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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
This commit is contained in:
Paul Mackerras 2021-06-18 13:44:16 +10:00 committed by Michael Ellerman
parent 53d143fe08
commit 151b88e848
1 changed files with 98 additions and 0 deletions
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98
arch/powerpc/boot/dts/microwatt.dts Normal file
View File

@ -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];
};
};