Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# Makefile for making ELF bootable images for booting on CHRP
2# using Open Firmware.
3#
4# Geert Uytterhoeven September 1997
5#
6# Based on coffboot by Paul Mackerras
7# Simplified for ppc64 by Todd Inglett
8#
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.
12#
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.
19
20all: $(obj)/zImage
21
22BOOTCFLAGS := -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)
26BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
27
28ifeq ($(call cc-option-yn, -fstack-protector),y)
29BOOTCFLAGS += -fno-stack-protector
30endif
31
32BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj)
33
34$(obj)/44x.o: BOOTCFLAGS += -mcpu=440
35$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
36
37zlib := inffast.c inflate.c inftrees.c
38zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
39zliblinuxheader := zlib.h zconf.h zutil.h
40
41$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
42 $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
43
44src-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 \
47 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c
48src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
49 cuboot-ebony.c treeboot-ebony.c prpmc2800.c
50src-boot := $(src-wlib) $(src-plat) empty.c
51
52src-boot := $(addprefix $(obj)/, $(src-boot))
53obj-boot := $(addsuffix .o, $(basename $(src-boot)))
54obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
55obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
56
57quiet_cmd_copy_zlib = COPY $@
58 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
59
60quiet_cmd_copy_zlibheader = COPY $@
61 cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
62# stddef.h for NULL
63quiet_cmd_copy_zliblinuxheader = COPY $@
64 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
65
66$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
67 $(call cmd,copy_zlib)
68
69$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
70 $(call cmd,copy_zlibheader)
71
72$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
73 $(call cmd,copy_zliblinuxheader)
74
75$(obj)/empty.c:
76 @touch $@
77
78$(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
79 @cp $< $@
80
81clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
82 empty.c zImage.coff.lds zImage.lds
83
84quiet_cmd_bootcc = BOOTCC $@
85 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
86
87quiet_cmd_bootas = BOOTAS $@
88 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
89
90quiet_cmd_bootar = BOOTAR $@
91 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
92
93$(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 $(call if_changed_dep,bootas)
97
98$(obj)/wrapper.a: $(obj-wlib) FORCE
99 $(call if_changed,bootar)
100
101hostprogs-y := addnote addRamDisk hack-coff mktree
102
103targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
104extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
105 $(obj)/zImage.lds $(obj)/zImage.coff.lds
106
107wrapper :=$(srctree)/$(src)/wrapper
108wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
109 $(wrapper) FORCE
110
111#############
112# Bits for building various flavours of zImage
113
114ifneq ($(CROSS32_COMPILE),)
115CROSSWRAP := -C "$(CROSS32_COMPILE)"
116else
117ifneq ($(CROSS_COMPILE),)
118CROSSWRAP := -C "$(CROSS_COMPILE)"
119endif
120endif
121
122# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
123quiet_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 $5) vmlinux
126
127image-$(CONFIG_PPC_PSERIES) += zImage.pseries
128image-$(CONFIG_PPC_MAPLE) += zImage.pseries
129image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
130image-$(CONFIG_PPC_PS3) += zImage.ps3
131image-$(CONFIG_PPC_CELLEB) += zImage.pseries
132image-$(CONFIG_PPC_CHRP) += zImage.chrp
133image-$(CONFIG_PPC_EFIKA) += zImage.chrp
134image-$(CONFIG_PPC_PMAC) += zImage.pmac
135image-$(CONFIG_PPC_HOLLY) += zImage.holly-elf
136image-$(CONFIG_PPC_PRPMC2800) += zImage.prpmc2800
137image-$(CONFIG_PPC_ISERIES) += zImage.iseries
138image-$(CONFIG_DEFAULT_UIMAGE) += uImage
139
140ifneq ($(CONFIG_DEVICE_TREE),"")
141image-$(CONFIG_PPC_83xx) += cuImage.83xx
142image-$(CONFIG_PPC_85xx) += cuImage.85xx
143image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
144endif
145
146# For 32-bit powermacs, build the COFF and miboot images
147# as well as the ELF images.
148ifeq ($(CONFIG_PPC32),y)
149image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
150endif
151
152initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
153initrd-y := $(patsubst zImage%, zImage.initrd%, \
154 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
155initrd-y := $(filter-out $(image-y), $(initrd-y))
156targets += $(image-y) $(initrd-y)
157
158$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
159
160dts- := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-))
161dts-y := $(patsubst zImage%, zImage.dts%, $(image-y))
162dts-y := $(filter-out $(image-y), $(dts-y))
163targets += $(image-y) $(dts-y)
164
165dts_initrd- := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-))
166dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y))
167dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y))
168targets += $(image-y) $(dts_initrd-y)
169
170$(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz
171
172# Don't put the ramdisk on the pattern rule; when its missing make will try
173# the pattern rule with less dependencies that also matches (even with the
174# hard dependency listed).
175$(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz
176 $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
177
178$(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts)
179 $(call if_changed,wrap,$*,$(dts))
180
181$(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
182 $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
183
184$(obj)/zImage.%: vmlinux $(wrapperbits)
185 $(call if_changed,wrap,$*)
186
187$(obj)/zImage.iseries: vmlinux
188 $(STRIP) -s -R .comment $< -o $@
189
190$(obj)/zImage.ps3: vmlinux
191 $(STRIP) -s -R .comment $< -o $@
192
193$(obj)/zImage.initrd.ps3: vmlinux
194 @echo " WARNING zImage.initrd.ps3 not supported (yet)"
195
196$(obj)/zImage.holly-elf: vmlinux $(wrapperbits)
197 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,)
198
199$(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz
200 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,$(obj)/ramdisk.image.gz)
201
202$(obj)/uImage: vmlinux $(wrapperbits)
203 $(call if_changed,wrap,uboot)
204
205# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
206dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
207 ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
208
209$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
210 $(call if_changed,wrap,cuboot-$*,$(dts))
211
212$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
213 $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
214
215$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
216 $(call if_changed,wrap,treeboot-$*,$(dts))
217
218$(obj)/zImage: $(addprefix $(obj)/, $(image-y))
219 @rm -f $@; ln $< $@
220$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
221 @rm -f $@; ln $< $@
222$(obj)/zImage.dts: $(addprefix $(obj)/, $(dts-y))
223 @rm -f $@; ln $< $@
224$(obj)/zImage.dts_initrd: $(addprefix $(obj)/, $(dts_initrd-y))
225 @rm -f $@; ln $< $@
226
227
228install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
229 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
230
231# anything not in $(targets)
232clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \
233 treeImage.* zImage.dts zImage.dts_initrd
234
235# clean up files cached by wrapper
236clean-kernel := vmlinux.strip vmlinux.bin
237clean-kernel += $(addsuffix .gz,$(clean-kernel))
238# If not absolute clean-files are relative to $(obj).
239clean-files += $(addprefix $(objtree)/, $(clean-kernel))