freebsd-src/sys/arm64/vmm/mmu.h
Andrew Turner 47e073941f Import the kernel parts of bhyve/arm64
To support virtual machines on arm64 add the vmm code. This is based on
earlier work by Mihai Carabas and Alexandru Elisei at University
Politehnica of Bucharest, with further work by myself and Mark Johnston.

All AArch64 CPUs should work, however only the GICv3 interrupt
controller is supported. There is initial support to allow the GICv2
to be supported in the future. Only pure Armv8.0 virtualisation is
supported, the Virtualization Host Extensions are not currently used.

With a separate userspace patch and U-Boot port FreeBSD guests are able
to boot to multiuser mode, and the hypervisor can be tested with the
kvm unit tests. Linux partially boots, but hangs before entering
userspace. Other operating systems are untested.

Sponsored by:	Arm Ltd
Sponsored by:	Innovate UK
Sponsored by:	The FreeBSD Foundation
Sponsored by:	University Politehnica of Bucharest
Differential Revision:	https://reviews.freebsd.org/D37428
2024-02-21 18:55:32 +00:00

53 lines
1.9 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2017 Alexandru Elisei <alexandru.elisei@gmail.com>
*
* This software was developed by Alexandru Elisei under sponsorship
* from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _VMM_MMU_H_
#define _VMM_MMU_H_
#include <machine/machdep.h>
#include <machine/vmparam.h>
#include <machine/vmm.h>
#include "hyp.h"
extern char vmm_hyp_code;
extern char vmm_hyp_code_end;
extern char _vmm_start;
extern char _vmm_end;
bool vmmpmap_init(void);
void vmmpmap_fini(void);
uint64_t vmmpmap_to_ttbr0(void);
bool vmmpmap_enter(vm_offset_t, vm_size_t, vm_paddr_t, vm_prot_t);
void vmmpmap_remove(vm_offset_t, vm_size_t, bool);
#endif