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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +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
#
# Copyright (c) 2011 The Chromium OS Authors.
# 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/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:27 +00:00
DEVICE_TREE := unset
dts: re-write dts/Makefile more simply with Kbuild Useful rules in scripts/Makefile.lib allows us to easily generate a device tree blob and wrap it in assembly code. We do not need to parse a linker script to get output format and arch. This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:25 +00:00
endif
dts/Makefile: unify cpp/dtc include paths *.dts may use #include (via cpp) or /include/ (via dtc; assuming a newer dtc). The choice is up to the creator of the DT. Create a common variable DTC_INCDIRS that lists the paths searched by include statements, and update cpp and dtc invocation to use them. For cpp, also specify -nostdinc to ensure the same set of paths is available to both type of include statement. For dtc, create a new DTC_FLAGS variable to hold all the flags passed to dtc. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2013-07-24 17:09:19 +00:00
fdt: Rename the DEV_TREE_BIN Makefile flag to to EXT_DTB This seems like a better name. This is a patch-up to the earlier commit 63b4b5b, and also removes a redundant Makefile change. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-12 13:24:43 +00:00
ifneq ($(EXT_DTB),)
DTB := $(EXT_DTB)
fdt: Add DEV_TREE_BIN option to specify a device tree binary file In some cases, an externally-built device tree binary is required to be attached to U-Boot. An example is when using image signing, since in that case the .dtb file must include the public keys. Add a DEV_TREE_BIN option to the Makefile, and update the documentation. Usage is something like: make DEV_TREE_BIN=boot/am335x-boneblack-pubkey.dtb Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-03 04:04:50 +00:00
else
Revert "Ensure device tree DTS is compiled" This reverts commit 27cb7300ffda7a3f1581f0f5a2d3bfe59b97ad67. I am not sure if I correctly understood the log of commit 27cb7300ffda ("Ensure device tree DTS is compiled"), but the code-diff looks like it was trying to solve the missed re-compilation when .dts was modified. Recently, commit 2737dfe096b6 ("kbuild: make arch-dtbs target PHONY") fixed the issue in a more correct and more complete way. Anyway, since the former commit, we see a clumsy log like this: make[2]: 'arch/sandbox/dts/sandbox.dtb' is up to date Another problem is, it created multiple paths to descend into arch/*/dts/, causing a race in parallel building. So, let's revert it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14 05:58:36 +00:00
DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).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
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
Makefile: Tidy up SPL dtb production Use the SPL_NAME variable to simplify the rules. Drop the SPL targets clean-files since the SPL and TPL dts/ directories are removed by existing rules. Move the SPL rules into a new spl_dtbs to avoid the complicated $(if) construct. Also drop unused pieces from the 'targets' variable. With this, SPL and TPL have separate dtbs which respect the various u-boot,dm-spl / u-boot,dm-tpl tags. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-23 02:30:15 +00:00
$(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
Makefile: Build SPL dtbs in the spl/ directory Rather than putting these in the top-level dts/ directory (which is intended for U-Boot proper), put them in the correct subdirectory for SPL (either spl/ or tpl/). This is where other SPL targets are kept, so this is more consistent. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-23 02:30:14 +00:00
mkdir -p $(dir $@)
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
$(call if_changed,fdtgrep)
dts: add property removal option CONFIG_OF_REMOVE_PROPS This can be used for device tree size reduction similar as CONFIG_OF_SPL_REMOVE_PROPS option. Some boards must pass the built-in DTB unchanged to the kernel, thus we may not cut it down unconditionally. Therefore enable the property removal list option only if CONFIG_OF_DTB_PROPS_REMOVE is selected. Signed-off-by: Anatolij Gustschin <agust@denx.de>
2020-01-12 14:57:42 +00:00
ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
$(call if_changed,fdt_rm_props)
else
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(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)
dts: add property removal option CONFIG_OF_REMOVE_PROPS This can be used for device tree size reduction similar as CONFIG_OF_SPL_REMOVE_PROPS option. Some boards must pass the built-in DTB unchanged to the kernel, thus we may not cut it down unconditionally. Therefore enable the property removal list option only if CONFIG_OF_DTB_PROPS_REMOVE is selected. Signed-off-by: Anatolij Gustschin <agust@denx.de>
2020-01-12 14:57:42 +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
Makefile: Tidy up SPL dtb production Use the SPL_NAME variable to simplify the rules. Drop the SPL targets clean-files since the SPL and TPL dts/ directories are removed by existing rules. Move the SPL rules into a new spl_dtbs to avoid the complicated $(if) construct. Also drop unused pieces from the 'targets' variable. With this, SPL and TPL have separate dtbs which respect the various u-boot,dm-spl / u-boot,dm-tpl tags. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-23 02:30:15 +00:00
targets += dt.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
Revert "Ensure device tree DTS is compiled" This reverts commit 27cb7300ffda7a3f1581f0f5a2d3bfe59b97ad67. I am not sure if I correctly understood the log of commit 27cb7300ffda ("Ensure device tree DTS is compiled"), but the code-diff looks like it was trying to solve the missed re-compilation when .dts was modified. Recently, commit 2737dfe096b6 ("kbuild: make arch-dtbs target PHONY") fixed the issue in a more correct and more complete way. Anyway, since the former commit, we see a clumsy log like this: make[2]: 'arch/sandbox/dts/sandbox.dtb' is up to date Another problem is, it created multiple paths to descend into arch/*/dts/, causing a race in parallel building. So, let's revert it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14 05:58:36 +00:00
$(DTB): arch-dtbs
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(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 $@ || ( \
echo >&2; \
dts: Log name of expected .dtb file Make it more obvious what .dts file was expected by the build system. When adding support for a new board, I kept getting this error message, assuming I passed a wrong DEVICE_TREE parameter. However, what was really the mistake was that the entry in `arch/arm/dts/Makefile` was missing, and u-boot didn't like not being able to find the .dtb file that should have been produced. Simply logging the expected .dtb file name should make it easier to spot such mistakes. Signed-off-by: Florian Klink <flokli@flokli.de>
2020-12-27 20:34:43 +00:00
echo >&2 "Device Tree Source ($@) is not correctly specified."; \
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/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-02-05 02:28:27 +00:00
echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
echo >&2; \
/bin/false)
kbuild: make arch-dtbs target PHONY Without this, the arch-dtbs target only gets evaluated when building U-Boot the first time, not when re-building (incrementally building) U-Boot. Thus incremental builds ignore changes to DTB files. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-02-26 19:20:25 +00:00
PHONY += arch-dtbs
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(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
arch-dtbs:
Revert "Ensure device tree DTS is compiled" This reverts commit 27cb7300ffda7a3f1581f0f5a2d3bfe59b97ad67. I am not sure if I correctly understood the log of commit 27cb7300ffda ("Ensure device tree DTS is compiled"), but the code-diff looks like it was trying to solve the missed re-compilation when .dts was modified. Recently, commit 2737dfe096b6 ("kbuild: make arch-dtbs target PHONY") fixed the issue in a more correct and more complete way. Anyway, since the former commit, we see a clumsy log like this: make[2]: 'arch/sandbox/dts/sandbox.dtb' is up to date Another problem is, it created multiple paths to descend into arch/*/dts/, causing a race in parallel building. So, let's revert it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14 05:58:36 +00:00
$(Q)$(MAKE) $(build)=arch/$(ARCH)/dts 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 $(OBJCOPY) insists on adding the path to the generated symbol names, to ensure consistency it should be invoked from the directory where the .dtb file is located and given the input file name without the path. This commit contains my entry for the ugliest Makefile / shell interaction competition. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-15 05:48:21 +00:00
spl: make CONFIG_OF_EMBED pass dts through fdtgrep Building spl with CONFIG_OF_EMBED enabled results in an error message on my board: "SPL image too big". This is because the fdtgrep build step is only executed for CONFIG_OF_SEPARATE. Fix this by moving the fdtgrep build step ('cmd_fdtgreo') from scripts/Makefile.spl to dts/Makefile so that the reduced dtb is available for all kinds of spl builds. The resulting variable name for the embedded device tree blob changes, too, which is why common.h and fdtdec.c have tiny changes. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-21 12:29:56 +00:00
ifeq ($(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
Makefile: Tidy up SPL dtb production Use the SPL_NAME variable to simplify the rules. Drop the SPL targets clean-files since the SPL and TPL dts/ directories are removed by existing rules. Move the SPL rules into a new spl_dtbs to avoid the complicated $(if) construct. Also drop unused pieces from the 'targets' variable. With this, SPL and TPL have separate dtbs which respect the various u-boot,dm-spl / u-boot,dm-tpl tags. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-23 02:30:15 +00:00
# Target for U-Boot proper
dtbs: $(obj)/dt.dtb
@:
# Target for SPL/TPL
spl_dtbs: $(obj)/dt-$(SPL_NAME).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
Makefile: Tidy up SPL dtb production Use the SPL_NAME variable to simplify the rules. Drop the SPL targets clean-files since the SPL and TPL dts/ directories are removed by existing rules. Move the SPL rules into a new spl_dtbs to avoid the complicated $(if) construct. Also drop unused pieces from the 'targets' variable. With this, SPL and TPL have separate dtbs which respect the various u-boot,dm-spl / u-boot,dm-tpl tags. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-23 02:30:15 +00:00
clean-files := dt.dtb.S
dts: generate multiple device tree blobs It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(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
dts: riscv: update makefile to also clean the RISC-V dts directory Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
2018-11-22 10:26:11 +00:00
subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts ../arch/powerpc/dts ../arch/riscv/dts
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