xref: /linux/arch/arm/boot/compressed/Makefile (revision f1b957d3a06826f4a30fd4440e54a6b87c2e6173) 
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 decompress.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_$(CONFIG_KERNEL_LZO)  = lzo
68suffix_$(CONFIG_KERNEL_LZMA) = lzma
69
70targets       := vmlinux vmlinux.lds \
71		 piggy.$(suffix_y) piggy.$(suffix_y).o \
72		 font.o font.c head.o misc.o $(OBJS)
73
74# Make sure files are removed during clean
75extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
76
77ifeq ($(CONFIG_FUNCTION_TRACER),y)
78ORIG_CFLAGS := $(KBUILD_CFLAGS)
79KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
80endif
81
82EXTRA_CFLAGS  := -fpic -fno-builtin
83EXTRA_AFLAGS  := -Wa,-march=all
84
85# Supply ZRELADDR, INITRD_PHYS and PARAMS_PHYS to the decompressor via
86# linker symbols.  We only define initrd_phys and params_phys if the
87# machine class defined the corresponding makefile variable.
88LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR)
89ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
90LDFLAGS_vmlinux += --be8
91endif
92ifneq ($(INITRD_PHYS),)
93LDFLAGS_vmlinux += --defsym initrd_phys=$(INITRD_PHYS)
94endif
95ifneq ($(PARAMS_PHYS),)
96LDFLAGS_vmlinux += --defsym params_phys=$(PARAMS_PHYS)
97endif
98# ?
99LDFLAGS_vmlinux += -p
100# Report unresolved symbol references
101LDFLAGS_vmlinux += --no-undefined
102# Delete all temporary local symbols
103LDFLAGS_vmlinux += -X
104# Next argument is a linker script
105LDFLAGS_vmlinux += -T
106
107# For __aeabi_uidivmod
108lib1funcs = $(obj)/lib1funcs.o
109
110$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
111	$(call cmd,shipped)
112
113$(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