1a9cdd373a
Add the PV/PVH entry point and the low level functions for PVH
early initialization.
Approved by: gibbs
Sponsored by: Citrix Systems R&D
amd64/amd64/genassym.c:
- Add __FreeBSD_version define to assym.s so it can be used for the
Xen notes.
amd64/amd64/locore.S:
- Make bootstack global so it can be used from Xen kernel entry
point.
amd64/amd64/xen-locore.S:
- Add Xen notes to the kernel.
- Add the Xen PV entry point, that is going to call hammer_time_xen.
amd64/include/asmacros.h:
- Add ELFNOTE macros.
i386/xen/xen_machdep.c:
- Define HYPERVISOR_start_info for the XEN i386 PV port, which is
going to be used in some shared code between PV and PVH.
x86/xen/hvm.c:
- Define HYPERVISOR_start_info for the PVH port.
x86/xen/pv.c:
- Introduce hammer_time_xen which is going to perform early setup for
Xen PVH:
- Setup shared Xen variables start_info, shared_info and
xen_store.
- Set guest type.
- Create initial page tables as FreeBSD expects to find them.
- Call into native init function (hammer_time).
xen/xen-os.h:
- Declare HYPERVISOR_start_info.
conf/files.amd64:
- Add amd64/amd64/locore.S and x86/xen/pv.c to the list of files.
90 lines
3.0 KiB
ArmAsm
90 lines
3.0 KiB
ArmAsm
/*-
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* Copyright (c) 2003 Peter Wemm <peter@FreeBSD.org>
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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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* $FreeBSD$
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*/
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#include <machine/asmacros.h>
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#include <machine/psl.h>
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#include <machine/pmap.h>
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#include <machine/specialreg.h>
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#include "assym.s"
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/*
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* Compiled KERNBASE location
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*/
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.globl kernbase,loc_PTmap,loc_PDmap,loc_PDPmap,loc_PML4map,loc_PML4pml4e,dmapbase,dmapend
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.set kernbase,KERNBASE
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.set loc_PTmap,addr_PTmap
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.set loc_PDmap,addr_PDmap
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.set loc_PDPmap,addr_PDPmap
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.set loc_PML4map,addr_PML4map
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.set loc_PML4pml4e,addr_PML4pml4e
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.set dmapbase,DMAP_MIN_ADDRESS
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.set dmapend,DMAP_MAX_ADDRESS
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.text
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/**********************************************************************
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*
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* This is where the loader trampoline start us, set the ball rolling...
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*
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* We are called with the stack looking like this:
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* 0(%rsp) = 32 bit return address (cannot be used)
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* 4(%rsp) = 32 bit modulep
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* 8(%rsp) = 32 bit kernend
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*
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* We are already in long mode, on a 64 bit %cs and running at KERNBASE.
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*/
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NON_GPROF_ENTRY(btext)
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/* Tell the bios to warmboot next time */
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movw $0x1234,0x472
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/* Don't trust what the loader gives for rflags. */
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pushq $PSL_KERNEL
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popfq
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/* Find the metadata pointers before we lose them */
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movq %rsp, %rbp
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movl 4(%rbp),%edi /* modulep (arg 1) */
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movl 8(%rbp),%esi /* kernend (arg 2) */
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/* Get onto a stack that we can trust - there is no going back now. */
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movq $bootstack,%rsp
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xorl %ebp, %ebp
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call hammer_time /* set up cpu for unix operation */
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movq %rax,%rsp /* set up kstack for mi_startup() */
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call mi_startup /* autoconfiguration, mountroot etc */
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0: hlt
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jmp 0b
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.bss
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ALIGN_DATA /* just to be sure */
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.globl bootstack
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.space 0x1000 /* space for bootstack - temporary stack */
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bootstack:
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