[U-Boot] [PATCH] AM335X: Set fdt_high for AM335X devices to enable booting with Device Tree

[Vaibhav Hiremath]

For AM335X boards, such as the EVM and Bone Linux kernel fails to
locate the device tree blob on boot. The reason being is that
u-boot is copying the DT blob to the upper part of RAM when booting
the kernel and the kernel is unable to access the blob.
By setting the fdt_high variable to 0xffffffff (to prevent the copy)
the kernel is able to locate the DT blob and boot.

This patch is tested on BeagleBone platform.

Signed-off-by: Vaibhav Hiremath <hvaibhav at ti.com>
Cc: Tom Rini <trini at ti.com>
---
 include/configs/am335x_evm.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index a3752bc..1af9b97 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -49,6 +49,7 @@
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"loadaddr=0x80200000\0" \
 	"fdtaddr=0x80F80000\0" \
+	"fdt_high=0xffffffff\0" \
 	"rdaddr=0x81000000\0" \
 	"bootfile=/boot/uImage\0" \
 	"console=ttyO0,115200n8\0" \
-- 
1.7.0.4