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) gunzip_util.o main.o): \
41 $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
43 src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
44 ns16550.c serial.c simple_alloc.c div64.S util.S \
45 gunzip_util.c elf_util.c $(zlib) devtree.c \
46 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c
47 src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
48 cuboot-ebony.c treeboot-ebony.c
49 src-boot := $(src-wlib) $(src-plat) empty.c
51 src-boot := $(addprefix $(obj)/, $(src-boot))
52 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
53 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
54 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
56 quiet_cmd_copy_zlib = COPY $@
57 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
59 quiet_cmd_copy_zlibheader = COPY $@
60 cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
62 quiet_cmd_copy_zliblinuxheader = COPY $@
63 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
65 $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
68 $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
69 $(call cmd,copy_zlibheader)
71 $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
72 $(call cmd,copy_zliblinuxheader)
77 $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
80 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
81 empty.c zImage.coff.lds zImage.lds
83 quiet_cmd_bootcc = BOOTCC $@
84 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
86 quiet_cmd_bootas = BOOTAS $@
87 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
89 quiet_cmd_bootar = BOOTAR $@
90 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
92 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
93 $(call if_changed_dep,bootcc)
94 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
95 $(call if_changed_dep,bootas)
97 $(obj)/wrapper.a: $(obj-wlib) FORCE
98 $(call if_changed,bootar)
100 hostprogs-y := addnote addRamDisk hack-coff mktree
102 targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
103 extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
104 $(obj)/zImage.lds $(obj)/zImage.coff.lds
106 wrapper :=$(srctree)/$(src)/wrapper
107 wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
111 # Bits for building various flavours of zImage
113 ifneq ($(CROSS32_COMPILE),)
114 CROSSWRAP := -C "$(CROSS32_COMPILE)"
116 ifneq ($(CROSS_COMPILE),)
117 CROSSWRAP := -C "$(CROSS_COMPILE)"
121 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
122 quiet_cmd_wrap = WRAP $@
123 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
124 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
126 image-$(CONFIG_PPC_PSERIES) += zImage.pseries
127 image-$(CONFIG_PPC_MAPLE) += zImage.pseries
128 image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
129 image-$(CONFIG_PPC_PS3) += zImage.ps3
130 image-$(CONFIG_PPC_CELLEB) += zImage.pseries
131 image-$(CONFIG_PPC_CHRP) += zImage.chrp
132 image-$(CONFIG_PPC_EFIKA) += zImage.chrp
133 image-$(CONFIG_PPC_PMAC) += zImage.pmac
134 image-$(CONFIG_PPC_HOLLY) += zImage.holly-elf
135 image-$(CONFIG_DEFAULT_UIMAGE) += uImage
137 ifneq ($(CONFIG_DEVICE_TREE),"")
138 image-$(CONFIG_PPC_83xx) += cuImage.83xx
139 image-$(CONFIG_PPC_85xx) += cuImage.85xx
140 image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
143 # For 32-bit powermacs, build the COFF and miboot images
144 # as well as the ELF images.
145 ifeq ($(CONFIG_PPC32),y)
146 image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
149 initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
150 initrd-y := $(patsubst zImage%, zImage.initrd%, \
151 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
152 initrd-y := $(filter-out $(image-y), $(initrd-y))
153 targets += $(image-y) $(initrd-y)
155 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
157 dts- := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-))
158 dts-y := $(patsubst zImage%, zImage.dts%, $(image-y))
159 dts-y := $(filter-out $(image-y), $(dts-y))
160 targets += $(image-y) $(dts-y)
162 dts_initrd- := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-))
163 dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y))
164 dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y))
165 targets += $(image-y) $(dts_initrd-y)
167 $(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz
169 # Don't put the ramdisk on the pattern rule; when its missing make will try
170 # the pattern rule with less dependencies that also matches (even with the
171 # hard dependency listed).
172 $(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz
173 $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
175 $(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts)
176 $(call if_changed,wrap,$*,$(dts))
178 $(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
179 $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
181 $(obj)/zImage.%: vmlinux $(wrapperbits)
182 $(call if_changed,wrap,$*)
184 $(obj)/zImage.ps3: vmlinux
185 $(STRIP) -s -R .comment $< -o $@
187 $(obj)/zImage.initrd.ps3: vmlinux
188 @echo " WARNING zImage.initrd.ps3 not supported (yet)"
190 $(obj)/zImage.holly-elf: vmlinux $(wrapperbits)
191 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,)
193 $(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz
194 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,$(obj)/ramdisk.image.gz)
196 $(obj)/uImage: vmlinux $(wrapperbits)
197 $(call if_changed,wrap,uboot)
199 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
200 dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
201 ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
203 $(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
204 $(call if_changed,wrap,cuboot-$*,$(dts))
206 $(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
207 $(call if_changed,wrap,treeboot-$*,$(dts))
209 $(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
210 $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
212 $(obj)/zImage: $(addprefix $(obj)/, $(image-y))
214 $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
216 $(obj)/zImage.dts: $(addprefix $(obj)/, $(dts-y))
218 $(obj)/zImage.dts_initrd: $(addprefix $(obj)/, $(dts_initrd-y))
222 install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
223 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
225 # anything not in $(targets)
226 clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \
227 treeImage.* zImage.dts zImage.dts_initrd
229 # clean up files cached by wrapper
230 clean-kernel := vmlinux.strip vmlinux.bin
231 clean-kernel += $(addsuffix .gz,$(clean-kernel))
232 # If not absolute clean-files are relative to $(obj).
233 clean-files += $(addprefix $(objtree)/, $(clean-kernel))