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 ($(EXT_DTB),)
  24 DTB := $(EXT_DTB)
  25 else
  26 DTB := $(dt_dir)/$(DEVICE_TREE).dtb
  27 endif
  28
  29 $(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
  30         mkdir -p $(dir $@)
  31         $(call if_changed,fdtgrep)
  32
  33 ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
  34 $(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
  35         $(call if_changed,fdt_rm_props)
  36 else
  37 $(obj)/dt.dtb: $(DTB) FORCE
  38         $(call if_changed,shipped)
  39 endif
  40
  41 targets += dt.dtb
  42
  43 $(DTB): arch-dtbs
  44         $(Q)test -e $@ || (                                             \
  45         echo >&2;                                                       \
  46         echo >&2 "Device Tree Source ($@) is not correctly specified."; \
  47         echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";          \
  48         echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";  \
  49         echo >&2;                                                       \
  50         /bin/false)
  51
  52 PHONY += arch-dtbs
  53 arch-dtbs:
  54         $(Q)$(MAKE) $(build)=$(dt_dir) dtbs
  55
  56 ifeq ($(CONFIG_SPL_BUILD),y)
  57 obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
  58 # support "out-of-tree" build for dtb-spl
  59 $(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
  60         $(call if_changed_dep,as_o_S)
  61 else
  62 obj-$(CONFIG_OF_EMBED) := dt.dtb.o
  63 endif
  64
  65 # Target for U-Boot proper
  66 dtbs: $(obj)/dt.dtb
  67         @:
  68
  69 # Target for SPL/TPL
  70 spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
  71         @:
  72
  73 clean-files := dt.dtb.S
  74
  75 # Let clean descend into dts directories
  76 subdir- += ../arch/arc/dts ../arch/arm/dts ../arch/m68k/dts ../arch/microblaze/dts      \
  77            ../arch/mips/dts ../arch/nios2/dts ../arch/powerpc/dts ../arch/riscv/dts     \
  78            ../arch/sandbox/dts ../arch/sh/dts ../arch/x86/dts ../arch/xtensa/dts        \
  79            ./upstream/src/arm64 ./upstream/src/$(ARCH)