arm64: dts: meson-g12: add ATF BL32 reserved-memory region

BugLink: https://bugs.launchpad.net/bugs/1963890
[ Upstream commit 08982a1b3aa2611c9c711d24825c9002d28536f4 ]

Add an additional reserved memory region for the BL32 trusted firmware
present in many devices that boot from Amlogic vendor u-boot.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220126044954.19069-3-christianshewitt@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
index 428449d98c0ae2f501897baf8a88bb2e4adef8ae..a3a1ea0f2134017c280956beb72c982d1212cb86 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
@@ -107,6 +107,12 @@
                        no-map;
                };
 
+               /* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+               secmon_reserved_bl32: secmon@5300000 {
+                       reg = <0x0 0x05300000 0x0 0x2000000>;
+                       no-map;
+               };
+
                linux,cma {
                        compatible = "shared-dma-pool";
                        reusable;