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)/uImage: vmlinux $(wrapperbits)
156 $(call cmd,wrap,uboot)
158 image-$(CONFIG_PPC_PSERIES) += zImage.pseries
159 image-$(CONFIG_PPC_MAPLE) += zImage.pseries
160 image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
161 image-$(CONFIG_PPC_PS3) += zImage.ps3
162 image-$(CONFIG_PPC_CHRP) += zImage.chrp
163 image-$(CONFIG_PPC_EFIKA) += zImage.chrp
164 image-$(CONFIG_PPC_PMAC) += zImage.pmac
165 image-$(CONFIG_DEFAULT_UIMAGE) += uImage
167 # For 32-bit powermacs, build the COFF and miboot images
168 # as well as the ELF images.
169 ifeq ($(CONFIG_PPC32),y)
170 image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
173 initrd-y := $(patsubst zImage%, zImage.initrd%, $(image-y))
175 $(obj)/zImage: $(addprefix $(obj)/, $(image-y))
177 $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
180 install: $(CONFIGURE) $(image-y)
181 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
183 clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip.gz)
184 clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.bin.gz)
185 clean-files += $(image-)