dts/Makefile

   1 #
   2 # Copyright (c) 2011 The Chromium OS Authors.
   3 #
   4 # SPDX-License-Identifier:      GPL-2.0+
   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
  10 DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
  11 ifeq ($(DEVICE_TREE),)
  12 DEVICE_TREE := unset
  13 endif
  14
  15 DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
  16
  17 quiet_cmd_copy = COPY    $@
  18       cmd_copy = cp $< $@
  19
  20 $(obj)/dt.dtb: $(DTB) FORCE
  21         $(call if_changed,copy)
  22
  23 targets += dt.dtb
  24
  25 $(DTB): arch-dtbs
  26         $(Q)test -e $@ || (                                             \
  27         echo >&2;                                                       \
  28         echo >&2 "Device Tree Source is not correctly specified.";      \
  29         echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";          \
  30         echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";  \
  31         echo >&2;                                                       \
  32         /bin/false)
  33
  34 arch-dtbs:
  35         $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
  36
  37 .SECONDARY: $(obj)/dt.dtb.S
  38
  39 obj-$(CONFIG_OF_EMBED) := dt.dtb.o
  40
  41 dtbs: $(obj)/dt.dtb
  42         @:
  43
  44 clean-files := dt.dtb.S
  45
  46 # Let clean descend into dts directories
  47 subdir- += ../arch/*/dts