[PATCH RFC v3 35/35] HACK! arm64: dts: Add fake tag storage to fvp-base-revc.dts

Alexandru Elisei
2024-01-25T16:49:03Z

Faking a tag storage region for FVP is useful for testing.

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---

Changes since rfc v2:

* New patch, not intended to be merged.

arch/arm64/boot/dts/arm/fvp-base-revc.dts | 42 +++++++++++++++++++++--
1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
index 60472d65a355..e9f44420cb62 100644
--- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts
+++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts
@@ -165,10 +165,30 @@ C1_L2: l2-cache1 {
};
};

- memory@80000000 {
+ memory0: memory@80000000 {
device_type = "memory";
- reg = <0x00000000 0x80000000 0 0x80000000>,
- <0x00000008 0x80000000 0 0x80000000>;
+ reg = <0x00 0x80000000 0x00 0x80000000>;
+ numa-node-id = <0x00>;
+ };
+
+ /* tags0 */
+ tags_memory0: memory@8f8000000 {
+ device_type = "memory";
+ reg = <0x08 0xf8000000 0x00 0x4000000>;
+ numa-node-id = <0x00>;
+ };
+
+ memory1: memory@880000000 {
+ device_type = "memory";
+ reg = <0x08 0x80000000 0x00 0x78000000>;
+ numa-node-id = <0x01>;
+ };
+
+ /* tags1 */
+ tags_memory1: memory@8fc00000 {
+ device_type = "memory";
+ reg = <0x08 0xfc000000 0x00 0x3c00000>;
+ numa-node-id = <0x01>;
};

reserved-memory {
@@ -183,6 +203,22 @@ vram: vram@18000000 {
reg = <0x00000000 0x18000000 0 0x00800000>;
no-map;
};
+
+ tags0: tag-storage@8f8000000 {
+ compatible = "arm,mte-tag-storage";
+ reg = <0x08 0xf8000000 0x00 0x4000000>;
+ block-size = <0x1000>;
+ tagged-memory = <&memory0>;
+ reusable;
+ };
+
+ tags1: tag-storage@8fc00000 {
+ compatible = "arm,mte-tag-storage";
+ reg = <0x08 0xfc000000 0x00 0x3c00000>;
+ block-size = <0x1000>;
+ tagged-memory = <&memory1>;
+ reusable;
+ };
};

gic: interrupt-controller@2f000000 {
--
2.43.0