From 3eb354f999a3687f9ae547899b0f5ec2b10185ab Mon Sep 17 00:00:00 2001 From: Alexander Couzens Date: Sun, 19 Mar 2023 19:00:51 +0100 Subject: [PATCH] mediatek: mt7981: add reserved memory to support pstore Add reserved memory for pstore/ramoops to device tree used by Linux as well as U-Boot. Signed-off-by: Alexander Couzens Signed-off-by: Daniel Golle --- .../patches/052-mt7981-enable-pstore.patch | 38 +++++++++++++++++++ .../arch/arm64/boot/dts/mediatek/mt7981.dtsi | 7 ++++ 2 files changed, 45 insertions(+) create mode 100644 package/boot/uboot-mediatek/patches/052-mt7981-enable-pstore.patch diff --git a/package/boot/uboot-mediatek/patches/052-mt7981-enable-pstore.patch b/package/boot/uboot-mediatek/patches/052-mt7981-enable-pstore.patch new file mode 100644 index 00000000000..9bfea8f7379 --- /dev/null +++ b/package/boot/uboot-mediatek/patches/052-mt7981-enable-pstore.patch @@ -0,0 +1,38 @@ +--- a/arch/arm/dts/mt7981.dtsi ++++ b/arch/arm/dts/mt7981.dtsi +@@ -32,6 +32,35 @@ + }; + }; + ++ psci { ++ compatible = "arm,psci-0.2"; ++ method = "smc"; ++ }; ++ ++ reserved-memory { ++ #address-cells = <2>; ++ #size-cells = <2>; ++ ranges; ++ ++ /* 64 KiB reserved for ramoops/pstore */ ++ ramoops@42ff0000 { ++ compatible = "ramoops"; ++ reg = <0 0x42ff0000 0 0x10000>; ++ record-size = <0x1000>; ++ }; ++ ++ /* 192 KiB reserved for ARM Trusted Firmware (BL31) */ ++ secmon_reserved: secmon@43000000 { ++ reg = <0 0x43000000 0 0x30000>; ++ no-map; ++ }; ++ ++ wmcpu_emi: wmcpu-reserved@4fc00000 { ++ no-map; ++ reg = <0 0x4fc00000 0 0x00100000>; ++ }; ++ }; ++ + gpt_clk: gpt_dummy20m { + compatible = "fixed-clock"; + clock-frequency = <13000000>; diff --git a/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi b/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi index 07a8c06979e..17038a24847 100644 --- a/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi +++ b/target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi @@ -164,6 +164,13 @@ #size-cells = <2>; ranges; + /* 64 KiB reserved for ramoops/pstore */ + ramoops@42ff0000 { + compatible = "ramoops"; + reg = <0 0x42ff0000 0 0x10000>; + record-size = <0x1000>; + }; + /* 192 KiB reserved for ARM Trusted Firmware (BL31) */ secmon_reserved: secmon@43000000 { reg = <0 0x43000000 0 0x30000>; -- 2.30.2