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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 | ||
43 | src-wlib := string.S stdio.c main.c div64.S $(zlib) | |
44 | src-plat := of.c | |
45 | src-boot := crt0.S $(src-wlib) $(src-plat) empty.c | |
7054036f | 46 | |
1da177e4 LT |
47 | src-boot := $(addprefix $(obj)/, $(src-boot)) |
48 | obj-boot := $(addsuffix .o, $(basename $(src-boot))) | |
2bf11819 PM |
49 | obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) |
50 | obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) | |
7054036f OH |
51 | |
52 | quiet_cmd_copy_zlib = COPY $@ | |
53 | cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ | |
54 | ||
55 | quiet_cmd_copy_zlibheader = COPY $@ | |
56 | cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ | |
57 | # stddef.h for NULL | |
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\"@" $< > $@ | |
60 | ||
61 | $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% | |
62 | $(call cmd,copy_zlib) | |
63 | ||
64 | $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% | |
65 | $(call cmd,copy_zlibheader) | |
66 | ||
67 | $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% | |
68 | $(call cmd,copy_zliblinuxheader) | |
69 | ||
2bf11819 PM |
70 | $(obj)/empty.c: |
71 | @touch $@ | |
72 | ||
73 | $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S | |
74 | @cp $< $@ | |
7054036f | 75 | |
2bf11819 PM |
76 | clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \ |
77 | $(obj)/empty.c | |
7054036f | 78 | |
1da177e4 LT |
79 | quiet_cmd_bootcc = BOOTCC $@ |
80 | cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< | |
81 | ||
82 | quiet_cmd_bootas = BOOTAS $@ | |
83 | cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< | |
84 | ||
2bf11819 PM |
85 | quiet_cmd_bootar = BOOTAR $@ |
86 | cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $^; mv $@.$$$$ $@ | |
a24c8481 | 87 | |
1da177e4 LT |
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) | |
92 | ||
2bf11819 PM |
93 | $(obj)/wrapper.a: $(obj-wlib) |
94 | $(call cmd,bootar) | |
1da177e4 | 95 | |
2bf11819 | 96 | hostprogs-y := addnote addRamDisk hack-coff |
1da177e4 | 97 | |
2bf11819 PM |
98 | extra-y := $(obj)/crt0.o $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \ |
99 | $(obj)/zImage.lds $(obj)/zImage.coff.lds | |
66a45dd3 | 100 | |
2bf11819 PM |
101 | wrapper :=$(srctree)/$(src)/wrapper |
102 | wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff) | |
1da177e4 | 103 | |
2bf11819 PM |
104 | ############# |
105 | # Bits for building various flavours of zImage | |
1da177e4 | 106 | |
2bf11819 PM |
107 | ifneq ($(CROSS32_COMPILE),) |
108 | CROSSWRAP := -C $(CROSS32_COMPILE) | |
109 | else | |
110 | ifneq ($(CROSS_COMPILE),) | |
111 | CROSSWRAP := -C $(CROSS_COMPILE) | |
112 | endif | |
113 | endif | |
1da177e4 | 114 | |
2bf11819 | 115 | quiet_cmd_wrap = WRAP $@ |
5b9b5572 | 116 | cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) vmlinux |
2bf11819 PM |
117 | quiet_cmd_wrap_initrd = WRAP $@ |
118 | cmd_wrap_initrd =$(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \ | |
119 | -i $(obj)/ramdisk.image.gz vmlinux | |
1da177e4 | 120 | |
2bf11819 PM |
121 | $(obj)/zImage.chrp: vmlinux $(wrapperbits) |
122 | $(call cmd,wrap,chrp) | |
e4df7671 | 123 | |
2bf11819 PM |
124 | $(obj)/zImage.initrd.chrp: vmlinux $(wrapperbits) |
125 | $(call cmd,wrap_initrd,chrp) | |
1da177e4 | 126 | |
2bf11819 PM |
127 | $(obj)/zImage.pseries: vmlinux $(wrapperbits) |
128 | $(call cmd,wrap,pseries) | |
9216ad8c | 129 | |
2bf11819 PM |
130 | $(obj)/zImage.initrd.pseries: vmlinux $(wrapperbits) |
131 | $(call cmd,wrap_initrd,pseries) | |
66a45dd3 | 132 | |
2bf11819 PM |
133 | $(obj)/zImage.pmac: vmlinux $(wrapperbits) |
134 | $(call cmd,wrap,pmac) | |
1da177e4 | 135 | |
2bf11819 PM |
136 | $(obj)/zImage.initrd.pmac: vmlinux $(wrapperbits) |
137 | $(call cmd,wrap_initrd,pmac) | |
1da177e4 | 138 | |
2bf11819 PM |
139 | $(obj)/zImage.coff: vmlinux $(wrapperbits) |
140 | $(call cmd,wrap,pmaccoff) | |
1da177e4 | 141 | |
2bf11819 PM |
142 | $(obj)/zImage.initrd.coff: vmlinux $(wrapperbits) |
143 | $(call cmd,wrap_initrd,pmaccoff) | |
144 | ||
145 | $(obj)/zImage.miboot: vmlinux $(wrapperbits) | |
146 | $(call cmd,wrap,miboot) | |
1da177e4 | 147 | |
2bf11819 PM |
148 | $(obj)/zImage.initrd.miboot: vmlinux $(wrapperbits) |
149 | $(call cmd,wrap_initrd,miboot) | |
a24c8481 | 150 | |
2bf11819 PM |
151 | $(obj)/uImage: vmlinux $(wrapperbits) |
152 | $(call cmd,wrap,uboot) | |
153 | ||
154 | image-$(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-$(CONFIG_DEFAULT_UIMAGE) += uImage | |
66a45dd3 | 160 | |
9216ad8c PM |
161 | # For 32-bit powermacs, build the COFF and miboot images |
162 | # as well as the ELF images. | |
2bf11819 PM |
163 | ifeq ($(CONFIG_PPC32),y) |
164 | image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot | |
165 | endif | |
166 | ||
167 | initrd-y := $(patsubst zImage%, zImage.initrd%, $(image-y)) | |
168 | ||
169 | $(obj)/zImage: $(addprefix $(obj)/, $(image-y)) | |
170 | @rm -f $@; ln $< $@ | |
171 | $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) | |
172 | @rm -f $@; ln $< $@ | |
173 | ||
174 | install: $(CONFIGURE) $(image-y) | |
175 | sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< | |
176 | ||
177 | clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip.gz) | |
178 | clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.bin.gz) |