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)/44x.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 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c
48 src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
49 cuboot-ebony.c treeboot-ebony.c prpmc2800.c
50 src-boot := $(src-wlib) $(src-plat) empty.c
52 src-boot := $(addprefix $(obj)/, $(src-boot))
53 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
54 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
55 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
57 quiet_cmd_copy_zlib = COPY $@
58 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
60 quiet_cmd_copy_zlibheader = COPY $@
61 cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
63 quiet_cmd_copy_zliblinuxheader = COPY $@
64 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
66 $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
69 $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
70 $(call cmd,copy_zlibheader)
72 $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
73 $(call cmd,copy_zliblinuxheader)
78 $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
81 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
82 empty.c zImage.coff.lds zImage.lds
84 quiet_cmd_bootcc = BOOTCC $@
85 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
87 quiet_cmd_bootas = BOOTAS $@
88 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
90 quiet_cmd_bootar = BOOTAR $@
91 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
93 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
94 $(call if_changed_dep,bootcc)
95 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
96 $(call if_changed_dep,bootas)
98 $(obj)/wrapper.a: $(obj-wlib) FORCE
99 $(call if_changed,bootar)
101 hostprogs-y := addnote addRamDisk hack-coff mktree
103 targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
104 extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
105 $(obj)/zImage.lds $(obj)/zImage.coff.lds
107 wrapper :=$(srctree)/$(src)/wrapper
108 wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
112 # Bits for building various flavours of zImage
114 ifneq ($(CROSS32_COMPILE),)
115 CROSSWRAP := -C "$(CROSS32_COMPILE)"
117 ifneq ($(CROSS_COMPILE),)
118 CROSSWRAP := -C "$(CROSS_COMPILE)"
122 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
123 quiet_cmd_wrap = WRAP $@
124 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
125 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
127 image-$(CONFIG_PPC_PSERIES) += zImage.pseries
128 image-$(CONFIG_PPC_MAPLE) += zImage.pseries
129 image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
130 image-$(CONFIG_PPC_PS3) += zImage.ps3
131 image-$(CONFIG_PPC_CELLEB) += zImage.pseries
132 image-$(CONFIG_PPC_CHRP) += zImage.chrp
133 image-$(CONFIG_PPC_EFIKA) += zImage.chrp
134 image-$(CONFIG_PPC_PMAC) += zImage.pmac
135 image-$(CONFIG_PPC_HOLLY) += zImage.holly
136 image-$(CONFIG_PPC_PRPMC2800) += zImage.prpmc2800
137 image-$(CONFIG_PPC_ISERIES) += zImage.iseries
138 image-$(CONFIG_DEFAULT_UIMAGE) += uImage
140 ifneq ($(CONFIG_DEVICE_TREE),"")
141 image-$(CONFIG_PPC_83xx) += cuImage.83xx
142 image-$(CONFIG_PPC_85xx) += cuImage.85xx
143 image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
146 # For 32-bit powermacs, build the COFF and miboot images
147 # as well as the ELF images.
148 ifeq ($(CONFIG_PPC32),y)
149 image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
152 initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
153 initrd-y := $(patsubst zImage%, zImage.initrd%, \
154 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
155 initrd-y := $(filter-out $(image-y), $(initrd-y))
156 targets += $(image-y) $(initrd-y)
158 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
160 # If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
161 # empty string, define 'dts' to be path to the dts
162 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
163 ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
164 ifneq ($(CONFIG_DEVICE_TREE),"")
165 dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
166 ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
170 # Don't put the ramdisk on the pattern rule; when its missing make will try
171 # the pattern rule with less dependencies that also matches (even with the
172 # hard dependency listed).
173 $(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
174 $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
176 $(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
177 $(call if_changed,wrap,$*,$(dts))
179 $(obj)/zImage.iseries: vmlinux
180 $(STRIP) -s -R .comment $< -o $@
182 $(obj)/zImage.ps3: vmlinux
183 $(STRIP) -s -R .comment $< -o $@
185 $(obj)/zImage.initrd.ps3: vmlinux
186 @echo " WARNING zImage.initrd.ps3 not supported (yet)"
188 $(obj)/uImage: vmlinux $(wrapperbits)
189 $(call if_changed,wrap,uboot)
191 $(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
192 $(call if_changed,wrap,cuboot-$*,$(dts))
194 $(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
195 $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
197 $(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
198 $(call if_changed,wrap,treeboot-$*,$(dts))
200 $(obj)/zImage: $(addprefix $(obj)/, $(image-y))
202 $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
205 install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
206 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
208 # anything not in $(targets)
209 clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.*
211 # clean up files cached by wrapper
212 clean-kernel := vmlinux.strip vmlinux.bin
213 clean-kernel += $(addsuffix .gz,$(clean-kernel))
214 # If not absolute clean-files are relative to $(obj).
215 clean-files += $(addprefix $(objtree)/, $(clean-kernel))