diff mbox series

[v3,2/3] arm64: dts: ti: k3-am64-main: Indicate the memory reserved for DMSC-lite code and secure proxy communication buffer

Message ID 20210615155115.28902-3-a-govindraju@ti.com (mailing list archive)
State New, archived
Headers show
Series AM64: Update the locations of various elements in SRAM | expand

Commit Message

Aswath Govindraju June 15, 2021, 3:51 p.m. UTC 
The final 128KB in SRAM is reserved by default for DMSC-lite code and
secure proxy communication buffer. The memory region used for DMSC-lite
code can be optionally freed up by secure firmware API[1]. However, the
buffer for secure proxy communication is not configurable. This default
hardware configuration is unique for AM64.

Therefore, indicate the area reserved for DMSC-lite code and secure proxy
communication buffer in the oc_sram device tree node.

[1] - http://downloads.ti.com/tisci/esd/latest/6_topic_user_guides/security_handover.html#triggering-security-handover

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 693fe24e7f7a..6a883f4349cb 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -27,6 +27,14 @@ 
 		tfa-sram@0 {
 			reg = <0x0 0x1c000>;
 		};
+
+		dmsc-sram@1e0000 {
+			reg = <0x1e0000 0x1c000>;
+		};
+
+		sproxy-sram@1fc000 {
+			reg = <0x1fc000 0x4000>;
+		};
 	};
 
 	main_conf: syscon@43000000 {