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 FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
29 # string library code (-Os is enforced to keep it much smaller)
31 CFLAGS_string.o := -Os
34 # Architecture dependencies
36 ifeq ($(CONFIG_ARCH_ACORN),y)
37 OBJS += ll_char_wr.o font.o
40 ifeq ($(CONFIG_ARCH_SHARK),y)
41 OBJS += head-shark.o ofw-shark.o
44 ifeq ($(CONFIG_ARCH_P720T),y)
45 # Borrow this code from SA1100
49 ifeq ($(CONFIG_ARCH_SA1100),y)
53 ifeq ($(CONFIG_ARCH_VT8500),y)
57 ifeq ($(CONFIG_CPU_XSCALE),y)
61 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
62 OBJS += head-sharpsl.o
65 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
66 ifeq ($(CONFIG_CPU_CP15),y)
69 # The endian should be set by h/w design.
73 ifeq ($(CONFIG_ARCH_SHMOBILE),y)
74 OBJS += head-shmobile.o
78 # We now have a PIC decompressor implementation. Decompressors running
79 # from RAM should not define ZTEXTADDR. Decompressors running directly
80 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
81 # FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
82 ifeq ($(CONFIG_ZBOOT_ROM),y)
83 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
84 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
90 SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
92 suffix_$(CONFIG_KERNEL_GZIP) = gzip
93 suffix_$(CONFIG_KERNEL_LZO) = lzo
94 suffix_$(CONFIG_KERNEL_LZMA) = lzma
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 font.o font.c head.o misc.o $(OBJS)
117 # Make sure files are removed during clean
118 extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S $(libfdt) $(libfdt_hdrs)
120 ifeq ($(CONFIG_FUNCTION_TRACER),y)
121 ORIG_CFLAGS := $(KBUILD_CFLAGS)
122 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
125 ccflags-y := -fpic -fno-builtin -I$(obj)
126 asflags-y := -Wa,-march=all
128 # Supply kernel BSS size to the decompressor via a linker symbol.
129 KBSS_SZ = $(shell size $(obj)/../../../../vmlinux | awk 'END{print $$3}')
130 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
131 # Supply ZRELADDR to the decompressor via a linker symbol.
132 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
133 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
135 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
136 LDFLAGS_vmlinux += --be8
139 LDFLAGS_vmlinux += -p
140 # Report unresolved symbol references
141 LDFLAGS_vmlinux += --no-undefined
142 # Delete all temporary local symbols
143 LDFLAGS_vmlinux += -X
144 # Next argument is a linker script
145 LDFLAGS_vmlinux += -T
147 # For __aeabi_uidivmod
148 lib1funcs = $(obj)/lib1funcs.o
150 $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
153 # We need to prevent any GOTOFF relocs being used with references
154 # to symbols in the .bss section since we cannot relocate them
155 # independently from the rest at run time. This can be achieved by
156 # ensuring that no private .bss symbols exist, as global symbols
157 # always have a GOT entry which is what we need.
158 # The .data section is already discarded by the linker script so no need
159 # to bother about it here.
160 check_for_bad_syms = \
161 bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
162 [ -z "$$bad_syms" ] || \
163 ( echo "following symbols must have non local/private scope:" >&2; \
164 echo "$$bad_syms" >&2; rm -f $@; false )
166 check_for_multiple_zreladdr = \
167 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
168 echo 'multiple zreladdrs: $(ZRELADDR)'; \
169 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
173 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
174 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
175 @$(check_for_multiple_zreladdr)
176 $(call if_changed,ld)
177 @$(check_for_bad_syms)
179 $(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
180 $(call if_changed,$(suffix_y))
182 $(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
184 CFLAGS_font.o := -Dstatic=
186 $(obj)/font.c: $(FONTC)
189 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
190 @sed "$(SEDFLAGS)" < $< > $@