[PATCH] display5: Stop disabling device tree relocation

[PATCH] display5: 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/display5.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/configs/display5.h b/include/configs/display5.h
index 19d71d6066f8..c311b35bb978 100644
--- a/include/configs/display5.h
+++ b/include/configs/display5.h
@@ -175,7 +175,6 @@
 	"fdtaddr=0x12800000\0" \
 	"console=ttymxc4,115200 quiet cma=256M\0" \
 	"fdtfile=imx6q-display5.dtb\0" \
-	"fdt_high=0xffffffff\0" \
 	"initrd_high=0xffffffff\0" \
 	"kernel_file=fitImage\0" \
 	"fitImg_fw_sz=0x2200\0" \
-- 
2.43.0

Re: [PATCH] display5: Stop disabling device tree relocation

[Łukasz Majewski]

On Tue, 18 Nov 2025 12:03:56 -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/display5.h | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/include/configs/display5.h b/include/configs/display5.h
> index 19d71d6066f8..c311b35bb978 100644
> --- a/include/configs/display5.h
> +++ b/include/configs/display5.h
> @@ -175,7 +175,6 @@
>  	"fdtaddr=0x12800000\0" \
>  	"console=ttymxc4,115200 quiet cma=256M\0" \
>  	"fdtfile=imx6q-display5.dtb\0" \
> -	"fdt_high=0xffffffff\0" \
>  	"initrd_high=0xffffffff\0" \
>  	"kernel_file=fitImage\0" \
>  	"fitImg_fw_sz=0x2200\0" \

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

-- 
Best regards,

Lukasz Majewski

--
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Phone: +49 821 45592596
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