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_SA1100),y)
51 ifeq ($(CONFIG_CPU_XSCALE),y)
55 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
56 OBJS += head-sharpsl.o
59 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
60 ifeq ($(CONFIG_CPU_CP15),y)
63 # The endian should be set by h/w design.
67 ifeq ($(CONFIG_ARCH_SHMOBILE_LEGACY),y)
68 OBJS += head-shmobile.o
72 # We now have a PIC decompressor implementation. Decompressors running
73 # from RAM should not define ZTEXTADDR. Decompressors running directly
74 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
75 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
76 ifeq ($(CONFIG_ZBOOT_ROM),y)
77 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
78 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
84 SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
86 suffix_$(CONFIG_KERNEL_GZIP) = gzip
87 suffix_$(CONFIG_KERNEL_LZO) = lzo
88 suffix_$(CONFIG_KERNEL_LZMA) = lzma
89 suffix_$(CONFIG_KERNEL_XZ) = xzkern
90 suffix_$(CONFIG_KERNEL_LZ4) = lz4
92 # Borrowed libfdt files for the ATAG compatibility mode
94 libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
95 libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
97 libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
99 $(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
102 $(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
103 $(addprefix $(obj)/,$(libfdt_hdrs))
105 ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
106 OBJS += $(libfdt_objs) atags_to_fdt.o
109 targets := vmlinux vmlinux.lds \
110 piggy.$(suffix_y) piggy.$(suffix_y).o \
111 lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S bswapsdi2.o \
112 bswapsdi2.S font.o font.c head.o misc.o $(OBJS)
114 # Make sure files are removed during clean
115 extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
116 lib1funcs.S ashldi3.S bswapsdi2.S $(libfdt) $(libfdt_hdrs) \
119 ifeq ($(CONFIG_FUNCTION_TRACER),y)
120 ORIG_CFLAGS := $(KBUILD_CFLAGS)
121 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
124 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
125 asflags-y := -DZIMAGE
127 # Supply kernel BSS size to the decompressor via a linker symbol.
128 KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
129 awk 'END{print $$3}')
130 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
131 # Supply ZRELADDR to the decompressor via a linker symbol.
132 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
133 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
135 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
136 LDFLAGS_vmlinux += --be8
139 LDFLAGS_vmlinux += -p
140 # Report unresolved symbol references
141 LDFLAGS_vmlinux += --no-undefined
142 # Delete all temporary local symbols
143 LDFLAGS_vmlinux += -X
144 # Next argument is a linker script
145 LDFLAGS_vmlinux += -T
147 # For __aeabi_uidivmod
148 lib1funcs = $(obj)/lib1funcs.o
150 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
154 ashldi3 = $(obj)/ashldi3.o
156 $(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
159 # For __bswapsi2, __bswapdi2
160 bswapsdi2 = $(obj)/bswapsdi2.o
162 $(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
165 # We need to prevent any GOTOFF relocs being used with references
166 # to symbols in the .bss section since we cannot relocate them
167 # independently from the rest at run time. This can be achieved by
168 # ensuring that no private .bss symbols exist, as global symbols
169 # always have a GOT entry which is what we need.
170 # The .data section is already discarded by the linker script so no need
171 # to bother about it here.
172 check_for_bad_syms = \
173 bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
174 [ -z "$$bad_syms" ] || \
175 ( echo "following symbols must have non local/private scope:" >&2; \
176 echo "$$bad_syms" >&2; rm -f $@; false )
178 check_for_multiple_zreladdr = \
179 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
180 echo 'multiple zreladdrs: $(ZRELADDR)'; \
181 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
185 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
186 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
188 @$(check_for_multiple_zreladdr)
189 $(call if_changed,ld)
190 @$(check_for_bad_syms)
192 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
193 $(call if_changed,$(suffix_y))
195 $(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
197 CFLAGS_font.o := -Dstatic=
199 $(obj)/font.c: $(FONTC)
202 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
203 @sed "$(SEDFLAGS)" < $< > $@
205 $(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S