From b3bb498ff23f5bcaa95614e0f8c9176690af8acb Mon Sep 17 00:00:00 2001 From: Frank Wunderlich Date: Tue, 17 Dec 2024 10:12:15 +0100 Subject: [PATCH 04/32] arm64: dts: mediatek: mt7988: Add reserved memory Add memory range handled by ATF to not be touched by linux kernel. ATF is SoC specific and not board-specific so add it to mt7988.dtsi. Signed-off-by: Frank Wunderlich Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20241217091238.16032-2-linux@fw-web.de Signed-off-by: AngeloGioacchino Del Regno --- arch/arm64/boot/dts/mediatek/mt7988a.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi @@ -62,6 +62,18 @@ method = "smc"; }; + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + /* 320 KiB reserved for ARM Trusted Firmware (BL31 and BL32) */ + secmon@43000000 { + reg = <0 0x43000000 0 0x50000>; + no-map; + }; + }; + soc { compatible = "simple-bus"; ranges;