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authorPaul Mackerras <paulus@ozlabs.org>2021-06-18 06:44:16 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2021-06-21 14:15:26 +0300
commit151b88e8482167f6eb3117d82e4905efb5e72662 (patch)
treea1d2b26045199f9ba2335775da1775b52267c25c /arch/powerpc/boot
parent53d143fe08c24c2ce44ee329e41c2a6aad57ebb5 (diff)
downloadlinux-151b88e8482167f6eb3117d82e4905efb5e72662.tar.xz
powerpc: Add Microwatt device tree
Microwatt currently runs with MSR[HV] = 0, hence the usable-privilege properties don't have bit 2 (for HV support) set, and we need the /chosen/ibm,architecture-vec-5 property. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwWkPcXlGDSQ9Q3@thinks.paulus.ozlabs.org
Diffstat (limited to 'arch/powerpc/boot')
-rw-r--r--arch/powerpc/boot/dts/microwatt.dts98
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/powerpc/boot/dts/microwatt.dts b/arch/powerpc/boot/dts/microwatt.dts
new file mode 100644
index 000000000000..ac264ad3faaf
--- /dev/null
+++ b/arch/powerpc/boot/dts/microwatt.dts
@@ -0,0 +1,98 @@
+/dts-v1/;
+
+/ {
+ #size-cells = <0x02>;
+ #address-cells = <0x02>;
+ model-name = "microwatt";
+ compatible = "microwatt-soc";
+
+ reserved-memory {
+ #size-cells = <0x02>;
+ #address-cells = <0x02>;
+ ranges;
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x00000000 0x00000000 0x10000000>;
+ };
+
+ cpus {
+ #size-cells = <0x00>;
+ #address-cells = <0x01>;
+
+ ibm,powerpc-cpu-features {
+ display-name = "Microwatt";
+ isa = <3000>;
+ device_type = "cpu-features";
+ compatible = "ibm,powerpc-cpu-features";
+
+ mmu-radix {
+ isa = <3000>;
+ usable-privilege = <2>;
+ };
+
+ little-endian {
+ isa = <2050>;
+ usable-privilege = <3>;
+ hwcap-bit-nr = <1>;
+ };
+
+ cache-inhibited-large-page {
+ isa = <2040>;
+ usable-privilege = <2>;
+ };
+
+ fixed-point-v3 {
+ isa = <3000>;
+ usable-privilege = <3>;
+ };
+
+ no-execute {
+ isa = <2010>;
+ usable-privilege = <2>;
+ };
+
+ floating-point {
+ hwcap-bit-nr = <27>;
+ isa = <0>;
+ usable-privilege = <3>;
+ };
+ };
+
+ PowerPC,Microwatt@0 {
+ i-cache-sets = <2>;
+ ibm,dec-bits = <64>;
+ reservation-granule-size = <64>;
+ clock-frequency = <100000000>;
+ timebase-frequency = <100000000>;
+ i-tlb-sets = <1>;
+ ibm,ppc-interrupt-server#s = <0>;
+ i-cache-block-size = <64>;
+ d-cache-block-size = <64>;
+ d-cache-sets = <2>;
+ i-tlb-size = <64>;
+ cpu-version = <0x990000>;
+ status = "okay";
+ i-cache-size = <0x1000>;
+ ibm,processor-radix-AP-encodings = <0x0c 0xa0000010 0x20000015 0x4000001e>;
+ tlb-size = <0>;
+ tlb-sets = <0>;
+ device_type = "cpu";
+ d-tlb-size = <128>;
+ d-tlb-sets = <2>;
+ reg = <0>;
+ general-purpose;
+ 64-bit;
+ d-cache-size = <0x1000>;
+ ibm,chip-id = <0>;
+ };
+ };
+
+ chosen {
+ bootargs = "";
+ ibm,architecture-vec-5 = [19 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00
+ 00 00 00 00 00 00 00 00 40 00 40];
+ };
+
+};