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 div64.S $(zlib)
45 src-boot := crt0.S $(src-wlib) $(src-plat) empty.c
47 src-boot := $(addprefix $(obj)/, $(src-boot))
48 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
49 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
50 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
52 quiet_cmd_copy_zlib = COPY $@
53 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
55 quiet_cmd_copy_zlibheader = COPY $@
56 cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
58 quiet_cmd_copy_zliblinuxheader = COPY $@
59 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
61 $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
64 $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
65 $(call cmd,copy_zlibheader)
67 $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
68 $(call cmd,copy_zliblinuxheader)
73 $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
76 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
79 quiet_cmd_bootcc = BOOTCC $@
80 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
82 quiet_cmd_bootas = BOOTAS $@
83 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
85 quiet_cmd_bootar = BOOTAR $@
86 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $^; mv $@.$$$$ $@
88 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
89 $(call if_changed_dep,bootcc)
90 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
91 $(call if_changed_dep,bootas)
93 $(obj)/wrapper.a: $(obj-wlib)
96 hostprogs-y := addnote addRamDisk hack-coff
98 extra-y := $(obj)/crt0.o $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
99 $(obj)/zImage.lds $(obj)/zImage.coff.lds
101 wrapper :=$(srctree)/$(src)/wrapper
102 wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff)
105 # Bits for building various flavours of zImage
107 ifneq ($(CROSS32_COMPILE),)
108 CROSSWRAP := -C $(CROSS32_COMPILE)
110 ifneq ($(CROSS_COMPILE),)
111 CROSSWRAP := -C $(CROSS_COMPILE)
115 quiet_cmd_wrap = WRAP $@
116 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) vmlinux
117 quiet_cmd_wrap_initrd = WRAP $@
118 cmd_wrap_initrd =$(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
119 -i $(obj)/ramdisk.image.gz vmlinux
121 $(obj)/zImage.chrp: vmlinux $(wrapperbits)
122 $(call cmd,wrap,chrp)
124 $(obj)/zImage.initrd.chrp: vmlinux $(wrapperbits)
125 $(call cmd,wrap_initrd,chrp)
127 $(obj)/zImage.pseries: vmlinux $(wrapperbits)
128 $(call cmd,wrap,pseries)
130 $(obj)/zImage.initrd.pseries: vmlinux $(wrapperbits)
131 $(call cmd,wrap_initrd,pseries)
133 $(obj)/zImage.pmac: vmlinux $(wrapperbits)
134 $(call cmd,wrap,pmac)
136 $(obj)/zImage.initrd.pmac: vmlinux $(wrapperbits)
137 $(call cmd,wrap_initrd,pmac)
139 $(obj)/zImage.coff: vmlinux $(wrapperbits)
140 $(call cmd,wrap,pmaccoff)
142 $(obj)/zImage.initrd.coff: vmlinux $(wrapperbits)
143 $(call cmd,wrap_initrd,pmaccoff)
145 $(obj)/zImage.miboot: vmlinux $(wrapperbits)
146 $(call cmd,wrap,miboot)
148 $(obj)/zImage.initrd.miboot: vmlinux $(wrapperbits)
149 $(call cmd,wrap_initrd,miboot)
151 $(obj)/uImage: vmlinux $(wrapperbits)
152 $(call cmd,wrap,uboot)
154 image-$(CONFIG_PPC_PSERIES) += zImage.pseries
155 image-$(CONFIG_PPC_MAPLE) += zImage.pseries
156 image-$(CONFIG_PPC_CELL) += zImage.pseries
157 image-$(CONFIG_PPC_CHRP) += zImage.chrp
158 image-$(CONFIG_PPC_PMAC) += zImage.pmac
159 image-$(CONFIG_DEFAULT_UIMAGE) += uImage
161 # For 32-bit powermacs, build the COFF and miboot images
162 # as well as the ELF images.
163 ifeq ($(CONFIG_PPC32),y)
164 image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
167 initrd-y := $(patsubst zImage%, zImage.initrd%, $(image-y))
169 $(obj)/zImage: $(addprefix $(obj)/, $(image-y))
171 $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
174 install: $(CONFIGURE) $(image-y)
175 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
177 clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip.gz)
178 clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.bin.gz)