@@ -367,5 +367,64 @@ clint@2000000 {
reg = <0x00 0x2000000 0x00 0x10000>;
compatible = "sifive,clint0\0riscv,clint0";
};
+
+ cluster0_l2: controller@4820000 {
+ compatible = "foobar,cache-controller";
+ reg = <0x0 0x4820000 0x0 0x1000>; /* 4KB at 0x04820000 */
+ cache-unified;
+ cache-line-size = <64>;
+ cache-level = <2>;
+ cache-sets = <1000>;
+ cache-size = <768000>; /* 750 KiB */
+ next-level-cache = <&shared_llc>;
+ riscv,cbqri-rcid = <64>;
+ riscv,cbqri-mcid = <256>;
+ };
+
+ cluster1_l2: controller@4821000 {
+ compatible = "foobar,cache-controller";
+ reg = <0x0 0x4821000 0x0 0x1000>; /* 4KB at 0x04821000 */
+ cache-unified;
+ cache-line-size = <64>;
+ cache-level = <2>;
+ cache-sets = <1000>;
+ cache-size = <768000>; /* 750 KiB */
+ next-level-cache = <&shared_llc>;
+ riscv,cbqri-rcid = <64>;
+ riscv,cbqri-mcid = <256>;
+ };
+
+ shared_llc: controller@482b000 {
+ compatible = "foobar,cache-controller";
+ reg = <0x0 0x482b000 0x0 0x1000>; /* 4KB at 0x0482B000 */
+ cache-unified;
+ cache-line-size = <64>;
+ cache-level = <3>;
+ cache-sets = <4096>;
+ cache-size = <3145728>; /* 3 MiB */
+ riscv,cbqri-rcid = <64>;
+ riscv,cbqri-mcid = <256>;
+ };
+
+ mem0: controller@4828000 {
+ compatible = "foobar,memory-controller";
+ reg = <0x0 0x4828000 0x0 0x1000>; /* 4KB at 0x04828000 */
+ riscv,cbqri-rcid = <64>;
+ riscv,cbqri-mcid = <256>;
+ };
+
+ mem1: controller@4829000 {
+ compatible = "foobar,memory-controller";
+ reg = <0x0 0x4829000 0x0 0x1000>; /* 4KB at 0x04829000 */
+ riscv,cbqri-rcid = <64>;
+ riscv,cbqri-mcid = <256>;
+ };
+
+ mem2: controller@482a000 {
+ compatible = "foobar,memory-controller";
+ reg = <0x0 0x482a000 0x0 0x1000>; /* 4KB at 0x0482A000 */
+ riscv,cbqri-rcid = <64>;
+ riscv,cbqri-mcid = <256>;
+ };
};
};
Add nodes to for CBQRI-capable cache and memory controllers. This is necessary as the qemu branch riscv-cbqri-rfc (based on v8.0.0-rc4) does not yet support generating a dtb with the nodes and properties needed for CBQRI controllers. Thus, an external dtb (qemu-virt-cbqri.dtb) built by Linux is used when invoking qemu-system-riscv64: qemu-system-riscv64 \ -M virt \ -nographic \ -smp 8 \ -bios output/images/fw_jump.elf \ -kernel ${LINUX}/arch/riscv/boot/Image \ -dtb ${LINUX}/arch/riscv/boot/dts/qemu/qemu-virt-cbqri.dtb \ -append "root=/dev/vda ro" \ -drive file=output/images/rootfs.ext2,format=raw,id=hd0 \ -device virtio-blk-device,drive=hd0 \ Link: https://gitlab.baylibre.com/baylibre/qemu/-/tree/riscv-cbqri-rfc Co-developed-by: Adrien Ricciardi <aricciardi@baylibre.com> Signed-off-by: Adrien Ricciardi <aricciardi@baylibre.com> Signed-off-by: Drew Fustini <dfustini@baylibre.com> --- arch/riscv/boot/dts/qemu/qemu-virt-cbqri.dts | 59 ++++++++++++++++++++ 1 file changed, 59 insertions(+)