dts/Makefile

   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
   8 DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
   9 ifeq ($(DEVICE_TREE),)
  10 DEVICE_TREE := unset
  11 endif
  12
  13 ifeq ($(CONFIG_OF_UPSTREAM),y)
  14 ifeq ($(CONFIG_ARM64),y)
  15 dt_dir := dts/upstream/src/arm64
  16 else
  17 dt_dir := dts/upstream/src/$(ARCH)
  18 endif
  19 else
  20 dt_dir := arch/$(ARCH)/dts
  21 endif
  22
  23 ifneq ($(CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS),)
  24 local_dtbos := local-dtbos
  25 else
  26 local_dtbos :=
  27 endif
  28
  29 ifneq ($(EXT_DTB),)
  30 DTB := $(EXT_DTB)
  31 else
  32 DTB := $(dt_dir)/$(DEVICE_TREE).dtb
  33 endif
  34
  35 $(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
  36         mkdir -p $(dir $@)
  37         $(call if_changed,fdtgrep)
  38
  39 ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
  40 $(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
  41         $(call if_changed,fdt_rm_props)
  42 else
  43 $(obj)/dt.dtb: $(DTB) FORCE
  44         $(call if_changed,shipped)
  45 endif
  46
  47 targets += 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
  58 PHONY += arch-dtbs
  59 arch-dtbs:
  60         $(Q)$(MAKE) $(build)=$(dt_dir) dtbs
  61
  62 ifneq ($(CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS),)
  63 PHONY += local-dtbos
  64 local-dtbos:
  65         $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbos
  66 endif
  67
  68 ifeq ($(CONFIG_XPL_BUILD),y)
  69 obj-$(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         $(call if_changed_dep,as_o_S)
  73 else
  74 obj-$(CONFIG_OF_EMBED) := dt.dtb.o
  75 endif
  76
  77 # Target for U-Boot proper
  78 dtbs: $(obj)/dt.dtb
  79         @:
  80
  81 # Target for SPL/TPL
  82 spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
  83         @:
  84
  85 clean-files := dt.dtb.S
  86
  87 # Let clean descend into dts directories
  88 subdir- += ../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)