Makefile 1.6 KB

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  1. # SPDX-License-Identifier: GPL-2.0+
  2. #
  3. # Copyright (c) 2011 The Chromium OS Authors.
  4. # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
  5. # enabled. See doc/README.fdt-control for more details.
  6. DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
  7. ifeq ($(DEVICE_TREE),)
  8. DEVICE_TREE := unset
  9. endif
  10. ifneq ($(EXT_DTB),)
  11. DTB := $(EXT_DTB)
  12. else
  13. DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
  14. endif
  15. $(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
  16. mkdir -p $(dir $@)
  17. $(call if_changed,fdtgrep)
  18. ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
  19. $(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
  20. $(call if_changed,fdt_rm_props)
  21. else
  22. $(obj)/dt.dtb: $(DTB) FORCE
  23. $(call if_changed,shipped)
  24. endif
  25. targets += dt.dtb
  26. $(DTB): arch-dtbs
  27. $(Q)test -e $@ || ( \
  28. echo >&2; \
  29. echo >&2 "Device Tree Source ($@) is not correctly specified."; \
  30. echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
  31. echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
  32. echo >&2; \
  33. /bin/false)
  34. PHONY += arch-dtbs
  35. arch-dtbs:
  36. $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
  37. ifeq ($(CONFIG_SPL_BUILD),y)
  38. obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
  39. # support "out-of-tree" build for dtb-spl
  40. $(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
  41. $(call if_changed_dep,as_o_S)
  42. else
  43. obj-$(CONFIG_OF_EMBED) := dt.dtb.o
  44. endif
  45. # Target for U-Boot proper
  46. dtbs: $(obj)/dt.dtb
  47. @:
  48. # Target for SPL/TPL
  49. spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
  50. @:
  51. clean-files := dt.dtb.S
  52. # Let clean descend into dts directories
  53. subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts ../arch/powerpc/dts ../arch/riscv/dts