On 17/02/2024 20:02, Artur Weber wrote:
> The stock bootloader on the Samsung Galaxy Tab 3 8.0 provides an
> incorrect available memory range over ATAG_MEM. Limit the usable
> memory in the DTS to prevent it from doing so, without having to
> disable ATAG support.
>
> Signed-off-by: Artur Weber <aweber.kernel@xxxxxxxxx>
> ---
> arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
> index e5254e32aa8f..9bc05961577d 100644
> --- a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
> +++ b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
> @@ -45,6 +45,12 @@ chosen {
> /* Default S-BOOT bootloader loads initramfs here */
> linux,initrd-start = <0x42000000>;
> linux,initrd-end = <0x42800000>;
> +
> + /*
> + * Stock bootloader provides incorrect memory size in ATAG_MEM;
> + * override it here
> + */
> + linux,usable-memory-range = <0x40000000 0x3fc00000>;
Applied and dropped:
chosen: linux,usable-memory-range:0: [4611686019496935424] is too short
Does not look you tested the bindings.
Please observe that we have dedicated subsystem profile since a release:
https://www.kernel.org/doc/html/latest/process/maintainers.html#arm-samsung-s3c-s5p-and-exynos-arm-architectures
Best regards,
Krzysztof
