xref: /openbmc/linux/arch/arm/boot/compressed/Makefile (revision baa7eb025ab14f3cba2e35c0a8648f9c9f01d24f) 
1#
2# linux/arch/arm/boot/compressed/Makefile
3#
4# create a compressed vmlinuz image from the original vmlinux
5#
6
7AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
8HEAD	= head.o
9OBJS	= misc.o decompress.o
10FONTC	= $(srctree)/drivers/video/console/font_acorn_8x8.c
11
12#
13# Architecture dependencies
14#
15ifeq ($(CONFIG_ARCH_ACORN),y)
16OBJS		+= ll_char_wr.o font.o
17endif
18
19ifeq ($(CONFIG_ARCH_SHARK),y)
20OBJS		+= head-shark.o ofw-shark.o
21endif
22
23ifeq ($(CONFIG_ARCH_P720T),y)
24# Borrow this code from SA1100
25OBJS		+= head-sa1100.o
26endif
27
28ifeq ($(CONFIG_ARCH_SA1100),y)
29OBJS		+= head-sa1100.o
30endif
31
32ifeq ($(CONFIG_CPU_XSCALE),y)
33OBJS		+= head-xscale.o
34endif
35
36ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
37OBJS		+= head-sharpsl.o
38endif
39
40ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
41ifeq ($(CONFIG_CPU_CP15),y)
42OBJS		+= big-endian.o
43else
44# The endian should be set by h/w design.
45endif
46endif
47
48ifeq ($(CONFIG_ARCH_SHMOBILE),y)
49OBJS		+= head-shmobile.o
50endif
51
52#
53# We now have a PIC decompressor implementation.  Decompressors running
54# from RAM should not define ZTEXTADDR.  Decompressors running directly
55# from ROM or Flash must define ZTEXTADDR (preferably via the config)
56# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
57ifeq ($(CONFIG_ZBOOT_ROM),y)
58ZTEXTADDR	:= $(CONFIG_ZBOOT_ROM_TEXT)
59ZBSSADDR	:= $(CONFIG_ZBOOT_ROM_BSS)
60else
61ZTEXTADDR	:= 0
62ZBSSADDR	:= ALIGN(4)
63endif
64
65SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
66
67suffix_$(CONFIG_KERNEL_GZIP) = gzip
68suffix_$(CONFIG_KERNEL_LZO)  = lzo
69suffix_$(CONFIG_KERNEL_LZMA) = lzma
70
71targets       := vmlinux vmlinux.lds \
72		 piggy.$(suffix_y) piggy.$(suffix_y).o \
73		 font.o font.c head.o misc.o $(OBJS)
74
75# Make sure files are removed during clean
76extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
77
78ifeq ($(CONFIG_FUNCTION_TRACER),y)
79ORIG_CFLAGS := $(KBUILD_CFLAGS)
80KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
81endif
82
83EXTRA_CFLAGS  := -fpic -fno-builtin
84EXTRA_AFLAGS  := -Wa,-march=all
85
86# Supply ZRELADDR to the decompressor via a linker symbol.
87ifneq ($(CONFIG_AUTO_ZRELADDR),y)
88LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR)
89endif
90ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
91LDFLAGS_vmlinux += --be8
92endif
93# ?
94LDFLAGS_vmlinux += -p
95# Report unresolved symbol references
96LDFLAGS_vmlinux += --no-undefined
97# Delete all temporary local symbols
98LDFLAGS_vmlinux += -X
99# Next argument is a linker script
100LDFLAGS_vmlinux += -T
101
102# For __aeabi_uidivmod
103lib1funcs = $(obj)/lib1funcs.o
104
105$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
106	$(call cmd,shipped)
107
108$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
109	 	$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
110	$(call if_changed,ld)
111	@:
112
113$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
114	$(call if_changed,$(suffix_y))
115
116$(obj)/piggy.$(suffix_y).o:  $(obj)/piggy.$(suffix_y) FORCE
117
118CFLAGS_font.o := -Dstatic=
119
120$(obj)/font.c: $(FONTC)
121	$(call cmd,shipped)
122
123$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile $(KCONFIG_CONFIG)
124	@sed "$(SEDFLAGS)" < $< > $@
125