5f8228b2f3
Machine privilege level was specially designed to use in vendor's firmware or bootloader. We have implemented operation in machine mode in FreeBSD as part of understanding RISC-V ISA, but it is time to remove it. We now use BBL (Berkeley Boot Loader) -- standard RISC-V firmware, which provides operation in machine mode for us. We now use standard SBI calls to machine mode, instead of handmade 'syscalls'. o Remove HTIF bus. HTIF bus is now legacy and no longer exists in RISC-V specification. HTIF code still exists in Spike simulator, but BBL do not provide raw interface to it. Memory disk is only choice for now to have multiuser booted in Spike, until Spike has implemented more devices (e.g. Virtio, etc). Sponsored by: DARPA, AFRL Sponsored by: HEIF5
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/*-
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* Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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* University of Cambridge Computer Laboratory under DARPA/AFRL contract
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* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Portions of this software were developed by the University of Cambridge
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* Computer Laboratory as part of the CTSRD Project, with support from the
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* UK Higher Education Innovation Fund (HEIF).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_SBI_H_
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#define _MACHINE_SBI_H_
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typedef struct {
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uint64_t base;
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uint64_t size;
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uint64_t node_id;
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} memory_block_info;
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uint64_t sbi_query_memory(uint64_t id, memory_block_info *p);
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uint64_t sbi_hart_id(void);
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uint64_t sbi_num_harts(void);
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uint64_t sbi_timebase(void);
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void sbi_set_timer(uint64_t stime_value);
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void sbi_send_ipi(uint64_t hart_id);
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uint64_t sbi_clear_ipi(void);
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void sbi_shutdown(void);
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void sbi_console_putchar(unsigned char ch);
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int sbi_console_getchar(void);
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void sbi_remote_sfence_vm(uint64_t hart_mask_ptr, uint64_t asid);
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void sbi_remote_sfence_vm_range(uint64_t hart_mask_ptr, uint64_t asid, uint64_t start, uint64_t size);
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void sbi_remote_fence_i(uint64_t hart_mask_ptr);
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uint64_t sbi_mask_interrupt(uint64_t which);
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uint64_t sbi_unmask_interrupt(uint64_t which);
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#endif /* !_MACHINE_SBI_H_ */
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