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. That's normally the same
15 # compiler for the rest of the kernel, with the -m32 flag added.
16 # To make it easier to setup a cross compiler,
17 # CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
18 # in the toplevel makefile.
22 BOOTCFLAGS
:= -Wall
-Wundef
-Wstrict-prototypes
-Wno-trigraphs \
23 -fno-strict-aliasing
-Os
-msoft-float
-pipe \
24 -fomit-frame-pointer
-fno-builtin
-fPIC
-nostdinc \
25 -isystem
$(shell $(CROSS32CC
) -print-file-name
=include)
26 BOOTAFLAGS
:= -D__ASSEMBLY__
$(BOOTCFLAGS
) -traditional
-nostdinc
28 ifeq ($(call cc-option-yn
, -fstack-protector
),y
)
29 BOOTCFLAGS
+= -fno-stack-protector
32 BOOTCFLAGS
+= -I
$(obj
) -I
$(srctree
)/$(obj
)
34 $(obj
)/4xx.o
: BOOTCFLAGS
+= -mcpu
=440
35 $(obj
)/ebony.o
: BOOTCFLAGS
+= -mcpu
=440
37 zlib
:= inffast.c inflate.c inftrees.c
38 zlibheader
:= inffast.h inffixed.h inflate.h inftrees.h infutil.h
39 zliblinuxheader
:= zlib.h zconf.h zutil.h
41 $(addprefix $(obj
)/,$(zlib
) gunzip_util.o main.o
): \
42 $(addprefix $(obj
)/,$(zliblinuxheader
)) $(addprefix $(obj
)/,$(zlibheader
))
44 src-wlib
:= string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
45 ns16550.c serial.c simple_alloc.c div64.S util.S \
46 gunzip_util.c elf_util.c
$(zlib
) devtree.c oflib.c ofconsole.c \
47 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
49 src-plat
:= of.c cuboot-83xx.c cuboot-85xx.c holly.c \
50 cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
51 ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
52 cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c
53 src-boot
:= $(src-wlib
) $(src-plat
) empty.c
55 src-boot
:= $(addprefix $(obj
)/, $(src-boot
))
56 obj-boot
:= $(addsuffix .o
, $(basename $(src-boot
)))
57 obj-wlib
:= $(addsuffix .o
, $(basename $(addprefix $(obj
)/, $(src-wlib
))))
58 obj-plat
:= $(addsuffix .o
, $(basename $(addprefix $(obj
)/, $(src-plat
))))
60 quiet_cmd_copy_zlib
= COPY
$@
61 cmd_copy_zlib
= sed
"s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
63 quiet_cmd_copy_zlibheader
= COPY
$@
64 cmd_copy_zlibheader
= sed
"s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
66 quiet_cmd_copy_zliblinuxheader
= COPY
$@
67 cmd_copy_zliblinuxheader
= sed
"s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
69 $(addprefix $(obj
)/,$(zlib
)): $(obj
)/%: $(srctree
)/lib
/zlib_inflate
/%
72 $(addprefix $(obj
)/,$(zlibheader
)): $(obj
)/%: $(srctree
)/lib
/zlib_inflate
/%
73 $(call cmd
,copy_zlibheader
)
75 $(addprefix $(obj
)/,$(zliblinuxheader
)): $(obj
)/%: $(srctree
)/include/linux
/%
76 $(call cmd
,copy_zliblinuxheader
)
81 $(obj
)/zImage.lds
$(obj
)/zImage.coff.lds
$(obj
)/zImage.ps3.lds
: $(obj
)/%: $(srctree
)/$(src
)/%.S
84 clean-files
:= $(zlib
) $(zlibheader
) $(zliblinuxheader
) \
85 empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds
87 quiet_cmd_bootcc
= BOOTCC
$@
88 cmd_bootcc
= $(CROSS32CC
) -Wp
,-MD
,$(depfile
) $(BOOTCFLAGS
) -c
-o
$@
$<
90 quiet_cmd_bootas
= BOOTAS
$@
91 cmd_bootas
= $(CROSS32CC
) -Wp
,-MD
,$(depfile
) $(BOOTAFLAGS
) -c
-o
$@
$<
93 quiet_cmd_bootar
= BOOTAR
$@
94 cmd_bootar
= $(CROSS32AR
) -cr
$@.
$$$$ $(filter-out FORCE
,$^
); mv
$@.
$$$$ $@
96 $(patsubst %.c
,%.o
, $(filter %.c
, $(src-boot
))): %.o
: %.c FORCE
97 $(call if_changed_dep
,bootcc
)
98 $(patsubst %.S
,%.o
, $(filter %.S
, $(src-boot
))): %.o
: %.S FORCE
99 $(call if_changed_dep
,bootas
)
101 $(obj
)/wrapper.a
: $(obj-wlib
) FORCE
102 $(call if_changed
,bootar
)
104 hostprogs-y
:= addnote addRamDisk hack-coff mktree
106 targets
+= $(patsubst $(obj
)/%,%,$(obj-boot
) wrapper.a
)
107 extra-y
:= $(obj
)/wrapper.a
$(obj-plat
) $(obj
)/empty.o \
108 $(obj
)/zImage.lds
$(obj
)/zImage.coff.lds
$(obj
)/zImage.ps3.lds
110 wrapper
:=$(srctree
)/$(src
)/wrapper
111 wrapperbits
:= $(extra-y
) $(addprefix $(obj
)/,addnote hack-coff mktree
) \
115 # Bits for building various flavours of zImage
117 ifneq ($(CROSS32_COMPILE
),)
118 CROSSWRAP
:= -C
"$(CROSS32_COMPILE)"
120 ifneq ($(CROSS_COMPILE
),)
121 CROSSWRAP
:= -C
"$(CROSS_COMPILE)"
125 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
126 quiet_cmd_wrap
= WRAP
$@
127 cmd_wrap
=$(CONFIG_SHELL
) $(wrapper
) -c
-o
$@
-p
$2 $(CROSSWRAP
) \
128 $(if
$3, -s
$3)$(if
$4, -d
$4)$(if
$5, -i
$5) vmlinux
130 image-
$(CONFIG_PPC_PSERIES
) += zImage.pseries
131 image-
$(CONFIG_PPC_MAPLE
) += zImage.pseries
132 image-
$(CONFIG_PPC_IBM_CELL_BLADE
) += zImage.pseries
133 image-
$(CONFIG_PPC_PS3
) += zImage.ps3
134 image-
$(CONFIG_PPC_CELLEB
) += zImage.pseries
135 image-
$(CONFIG_PPC_CHRP
) += zImage.chrp
136 image-
$(CONFIG_PPC_EFIKA
) += zImage.chrp
137 image-
$(CONFIG_PPC_PMAC
) += zImage.pmac
138 image-
$(CONFIG_PPC_HOLLY
) += zImage.holly
139 image-
$(CONFIG_PPC_PRPMC2800
) += zImage.prpmc2800
140 image-
$(CONFIG_PPC_ISERIES
) += zImage.iseries
141 image-
$(CONFIG_DEFAULT_UIMAGE
) += uImage
143 ifneq ($(CONFIG_DEVICE_TREE
),"")
144 image-
$(CONFIG_PPC_8xx
) += cuImage
.8xx
145 image-
$(CONFIG_8260
) += cuImage.pq2
146 image-
$(CONFIG_PPC_83xx
) += cuImage
.83xx
147 image-
$(CONFIG_PPC_85xx
) += cuImage
.85xx
148 image-
$(CONFIG_EBONY
) += treeImage.ebony cuImage.ebony
149 image-
$(CONFIG_BAMBOO
) += treeImage.bamboo cuImage.bamboo
150 image-
$(CONFIG_SEQUOIA
) += cuImage.sequoia
151 image-
$(CONFIG_WALNUT
) += treeImage.walnut
154 # For 32-bit powermacs, build the COFF and miboot images
155 # as well as the ELF images.
156 ifeq ($(CONFIG_PPC32
),y
)
157 image-
$(CONFIG_PPC_PMAC
) += zImage.coff zImage.miboot
160 initrd-
:= $(patsubst zImage
%, zImage.initrd
%, $(image-n
) $(image-
))
161 initrd-y
:= $(patsubst zImage
%, zImage.initrd
%, \
162 $(patsubst treeImage
%, treeImage.initrd
%, $(image-y
)))
163 initrd-y
:= $(filter-out $(image-y
), $(initrd-y
))
164 targets
+= $(image-y
) $(initrd-y
)
166 $(addprefix $(obj
)/, $(initrd-y
)): $(obj
)/ramdisk.image.gz
168 # If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
169 # empty string, define 'dts' to be path to the dts
170 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
171 ifeq ($(CONFIG_WANT_DEVICE_TREE
),y
)
172 ifneq ($(CONFIG_DEVICE_TREE
),"")
173 dts
= $(if
$(shell echo
$(CONFIG_DEVICE_TREE
) | grep
'^/'),\
174 ,$(srctree
)/$(src
)/dts
/)$(CONFIG_DEVICE_TREE
:"%"=%)
178 # Don't put the ramdisk on the pattern rule; when its missing make will try
179 # the pattern rule with less dependencies that also matches (even with the
180 # hard dependency listed).
181 $(obj
)/zImage.initrd.
%: vmlinux
$(wrapperbits
) $(dts
)
182 $(call if_changed
,wrap
,$*,$(dts
),,$(obj
)/ramdisk.image.gz
)
184 $(obj
)/zImage.
%: vmlinux
$(wrapperbits
) $(dts
)
185 $(call if_changed
,wrap
,$*,$(dts
))
187 # This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
189 $(obj
)/vmlinux.
strip: vmlinux
190 $(STRIP
) -s
-R .comment
$< -o
$@
192 $(obj
)/zImage.iseries
: vmlinux
193 $(STRIP
) -s
-R .comment
$< -o
$@
195 $(obj
)/zImage.ps3
: vmlinux
$(wrapper
) $(wrapperbits
) $(srctree
)/$(src
)/dts
/ps3.dts
196 $(STRIP
) -s
-R .comment
$< -o vmlinux.
strip
197 $(call cmd
,wrap
,ps3
,$(srctree
)/$(src
)/dts
/ps3.dts
,,)
199 $(obj
)/zImage.initrd.ps3
: vmlinux
$(wrapper
) $(wrapperbits
) $(srctree
)/$(src
)/dts
/ps3.dts
$(obj
)/ramdisk.image.gz
200 $(call cmd
,wrap
,ps3
,$(srctree
)/$(src
)/dts
/ps3.dts
,,$(obj
)/ramdisk.image.gz
)
202 $(obj
)/uImage
: vmlinux
$(wrapperbits
)
203 $(call if_changed
,wrap
,uboot
)
205 $(obj
)/cuImage.
%: vmlinux
$(dts
) $(wrapperbits
)
206 $(call if_changed
,wrap
,cuboot-
$*,$(dts
))
208 $(obj
)/treeImage.initrd.
%: vmlinux
$(dts
) $(wrapperbits
)
209 $(call if_changed
,wrap
,treeboot-
$*,$(dts
),,$(obj
)/ramdisk.image.gz
)
211 $(obj
)/treeImage.
%: vmlinux
$(dts
) $(wrapperbits
)
212 $(call if_changed
,wrap
,treeboot-
$*,$(dts
))
214 # If there isn't a platform selected then just strip the vmlinux.
216 image-y
:= vmlinux.
strip
219 $(obj
)/zImage
: $(addprefix $(obj
)/, $(image-y
))
221 $(obj
)/zImage.initrd
: $(addprefix $(obj
)/, $(initrd-y
))
224 install: $(CONFIGURE
) $(addprefix $(obj
)/, $(image-y
))
225 sh
-x
$(srctree
)/$(src
)/install.sh
"$(KERNELRELEASE)" vmlinux System.map
"$(INSTALL_PATH)" $<
227 # anything not in $(targets)
228 clean-files
+= $(image-
) $(initrd-
) zImage zImage.initrd cuImage.
* treeImage.
* \
231 # clean up files cached by wrapper
232 clean-kernel
:= vmlinux.
strip vmlinux.bin
233 clean-kernel
+= $(addsuffix .gz
,$(clean-kernel
))
234 # If not absolute clean-files are relative to $(obj).
235 clean-files
+= $(addprefix $(objtree
)/, $(clean-kernel
))