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openmptcprouter/root/package/boot/uboot-rockchip/patches/105-Only-build-dtc-if-needed.patch
Ycarus (Yannick Chabanois) f2bf060a04 Update rockchip uboot
2022-11-18 18:10:38 +01:00

125 lines
3.5 KiB
Diff

--- a/Makefile
+++ b/Makefile
@@ -413,13 +413,7 @@ PERL = perl
PYTHON ?= python
PYTHON2 = python2
PYTHON3 ?= python3
-
-# The devicetree compiler and pylibfdt are automatically built unless DTC is
-# provided. If DTC is provided, it is assumed the pylibfdt is available too.
-DTC_INTREE := $(objtree)/scripts/dtc/dtc
-DTC ?= $(DTC_INTREE)
-DTC_MIN_VERSION := 010406
-
+DTC ?= $(objtree)/scripts/dtc/dtc
CHECK = sparse
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
@@ -2070,29 +2064,9 @@ endif
endif
-# Check dtc and pylibfdt, if DTC is provided, else build them
PHONY += scripts_dtc
scripts_dtc: scripts_basic
- $(Q)if test "$(DTC)" = "$(DTC_INTREE)"; then \
- $(MAKE) $(build)=scripts/dtc; \
- else \
- if ! $(DTC) -v >/dev/null; then \
- echo '*** Failed to check dtc version: $(DTC)'; \
- false; \
- else \
- if test "$(call dtc-version)" -lt $(DTC_MIN_VERSION); then \
- echo '*** Your dtc is too old, please upgrade to dtc $(DTC_MIN_VERSION) or newer'; \
- false; \
- else \
- if [ -n "$(CONFIG_PYLIBFDT)" ]; then \
- if ! echo "import libfdt" | $(PYTHON3) 2>/dev/null; then \
- echo '*** pylibfdt does not seem to be available with $(PYTHON3)'; \
- false; \
- fi; \
- fi; \
- fi; \
- fi; \
- fi
+ $(Q)$(MAKE) $(build)=scripts/dtc
# ---------------------------------------------------------------------------
quiet_cmd_cpp_lds = LDS $@
--- a/doc/build/gcc.rst
+++ b/doc/build/gcc.rst
@@ -131,27 +131,6 @@ Further important build parameters are
* O=<dir> - generate all output files in directory <dir>, including .config
* V=1 - verbose build
-Devicetree compiler
-~~~~~~~~~~~~~~~~~~~
-
-Boards that use `CONFIG_OF_CONTROL` (i.e. almost all of them) need the
-devicetree compiler (dtc). Those with `CONFIG_PYLIBFDT` need pylibfdt, a Python
-library for accessing devicetree data. Suitable versions of these are included
-in the U-Boot tree in `scripts/dtc` and built automatically as needed.
-
-To use the system versions of these, use the DTC parameter, for example
-
-.. code-block:: bash
-
- DTC=/usr/bin/dtc make
-
-In this case, dtc and pylibfdt are not built. The build checks that the version
-of dtc is new enough. It also makes sure that pylibfdt is present, if needed
-(see `scripts_dtc` in the Makefile).
-
-Note that the :doc:`tools` are always built with the included version of libfdt
-so it is not possible to build U-Boot tools with a system libfdt, at present.
-
Other build targets
~~~~~~~~~~~~~~~~~~~
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -5,6 +5,9 @@
config SUPPORT_OF_CONTROL
bool
+config DTC
+ bool
+
config PYLIBFDT
bool
@@ -21,6 +24,7 @@ menu "Device Tree Control"
config OF_CONTROL
bool "Run-time configuration via Device Tree"
+ select DTC
select OF_LIBFDT if !OF_PLATDATA
select OF_REAL if !OF_PLATDATA
help
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -10,3 +10,4 @@ always := $(hostprogs-y)
# Let clean descend into subdirs
subdir- += basic kconfig dtc
+subdir-$(CONFIG_DTC) += dtc
--- a/scripts/dtc-version.sh
+++ b/scripts/dtc-version.sh
@@ -10,16 +10,11 @@
dtc="$*"
if [ ${#dtc} -eq 0 ]; then
- echo "Error: No dtc command specified"
+ echo "Error: No dtc command specified."
printf "Usage:\n\t$0 <dtc-command>\n"
exit 1
fi
-if ! which $dtc >/dev/null ; then
- echo "Error: Cannot find dtc: $dtc"
- exit 1
-fi
-
MAJOR=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 1)
MINOR=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 2)
PATCH=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 3 | cut -d - -f 1)