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_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
  20         mkdir -p $(dir $@)
  21         $(call if_changed,fdtgrep)
  22
  23 ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
  24 $(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
  25         $(call if_changed,fdt_rm_props)
  26 else
  27 $(obj)/dt.dtb: $(DTB) FORCE
  28         $(call if_changed,shipped)
  29 endif
  30
  31 targets += dt.dtb
  32
  33 $(DTB): arch-dtbs
  34         $(Q)test -e $@ || (                                             \
  35         echo >&2;                                                       \
  36         echo >&2 "Device Tree Source ($@) is not correctly specified."; \
  37         echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";          \
  38         echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";  \
  39         echo >&2;                                                       \
  40         /bin/false)
  41
  42 PHONY += arch-dtbs
  43 arch-dtbs:
  44         $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
  45
  46 ifeq ($(CONFIG_SPL_BUILD),y)
  47 obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
  48 # support "out-of-tree" build for dtb-spl
  49 $(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
  50         $(call if_changed_dep,as_o_S)
  51 else
  52 obj-$(CONFIG_OF_EMBED) := dt.dtb.o
  53 endif
  54
  55 # Target for U-Boot proper
  56 dtbs: $(obj)/dt.dtb
  57         @:
  58
  59 # Target for SPL/TPL
  60 spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
  61         @:
  62
  63 clean-files := dt.dtb.S
  64
  65 # Let clean descend into dts directories
  66 subdir- += ../arch/arc/dts ../arch/arm/dts ../arch/m68k/dts ../arch/microblaze/dts      \
  67            ../arch/mips/dts ../arch/nios2/dts ../arch/powerpc/dts ../arch/riscv/dts     \
  68            ../arch/sandbox/dts ../arch/sh/dts ../arch/x86/dts ../arch/xtensa/dts