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1da177e4 LT |
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. 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. | |
22 | ||
2bf11819 | 23 | all: $(obj)/zImage |
1da177e4 LT |
24 | |
25 | HOSTCC := gcc | |
94b212c2 PM |
26 | BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \ |
27 | $(shell $(CROSS32CC) -print-file-name=include) -fPIC | |
decd300b | 28 | BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc |
2bf11819 PM |
29 | |
30 | ifeq ($(call cc-option-yn, -fstack-protector),y) | |
31 | BOOTCFLAGS += -fno-stack-protector | |
32 | endif | |
33 | ||
34 | BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj) | |
1da177e4 | 35 | |
4f3865fb RP |
36 | zlib := inffast.c inflate.c inftrees.c |
37 | zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h | |
7054036f OH |
38 | zliblinuxheader := zlib.h zconf.h zutil.h |
39 | ||
2bf11819 PM |
40 | $(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) \ |
41 | $(addprefix $(obj)/,$(zlibheader)) | |
42 | ||
cd197ffc | 43 | src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ |
ad9d2716 DG |
44 | ns16550.c serial.c simple_alloc.c div64.S util.S \ |
45 | gunzip_util.c $(zlib) | |
2bf11819 | 46 | src-plat := of.c |
cd197ffc | 47 | src-boot := $(src-wlib) $(src-plat) empty.c |
7054036f | 48 | |
1da177e4 LT |
49 | src-boot := $(addprefix $(obj)/, $(src-boot)) |
50 | obj-boot := $(addsuffix .o, $(basename $(src-boot))) | |
2bf11819 PM |
51 | obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) |
52 | obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) | |
7054036f OH |
53 | |
54 | quiet_cmd_copy_zlib = COPY $@ | |
55 | cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ | |
56 | ||
57 | quiet_cmd_copy_zlibheader = COPY $@ | |
58 | cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ | |
59 | # stddef.h for NULL | |
60 | quiet_cmd_copy_zliblinuxheader = COPY $@ | |
61 | cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ | |
62 | ||
63 | $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% | |
64 | $(call cmd,copy_zlib) | |
65 | ||
66 | $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% | |
67 | $(call cmd,copy_zlibheader) | |
68 | ||
69 | $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% | |
70 | $(call cmd,copy_zliblinuxheader) | |
71 | ||
2bf11819 PM |
72 | $(obj)/empty.c: |
73 | @touch $@ | |
74 | ||
75 | $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S | |
76 | @cp $< $@ | |
7054036f | 77 | |
2bf11819 | 78 | clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \ |
5d7960ff | 79 | empty.c zImage.coff.lds zImage.lds |
7054036f | 80 | |
1da177e4 LT |
81 | quiet_cmd_bootcc = BOOTCC $@ |
82 | cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< | |
83 | ||
84 | quiet_cmd_bootas = BOOTAS $@ | |
85 | cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< | |
86 | ||
2bf11819 | 87 | quiet_cmd_bootar = BOOTAR $@ |
235fd835 | 88 | cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@ |
a24c8481 | 89 | |
235fd835 | 90 | $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE |
1da177e4 | 91 | $(call if_changed_dep,bootcc) |
235fd835 | 92 | $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE |
1da177e4 LT |
93 | $(call if_changed_dep,bootas) |
94 | ||
235fd835 MM |
95 | $(obj)/wrapper.a: $(obj-wlib) FORCE |
96 | $(call if_changed,bootar) | |
1da177e4 | 97 | |
0cfcccb4 | 98 | hostprogs-y := addnote addRamDisk hack-coff mktree |
1da177e4 | 99 | |
235fd835 | 100 | targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) |
cd197ffc | 101 | extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \ |
2bf11819 | 102 | $(obj)/zImage.lds $(obj)/zImage.coff.lds |
66a45dd3 | 103 | |
2bf11819 | 104 | wrapper :=$(srctree)/$(src)/wrapper |
65b58039 | 105 | wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \ |
235fd835 | 106 | $(wrapper) FORCE |
1da177e4 | 107 | |
2bf11819 PM |
108 | ############# |
109 | # Bits for building various flavours of zImage | |
1da177e4 | 110 | |
2bf11819 | 111 | ifneq ($(CROSS32_COMPILE),) |
dcf90651 | 112 | CROSSWRAP := -C "$(CROSS32_COMPILE)" |
2bf11819 PM |
113 | else |
114 | ifneq ($(CROSS_COMPILE),) | |
dcf90651 | 115 | CROSSWRAP := -C "$(CROSS_COMPILE)" |
2bf11819 PM |
116 | endif |
117 | endif | |
1da177e4 | 118 | |
9da82a6d | 119 | # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd |
2bf11819 | 120 | quiet_cmd_wrap = WRAP $@ |
9da82a6d MM |
121 | cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \ |
122 | $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux | |
2bf11819 | 123 | |
020533ef GL |
124 | image-$(CONFIG_PPC_PSERIES) += zImage.pseries |
125 | image-$(CONFIG_PPC_MAPLE) += zImage.pseries | |
126 | image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries | |
8a8944aa | 127 | image-$(CONFIG_PPC_PS3) += zImage.ps3 |
c347b798 | 128 | image-$(CONFIG_PPC_CELLEB) += zImage.pseries |
020533ef | 129 | image-$(CONFIG_PPC_CHRP) += zImage.chrp |
7839af33 | 130 | image-$(CONFIG_PPC_EFIKA) += zImage.chrp |
020533ef GL |
131 | image-$(CONFIG_PPC_PMAC) += zImage.pmac |
132 | image-$(CONFIG_DEFAULT_UIMAGE) += uImage | |
66a45dd3 | 133 | |
9216ad8c PM |
134 | # For 32-bit powermacs, build the COFF and miboot images |
135 | # as well as the ELF images. | |
2bf11819 PM |
136 | ifeq ($(CONFIG_PPC32),y) |
137 | image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot | |
138 | endif | |
139 | ||
5d7960ff | 140 | initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-)) |
2bf11819 | 141 | initrd-y := $(patsubst zImage%, zImage.initrd%, $(image-y)) |
9da82a6d | 142 | initrd-y := $(filter-out $(image-y), $(initrd-y)) |
235fd835 | 143 | targets += $(image-y) $(initrd-y) |
2bf11819 | 144 | |
9da82a6d MM |
145 | $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz |
146 | ||
147 | # Don't put the ramdisk on the pattern rule; when its missing make will try | |
148 | # the pattern rule with less dependencies that also matches (even with the | |
149 | # hard dependency listed). | |
150 | $(obj)/zImage.initrd.%: vmlinux $(wrapperbits) | |
151 | $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz) | |
152 | ||
153 | $(obj)/zImage.%: vmlinux $(wrapperbits) | |
154 | $(call if_changed,wrap,$*) | |
155 | ||
156 | $(obj)/zImage.ps3: vmlinux | |
157 | $(STRIP) -s -R .comment $< -o $@ | |
158 | ||
159 | $(obj)/zImage.initrd.ps3: vmlinux | |
160 | @echo " WARNING zImage.initrd.ps3 not supported (yet)" | |
161 | ||
162 | $(obj)/uImage: vmlinux $(wrapperbits) | |
163 | $(call if_changed,wrap,uboot) | |
164 | ||
2bf11819 PM |
165 | $(obj)/zImage: $(addprefix $(obj)/, $(image-y)) |
166 | @rm -f $@; ln $< $@ | |
167 | $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) | |
168 | @rm -f $@; ln $< $@ | |
169 | ||
170 | install: $(CONFIGURE) $(image-y) | |
171 | sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< | |
172 | ||
5d7960ff MM |
173 | clean-files += $(addprefix $(objtree)/, vmlinux.strip.gz vmlinux.bin.gz) |
174 | clean-files += $(image-) $(initrd-) zImage zImage.initrd |