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@xxxxxx> Reviewed-by: Suman Anna <s-anna@xxxxxx> --- arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi index e918afc2298e..27888ee6f039 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 0x20000>; }; + + dmsc-sram@1e0000 { + reg = <0x1e0000 0x1c000>; + }; + + sproxy-sram@1fc000 { + reg = <0x1fc000 0x4000>; + }; }; main_conf: syscon@43000000 { -- 2.17.1
