linux-kernel - [PATCH AUTOSEL 5.16 12/34] arm64: dts: meson-gx: add ATF BL32 reserved-memory region

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Message-Id: <20220215152657.580200-12-sashal@kernel.org>
Date:   Tue, 15 Feb 2022 10:26:35 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Christian Hewitt <christianshewitt@...il.com>,
        Mateusz Krzak <kszaquitto@...il.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Sasha Levin <sashal@...nel.org>, robh+dt@...nel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.16 12/34] arm64: dts: meson-gx: add ATF BL32 reserved-memory region

From: Christian Hewitt <christianshewitt@...il.com>

[ 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@...il.com>
Signed-off-by: Christian Hewitt <christianshewitt@...il.com>
Reviewed-by: Neil Armstrong <narmstrong@...libre.com>
Reviewed-by: Kevin Hilman <khilman@...libre.com>
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
Link: https://lore.kernel.org/r/20220126044954.19069-2-christianshewitt@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 6b457b2c30a4b..aa14ea017a613 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -49,6 +49,12 @@ secmon_reserved_alt: secmon@...0000 {
 			no-map;
 		};
 
+		/* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+		secmon_reserved_bl32: secmon@...0000 {
+			reg = <0x0 0x05300000 0x0 0x2000000>;
+			no-map;
+		};
+
 		linux,cma {
 			compatible = "shared-dma-pool";
 			reusable;
-- 
2.34.1