blob: 7a13aebacf81d47cf06efb3979956491a940cb90 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# linux/arch/arm/boot/compressed/Makefile
3#
4# create a compressed vmlinuz image from the original vmlinux
5#
6
Simon Hormanf45b1142011-01-11 04:01:08 +01007OBJS =
8
Eric Miaoe69edc792010-07-05 15:56:50 +02009AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
Linus Torvalds1da177e2005-04-16 15:20:36 -070010HEAD = head.o
Simon Hormanf45b1142011-01-11 04:01:08 +010011OBJS += misc.o decompress.o
Shawn Guo3b4af9b2013-03-14 08:48:06 +010012ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
13OBJS += debug.o
14endif
Geert Uytterhoevenee89bd62013-06-09 11:46:43 +020015FONTC = $(srctree)/lib/fonts/font_acorn_8x8.c
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
Nicolas Pitredf4879f2011-09-13 21:42:55 -040017# string library code (-Os is enforced to keep it much smaller)
18OBJS += string.o
19CFLAGS_string.o := -Os
20
Dave Martin424e5992012-02-10 18:07:07 -080021ifeq ($(CONFIG_ARM_VIRT_EXT),y)
22OBJS += hyp-stub.o
23endif
24
Vincent Sanders75c34902014-09-18 20:39:15 +010025GCOV_PROFILE := n
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#
28# Architecture dependencies
29#
30ifeq ($(CONFIG_ARCH_ACORN),y)
Russell King4486b862007-06-03 18:54:42 +010031OBJS += ll_char_wr.o font.o
Linus Torvalds1da177e2005-04-16 15:20:36 -070032endif
33
Linus Torvalds1da177e2005-04-16 15:20:36 -070034ifeq ($(CONFIG_ARCH_SA1100),y)
35OBJS += head-sa1100.o
36endif
37
38ifeq ($(CONFIG_CPU_XSCALE),y)
39OBJS += head-xscale.o
40endif
41
Eric Miao9c3fca22010-06-23 09:27:32 +080042ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070043OBJS += head-sharpsl.o
44endif
45
Catalin Marinas26584852009-05-30 14:00:18 +010046ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
Hyok S. Choif12d0d72006-09-26 17:36:37 +090047ifeq ($(CONFIG_CPU_CP15),y)
Linus Torvalds1da177e2005-04-16 15:20:36 -070048OBJS += big-endian.o
Hyok S. Choif12d0d72006-09-26 17:36:37 +090049else
50# The endian should be set by h/w design.
51endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070052endif
53
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +010054ifeq ($(CONFIG_ARCH_SHMOBILE_LEGACY),y)
Kuninori Morimoto9a4af112010-12-01 07:45:00 +010055OBJS += head-shmobile.o
56endif
57
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#
59# We now have a PIC decompressor implementation. Decompressors running
60# from RAM should not define ZTEXTADDR. Decompressors running directly
61# from ROM or Flash must define ZTEXTADDR (preferably via the config)
62# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
63ifeq ($(CONFIG_ZBOOT_ROM),y)
64ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
65ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
66else
67ZTEXTADDR := 0
Nicolas Pitre3bd2cbb2011-04-21 21:45:08 -040068ZBSSADDR := ALIGN(8)
Linus Torvalds1da177e2005-04-16 15:20:36 -070069endif
70
Russell Kingc79bf922014-06-17 15:00:54 +010071CPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTADDR)" -DBSS_START="$(ZBSSADDR)"
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Albin Tonnerree7db7b42010-01-08 14:42:43 -080073suffix_$(CONFIG_KERNEL_GZIP) = gzip
74suffix_$(CONFIG_KERNEL_LZO) = lzo
Albin Tonnerre6e8699f2010-04-03 11:40:28 +010075suffix_$(CONFIG_KERNEL_LZMA) = lzma
Imre Kaloza7f464f2012-01-26 13:08:57 +010076suffix_$(CONFIG_KERNEL_XZ) = xzkern
Kyungsik Leef9b493a2013-07-08 16:01:48 -070077suffix_$(CONFIG_KERNEL_LZ4) = lz4
Albin Tonnerree7db7b42010-01-08 14:42:43 -080078
Nicolas Pitreb90b9a32011-09-13 22:37:07 -040079# Borrowed libfdt files for the ATAG compatibility mode
80
81libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
82libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
83
84libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
85
86$(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
87 $(call cmd,shipped)
88
89$(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
90 $(addprefix $(obj)/,$(libfdt_hdrs))
91
92ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
93OBJS += $(libfdt_objs) atags_to_fdt.o
94endif
95
Albin Tonnerree7db7b42010-01-08 14:42:43 -080096targets := vmlinux vmlinux.lds \
97 piggy.$(suffix_y) piggy.$(suffix_y).o \
Kim Phillips017f1612013-11-06 05:15:24 +010098 lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S bswapsdi2.o \
99 bswapsdi2.S font.o font.c head.o misc.o $(OBJS)
Abhishek Sagar014c2572008-05-31 14:23:50 +0530100
Magnus Dammf1b957d2010-07-28 05:46:21 +0100101# Make sure files are removed during clean
Kyungsik Leef9b493a2013-07-08 16:01:48 -0700102extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
Kim Phillips017f1612013-11-06 05:15:24 +0100103 lib1funcs.S ashldi3.S bswapsdi2.S $(libfdt) $(libfdt_hdrs) \
Russell Kingc79bf922014-06-17 15:00:54 +0100104 hyp-stub.S
Magnus Dammf1b957d2010-07-28 05:46:21 +0100105
Arnd Bergmann8c36a752015-05-26 15:39:36 +0100106KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
107
Steven Rostedt606576c2008-10-06 19:06:12 -0400108ifeq ($(CONFIG_FUNCTION_TRACER),y)
Abhishek Sagar014c2572008-05-31 14:23:50 +0530109ORIG_CFLAGS := $(KBUILD_CFLAGS)
110KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
111endif
112
Jonathan Austinb8083f82013-03-04 15:17:36 +0100113ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
Arnd Bergmannda94a822013-05-31 22:50:47 +0100114asflags-y := -DZIMAGE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
Nicolas Pitre5ffb04f2011-06-12 01:07:33 -0400116# Supply kernel BSS size to the decompressor via a linker symbol.
Janusz Krzysztofik1ec332a2011-12-01 22:45:47 +0100117KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
118 awk 'END{print $$3}')
Nicolas Pitre5ffb04f2011-06-12 01:07:33 -0400119LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
Russell King9e84ed62010-09-09 22:39:41 +0100120# Supply ZRELADDR to the decompressor via a linker symbol.
121ifneq ($(CONFIG_AUTO_ZRELADDR),y)
Nicolas Pitred239b1d2011-02-21 04:57:38 +0100122LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
Russell King9e84ed62010-09-09 22:39:41 +0100123endif
Catalin Marinas26584852009-05-30 14:00:18 +0100124ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
125LDFLAGS_vmlinux += --be8
126endif
Albin Tonnerree7db7b42010-01-08 14:42:43 -0800127# ?
128LDFLAGS_vmlinux += -p
129# Report unresolved symbol references
130LDFLAGS_vmlinux += --no-undefined
131# Delete all temporary local symbols
132LDFLAGS_vmlinux += -X
133# Next argument is a linker script
134LDFLAGS_vmlinux += -T
135
136# For __aeabi_uidivmod
137lib1funcs = $(obj)/lib1funcs.o
138
Nicolas Pitre63d15142011-09-14 00:16:21 -0400139$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
Albin Tonnerree7db7b42010-01-08 14:42:43 -0800140 $(call cmd,shipped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
Imre Kaloza7f464f2012-01-26 13:08:57 +0100142# For __aeabi_llsl
143ashldi3 = $(obj)/ashldi3.o
144
145$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
146 $(call cmd,shipped)
147
Kim Phillips017f1612013-11-06 05:15:24 +0100148# For __bswapsi2, __bswapdi2
149bswapsdi2 = $(obj)/bswapsdi2.o
150
151$(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
152 $(call cmd,shipped)
153
Nicolas Pitre8d7e4cc2011-04-27 14:54:39 -0400154# We need to prevent any GOTOFF relocs being used with references
155# to symbols in the .bss section since we cannot relocate them
156# independently from the rest at run time. This can be achieved by
157# ensuring that no private .bss symbols exist, as global symbols
158# always have a GOT entry which is what we need.
159# The .data section is already discarded by the linker script so no need
160# to bother about it here.
161check_for_bad_syms = \
162bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
163[ -z "$$bad_syms" ] || \
164 ( echo "following symbols must have non local/private scope:" >&2; \
165 echo "$$bad_syms" >&2; rm -f $@; false )
166
Sascha Hauer60aac932011-08-17 14:22:11 +0100167check_for_multiple_zreladdr = \
Rabin Vincent4bdad982011-10-04 14:33:34 +0100168if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
Sascha Hauer60aac932011-08-17 14:22:11 +0100169 echo 'multiple zreladdrs: $(ZRELADDR)'; \
170 echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
171 false; \
172fi
173
Albin Tonnerree7db7b42010-01-08 14:42:43 -0800174$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
Kim Phillips017f1612013-11-06 05:15:24 +0100175 $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
176 $(bswapsdi2) FORCE
Sascha Hauer60aac932011-08-17 14:22:11 +0100177 @$(check_for_multiple_zreladdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 $(call if_changed,ld)
Nicolas Pitre8d7e4cc2011-04-27 14:54:39 -0400179 @$(check_for_bad_syms)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Albin Tonnerree7db7b42010-01-08 14:42:43 -0800181$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
182 $(call if_changed,$(suffix_y))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Albin Tonnerree7db7b42010-01-08 14:42:43 -0800184$(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Russell King4486b862007-06-03 18:54:42 +0100186CFLAGS_font.o := -Dstatic=
187
188$(obj)/font.c: $(FONTC)
189 $(call cmd,shipped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
Dave Martin424e5992012-02-10 18:07:07 -0800191$(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S
192 $(call cmd,shipped)