[PATCH AUTOSEL 5.4 06/17] arm64: dts: meson-gx: add ATF BL32 reserved-memory region

From: Sasha Levin
Date: Tue Feb 15 2022 - 10:36:16 EST


From: Christian Hewitt <christianshewitt@xxxxxxxxx>

[ Upstream commit 76577c9137456febb05b0e17d244113196a98968 ]

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 <kszaquitto@xxxxxxxxx>
Signed-off-by: Christian Hewitt <christianshewitt@xxxxxxxxx>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Reviewed-by: Kevin Hilman <khilman@xxxxxxxxxxxx>
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220126044954.19069-2-christianshewitt@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 ce230d6ac35cd..ad7bc0eec6682 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -41,6 +41,12 @@ secmon_reserved_alt: secmon@5000000 {
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;
--
2.34.1