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authorViresh Kumar <viresh.kumar@linaro.org>2021-01-29 12:54:06 +0530
committerRob Herring <robh@kernel.org>2021-02-04 09:00:04 -0600
commit0da6bcd9fcc021ff2d6cd7c8173f42dcdff6a00b (patch)
treece9c1117c3dd23c72f3aedf6ca6a4fc762d2c8b3
parent79edff12060fe7772af08607eff50c0e2486c5ba (diff)
scripts: dtc: Build fdtoverlay tool
We will start building overlays for platforms soon in the kernel and would need fdtoverlay going forward. Lets start building it. The fdtoverlay program applies one or more overlay dtb blobs to a base dtb blob. The kernel build system would later use fdtoverlay to generate the overlaid blobs based on platform specific configurations. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/4a201dea3ba11a00cab7e936dfc1140dac1a1ae3.1611904394.git.viresh.kumar@linaro.org
-rw-r--r--scripts/dtc/Makefile8
1 files changed, 7 insertions, 1 deletions
diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index 4852bf44e913..c8c21e0f2531 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -1,13 +1,19 @@
# SPDX-License-Identifier: GPL-2.0
# scripts/dtc makefile
-hostprogs-always-$(CONFIG_DTC) += dtc
+hostprogs-always-$(CONFIG_DTC) += dtc fdtoverlay
hostprogs-always-$(CHECK_DT_BINDING) += dtc
dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
srcpos.o checks.o util.o
dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
+# The upstream project builds libfdt as a separate library. We are choosing to
+# instead directly link the libfdt object files into fdtoverlay.
+libfdt-objs := fdt.o fdt_ro.o fdt_wip.o fdt_sw.o fdt_rw.o fdt_strerror.o fdt_empty_tree.o fdt_addresses.o fdt_overlay.o
+libfdt = $(addprefix libfdt/,$(libfdt-objs))
+fdtoverlay-objs := $(libfdt) fdtoverlay.o util.o
+
# Source files need to get at the userspace version of libfdt_env.h to compile
HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt