1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # linux/arch/arm/boot/bootp/Makefile
4 #
5 # This file is included by the global makefile
6 # architecture-specific flags and dependencies
7 #
8
9 ifdef PHYS_OFFSET
10 add_hex = $(shell printf 0x%x $$(( $(1) + $(2)
11
12 # If PHYS_OFFSET is set, INITRD_PHYS and PARAM
13 # otherwise they must be passed on the command
14 #
15 # Note: the following conditions must always b
16 # PARAMS_PHYS must be within 4MB of ZRELADDR
17 # INITRD_PHYS must be in RAM
18
19 PARAMS_PHYS := $(call add_hex, $(PHYS_OFFSET),
20
21 # guess an initrd location if possible
22 initrd_offset-$(CONFIG_ARCH_FOOTBRIDGE) += 0x0
23 initrd_offset-$(CONFIG_ARCH_SA1100) += 0x0
24 initrd_offset-$(CONFIG_ARCH_RPC) += 0x0
25 INITRD_OFFSET := $(initrd_offset-y)
26 ifdef INITRD_OFFSET
27 INITRD_PHYS := $(call add_hex, $(PHYS_OFFSET),
28 endif
29
30 endif
31
32 PHONY += initrd
33 initrd:
34 @test "$(PARAMS_PHYS)" != "" || \
35 (echo bootpImage: You must specify PHY
36 @test "$(INITRD_PHYS)" != "" || \
37 (echo bootpImage: You must specify INI
38 @test "$(INITRD)" != "" || \
39 (echo bootpImage: You must specify INI
40
41 LDFLAGS_bootp := --no-undefined -X \
42 --defsym initrd_phys=$(INITRD
43 --defsym params_phys=$(PARAMS
44 AFLAGS_initrd.o :=-DINITRD=\"$(INITRD)\"
45
46 targets := bootp init.o kernel.o initrd.o
47
48 # Note that bootp.lds picks up kernel.o and in
49 $(obj)/bootp: $(src)/bootp.lds $(addprefix $
50 $(call if_changed,ld)
51
52 # kernel.o and initrd.o includes a binary imag
53 # .incbin, a dependency which is not tracked a
54
55 $(obj)/kernel.o: arch/arm/boot/zImage FORCE
56
57 $(obj)/initrd.o: initrd $(INITRD) FORCE
58
59 PHONY += $(INITRD)
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