[PATCH v2] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A

[PATCH v2] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A

[Kathiravan Thirumoorthy]

From: Vignesh Viswanathan <quic_viswanat@quicinc.com>

IPQ5424 supports both TZ and TF-A as secure software options and various
DDR sizes. In most cases, TF-A or TZ is loaded at the same memory
location, but in the 256MB DDR configuration TF-A is loaded at a different
region.

So, add the reserved memory node for TF-A and keep it disabled by default.
During bootup, U-Boot will detect which secure software is running and
enable or disable the node accordingly.

Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
---
- Rebased on next-20250812
- Picked up R-b tag
- Link to v1:
  https://lore.kernel.org/linux-arm-msm/20250624-atf-reserved-mem-v1-1-43b1940e2853@oss.qualcomm.com/
---
 arch/arm64/boot/dts/qcom/ipq5424.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
index 2eea8a078595103ca2d3912f41e3594820b52771..e31e328bdf0e9aaaec3019e5a7bd71c7126e5fa8 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
@@ -163,6 +163,12 @@ smem@8a800000 {
 
 			hwlocks = <&tcsr_mutex 3>;
 		};
+
+		tfa@8a832000 {
+			reg = <0x0 0x8a832000 0x0 0x7d000>;
+			no-map;
+			status = "disabled";
+		};
 	};
 
 	soc@0 {

---
base-commit: 2674d1eadaa2fd3a918dfcdb6d0bb49efe8a8bb9
change-id: 20250812-atf-reserved-mem-bf388e366f75

Best regards,
-- 
Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>

Re: [PATCH v2] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A

[Kathiravan Thirumoorthy]

On 8/12/2025 10:22 AM, Kathiravan Thirumoorthy wrote:
> From: Vignesh Viswanathan <quic_viswanat@quicinc.com>
>
> IPQ5424 supports both TZ and TF-A as secure software options and various
> DDR sizes. In most cases, TF-A or TZ is loaded at the same memory
> location, but in the 256MB DDR configuration TF-A is loaded at a different
> region.
>
> So, add the reserved memory node for TF-A and keep it disabled by default.
> During bootup, U-Boot will detect which secure software is running and
> enable or disable the node accordingly.


Bjorn, is this change still in your review queue? do you plan to take 
this patch for v6.18 or any suggestions on this?


>
> Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
> ---
> - Rebased on next-20250812
> - Picked up R-b tag
> - Link to v1:
>    https://lore.kernel.org/linux-arm-msm/20250624-atf-reserved-mem-v1-1-43b1940e2853@oss.qualcomm.com/
> ---
>   arch/arm64/boot/dts/qcom/ipq5424.dtsi | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
> index 2eea8a078595103ca2d3912f41e3594820b52771..e31e328bdf0e9aaaec3019e5a7bd71c7126e5fa8 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
> @@ -163,6 +163,12 @@ smem@8a800000 {
>   
>   			hwlocks = <&tcsr_mutex 3>;
>   		};
> +
> +		tfa@8a832000 {
> +			reg = <0x0 0x8a832000 0x0 0x7d000>;
> +			no-map;
> +			status = "disabled";
> +		};
>   	};
>   
>   	soc@0 {
>
> ---
> base-commit: 2674d1eadaa2fd3a918dfcdb6d0bb49efe8a8bb9
> change-id: 20250812-atf-reserved-mem-bf388e366f75
>
> Best regards,

Re: [PATCH v2] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A

[Bjorn Andersson]

On Tue, 12 Aug 2025 10:22:12 +0530, Kathiravan Thirumoorthy wrote:
> IPQ5424 supports both TZ and TF-A as secure software options and various
> DDR sizes. In most cases, TF-A or TZ is loaded at the same memory
> location, but in the 256MB DDR configuration TF-A is loaded at a different
> region.
> 
> So, add the reserved memory node for TF-A and keep it disabled by default.
> During bootup, U-Boot will detect which secure software is running and
> enable or disable the node accordingly.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A
      commit: 8517204c982b1b36db766099a38cf752258dcd06

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>