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bbb0b128 SG |
1 | # |
2 | # Copyright (c) 2011 The Chromium OS Authors. | |
3 | # | |
1a459660 | 4 | # SPDX-License-Identifier: GPL-2.0+ |
bbb0b128 SG |
5 | # |
6 | ||
7 | # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is | |
8 | # enabled. See doc/README.fdt-control for more details. | |
9 | ||
6ab6b2af MY |
10 | DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%) |
11 | ifeq ($(DEVICE_TREE),) | |
3284c8b8 | 12 | DEVICE_TREE := unset |
6ab6b2af | 13 | endif |
c8391a0e | 14 | |
27cb7300 JB |
15 | ARCH_PATH := arch/$(ARCH)/dts |
16 | dtb_depends := arch-dtbs | |
17 | ||
d18926af SG |
18 | ifneq ($(EXT_DTB),) |
19 | DTB := $(EXT_DTB) | |
63b4b5ba | 20 | else |
27cb7300 JB |
21 | DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb |
22 | dtb_depends += $(DTB:.dtb=.dts) | |
63b4b5ba | 23 | endif |
c8391a0e | 24 | |
9bd76b80 GS |
25 | # Pass the original device tree file through fdtgrep twice. The first pass |
26 | # removes any unwanted nodes (i.e. those which don't have the | |
27 | # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second | |
28 | # pass removes various unused properties from the remaining nodes. | |
29 | # The output is typically a much smaller device tree file. | |
30 | ifeq ($(CONFIG_TPL_BUILD),y) | |
31 | fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl | |
32 | else | |
33 | fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl | |
34 | endif | |
35 | quiet_cmd_fdtgrep = FDTGREP $@ | |
36 | cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ | |
37 | -n /chosen -n /config -O dtb | \ | |
38 | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ | |
39 | $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) | |
40 | ||
41 | $(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE | |
42 | $(call if_changed,fdtgrep) | |
43 | ||
3284c8b8 | 44 | $(obj)/dt.dtb: $(DTB) FORCE |
b9d1dbd4 | 45 | $(call if_changed,shipped) |
bbb0b128 | 46 | |
9bd76b80 | 47 | targets += dt.dtb dt-spl.dtb |
bbb0b128 | 48 | |
27cb7300 JB |
49 | $(DTB): $(dtb_depends) |
50 | ifeq ($(EXT_DTB),) | |
51 | $(Q)$(MAKE) $(build)=$(ARCH_PATH) $@ | |
52 | endif | |
3284c8b8 MY |
53 | $(Q)test -e $@ || ( \ |
54 | echo >&2; \ | |
55 | echo >&2 "Device Tree Source is not correctly specified."; \ | |
56 | echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \ | |
57 | echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \ | |
58 | echo >&2; \ | |
59 | /bin/false) | |
60 | ||
61 | arch-dtbs: | |
27cb7300 | 62 | $(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs |
bbb0b128 | 63 | |
9bd76b80 | 64 | .SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S |
bbb0b128 | 65 | |
9bd76b80 GS |
66 | |
67 | ifeq ($(CONFIG_SPL_BUILD),y) | |
68 | obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o | |
69 | # support "out-of-tree" build for dtb-spl | |
70 | $(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE | |
71 | $(call if_changed_dep,as_o_S) | |
72 | else | |
6ab6b2af | 73 | obj-$(CONFIG_OF_EMBED) := dt.dtb.o |
9bd76b80 | 74 | endif |
bbb0b128 | 75 | |
9bd76b80 | 76 | dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb |
6ab6b2af | 77 | @: |
bbb0b128 | 78 | |
9bd76b80 | 79 | clean-files := dt.dtb.S dt-spl.dtb.S |
3284c8b8 MY |
80 | |
81 | # Let clean descend into dts directories | |
be6b2b31 | 82 | subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts |