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1 | /* | |
2 | * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | |
3 | * Copyright (C) 2008 Renesas Solutions Corp. | |
4 | ||
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License as | |
7 | * published by the Free Software Foundation; either version 2 of | |
8 | * the License, or (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
18 | * MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <version.h> | |
23 | ||
24 | .text | |
25 | .align 2 | |
26 | ||
27 | .global _start | |
28 | _start: | |
29 | .long 0x00000010 /* Ppower ON reset PC*/ | |
30 | .long 0x00000000 | |
31 | .long 0x00000010 /* Manual reset PC */ | |
32 | .long 0x00000000 | |
33 | _init: | |
34 | mov.l ._lowlevel_init, r0 | |
35 | 100: bsrf r0 | |
36 | nop | |
37 | bsr 1f | |
38 | nop | |
39 | 1: sts pr, r5 | |
40 | mov.l ._reloc_dst, r4 | |
41 | add #(_start-1b), r5 | |
42 | mov.l ._reloc_dst_end, r6 | |
43 | ||
44 | 2: mov.l @r5+, r1 | |
45 | mov.l r1, @r4 | |
46 | add #4, r4 | |
47 | cmp/hs r6, r4 | |
48 | bf 2b | |
49 | ||
50 | mov.l ._bss_start, r4 | |
51 | mov.l ._bss_end, r5 | |
52 | mov #0, r1 | |
53 | ||
54 | 3: mov.l r1, @r4 /* bss clear */ | |
55 | add #4, r4 | |
56 | cmp/hs r5, r4 | |
57 | bf 3b | |
58 | ||
59 | mov.l ._gd_init, r13 /* global data */ | |
60 | mov.l ._stack_init, r15 /* stack */ | |
61 | ||
62 | mov.l ._sh_generic_init, r0 | |
63 | jsr @r0 | |
64 | nop | |
65 | ||
66 | loop: | |
67 | bra loop | |
68 | ||
69 | .align 2 | |
70 | ||
71 | ._lowlevel_init: .long (lowlevel_init - (100b + 4)) | |
72 | ._reloc_dst: .long reloc_dst | |
73 | ._reloc_dst_end: .long reloc_dst_end | |
74 | ._bss_start: .long bss_start | |
75 | ._bss_end: .long bss_end | |
76 | ._gd_init: .long (_start - CONFIG_SYS_GBL_DATA_SIZE) | |
77 | ._stack_init: .long (_start - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16) | |
78 | ._sh_generic_init: .long sh_generic_init |