source: mainline/boot/arch/ia64/src/boot.S

Last change on this file was 27f67f5, checked in by Jakub Jermar <jakub@…>, 9 years ago

ia64: use asmtool.h macros for defining symbols

  • Property mode set to 100644
File size: 2.2 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 <abi/asmtool.h>
31#include <arch/arch.h>
32
33.section BOOTSTRAP, "ax"
34
35SYMBOL(start)
36 movl gp = __gp
37
38 #
39 # Save the boot parameter structure address passed from the
40 # ELILO-compatible EFI loader.
41 #
42 movl r8 = bootpar ;;
43 st8 [r8] = r28
44
45 #
46 # Initialize the register stack to some sane value.
47 #
48 mov ar.rsc = r0
49 movl r8 = initial_stack ;;
50 mov ar.bspstore = r8
51 loadrs
52
53 #
54 # Initialize memory stack to some sane value and allocate a scratch area
55 # on it.
56 #
57 movl r12 = initial_stack_top ;;
58 add r12 = -16, r12
59
60 #
61 # Disable Floating-point High register set (f32 - f127)
62 #
63 ssm (1 << 19) ;;
64 srlz.i
65 srlz.d ;;
66
67 br.call.sptk.many rp = bootstrap
68
69.bss
70
71SYMBOL(bootpar)
72 .quad 0
73
74.align STACK_SIZE
75initial_stack:
76 .space STACK_SIZE
77initial_stack_top:
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