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)
43 # Architecture dependencies
45 ifeq ($(CONFIG_ARCH_ACORN),y)
46 OBJS += ll_char_wr.o font.o
49 ifeq ($(CONFIG_ARCH_SA1100),y)
53 ifeq ($(CONFIG_CPU_XSCALE),y)
57 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
58 OBJS += head-sharpsl.o
61 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
62 ifeq ($(CONFIG_CPU_CP15),y)
65 # The endian should be set by h/w design.
69 ifeq ($(CONFIG_ARCH_SHMOBILE_LEGACY),y)
70 OBJS += head-shmobile.o
74 # We now have a PIC decompressor implementation. Decompressors running
75 # from RAM should not define ZTEXTADDR. Decompressors running directly
76 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
77 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
78 ifeq ($(CONFIG_ZBOOT_ROM),y)
79 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
80 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
86 CPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTADDR)" -DBSS_START="$(ZBSSADDR)"
88 suffix_$(CONFIG_KERNEL_GZIP) = gzip
89 suffix_$(CONFIG_KERNEL_LZO) = lzo
90 suffix_$(CONFIG_KERNEL_LZMA) = lzma
91 suffix_$(CONFIG_KERNEL_XZ) = xzkern
92 suffix_$(CONFIG_KERNEL_LZ4) = lz4
94 # Borrowed libfdt files for the ATAG compatibility mode
96 libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
97 libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
99 libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
101 $(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
104 $(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
105 $(addprefix $(obj)/,$(libfdt_hdrs))
107 ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
108 OBJS += $(libfdt_objs) atags_to_fdt.o
111 targets := vmlinux vmlinux.lds \
112 piggy.$(suffix_y) piggy.$(suffix_y).o \
113 lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S bswapsdi2.o \
114 bswapsdi2.S font.o font.c head.o misc.o $(OBJS)
116 # Make sure files are removed during clean
117 extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
118 lib1funcs.S ashldi3.S bswapsdi2.S $(libfdt) $(libfdt_hdrs) \
121 ifeq ($(CONFIG_FUNCTION_TRACER),y)
122 ORIG_CFLAGS := $(KBUILD_CFLAGS)
123 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
126 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
127 asflags-y := -DZIMAGE
129 # Supply kernel BSS size to the decompressor via a linker symbol.
130 KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
131 awk 'END{print $$3}')
132 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
133 # Supply ZRELADDR to the decompressor via a linker symbol.
134 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
135 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
137 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
138 LDFLAGS_vmlinux += --be8
141 LDFLAGS_vmlinux += -p
142 # Report unresolved symbol references
143 LDFLAGS_vmlinux += --no-undefined
144 # Delete all temporary local symbols
145 LDFLAGS_vmlinux += -X
146 # Next argument is a linker script
147 LDFLAGS_vmlinux += -T
149 # For __aeabi_uidivmod
150 lib1funcs = $(obj)/lib1funcs.o
152 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
156 ashldi3 = $(obj)/ashldi3.o
158 $(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
161 # For __bswapsi2, __bswapdi2
162 bswapsdi2 = $(obj)/bswapsdi2.o
164 $(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
167 # We need to prevent any GOTOFF relocs being used with references
168 # to symbols in the .bss section since we cannot relocate them
169 # independently from the rest at run time. This can be achieved by
170 # ensuring that no private .bss symbols exist, as global symbols
171 # always have a GOT entry which is what we need.
172 # The .data section is already discarded by the linker script so no need
173 # to bother about it here.
174 check_for_bad_syms = \
175 bad_syms=$$($(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 )
180 check_for_multiple_zreladdr = \
181 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
182 echo 'multiple zreladdrs: $(ZRELADDR)'; \
183 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
187 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
188 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
190 @$(check_for_multiple_zreladdr)
191 $(call if_changed,ld)
192 @$(check_for_bad_syms)
194 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
195 $(call if_changed,$(suffix_y))
197 $(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
199 CFLAGS_font.o := -Dstatic=
201 $(obj)/font.c: $(FONTC)
204 $(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S