1 # Makefile for making ELF bootable images for booting on CHRP
4 # Geert Uytterhoeven September 1997
6 # Based on coffboot by Paul Mackerras
7 # Simplified for ppc64 by Todd Inglett
9 # NOTE: this code is built for 32 bit in ELF32 format even though
10 # it packages a 64 bit kernel. We do this to simplify the
11 # bootloader and increase compatibility with OpenFirmware.
13 # To this end we need to define BOOTCC, etc, as the tools
14 # needed to build the 32 bit image. These are normally HOSTCC,
15 # but may be a third compiler if, for example, you are cross
16 # compiling from an intel box. Once the 64bit ppc gcc is
17 # stable it will probably simply be a compiler switch to
18 # compile for 32bit mode.
19 # To make it easier to setup a cross compiler,
20 # CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
21 # in the toplevel makefile.
26 BOOTCFLAGS
:= $(HOSTCFLAGS
) -fno-builtin
-nostdinc
-isystem \
27 $(shell $(CROSS32CC
) -print-file-name
=include) -fPIC
28 BOOTAFLAGS
:= -D__ASSEMBLY__
$(BOOTCFLAGS
) -traditional
-nostdinc
30 ifeq ($(call cc-option-yn
, -fstack-protector
),y
)
31 BOOTCFLAGS
+= -fno-stack-protector
34 BOOTCFLAGS
+= -I
$(obj
) -I
$(srctree
)/$(obj
)
36 zlib
:= inffast.c inflate.c inftrees.c
37 zlibheader
:= inffast.h inffixed.h inflate.h inftrees.h infutil.h
38 zliblinuxheader
:= zlib.h zconf.h zutil.h
40 $(addprefix $(obj
)/,$(zlib
) main.o
): $(addprefix $(obj
)/,$(zliblinuxheader
)) \
41 $(addprefix $(obj
)/,$(zlibheader
))
43 src-wlib
:= string.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
44 ns16550.c serial.c simple_alloc.c div64.S util.S
$(zlib
)
46 src-boot
:= crt0.S
$(src-wlib
) $(src-plat
) empty.c
48 src-boot
:= $(addprefix $(obj
)/, $(src-boot
))
49 obj-boot
:= $(addsuffix .o
, $(basename $(src-boot
)))
50 obj-wlib
:= $(addsuffix .o
, $(basename $(addprefix $(obj
)/, $(src-wlib
))))
51 obj-plat
:= $(addsuffix .o
, $(basename $(addprefix $(obj
)/, $(src-plat
))))
53 quiet_cmd_copy_zlib
= COPY
$@
54 cmd_copy_zlib
= sed
"s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
56 quiet_cmd_copy_zlibheader
= COPY
$@
57 cmd_copy_zlibheader
= sed
"s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
59 quiet_cmd_copy_zliblinuxheader
= COPY
$@
60 cmd_copy_zliblinuxheader
= sed
"s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
62 $(addprefix $(obj
)/,$(zlib
)): $(obj
)/%: $(srctree
)/lib
/zlib_inflate
/%
65 $(addprefix $(obj
)/,$(zlibheader
)): $(obj
)/%: $(srctree
)/lib
/zlib_inflate
/%
66 $(call cmd
,copy_zlibheader
)
68 $(addprefix $(obj
)/,$(zliblinuxheader
)): $(obj
)/%: $(srctree
)/include/linux
/%
69 $(call cmd
,copy_zliblinuxheader
)
74 $(obj
)/zImage.lds
$(obj
)/zImage.coff.lds
: $(obj
)/%: $(srctree
)/$(src
)/%.S
77 clean-files
:= $(zlib
) $(zlibheader
) $(zliblinuxheader
) \
78 empty.c zImage zImage.coff.lds zImage.lds zImage.sandpoint
80 quiet_cmd_bootcc
= BOOTCC
$@
81 cmd_bootcc
= $(CROSS32CC
) -Wp
,-MD
,$(depfile
) $(BOOTCFLAGS
) -c
-o
$@
$<
83 quiet_cmd_bootas
= BOOTAS
$@
84 cmd_bootas
= $(CROSS32CC
) -Wp
,-MD
,$(depfile
) $(BOOTAFLAGS
) -c
-o
$@
$<
86 quiet_cmd_bootar
= BOOTAR
$@
87 cmd_bootar
= $(CROSS32AR
) -cr
$@.
$$$$ $^
; mv
$@.
$$$$ $@
89 $(patsubst %.c
,%.o
, $(filter %.c
, $(src-boot
))): %.o
: %.c
90 $(call if_changed_dep
,bootcc
)
91 $(patsubst %.S
,%.o
, $(filter %.S
, $(src-boot
))): %.o
: %.S
92 $(call if_changed_dep
,bootas
)
94 $(obj
)/wrapper.a
: $(obj-wlib
)
97 hostprogs-y
:= addnote addRamDisk hack-coff mktree
99 extra-y
:= $(obj
)/crt0.o
$(obj
)/wrapper.a
$(obj-plat
) $(obj
)/empty.o \
100 $(obj
)/zImage.lds
$(obj
)/zImage.coff.lds
102 wrapper
:=$(srctree
)/$(src
)/wrapper
103 wrapperbits
:= $(extra-y
) $(addprefix $(obj
)/,addnote hack-coff mktree
)
106 # Bits for building various flavours of zImage
108 ifneq ($(CROSS32_COMPILE
),)
109 CROSSWRAP
:= -C
"$(CROSS32_COMPILE)"
111 ifneq ($(CROSS_COMPILE
),)
112 CROSSWRAP
:= -C
"$(CROSS_COMPILE)"
116 quiet_cmd_wrap
= WRAP
$@
117 cmd_wrap
=$(CONFIG_SHELL
) $(wrapper
) -c
-o
$@
-p
$2 $(CROSSWRAP
) vmlinux
118 quiet_cmd_wrap_initrd
= WRAP
$@
119 cmd_wrap_initrd
=$(CONFIG_SHELL
) $(wrapper
) -c
-o
$@
-p
$2 $(CROSSWRAP
) \
120 -i
$(obj
)/ramdisk.image.gz vmlinux
122 $(obj
)/zImage.chrp
: vmlinux
$(wrapperbits
)
123 $(call cmd
,wrap
,chrp
)
125 $(obj
)/zImage.initrd.chrp
: vmlinux
$(wrapperbits
)
126 $(call cmd
,wrap_initrd
,chrp
)
128 $(obj
)/zImage.pseries
: vmlinux
$(wrapperbits
)
129 $(call cmd
,wrap
,pseries
)
131 $(obj
)/zImage.initrd.pseries
: vmlinux
$(wrapperbits
)
132 $(call cmd
,wrap_initrd
,pseries
)
134 $(obj
)/zImage.pmac
: vmlinux
$(wrapperbits
)
135 $(call cmd
,wrap
,pmac
)
137 $(obj
)/zImage.initrd.pmac
: vmlinux
$(wrapperbits
)
138 $(call cmd
,wrap_initrd
,pmac
)
140 $(obj
)/zImage.coff
: vmlinux
$(wrapperbits
)
141 $(call cmd
,wrap
,pmaccoff
)
143 $(obj
)/zImage.initrd.coff
: vmlinux
$(wrapperbits
)
144 $(call cmd
,wrap_initrd
,pmaccoff
)
146 $(obj
)/zImage.miboot
: vmlinux
$(wrapperbits
)
147 $(call cmd
,wrap
,miboot
)
149 $(obj
)/zImage.initrd.miboot
: vmlinux
$(wrapperbits
)
150 $(call cmd
,wrap_initrd
,miboot
)
152 $(obj
)/zImage.ps3
: vmlinux
153 $(STRIP
) -s
-R .comment
$< -o
$@
155 $(obj
)/zImage.initrd.ps3
: vmlinux
156 @echo
" WARNING zImage.initrd.ps3 not supported (yet)"
158 $(obj
)/uImage
: vmlinux
$(wrapperbits
)
159 $(call cmd
,wrap
,uboot
)
161 image-
$(CONFIG_PPC_PSERIES
) += zImage.pseries
162 image-
$(CONFIG_PPC_MAPLE
) += zImage.pseries
163 image-
$(CONFIG_PPC_IBM_CELL_BLADE
) += zImage.pseries
164 image-
$(CONFIG_PPC_PS3
) += zImage.ps3
165 image-
$(CONFIG_PPC_CHRP
) += zImage.chrp
166 image-
$(CONFIG_PPC_EFIKA
) += zImage.chrp
167 image-
$(CONFIG_PPC_PMAC
) += zImage.pmac
168 image-
$(CONFIG_DEFAULT_UIMAGE
) += uImage
170 # For 32-bit powermacs, build the COFF and miboot images
171 # as well as the ELF images.
172 ifeq ($(CONFIG_PPC32
),y
)
173 image-
$(CONFIG_PPC_PMAC
) += zImage.coff zImage.miboot
176 initrd-y
:= $(patsubst zImage
%, zImage.initrd
%, $(image-y
))
178 $(obj
)/zImage
: $(addprefix $(obj
)/, $(image-y
))
180 $(obj
)/zImage.initrd
: $(addprefix $(obj
)/, $(initrd-y
))
183 install: $(CONFIGURE
) $(image-y
)
184 sh
-x
$(srctree
)/$(src
)/install.sh
"$(KERNELRELEASE)" vmlinux System.map
"$(INSTALL_PATH)" $<
186 clean-files
+= $(addprefix $(objtree
)/, $(obj-boot
) vmlinux.
strip.gz
)
187 clean-files
+= $(addprefix $(objtree
)/, $(obj-boot
) vmlinux.bin.gz
)
188 clean-files
+= $(image-
)