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AM335X: Set fdt_high for AM335X devices to enable booting with Device Tree

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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@ti.com>
Cc: Tom Rini <trini@ti.com>
This commit is contained in:
hvaibhav@ti.com 2012-09-18 09:26:05 +00:00 • committed by Tom Rini
parent 13526f7157
commit f170899f73
1 changed files with 1 additions and 0 deletions
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1
include/configs/am335x_evm.h
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@ -52,6 +52,7 @@
#define CONFIG_EXTRA_ENV_SETTINGS \
"loadaddr=0x80200000\0" \
"fdtaddr=0x80F80000\0" \
"fdt_high=0xffffffff\0" \
"rdaddr=0x81000000\0" \
"bootfile=/boot/uImage\0" \
"fdtfile=\0" \