2 * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
5 * Portions of this software were developed by SRI International and the
6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
9 * Portions of this software were developed by the University of Cambridge
10 * Computer Laboratory as part of the CTSRD Project, with support from the
11 * UK Higher Education Innovation Fund (HEIF).
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
40 #include <sys/sysctl.h>
41 #include <sys/systm.h>
43 #include <machine/cpu.h>
44 #include <machine/cpufunc.h>
45 #include <machine/trap.h>
47 char machine[] = "riscv";
49 SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0,
55 const char *cpu_impl_name;
56 const char *cpu_part_name;
59 struct cpu_desc cpu_desc[MAXCPU];
63 const char *part_name;
65 #define CPU_PART_NONE { -1, "Unknown Processor" }
67 struct cpu_implementers {
69 const char *impl_name;
71 #define CPU_IMPLEMENTER_NONE { 0, "Unknown Implementer" }
76 static const struct cpu_parts cpu_parts_std[] = {
77 { CPU_PART_RV32, "RV32" },
78 { CPU_PART_RV64, "RV64" },
79 { CPU_PART_RV128, "RV128" },
86 const struct cpu_implementers cpu_implementers[] = {
87 { CPU_IMPL_UCB_ROCKET, "UC Berkeley Rocket" },
94 const struct cpu_parts *cpu_partsp;
104 /* TODO: can we get mimpid and misa somewhere ? */
108 cpu = PCPU_GET(cpuid);
110 impl_id = CPU_IMPL(mimpid);
111 for (i = 0; i < nitems(cpu_implementers); i++) {
112 if (impl_id == cpu_implementers[i].impl_id ||
113 cpu_implementers[i].impl_id == 0) {
114 cpu_desc[cpu].cpu_impl = impl_id;
115 cpu_desc[cpu].cpu_impl_name = cpu_implementers[i].impl_name;
116 cpu_partsp = cpu_parts_std;
121 part_id = CPU_PART(misa);
122 for (i = 0; &cpu_partsp[i] != NULL; i++) {
123 if (part_id == cpu_partsp[i].part_id ||
124 cpu_partsp[i].part_id == -1) {
125 cpu_desc[cpu].cpu_part_num = part_id;
126 cpu_desc[cpu].cpu_part_name = cpu_partsp[i].part_name;
131 /* Print details for boot CPU or if we want verbose output */
132 if (cpu == 0 || bootverbose) {
133 printf("CPU(%d): %s %s\n", cpu,
134 cpu_desc[cpu].cpu_impl_name,
135 cpu_desc[cpu].cpu_part_name);