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mediatek: dts: increase mt7986 ATF reserved memory to 256 kiB

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The latest Mediatek open-source Trusted Firmware-A project has
reserved 256 KiB for BL2 and BL31.

Link: https://lore.kernel.org/all/OSBPR01MB16701BDF64C43EF07390C830BC29A@OSBPR01MB1670.jpnprd01.prod.outlook.com/
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/19741
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Shiji Yang 2025-08-10 20:15:12 +08:00 • committed by Hauke Mehrtens
parent 5fc5b0c18e
commit 2958eeea3b
1 changed files with 29 additions and 0 deletions
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29
target/linux/mediatek/patches-6.12/199-arm64-dts-mediatek-mt7986-increase-ATF-reserved-memo.patch Normal file
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@ -0,0 +1,29 @@
From 236317dd4e55512933dcdaec3d0b4a0824f5e5bd Mon Sep 17 00:00:00 2001
From: Shiji Yang <yangshiji66@outlook.com>
Date: Sun, 10 Aug 2025 18:11:01 +0800
Subject: [PATCH] arm64: dts: mediatek: mt7986: increase ATF reserved memory to
256 kiB
The latest Mediatek open-source Trusted Firmware-A project has
reserved 256 KiB for BL2 and BL31. It is better to increase the
reserved memory region in the Linux kernel to protect the data.
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---
arch/arm64/boot/dts/mediatek/mt7986a.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -76,9 +76,9 @@
record-size = <0x1000>;
};
- /* 192 KiB reserved for ARM Trusted Firmware (BL31) */
+ /* 256 KiB reserved for ARM Trusted Firmware (BL31 + BL32) */
secmon_reserved: secmon@43000000 {
- reg = <0 0x43000000 0 0x30000>;
+ reg = <0 0x43000000 0 0x40000>;
no-map;
};