xref: /openbmc/linux/arch/arm/boot/Makefile (revision 8497f696) 
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
14ifneq ($(MACHINE),)
15include $(srctree)/$(MACHINE)/Makefile.boot
16endif
17
18# Note: the following conditions must always be true:
19#   ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
20#   PARAMS_PHYS must be within 4MB of ZRELADDR
21#   INITRD_PHYS must be in RAM
22ZRELADDR    := $(zreladdr-y)
23PARAMS_PHYS := $(params_phys-y)
24INITRD_PHYS := $(initrd_phys-y)
25
26export ZRELADDR INITRD_PHYS PARAMS_PHYS
27
28targets := Image zImage xipImage bootpImage uImage
29
30ifeq ($(CONFIG_XIP_KERNEL),y)
31
32$(obj)/xipImage: vmlinux FORCE
33	$(call if_changed,objcopy)
34	@echo '  Kernel: $@ is ready (physical address: $(CONFIG_XIP_PHYS_ADDR))'
35
36$(obj)/Image $(obj)/zImage: FORCE
37	@echo 'Kernel configured for XIP (CONFIG_XIP_KERNEL=y)'
38	@echo 'Only the xipImage target is available in this case'
39	@false
40
41else
42
43$(obj)/xipImage: FORCE
44	@echo 'Kernel not configured for XIP (CONFIG_XIP_KERNEL!=y)'
45	@false
46
47$(obj)/Image: vmlinux FORCE
48	$(call if_changed,objcopy)
49	@echo '  Kernel: $@ is ready'
50
51$(obj)/compressed/vmlinux: $(obj)/Image FORCE
52	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
53
54$(obj)/zImage:	$(obj)/compressed/vmlinux FORCE
55	$(call if_changed,objcopy)
56	@echo '  Kernel: $@ is ready'
57
58endif
59
60targets += $(dtb-y)
61
62# Rule to build device tree blobs
63$(obj)/%.dtb: $(src)/dts/%.dts FORCE
64	$(call if_changed_dep,dtc)
65
66$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
67
68clean-files := *.dtb
69
70ifneq ($(LOADADDR),)
71  UIMAGE_LOADADDR=$(LOADADDR)
72else
73  ifeq ($(CONFIG_ZBOOT_ROM),y)
74    UIMAGE_LOADADDR=$(CONFIG_ZBOOT_ROM_TEXT)
75  else
76    UIMAGE_LOADADDR=$(ZRELADDR)
77  endif
78endif
79
80check_for_multiple_loadaddr = \
81if [ $(words $(UIMAGE_LOADADDR)) -gt 1 ]; then \
82	echo 'multiple load addresses: $(UIMAGE_LOADADDR)'; \
83	echo 'This is incompatible with uImages'; \
84	echo 'Specify LOADADDR on the commandline to build an uImage'; \
85	false; \
86fi
87
88$(obj)/uImage:	$(obj)/zImage FORCE
89	@$(check_for_multiple_loadaddr)
90	$(call if_changed,uimage)
91	@echo '  Image $@ is ready'
92
93$(obj)/bootp/bootp: $(obj)/zImage initrd FORCE
94	$(Q)$(MAKE) $(build)=$(obj)/bootp $@
95	@:
96
97$(obj)/bootpImage: $(obj)/bootp/bootp FORCE
98	$(call if_changed,objcopy)
99	@echo '  Kernel: $@ is ready'
100
101PHONY += initrd FORCE
102initrd:
103	@test "$(INITRD_PHYS)" != "" || \
104	(echo This machine does not support INITRD; exit -1)
105	@test "$(INITRD)" != "" || \
106	(echo You must specify INITRD; exit -1)
107
108install: $(obj)/Image
109	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
110	$(obj)/Image System.map "$(INSTALL_PATH)"
111
112zinstall: $(obj)/zImage
113	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
114	$(obj)/zImage System.map "$(INSTALL_PATH)"
115
116uinstall: $(obj)/uImage
117	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
118	$(obj)/uImage System.map "$(INSTALL_PATH)"
119
120zi:
121	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
122	$(obj)/zImage System.map "$(INSTALL_PATH)"
123
124i:
125	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
126	$(obj)/Image System.map "$(INSTALL_PATH)"
127
128subdir-	    := bootp compressed
129