228b87bc31
A hypervisor, e.g. bhyve, will need to know what exception levelthe kernel was in when it started booting. If it was EL2 we can then enable said hypervisor. Store the boot exception level and allow the kernel to later query it. Obtained from: https://github.com/FreeBSD-UPB/freebsd (earlier version) Sponsored by: Innovate UK
80 lines
3.3 KiB
C
80 lines
3.3 KiB
C
/*-
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* Copyright (c) 2004 Olivier Houchard
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* Copyright (c) 2014 Andrew Turner
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* All rights reserved.
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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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/assym.h>
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#include <sys/pcpu.h>
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#include <sys/proc.h>
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#include <machine/frame.h>
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#include <machine/machdep.h>
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#include <machine/pcb.h>
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/* Sizeof arm64_bootparams, rounded to keep stack alignment */
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ASSYM(BOOTPARAMS_SIZE, roundup2(sizeof(struct arm64_bootparams),
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STACKALIGNBYTES + 1));
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ASSYM(BP_MODULEP, offsetof(struct arm64_bootparams, modulep));
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ASSYM(BP_KERN_L1PT, offsetof(struct arm64_bootparams, kern_l1pt));
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ASSYM(BP_KERN_DELTA, offsetof(struct arm64_bootparams, kern_delta));
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ASSYM(BP_KERN_STACK, offsetof(struct arm64_bootparams, kern_stack));
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ASSYM(BP_KERN_L0PT, offsetof(struct arm64_bootparams, kern_l0pt));
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ASSYM(BP_BOOT_EL, offsetof(struct arm64_bootparams, boot_el));
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ASSYM(TDF_ASTPENDING, TDF_ASTPENDING);
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ASSYM(TDF_NEEDRESCHED, TDF_NEEDRESCHED);
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ASSYM(PCPU_SIZE, sizeof(struct pcpu));
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ASSYM(PC_CURPCB, offsetof(struct pcpu, pc_curpcb));
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ASSYM(PC_CURTHREAD, offsetof(struct pcpu, pc_curthread));
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ASSYM(PC_SSBD, offsetof(struct pcpu, pc_ssbd));
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/* Size of pcb, rounded to keep stack alignment */
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ASSYM(PCB_SIZE, roundup2(sizeof(struct pcb), STACKALIGNBYTES + 1));
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ASSYM(PCB_SINGLE_STEP_SHIFT, PCB_SINGLE_STEP_SHIFT);
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ASSYM(PCB_REGS, offsetof(struct pcb, pcb_x));
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ASSYM(PCB_SP, offsetof(struct pcb, pcb_sp));
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ASSYM(PCB_TPIDRRO, offsetof(struct pcb, pcb_tpidrro_el0));
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ASSYM(PCB_ONFAULT, offsetof(struct pcb, pcb_onfault));
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ASSYM(PCB_FLAGS, offsetof(struct pcb, pcb_flags));
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ASSYM(SF_UC, offsetof(struct sigframe, sf_uc));
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ASSYM(TD_PROC, offsetof(struct thread, td_proc));
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ASSYM(TD_PCB, offsetof(struct thread, td_pcb));
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ASSYM(TD_FLAGS, offsetof(struct thread, td_flags));
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ASSYM(TD_FRAME, offsetof(struct thread, td_frame));
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ASSYM(TD_LOCK, offsetof(struct thread, td_lock));
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ASSYM(TF_SIZE, sizeof(struct trapframe));
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ASSYM(TF_SP, offsetof(struct trapframe, tf_sp));
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ASSYM(TF_ELR, offsetof(struct trapframe, tf_elr));
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ASSYM(TF_SPSR, offsetof(struct trapframe, tf_spsr));
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ASSYM(TF_X, offsetof(struct trapframe, tf_x));
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