meta-arm/meta-arm-bsp/recipes-kernel/linux/files/juno/0003-arm64-dts-fvp-Add-information-about-L1-and-L2-caches.patch

From 22e740d069e14875a64864bf86e0826a96560b44 Mon Sep 17 00:00:00 2001
From: Sudeep Holla <sudeep.holla@arm.com>
Date: Fri, 18 Nov 2022 15:10:17 +0000
Subject: [PATCH] arm64: dts: fvp: Add information about L1 and L2 caches

Add the information about L1 and L2 caches on FVP RevC platform.
Though the cache size is configurable through the model parameters,
having default values in the device tree helps to exercise and debug
any code utilising the cache information without the need of real
hardware.

Link: https://lore.kernel.org/r/20221118151017.704716-1-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Signed-off-by: Jon Mason <jon.mason@arm.com>
Upstream-Status: Backport
---
 arch/arm64/boot/dts/arm/fvp-base-revc.dts | 73 +++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
index 5f6f30c801a7..60472d65a355 100644
--- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts
+++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
@@ -47,48 +47,121 @@ cpu0: cpu@0 {
 			compatible = "arm,armv8";
 			reg = <0x0 0x000>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C0_L2>;
 		};
 		cpu1: cpu@100 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x100>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C0_L2>;
 		};
 		cpu2: cpu@200 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x200>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C0_L2>;
 		};
 		cpu3: cpu@300 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x300>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C0_L2>;
 		};
 		cpu4: cpu@10000 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x10000>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C1_L2>;
 		};
 		cpu5: cpu@10100 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x10100>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C1_L2>;
 		};
 		cpu6: cpu@10200 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x10200>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C1_L2>;
 		};
 		cpu7: cpu@10300 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x10300>;
 			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&C1_L2>;
+		};
+		C0_L2: l2-cache0 {
+			compatible = "cache";
+			cache-size = <0x80000>;
+			cache-line-size = <64>;
+			cache-sets = <512>;
+			cache-level = <2>;
+			cache-unified;
+		};
+
+		C1_L2: l2-cache1 {
+			compatible = "cache";
+			cache-size = <0x80000>;
+			cache-line-size = <64>;
+			cache-sets = <512>;
+			cache-level = <2>;
+			cache-unified;
 		};
 	};