[LEDE-DEV] [PATCH] bcm53xx: put kernel into TRX when building initramfs images

[Rafał Miłecki]

From: Rafał Miłecki <rafal at milecki.pl>

Many (most?) devices can't boot raw kernel using tftp and probably none
allows flashing it. It's way more usable to have TRX with kernel
containing initrams as such an image can be actually flashed.

Some devices may support tftp flash booting and it would be the best to
have both images generated for them. Unfortunately it's not possible
right now (only one initramfs image can be generated).

Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 target/linux/bcm53xx/image/Makefile | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/target/linux/bcm53xx/image/Makefile b/target/linux/bcm53xx/image/Makefile
index 660981ea1e..58ec84cae6 100644
--- a/target/linux/bcm53xx/image/Makefile
+++ b/target/linux/bcm53xx/image/Makefile
@@ -49,6 +49,14 @@ define Build/buffalo-wzr-header
 	mv $@.new $@
 endef
 
+define Build/trx
+	$(STAGING_DIR_HOST)/bin/trx \
+		-o $@.new \
+		-m 33554432 \
+		-f $@
+	mv $@.new $@
+endef
+
 define Build/trx-serial
 	$(STAGING_DIR_HOST)/bin/trx \
 		-o $@.new \
@@ -111,6 +119,7 @@ define Device/Default
   DEVICE_DTS := $(patsubst %.dtb,%,$(notdir $(wildcard $(if $(IB),$(KDIR),$(DTS_DIR))/*-$(1).dtb)))
   KERNEL := kernel-bin | append-dtb | lzma-d16
   KERNEL_DEPENDS = $$(wildcard $(DTS_DIR)/$$(DEVICE_DTS).dts)
+  KERNEL_INITRAMFS := kernel-bin | append-dtb | lzma-d16 | trx
   FILESYSTEMS := squashfs
   KERNEL_NAME := zImage
   IMAGE_NAME = $$(IMAGE_PREFIX)-$$(1).$$(2)
-- 
2.11.0