source: mainline/kernel/arch/xen32/src/boot/boot.S@ 6f3809e

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 6f3809e was e12ccc5, checked in by Martin Decky <martin@…>, 19 years ago

xen32: use writable page tables, cleanup mm

  • Property mode set to 100644
File size: 2.2 KB
RevLine 
[380954d9]1#
2# Copyright (C) 2001-2004 Jakub Jermar
3# Copyright (C) 2005-2006 Martin Decky
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9#
10# - Redistributions of source code must retain the above copyright
11# notice, this list of conditions and the following disclaimer.
12# - Redistributions in binary form must reproduce the above copyright
13# notice, this list of conditions and the following disclaimer in the
14# documentation and/or other materials provided with the distribution.
15# - The name of the author may not be used to endorse or promote products
16# derived from this software without specific prior written permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28#
29
30#include <arch/boot/boot.h>
31#include <arch/mm/page.h>
32#include <arch/pm.h>
33
34.section __xen_guest
[e12ccc5]35 .ascii "GUEST_OS=HelenOS,"
36 .ascii "XEN_VER=xen-3.0,"
37 .ascii "HYPERCALL_PAGE=0x0000,"
38 .ascii "LOADER=generic,"
39 .ascii "FEATURES=writable_page_tables"
[380954d9]40 .byte 0
41
[0356274]42.text
[380954d9]43
44.code32
45.align 4
[983cd374]46.global kernel_image_start
[380954d9]47
[983cd374]48kernel_image_start:
[4965a846]49 # copy start_info (esi initialized by Xen)
50
51 movl $start_info, %edi
52 movl $START_INFO_SIZE >> 2, %ecx
53 cld
54 rep movsb
[e12ccc5]55
56 # switch to temporal kernel stack
57
58 movl $kernel_stack, %esp
59
60 call arch_pre_main
[380954d9]61 call main_bsp # never returns
62
63 cli
64 hlt
65
[e12ccc5]66kernel_stack_bottom:
67 .space TEMP_STACK_SIZE
68kernel_stack:
69
[aecf79f]70.section K_TEXT_START, "aw", @progbits
[4965a846]71.global hypercall_page
[aecf79f]72.org 0
[4965a846]73hypercall_page:
74 .space PAGE_SIZE
[e12ccc5]75
76.global shared_info
77.org 0x1000
78shared_info:
79 .space PAGE_SIZE
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