source: mainline/boot/arch/ia64/loader/boot.S@ 8ccd2ea

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8ccd2ea was 7208b6c, checked in by Jakub Vana <jakub.vana@…>, 17 years ago

Basic IA64 boot and kernel suport for real machines

  • Property mode set to 100644
File size: 2.1 KB
Line 
1#
2# Copyright (c) 2006 Martin Decky
3# Copyright (c) 2006 Jakub Jermar
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 <stack.h>
31
32.section BOOTSTRAP, "ax"
33
34.global start
35start:
36
37 mov ar.rsc = r0
38# movl r8 = (VRN_KERNEL << VRN_SHIFT) ;;
39 movl r1 = 0x4400000
40 movl r8 = initial_stack ;;
41 mov ar.bspstore = r8
42 loadrs
43
44 # initialize memory stack to some sane value
45 movl r12 = initial_stack_top ;;
46
47 add r12 = -16, r12 /* allocate a scratch area on the stack */
48
49 # initialize gp (Global Pointer) register
50 #movl r1 = _hardcoded_load_address
51
52 ssm (1 << 19) ;; /* Disable f32 - f127 */
53 srlz.i
54 srlz.d ;;
55
56 movl r18 = bootstrap ;;
57 mov b1 = r18 ;;
58 br.call.sptk.many b0 = b1
59
60.bss #on this line is ".bss", it cannot be seen in my mcedit :-(
61
62
63.align 8192
64
65initial_stack:
66 .space 8192
67
68initial_stack_top:
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