[PATCH v3 09/10] arm: dts: k3-am64x-binman: Configure firewall for ATF/OPTEE

Suhaas Joshi s-joshi at ti.com
Tue Jan 27 09:16:51 CET 2026


Add firewall configurations to protect ATF and OP-TEE memory regions
from non-secure reads and writes in AM64x.

Signed-off-by: Suhaas Joshi <s-joshi at ti.com>
---
 arch/arm/dts/k3-am64x-binman.dtsi | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/dts/k3-am64x-binman.dtsi b/arch/arm/dts/k3-am64x-binman.dtsi
index 32e47a3f688..f3c7f2c939d 100644
--- a/arch/arm/dts/k3-am64x-binman.dtsi
+++ b/arch/arm/dts/k3-am64x-binman.dtsi
@@ -139,6 +139,37 @@
 			#address-cells = <1>;
 
 			images {
+				atf {
+					ti-secure {
+						auth-in-place = <0xa02>;
+
+						firewall-24-5 {
+							insert-template = <&firewall_armv8_atf_fg>;
+							id = <24>;
+							region = <5>;
+						};
+					};
+				};
+
+				tee {
+					ti-secure {
+						auth-in-place = <0xa02>;
+
+						firewall-1-0 {
+							insert-template = <&firewall_bg_3>;
+							id = <1>;
+							region = <0>;
+						};
+
+
+						firewall-1-1 {
+							insert-template = <&firewall_armv8_optee_fg>;
+							id = <1>;
+							region = <1>;
+						};
+					};
+				};
+
 				dm {
 					blob-ext {
 						filename = "/dev/null";
-- 
2.34.1



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