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authorLuca Ceresoli <luca@lucaceresoli.net>2018-09-11 13:13:59 +0200
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-09-12 08:17:27 +0100
commit678fe8c66b19f141f6869859cf365aec037e89d9 (patch)
tree980b321d8270da7867342f5660908470ed8ff95c
parent5db09f7ad007d1def009a60d7d9bf9c13c0faa4e (diff)
downloadopenembedded-core-contrib-678fe8c66b19f141f6869859cf365aec037e89d9.tar.gz
devicetree.bbclass: don't pad DT overlays
By default the devicetree class adds padding to the generated .dtb files, which can be needed by the bootloader. However it also pads .dtbo files, which is not useful. Don't apply padding to the overlay devicetrees. To achieve this: * move "-p ${DT_PADDING_SIZE}" to a new variable, DTB_BFLAGS (B for "base") * add "-p 0" to DTC_OFLAGS to disable padding for overlays Cc: Nathan Rossi <nathan@nathanrossi.com> Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--meta/classes/devicetree.bbclass7
1 files changed, 5 insertions, 2 deletions
diff --git a/meta/classes/devicetree.bbclass b/meta/classes/devicetree.bbclass
index dbc83f2a1d..8fe5a5ed79 100644
--- a/meta/classes/devicetree.bbclass
+++ b/meta/classes/devicetree.bbclass
@@ -55,9 +55,10 @@ DT_RESERVED_MAP ??= "8"
DT_BOOT_CPU[doc] = "The boot cpu, defaults to 0"
DT_BOOT_CPU ??= "0"
-DTC_FLAGS ?= "-R ${DT_RESERVED_MAP} -p ${DT_PADDING_SIZE} -b ${DT_BOOT_CPU}"
+DTC_FLAGS ?= "-R ${DT_RESERVED_MAP} -b ${DT_BOOT_CPU}"
DTC_PPFLAGS ?= "-nostdinc -undef -D__DTS__ -x assembler-with-cpp"
-DTC_OFLAGS ?= "-@ -H epapr"
+DTC_BFLAGS ?= "-p ${DT_PADDING_SIZE}"
+DTC_OFLAGS ?= "-p 0 -@ -H epapr"
python () {
if d.getVar("KERNEL_INCLUDE"):
@@ -106,6 +107,8 @@ def devicetree_compile(dtspath, includes, d):
dtcargs = ["dtc"] + (d.getVar("DTC_FLAGS") or "").split()
if isoverlay:
dtcargs += (d.getVar("DTC_OFLAGS") or "").split()
+ else:
+ dtcargs += (d.getVar("DTC_BFLAGS") or "").split()
for i in includes:
dtcargs += ["-i", i]
dtcargs += ["-o", "{0}.{1}".format(dtname, "dtbo" if isoverlay else "dtb")]