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fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
#
# Copyright (c) 2011 The Chromium OS Authors.
#
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-07-08 07:37:19 +00:00
# SPDX-License-Identifier: GPL-2.0+
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
#
# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
# enabled. See doc/README.fdt-control for more details.
dts: re-write dts/Makefile more simply with Kbuild Useful rules in scripts/Makefile.lib allows us to easily generate a device tree blob and wrap it in assembly code. We do not need to parse a linker script to get output format and arch. This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:25 +00:00
DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
ifeq ($(DEVICE_TREE),)
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:27 +00:00
DEVICE_TREE := unset
dts: re-write dts/Makefile more simply with Kbuild Useful rules in scripts/Makefile.lib allows us to easily generate a device tree blob and wrap it in assembly code. We do not need to parse a linker script to get output format and arch. This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:25 +00:00
endif
dts/Makefile: unify cpp/dtc include paths *.dts may use #include (via cpp) or /include/ (via dtc; assuming a newer dtc). The choice is up to the creator of the DT. Create a common variable DTC_INCDIRS that lists the paths searched by include statements, and update cpp and dtc invocation to use them. For cpp, also specify -nostdinc to ensure the same set of paths is available to both type of include statement. For dtc, create a new DTC_FLAGS variable to hold all the flags passed to dtc. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2013-07-24 17:09:19 +00:00
Ensure device tree DTS is compiled Enables custom DTS files, or those not associated with a specific target, to be compiled into a boot image. Signed-off-by: James Balean <james@balean.com.au> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Simon Glass <sjg@chromium.org>
2017-03-16 04:11:31 +00:00
ARCH_PATH := arch/$(ARCH)/dts
dtb_depends := arch-dtbs
fdt: Rename the DEV_TREE_BIN Makefile flag to to EXT_DTB This seems like a better name. This is a patch-up to the earlier commit 63b4b5b, and also removes a redundant Makefile change. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-12 13:24:43 +00:00
ifneq ($(EXT_DTB),)
DTB := $(EXT_DTB)
fdt: Add DEV_TREE_BIN option to specify a device tree binary file In some cases, an externally-built device tree binary is required to be attached to U-Boot. An example is when using image signing, since in that case the .dtb file must include the public keys. Add a DEV_TREE_BIN option to the Makefile, and update the documentation. Usage is something like: make DEV_TREE_BIN=boot/am335x-boneblack-pubkey.dtb Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-03 04:04:50 +00:00
else
Ensure device tree DTS is compiled Enables custom DTS files, or those not associated with a specific target, to be compiled into a boot image. Signed-off-by: James Balean <james@balean.com.au> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Simon Glass <sjg@chromium.org>
2017-03-16 04:11:31 +00:00
DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb
dtb_depends += $(DTB:.dtb=.dts)
fdt: Add DEV_TREE_BIN option to specify a device tree binary file In some cases, an externally-built device tree binary is required to be attached to U-Boot. An example is when using image signing, since in that case the .dtb file must include the public keys. Add a DEV_TREE_BIN option to the Makefile, and update the documentation. Usage is something like: make DEV_TREE_BIN=boot/am335x-boneblack-pubkey.dtb Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-03 04:04:50 +00:00
endif
dts/Makefile: unify cpp/dtc include paths *.dts may use #include (via cpp) or /include/ (via dtc; assuming a newer dtc). The choice is up to the creator of the DT. Create a common variable DTC_INCDIRS that lists the paths searched by include statements, and update cpp and dtc invocation to use them. For cpp, also specify -nostdinc to ensure the same set of paths is available to both type of include statement. For dtc, create a new DTC_FLAGS variable to hold all the flags passed to dtc. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2013-07-24 17:09:19 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
$(call if_changed,fdtgrep)
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:27 +00:00
$(obj)/dt.dtb: $(DTB) FORCE
kbuild: use cmd_shipped instead of cmd_copy We already have cmd_shipped in scripts/Makefile.lib. Use it rather than defining a new command cmd_copy. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-06-04 01:11:18 +00:00
$(call if_changed,shipped)
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
targets += dt.dtb dt-spl.dtb
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
Ensure device tree DTS is compiled Enables custom DTS files, or those not associated with a specific target, to be compiled into a boot image. Signed-off-by: James Balean <james@balean.com.au> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Simon Glass <sjg@chromium.org>
2017-03-16 04:11:31 +00:00
$(DTB): $(dtb_depends)
ifeq ($(EXT_DTB),)
$(Q)$(MAKE) $(build)=$(ARCH_PATH) $@
endif
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:27 +00:00
$(Q)test -e $@ || ( \
echo >&2; \
echo >&2 "Device Tree Source is not correctly specified."; \
echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
echo >&2; \
/bin/false)
arch-dtbs:
Ensure device tree DTS is compiled Enables custom DTS files, or those not associated with a specific target, to be compiled into a boot image. Signed-off-by: James Balean <james@balean.com.au> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Simon Glass <sjg@chromium.org>
2017-03-16 04:11:31 +00:00
$(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
.SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
ifeq ($(CONFIG_SPL_BUILD),y)
obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
# support "out-of-tree" build for dtb-spl
$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
$(call if_changed_dep,as_o_S)
else
dts: re-write dts/Makefile more simply with Kbuild Useful rules in scripts/Makefile.lib allows us to easily generate a device tree blob and wrap it in assembly code. We do not need to parse a linker script to get output format and arch. This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:25 +00:00
obj-$(CONFIG_OF_EMBED) := dt.dtb.o
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
endif
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb
dts: re-write dts/Makefile more simply with Kbuild Useful rules in scripts/Makefile.lib allows us to easily generate a device tree blob and wrap it in assembly code. We do not need to parse a linker script to get output format and arch. This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:25 +00:00
@:
fdt: Add support for embedded device tree (CONFIG_OF_EMBED) This new option allows U-Boot to embed a binary device tree into its image to allow run-time control of peripherals. This device tree is for U-Boot's own use and is not necessarily the same one as is passed to the kernel. The device tree compiler output should be placed in the $(obj) rooted tree. Since $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
clean-files := dt.dtb.S dt-spl.dtb.S
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:27 +00:00
# Let clean descend into dts directories
Revert "devicetree: use wildcard to clean arch subdir" This reverts commit 67871a595873930a0a536b1685e5caac53766701. Since that commit, out-of-tree cleaning emits lots of warnings. $ make O=foo clean make[1]: Entering directory `/home/masahiro/workspace/u-boot/foo' ../dts/../arch/arm/dts/Makefile:209: warning: overriding commands for target `dtbs' ../dts/../arch/arc/dts/Makefile:15: warning: ignoring old commands for target `dtbs' ../dts/../arch/microblaze/dts/Makefile:13: warning: overriding commands for target `dtbs' ../dts/../arch/arm/dts/Makefile:209: warning: ignoring old commands for target `dtbs' ../dts/../arch/mips/dts/Makefile:14: warning: overriding commands for target `dtbs' ../dts/../arch/microblaze/dts/Makefile:13: warning: ignoring old commands for target `dtbs' ../dts/../arch/nios2/dts/Makefile:13: warning: overriding commands for target `dtbs' ../dts/../arch/mips/dts/Makefile:14: warning: ignoring old commands for target `dtbs' ../dts/../arch/powerpc/dts/Makefile:13: warning: overriding commands for target `dtbs' ../dts/../arch/nios2/dts/Makefile:13: warning: ignoring old commands for target `dtbs' ../dts/../arch/sandbox/dts/Makefile:14: warning: overriding commands for target `dtbs' ../dts/../arch/powerpc/dts/Makefile:13: warning: ignoring old commands for target `dtbs' ../dts/../arch/x86/dts/Makefile:22: warning: overriding commands for target `dtbs' ../dts/../arch/sandbox/dts/Makefile:14: warning: ignoring old commands for target `dtbs' make[1]: Leaving directory `/home/masahiro/workspace/u-boot/foo' Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-01-23 18:50:02 +00:00
subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts
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