1/*
2 * Copyright (c) 2011 Aeroflex Gaisler
3 *
4 * BSD license:
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25
26#include <asm-leon/head.h>
27
28	.section .text
29	/* ------- */
30	.weak	_hardreset_svt
31	.set	_hardreset_svt, __hardreset_svt
32	/* ------- */
33	.global	_hardreset, _hardreset_svt_real
34
35! reset entry point for single vector trapping. Try enable svt
36_hardreset_svt_real:
37	nop
38__hardreset_svt:
39	mov	%psr, %l3
40	srl	%l3, 24, %g5
41	and  	%g5, 3, %g5
42	subcc	%g5, 3, %g0             ! leon2: 0 or 2, leon3:	3
43	bne	.L2
44	nop
45
46	mov	%asr17, %g5		! set svt
47	set     1<<13,%g1
48	or      %g5,%g1,%g5
49	mov     %g5, %asr17
50	nop;  nop; nop
51	mov	%asr17,%g5 		! check svt
52	andcc	%g5, %g1, %g0
53	beq	.L2
54	 nop
55
56	set _hardreset,%l3
57	jmp %l3
58         nop
59
60.L2:	ta    0x0			! no svt implemented (ether leon2 or svt != 1)
61        nop
62
63