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mediatek: mt7981: add reserved memory to support pstore

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Add reserved memory for pstore/ramoops to device tree used by Linux
as well as U-Boot.

Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3eb354f999)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Alexander Couzens 2023-03-19 19:00:51 +01:00 committed by Daniel Golle
parent 7f0e1373f4
commit 5d0d04e238
2 changed files with 45 additions and 0 deletions
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38
package/boot/uboot-mediatek/patches/052-mt7981-enable-pstore.patch Normal file
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@ -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>;

7
target/linux/mediatek/files-5.15/arch/arm64/boot/dts/mediatek/mt7981.dtsi
View File

@ -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>;