 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
140 LDFLAGS_vmlinux += --be8
143 LDFLAGS_vmlinux += -p
144 # Report unresolved symbol references
145 LDFLAGS_vmlinux += --no-undefined
146 # Delete all temporary local symbols
147 LDFLAGS_vmlinux += -X
148 # Next argument is a linker script
149 LDFLAGS_vmlinux += -T
151 # For __aeabi_uidivmod
152 lib1funcs = $(obj)/lib1funcs.o
154 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
158 ashldi3 = $(obj)/ashldi3.o
160 $(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
163 # We need to prevent any GOTOFF relocs being used with references
164 # to symbols in the .bss section since we cannot relocate them
165 # independently from the rest at run time. This can be achieved by
166 # ensuring that no private .bss symbols exist, as global symbols
167 # always have a GOT entry which is what we need.
168 # The .data section is already discarded by the linker script so no need
169 # to bother about it here.
170 check_for_bad_syms = \
171 bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
172 [ -z "$$bad_syms" ] || \
173 ( echo "following symbols must have non local/private scope:" >&2; \
174 echo "$$bad_syms" >&2; rm -f $@; false )
176 check_for_multiple_zreladdr = \
177 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
178 echo 'multiple zreladdrs: $(ZRELADDR)'; \
179 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
183 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
184 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE
185 @$(check_for_multiple_zreladdr)
186 $(call if_changed,ld)
187 @$(check_for_bad_syms)
189 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
190 $(call if_changed,$(suffix_y))
192 $(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
194 CFLAGS_font.o := -Dstatic=
196 $(obj)/font.c: $(FONTC)
199 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
200 @sed "$(SEDFLAGS)" < $< > $@
202 $(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S