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Yoshihiro Shimodaf9913a82007-12-03 22:58:45 +09001/*
2 * (C) Copyright 2007
3 * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
4 *
5 * (C) Copyright 2007
6 * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <config.h>
25#include <version.h>
26
27 .text
28 .align 2
29
30 .global _start
31_start:
32 mov.l ._lowlevel_init, r0
33100: bsrf r0
34 nop
35
36 bsr 1f
37 nop
381: sts pr, r5
39 mov.l ._reloc_dst, r4
40 add #(_start-1b), r5
41 mov.l ._reloc_dst_end, r6
42
432: mov.l @r5+, r1
44 mov.l r1, @r4
45 add #4, r4
46 cmp/hs r6, r4
47 bf 2b
48
49 mov.l ._bss_start, r4
50 mov.l ._bss_end, r5
51 mov #0, r1
52
533: mov.l r1, @r4 /* bss clear */
54 add #4, r4
55 cmp/hs r5, r4
56 bf 3b
57
58 mov.l ._gd_init, r13 /* global data */
59 mov.l ._stack_init, r15 /* stack */
60
61 mov.l ._sh_generic_init, r0
62 jsr @r0
63 nop
64
65loop:
66 bra loop
67
68 .align 2
69
70._lowlevel_init: .long (lowlevel_init - (100b + 4))
71._reloc_dst: .long reloc_dst
72._reloc_dst_end: .long reloc_dst_end
73._bss_start: .long bss_start
74._bss_end: .long bss_end
75._gd_init: .long (_start - CFG_GBL_DATA_SIZE)
76._stack_init: .long (_start - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN - 16)
77._sh_generic_init: .long sh_generic_init