xref: /linux/arch/arm/boot/compressed/Makefile (revision f45b1149911cc4c3ab50e56c8844ad4ec04a4575) 
1#
2# linux/arch/arm/boot/compressed/Makefile
3#
4# create a compressed vmlinuz image from the original vmlinux
5#
6
7OBJS		=
8
9# Ensure that mmcif loader code appears early in the image
10# to minimise that number of bocks that have to be read in
11# order to load it.
12ifeq ($(CONFIG_ZBOOT_ROM_MMCIF),y)
13ifeq ($(CONFIG_ARCH_SH7372),y)
14OBJS		+= mmcif-sh7372.o
15endif
16endif
17
18AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
19HEAD	= head.o
20OBJS	+= misc.o decompress.o
21FONTC	= $(srctree)/drivers/video/console/font_acorn_8x8.c
22
23#
24# Architecture dependencies
25#
26ifeq ($(CONFIG_ARCH_ACORN),y)
27OBJS		+= ll_char_wr.o font.o
28endif
29
30ifeq ($(CONFIG_ARCH_SHARK),y)
31OBJS		+= head-shark.o ofw-shark.o
32endif
33
34ifeq ($(CONFIG_ARCH_P720T),y)
35# Borrow this code from SA1100
36OBJS		+= head-sa1100.o
37endif
38
39ifeq ($(CONFIG_ARCH_SA1100),y)
40OBJS		+= head-sa1100.o
41endif
42
43ifeq ($(CONFIG_CPU_XSCALE),y)
44OBJS		+= head-xscale.o
45endif
46
47ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
48OBJS		+= head-sharpsl.o
49endif
50
51ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
52ifeq ($(CONFIG_CPU_CP15),y)
53OBJS		+= big-endian.o
54else
55# The endian should be set by h/w design.
56endif
57endif
58
59ifeq ($(CONFIG_ARCH_SHMOBILE),y)
60OBJS		+= head-shmobile.o
61endif
62
63#
64# We now have a PIC decompressor implementation.  Decompressors running
65# from RAM should not define ZTEXTADDR.  Decompressors running directly
66# from ROM or Flash must define ZTEXTADDR (preferably via the config)
67# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
68ifeq ($(CONFIG_ZBOOT_ROM),y)
69ZTEXTADDR	:= $(CONFIG_ZBOOT_ROM_TEXT)
70ZBSSADDR	:= $(CONFIG_ZBOOT_ROM_BSS)
71else
72ZTEXTADDR	:= 0
73ZBSSADDR	:= ALIGN(4)
74endif
75
76SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
77
78suffix_$(CONFIG_KERNEL_GZIP) = gzip
79suffix_$(CONFIG_KERNEL_LZO)  = lzo
80suffix_$(CONFIG_KERNEL_LZMA) = lzma
81
82targets       := vmlinux vmlinux.lds \
83		 piggy.$(suffix_y) piggy.$(suffix_y).o \
84		 font.o font.c head.o misc.o $(OBJS)
85
86# Make sure files are removed during clean
87extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
88
89ifeq ($(CONFIG_FUNCTION_TRACER),y)
90ORIG_CFLAGS := $(KBUILD_CFLAGS)
91KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
92endif
93
94EXTRA_CFLAGS  := -fpic -fno-builtin
95EXTRA_AFLAGS  := -Wa,-march=all
96
97# Supply ZRELADDR to the decompressor via a linker symbol.
98ifneq ($(CONFIG_AUTO_ZRELADDR),y)
99LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR)
100endif
101ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
102LDFLAGS_vmlinux += --be8
103endif
104# ?
105LDFLAGS_vmlinux += -p
106# Report unresolved symbol references
107LDFLAGS_vmlinux += --no-undefined
108# Delete all temporary local symbols
109LDFLAGS_vmlinux += -X
110# Next argument is a linker script
111LDFLAGS_vmlinux += -T
112
113# For __aeabi_uidivmod
114lib1funcs = $(obj)/lib1funcs.o
115
116$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
117	$(call cmd,shipped)
118
119$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
120	 	$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
121	$(call if_changed,ld)
122	@:
123
124$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
125	$(call if_changed,$(suffix_y))
126
127$(obj)/piggy.$(suffix_y).o:  $(obj)/piggy.$(suffix_y) FORCE
128
129CFLAGS_font.o := -Dstatic=
130
131$(obj)/font.c: $(FONTC)
132	$(call cmd,shipped)
133
134$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
135	@sed "$(SEDFLAGS)" < $< > $@
136