2 * Copyright (c) 2003 Peter Wemm <peter@FreeBSD.org>
3 * Copyright (c) 2013 Roger Pau Monne <royger@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <machine/asmacros.h>
31 #include <machine/psl.h>
32 #include <machine/pmap.h>
33 #include <machine/specialreg.h>
35 #include <xen/xen-os.h>
37 #include <xen/interface/elfnote.h>
42 ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "FreeBSD")
43 ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, __XSTRING(__FreeBSD_version))
44 ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0")
45 ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .quad, KERNBASE)
46 ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, .quad, KERNBASE) /* Xen honours elf->p_paddr; compensate for this */
47 ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, .quad, xen_start)
48 ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .quad, hypercall_page)
49 ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW, .quad, HYPERVISOR_VIRT_START)
50 ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz, "writable_descriptor_tables|auto_translated_physmap|supervisor_mode_kernel|hvm_callback_vector")
51 ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz, "yes")
52 ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID, .long, PG_V, PG_V)
53 ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz, "generic")
54 ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long, 0)
55 ELFNOTE(Xen, XEN_ELFNOTE_BSD_SYMTAB, .asciz, "yes")
58 .p2align PAGE_SHIFT, 0x90 /* Hypercall_page needs to be PAGE aligned */
60 NON_GPROF_ENTRY(hypercall_page)
61 .skip 0x1000, 0x90 /* Fill with "nop"s */
63 NON_GPROF_ENTRY(xen_start)
64 /* Don't trust what the loader gives for rflags. */
68 /* Parameters for the xen init function */
69 movq %rsi, %rdi /* shared_info (arg 1) */
70 movq %rsp, %rsi /* xenstack (arg 2) */
72 /* Use our own stack */
76 /* u_int64_t hammer_time_xen(start_info_t *si, u_int64_t xenstack); */
78 movq %rax, %rsp /* set up kstack for mi_startup() */
79 call mi_startup /* autoconfiguration, mountroot etc */