[PATCH] kp_imx53: Stop disabling device tree relocation

[PATCH] kp_imx53: Stop disabling device tree relocation

[Tom Rini]

Remove setting of fdt_high to ~0, which disables device tree relocation,
from the default environment. Doing so prevents U-Boot from correcting
problems such as having an unaligned device tree and leads to various
failure modes in the OS.

Signed-off-by: Tom Rini <trini@konsulko.com>
---
If there is some window of memory that must be used for where the device
tree is relocated to, bootm_low + bootm_size (or often just bootm_size)
or bootm_mapsize are the correct way do this. Please see
doc/usage/environment.rst for more details.

Cc: Lukasz Majewski <lukma@nabladev.com>
---
 include/configs/kp_imx53.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/configs/kp_imx53.h b/include/configs/kp_imx53.h
index 78c6c67ab99f..bb136b7e1290 100644
--- a/include/configs/kp_imx53.h
+++ b/include/configs/kp_imx53.h
@@ -18,7 +18,6 @@
 #define CFG_EXTRA_ENV_SETTINGS \
 	"console=ttymxc1,115200\0"	\
 	"fdt_addr=0x75000000\0"		\
-	"fdt_high=0xffffffff\0"		\
 	"scriptaddr=0x74000000\0"	\
 	"kernel_file=fitImage\0"\
 	"silent=1\0"\
-- 
2.43.0

Re: [PATCH] kp_imx53: Stop disabling device tree relocation

[Łukasz Majewski]

On Tue, 18 Nov 2025 12:04:00 -0600
Tom Rini <trini@konsulko.com> wrote:

> Remove setting of fdt_high to ~0, which disables device tree
> relocation, from the default environment. Doing so prevents U-Boot
> from correcting problems such as having an unaligned device tree and
> leads to various failure modes in the OS.
> 
> Signed-off-by: Tom Rini <trini@konsulko.com>
> ---
> If there is some window of memory that must be used for where the
> device tree is relocated to, bootm_low + bootm_size (or often just
> bootm_size) or bootm_mapsize are the correct way do this. Please see
> doc/usage/environment.rst for more details.
> 
> Cc: Lukasz Majewski <lukma@nabladev.com>
> ---
>  include/configs/kp_imx53.h | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/include/configs/kp_imx53.h b/include/configs/kp_imx53.h
> index 78c6c67ab99f..bb136b7e1290 100644
> --- a/include/configs/kp_imx53.h
> +++ b/include/configs/kp_imx53.h
> @@ -18,7 +18,6 @@
>  #define CFG_EXTRA_ENV_SETTINGS \
>  	"console=ttymxc1,115200\0"	\
>  	"fdt_addr=0x75000000\0"		\
> -	"fdt_high=0xffffffff\0"		\
>  	"scriptaddr=0x74000000\0"	\
>  	"kernel_file=fitImage\0"\
>  	"silent=1\0"\

Reviewed-by: Łukasz Majewski <lukma@nabladev.com>

-- 
Best regards,

Lukasz Majewski

--
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Phone: +49 821 45592596
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