xref: /openbmc/linux/arch/arm/boot/Makefile (revision 97e6ea6d) 
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
14OBJCOPYFLAGS	:=-O binary -R .comment -S
15
16ifneq ($(MACHINE),)
17include $(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
34cmd_deflate_xip_data = $(CONFIG_SHELL) -c \
35	'$(srctree)/$(src)/deflate_xip_data.sh $< $@'
36
37ifeq ($(CONFIG_XIP_DEFLATED_DATA),y)
38quiet_cmd_mkxip = XIPZ    $@
39cmd_mkxip = $(cmd_objcopy) && $(cmd_deflate_xip_data)
40else
41quiet_cmd_mkxip = $(quiet_cmd_objcopy)
42cmd_mkxip = $(cmd_objcopy)
43endif
44
45$(obj)/xipImage: vmlinux FORCE
46	$(call if_changed,mkxip)
47	@$(kecho) '  Physical Address of xipImage: $(CONFIG_XIP_PHYS_ADDR)'
48
49$(obj)/Image $(obj)/zImage: FORCE
50	@echo 'Kernel configured for XIP (CONFIG_XIP_KERNEL=y)'
51	@echo 'Only the xipImage target is available in this case'
52	@false
53
54else
55
56$(obj)/xipImage: FORCE
57	@echo 'Kernel not configured for XIP (CONFIG_XIP_KERNEL!=y)'
58	@false
59
60$(obj)/Image: vmlinux FORCE
61	$(call if_changed,objcopy)
62
63$(obj)/compressed/vmlinux: $(obj)/Image FORCE
64	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
65
66$(obj)/zImage:	$(obj)/compressed/vmlinux FORCE
67	$(call if_changed,objcopy)
68
69endif
70
71ifneq ($(LOADADDR),)
72  UIMAGE_LOADADDR=$(LOADADDR)
73else
74  ifeq ($(CONFIG_ZBOOT_ROM),y)
75    UIMAGE_LOADADDR=$(CONFIG_ZBOOT_ROM_TEXT)
76  else
77    UIMAGE_LOADADDR=$(ZRELADDR)
78  endif
79endif
80
81check_for_multiple_loadaddr = \
82if [ $(words $(UIMAGE_LOADADDR)) -ne 1 ]; then \
83	echo 'multiple (or no) load addresses: $(UIMAGE_LOADADDR)'; \
84	echo 'This is incompatible with uImages'; \
85	echo 'Specify LOADADDR on the commandline to build an uImage'; \
86	false; \
87fi
88
89$(obj)/uImage:	$(obj)/zImage FORCE
90	@$(check_for_multiple_loadaddr)
91	$(call if_changed,uimage)
92
93$(obj)/bootp/bootp: $(obj)/zImage initrd FORCE
94	$(Q)$(MAKE) $(build)=$(obj)/bootp $@
95
96$(obj)/bootpImage: $(obj)/bootp/bootp FORCE
97	$(call if_changed,objcopy)
98
99PHONY += initrd
100initrd:
101	@test "$(INITRD_PHYS)" != "" || \
102	(echo This machine does not support INITRD; exit -1)
103	@test "$(INITRD)" != "" || \
104	(echo You must specify INITRD; exit -1)
105
106subdir-	    := bootp compressed dts
107