xref: /linux/arch/arm/boot/compressed/Makefile (revision e7db7b4270ed2a606b8c0b5f944a5f92ade0e84c) 
1#
2# linux/arch/arm/boot/compressed/Makefile
3#
4# create a compressed vmlinuz image from the original vmlinux
5#
6
7HEAD	= head.o
8OBJS	= misc.o
9FONTC	= $(srctree)/drivers/video/console/font_acorn_8x8.c
10
11#
12# Architecture dependencies
13#
14ifeq ($(CONFIG_ARCH_ACORN),y)
15OBJS		+= ll_char_wr.o font.o
16endif
17
18ifeq ($(CONFIG_ARCH_SHARK),y)
19OBJS		+= head-shark.o ofw-shark.o
20endif
21
22ifeq ($(CONFIG_ARCH_L7200),y)
23OBJS		+= head-l7200.o
24endif
25
26ifeq ($(CONFIG_ARCH_P720T),y)
27# Borrow this code from SA1100
28OBJS		+= head-sa1100.o
29endif
30
31ifeq ($(CONFIG_ARCH_SA1100),y)
32OBJS		+= head-sa1100.o
33endif
34
35ifeq ($(CONFIG_CPU_XSCALE),y)
36OBJS		+= head-xscale.o
37endif
38
39ifeq ($(CONFIG_PXA_SHARPSL),y)
40OBJS		+= head-sharpsl.o
41endif
42
43ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
44ifeq ($(CONFIG_CPU_CP15),y)
45OBJS		+= big-endian.o
46else
47# The endian should be set by h/w design.
48endif
49endif
50
51#
52# We now have a PIC decompressor implementation.  Decompressors running
53# from RAM should not define ZTEXTADDR.  Decompressors running directly
54# from ROM or Flash must define ZTEXTADDR (preferably via the config)
55# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
56ifeq ($(CONFIG_ZBOOT_ROM),y)
57ZTEXTADDR	:= $(CONFIG_ZBOOT_ROM_TEXT)
58ZBSSADDR	:= $(CONFIG_ZBOOT_ROM_BSS)
59else
60ZTEXTADDR	:= 0
61ZBSSADDR	:= ALIGN(4)
62endif
63
64SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
65
66suffix_$(CONFIG_KERNEL_GZIP) = gzip
67suffix_$(CONFIG_KERNEL_LZO)  = lzo
68
69targets       := vmlinux vmlinux.lds \
70		 piggy.$(suffix_y) piggy.$(suffix_y).o \
71		 font.o font.c head.o misc.o $(OBJS)
72
73ifeq ($(CONFIG_FUNCTION_TRACER),y)
74ORIG_CFLAGS := $(KBUILD_CFLAGS)
75KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
76endif
77
78EXTRA_CFLAGS  := -fpic -fno-builtin
79EXTRA_AFLAGS  := -Wa,-march=all
80
81# Supply ZRELADDR, INITRD_PHYS and PARAMS_PHYS to the decompressor via
82# linker symbols.  We only define initrd_phys and params_phys if the
83# machine class defined the corresponding makefile variable.
84LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR)
85ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
86LDFLAGS_vmlinux += --be8
87endif
88ifneq ($(INITRD_PHYS),)
89LDFLAGS_vmlinux += --defsym initrd_phys=$(INITRD_PHYS)
90endif
91ifneq ($(PARAMS_PHYS),)
92LDFLAGS_vmlinux += --defsym params_phys=$(PARAMS_PHYS)
93endif
94# ?
95LDFLAGS_vmlinux += -p
96# Report unresolved symbol references
97LDFLAGS_vmlinux += --no-undefined
98# Delete all temporary local symbols
99LDFLAGS_vmlinux += -X
100# Next argument is a linker script
101LDFLAGS_vmlinux += -T
102
103# For __aeabi_uidivmod
104lib1funcs = $(obj)/lib1funcs.o
105
106$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
107	$(call cmd,shipped)
108
109# Don't allow any static data in misc.o, which
110# would otherwise mess up our GOT table
111CFLAGS_misc.o := -Dstatic=
112
113$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
114	 	$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
115	$(call if_changed,ld)
116	@:
117
118$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
119	$(call if_changed,$(suffix_y))
120
121$(obj)/piggy.$(suffix_y).o:  $(obj)/piggy.$(suffix_y) FORCE
122
123CFLAGS_font.o := -Dstatic=
124
125$(obj)/font.c: $(FONTC)
126	$(call cmd,shipped)
127
128$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile .config
129	@sed "$(SEDFLAGS)" < $< > $@
130