u-boot: Simplify boot script

A patch is backported to check if the firmware loaded a device tree blob
into memory and set the fdt_addr variable if it is found. The U-Boot
script will then read the command line arguments generated by the
firmware from the device tree and boot the kernel with the command
line arguments and the loaded device tree.

This allows things like MAC address, board revision and serial number
to be correctly configured and options in config.txt to be used.

An additional patch is backported and further changes are made to support
this.

Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Paul Barker <paul@paulbarker.me.uk>

1 files changed, 25 insertions, 0 deletions

diff --git a/recipes-bsp/u-boot/files/0003-Include-lowlevel_init.o-for-rpi2.patch b/recipes-bsp/u-boot/files/0003-Include-lowlevel_init.o-for-rpi2.patch
new file mode 100644
index 0000000..ce0273f
--- /dev/null
+++ b/recipes-bsp/u-boot/files/0003-Include-lowlevel_init.o-for-rpi2.patch
@@ -0,0 +1,25 @@
+From 1eb01436bc57ad32519a4567a1c9ec82d52d60a1 Mon Sep 17 00:00:00 2001
+From: Paul Barker <paul@paulbarker.me.uk>
+Date: Tue, 29 Nov 2016 19:47:49 +0000
+Subject: [PATCH] Include lowlevel_init.o for rpi2
+
+Signed-off-by: Paul Barker <paul@paulbarker.me.uk>
+Upstream-status: Inappropriate
+    (not needed upstream as rpi_2 board directory is removed in latest
+    version)
+---
+ board/raspberrypi/rpi_2/Makefile | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/board/raspberrypi/rpi_2/Makefile b/board/raspberrypi/rpi_2/Makefile
+index d82cd21..9f865c5 100644
+--- a/board/raspberrypi/rpi_2/Makefile
++++ b/board/raspberrypi/rpi_2/Makefile
+@@ -5,3 +5,4 @@
+ #
+ 
+ obj-y  := ../rpi/rpi.o
++obj-y  += ../rpi/lowlevel_init.o
+-- 
+2.1.4
+