1/*- 2 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 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. 8 * 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). 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 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. 21 * 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 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD: stable/11/sys/riscv/include/cpu.h 340270 2018-11-08 22:42:55Z jhb $ 35 */ 36 37#ifndef _MACHINE_CPU_H_ 38#define _MACHINE_CPU_H_ 39 40#include <machine/atomic.h> 41#include <machine/frame.h> 42 43#define TRAPF_PC(tfp) ((tfp)->tf_ra) 44#define TRAPF_USERMODE(tfp) (((tfp)->tf_sepc & (1ul << 63)) == 0) 45 46#define cpu_getstack(td) ((td)->td_frame->tf_sp) 47#define cpu_setstack(td, sp) ((td)->td_frame->tf_sp = (sp)) 48#define cpu_spinwait() /* nothing */ 49#define cpu_lock_delay() DELAY(1) 50 51#ifdef _KERNEL 52 53/* 54 * 0x0000 CPU ID unimplemented 55 * 0x0001 UC Berkeley Rocket repo 56 * 0x0002��0x7FFE Reserved for open-source repos 57 * 0x7FFF Reserved for extension 58 * 0x8000 Reserved for anonymous source 59 * 0x8001��0xFFFE Reserved for proprietary implementations 60 * 0xFFFF Reserved for extension 61 */ 62 63#define CPU_IMPL_SHIFT 0 64#define CPU_IMPL_MASK (0xffff << CPU_IMPL_SHIFT) 65#define CPU_IMPL(mimpid) ((mimpid & CPU_IMPL_MASK) >> CPU_IMPL_SHIFT) 66#define CPU_IMPL_UNIMPLEMEN 0x0 67#define CPU_IMPL_UCB_ROCKET 0x1 68 69#define CPU_PART_SHIFT 62 70#define CPU_PART_MASK (0x3ul << CPU_PART_SHIFT) 71#define CPU_PART(mcpuid) ((mcpuid & CPU_PART_MASK) >> CPU_PART_SHIFT) 72#define CPU_PART_RV32I 0x0 73#define CPU_PART_RV32E 0x1 74#define CPU_PART_RV64I 0x2 75#define CPU_PART_RV128I 0x3 76 77extern char btext[]; 78extern char etext[]; 79 80void cpu_halt(void) __dead2; 81void cpu_reset(void) __dead2; 82void fork_trampoline(void); 83void identify_cpu(void); 84void swi_vm(void *v); 85 86static __inline uint64_t 87get_cyclecount(void) 88{ 89 90 /* TODO: This is bogus */ 91 return (1); 92} 93 94#endif 95 96#endif /* !_MACHINE_CPU_H_ */ 97