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Justin Hibbits
1ae2586676
This works on older arm64 platforms, but may not work with arm64 devices using GICv3, due to a quirk in the GICv3, where some registers are write-once. Most of the kexec reboot work on arm64 can be done entirely in C code, by disabling the MMU, as the kernel is carved out of the vm_phys_segs array, so cannot be overwritten. Reviewed by: andrew Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D51621
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/*-
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* Copyright (c) 2014 Andrew Turner <[email protected]>
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Andrew Turner under sponsorship from
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* the FreeBSD Foundation.
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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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#ifndef _MACHINE_SMP_H_
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#define _MACHINE_SMP_H_
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#include <machine/pcb.h>
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enum {
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IPI_AST,
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IPI_PREEMPT,
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IPI_RENDEZVOUS,
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IPI_STOP,
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IPI_STOP_HARD,
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IPI_HARDCLOCK,
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IPI_OFF,
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INTR_IPI_COUNT,
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};
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void ipi_all_but_self(u_int ipi);
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void ipi_cpu(int cpu, u_int ipi);
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void ipi_selected(cpuset_t cpus, u_int ipi);
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#endif /* !_MACHINE_SMP_H_ */
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