xref: /openbmc/linux/arch/arm/boot/Makefile (revision 1ab142d4) 
1#
2# arch/arm/boot/Makefile
3#
4# This file is included by the global makefile so that you can add your own
5# architecture-specific flags and dependencies.
6#
7# This file is subject to the terms and conditions of the GNU General Public
8# License.  See the file "COPYING" in the main directory of this archive
9# for more details.
10#
11# Copyright (C) 1995-2002 Russell King
12#
13
14MKIMAGE         := $(srctree)/scripts/mkuboot.sh
15
16ifneq ($(MACHINE),)
17include $(srctree)/$(MACHINE)/Makefile.boot
18endif
19
20# Note: the following conditions must always be true:
21#   ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
22#   PARAMS_PHYS must be within 4MB of ZRELADDR
23#   INITRD_PHYS must be in RAM
24ZRELADDR    := $(zreladdr-y)
25PARAMS_PHYS := $(params_phys-y)
26INITRD_PHYS := $(initrd_phys-y)
27
28export ZRELADDR INITRD_PHYS PARAMS_PHYS
29
30targets := Image zImage xipImage bootpImage uImage
31
32ifeq ($(CONFIG_XIP_KERNEL),y)
33
34$(obj)/xipImage: vmlinux FORCE
35	$(call if_changed,objcopy)
36	@echo '  Kernel: $@ is ready (physical address: $(CONFIG_XIP_PHYS_ADDR))'
37
38$(obj)/Image $(obj)/zImage: FORCE
39	@echo 'Kernel configured for XIP (CONFIG_XIP_KERNEL=y)'
40	@echo 'Only the xipImage target is available in this case'
41	@false
42
43else
44
45$(obj)/xipImage: FORCE
46	@echo 'Kernel not configured for XIP (CONFIG_XIP_KERNEL!=y)'
47	@false
48
49$(obj)/Image: vmlinux FORCE
50	$(call if_changed,objcopy)
51	@echo '  Kernel: $@ is ready'
52
53$(obj)/compressed/vmlinux: $(obj)/Image FORCE
54	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
55
56$(obj)/zImage:	$(obj)/compressed/vmlinux FORCE
57	$(call if_changed,objcopy)
58	@echo '  Kernel: $@ is ready'
59
60endif
61
62targets += $(dtb-y)
63
64# Rule to build device tree blobs
65$(obj)/%.dtb: $(src)/dts/%.dts FORCE
66	$(call if_changed_dep,dtc)
67
68$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
69
70clean-files := *.dtb
71
72quiet_cmd_uimage = UIMAGE  $@
73      cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A arm -O linux -T kernel \
74		   -C none -a $(LOADADDR) -e $(STARTADDR) \
75		   -n 'Linux-$(KERNELRELEASE)' -d $< $@
76
77ifeq ($(CONFIG_ZBOOT_ROM),y)
78$(obj)/uImage: LOADADDR=$(CONFIG_ZBOOT_ROM_TEXT)
79else
80$(obj)/uImage: LOADADDR=$(ZRELADDR)
81endif
82
83$(obj)/uImage: STARTADDR=$(LOADADDR)
84
85check_for_multiple_loadaddr = \
86if [ $(words $(LOADADDR)) -gt 1 ]; then \
87	echo 'multiple load addresses: $(LOADADDR)'; \
88	echo 'This is incompatible with uImages'; \
89	echo 'Specify LOADADDR on the commandline to build an uImage'; \
90	false; \
91fi
92
93$(obj)/uImage:	$(obj)/zImage FORCE
94	@$(check_for_multiple_loadaddr)
95	$(call if_changed,uimage)
96	@echo '  Image $@ is ready'
97
98$(obj)/bootp/bootp: $(obj)/zImage initrd FORCE
99	$(Q)$(MAKE) $(build)=$(obj)/bootp $@
100	@:
101
102$(obj)/bootpImage: $(obj)/bootp/bootp FORCE
103	$(call if_changed,objcopy)
104	@echo '  Kernel: $@ is ready'
105
106PHONY += initrd FORCE
107initrd:
108	@test "$(INITRD_PHYS)" != "" || \
109	(echo This machine does not support INITRD; exit -1)
110	@test "$(INITRD)" != "" || \
111	(echo You must specify INITRD; exit -1)
112
113install: $(obj)/Image
114	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
115	$(obj)/Image System.map "$(INSTALL_PATH)"
116
117zinstall: $(obj)/zImage
118	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
119	$(obj)/zImage System.map "$(INSTALL_PATH)"
120
121uinstall: $(obj)/uImage
122	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
123	$(obj)/uImage System.map "$(INSTALL_PATH)"
124
125zi:
126	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
127	$(obj)/zImage System.map "$(INSTALL_PATH)"
128
129i:
130	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
131	$(obj)/Image System.map "$(INSTALL_PATH)"
132
133subdir-	    := bootp compressed
134