Thread (12 messages) 12 messages, 4 authors, 2022-02-04

Re: [PATCH 1/3] arm64: dts: meson-gx: add ATF BL32 reserved-memory region

From: Vyacheslav <hidden>
Date: 2022-01-26 05:35:10
Also in: linux-amlogic, linux-devicetree, lkml

Hi!

26.01.2022 07:49, Christian Hewitt wrote:
quoted hunk ↗ jump to hunk
Add an additional reserved memory region for the BL32 trusted firmware
present in many devices that boot from Amlogic vendor u-boot.

Suggested-by: Mateusz Krzak <redacted>
Signed-off-by: Christian Hewitt <redacted>
---
  arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 6 ++++++
  1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 6b457b2c30a4..aa14ea017a61 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -49,6 +49,12 @@
  			no-map;
  		};
  
+		/* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+		secmon_reserved_bl32: secmon@5300000 {
+			reg = <0x0 0x05300000 0x0 0x2000000>;
+			no-map;
+		};
+
How do I check if we need a similar patch for axg boards?

  		linux,cma {
  			compatible = "shared-dma-pool";
  			reusable;

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