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-rw-r--r--scripts/Makefile.lib13
1 files changed, 12 insertions, 1 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 16bbc277a9..1ca84195c9 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -635,8 +635,19 @@ else
fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)
endif
endif
+
+# This rule produces the .dtb for an SPL build.
+#
+# The first fdtgrep keeps nodes with the above properties (with -u ensuring that
+# the properties are implied in all parents of a matching node). The root node
+# is always included, along with /chosen and /config nodes. Referenced aliases
+# (i.e. properties in /aliases which point to an incldued node) are also
+# included.
+#
+# The second fdtgrep removes all bootph properties along with unused strings
+# and any properties in CONFIG_OF_SPL_REMOVE_PROPS
quiet_cmd_fdtgrep = FDTGREP $@
- cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
+ cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \
-n /chosen -n /config -O dtb | \
$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
-P bootph-all -P bootph-pre-ram -P bootph-pre-sram \