jcs.org
"Das U-Boot" Source Tree
1# SPDX-License-Identifier: GPL-2.0+
2#
3# Copyright (c) 2011 The Chromium OS Authors.
4
5# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
6# enabled. See doc/README.fdt-control for more details.
7
8DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
9ifeq ($(DEVICE_TREE),)
10DEVICE_TREE := unset
11endif
12
13ifeq ($(CONFIG_OF_UPSTREAM),y)
14ifeq ($(CONFIG_ARM64),y)
15dt_dir := dts/upstream/src/arm64
16else
17dt_dir := dts/upstream/src/$(ARCH)
18endif
19else
20dt_dir := arch/$(ARCH)/dts
21endif
22
23ifneq ($(CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS),)
24local_dtbos := local-dtbos
25else
26local_dtbos :=
27endif
28
29ifneq ($(EXT_DTB),)
30DTB := $(EXT_DTB)
31else
32DTB := $(dt_dir)/$(DEVICE_TREE).dtb
33endif
34
35$(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
36 mkdir -p $(dir $@)
37 $(call if_changed,fdtgrep)
38
39ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
40$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
41 $(call if_changed,fdt_rm_props)
42else
43$(obj)/dt.dtb: $(DTB) FORCE
44 $(call if_changed,shipped)
45endif
46
47targets += dt.dtb
48
49$(DTB): arch-dtbs $(local_dtbos)
50 $(Q)test -e $@ || ( \
51 echo >&2; \
52 echo >&2 "Device Tree Source ($@) is not correctly specified."; \
53 echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
54 echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
55 echo >&2; \
56 /bin/false)
57
58PHONY += arch-dtbs
59arch-dtbs:
60 $(Q)$(MAKE) $(build)=$(dt_dir) dtbs
61
62ifneq ($(CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS),)
63PHONY += local-dtbos
64local-dtbos:
65 $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbos
66endif
67
68ifeq ($(CONFIG_XPL_BUILD),y)
69obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
70# support "out-of-tree" build for dtb-spl
71$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
72 $(call if_changed_dep,as_o_S)
73else
74obj-$(CONFIG_OF_EMBED) := dt.dtb.o
75endif
76
77# Target for U-Boot proper
78dtbs: $(obj)/dt.dtb
79 @:
80
81# Target for SPL/TPL
82spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
83 @:
84
85clean-files := dt.dtb.S
86
87# Let clean descend into dts directories
88subdir- += ../arch/arc/dts ../arch/arm/dts ../arch/m68k/dts ../arch/microblaze/dts \
89 ../arch/mips/dts ../arch/nios2/dts ../arch/powerpc/dts ../arch/riscv/dts \
90 ../arch/sandbox/dts ../arch/sh/dts ../arch/x86/dts ../arch/xtensa/dts \
91 ./upstream/src/arm64 ./upstream/src/$(ARCH)