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 ifneq ($(EXT_DTB),)
  14 DTB := $(EXT_DTB)
  15 else
  16 DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
  17 endif
  18
  19 $(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
  20         $(call if_changed,fdtgrep)
  21
  22 ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
  23 $(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
  24         $(call if_changed,fdt_rm_props)
  25 else
  26 $(obj)/dt.dtb: $(DTB) FORCE
  27         $(call if_changed,shipped)
  28 endif
  29
  30 targets += dt.dtb dt-spl.dtb
  31
  32 $(DTB): arch-dtbs
  33         $(Q)test -e $@ || (                                             \
  34         echo >&2;                                                       \
  35         echo >&2 "Device Tree Source is not correctly specified.";      \
  36         echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";          \
  37         echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";  \
  38         echo >&2;                                                       \
  39         /bin/false)
  40
  41 PHONY += arch-dtbs
  42 arch-dtbs:
  43         $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
  44
  45 ifeq ($(CONFIG_SPL_BUILD),y)
  46 obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
  47 # support "out-of-tree" build for dtb-spl
  48 $(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
  49         $(call if_changed_dep,as_o_S)
  50 else
  51 obj-$(CONFIG_OF_EMBED) := dt.dtb.o
  52 endif
  53
  54 dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb
  55         @:
  56
  57 clean-files := dt.dtb.S dt-spl.dtb.S
  58
  59 # Let clean descend into dts directories
  60 subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts ../arch/powerpc/dts ../arch/riscv/dts