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_KERNEL_LZ4),y)
28 CFLAGS_decompress.o := -Os
30 ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
33 FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
35 # string library code (-Os is enforced to keep it much smaller)
37 CFLAGS_string.o := -Os
39 ifeq ($(CONFIG_ARM_VIRT_EXT),y)
44 # Architecture dependencies
46 ifeq ($(CONFIG_ARCH_ACORN),y)
47 OBJS += ll_char_wr.o font.o
50 ifeq ($(CONFIG_ARCH_SHARK),y)
51 OBJS += head-shark.o ofw-shark.o
54 ifeq ($(CONFIG_ARCH_SA1100),y)
58 ifeq ($(CONFIG_CPU_XSCALE),y)
62 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
63 OBJS += head-sharpsl.o
66 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
67 ifeq ($(CONFIG_CPU_CP15),y)
70 # The endian should be set by h/w design.
74 ifeq ($(CONFIG_ARCH_SHMOBILE),y)
75 OBJS += head-shmobile.o
79 # We now have a PIC decompressor implementation. Decompressors running
80 # from RAM should not define ZTEXTADDR. Decompressors running directly
81 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
82 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
83 ifeq ($(CONFIG_ZBOOT_ROM),y)
84 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
85 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
91 SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
93 suffix_$(CONFIG_KERNEL_GZIP) = gzip
94 suffix_$(CONFIG_KERNEL_LZO) = lzo
95 suffix_$(CONFIG_KERNEL_LZMA) = lzma
96 suffix_$(CONFIG_KERNEL_XZ) = xzkern
97 suffix_$(CONFIG_KERNEL_LZ4) = lz4
99 # Borrowed libfdt files for the ATAG compatibility mode
101 libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
102 libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
104 libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
106 $(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
109 $(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
110 $(addprefix $(obj)/,$(libfdt_hdrs))
112 ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
113 OBJS += $(libfdt_objs) atags_to_fdt.o
116 targets := vmlinux vmlinux.lds \
117 piggy.$(suffix_y) piggy.$(suffix_y).o \
118 lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S \
119 font.o font.c head.o misc.o $(OBJS)
121 # Make sure files are removed during clean
122 extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
123 lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs)
125 ifeq ($(CONFIG_FUNCTION_TRACER),y)
126 ORIG_CFLAGS := $(KBUILD_CFLAGS)
127 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
130 ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
131 asflags-y := -Wa,-march=all -DZIMAGE
133 # Supply kernel BSS size to the decompressor via a linker symbol.
134 KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
135 awk 'END{print $$3}')
136 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
137 # Supply ZRELADDR to the decompressor via a linker symbol.
138 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
139 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
141 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
142 LDFLAGS_vmlinux += --be8
145 LDFLAGS_vmlinux += -p
146 # Report unresolved symbol references
147 LDFLAGS_vmlinux += --no-undefined
148 # Delete all temporary local symbols
149 LDFLAGS_vmlinux += -X
150 # Next argument is a linker script
151 LDFLAGS_vmlinux += -T
153 # For __aeabi_uidivmod
154 lib1funcs = $(obj)/lib1funcs.o
156 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
160 ashldi3 = $(obj)/ashldi3.o
162 $(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
165 # We need to prevent any GOTOFF relocs being used with references
166 # to symbols in the .bss section since we cannot relocate them
167 # independently from the rest at run time. This can be achieved by
168 # ensuring that no private .bss symbols exist, as global symbols
169 # always have a GOT entry which is what we need.
170 # The .data section is already discarded by the linker script so no need
171 # to bother about it here.
172 check_for_bad_syms = \
173 bad_syms=$$($(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) $(ashldi3) FORCE
187 @$(check_for_multiple_zreladdr)
188 $(call if_changed,ld)
189 @$(check_for_bad_syms)
191 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
192 $(call if_changed,$(suffix_y))
194 $(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
196 CFLAGS_font.o := -Dstatic=
198 $(obj)/font.c: $(FONTC)
201 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
202 @sed "$(SEDFLAGS)" < $< > $@
204 $(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S