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Wolfgang Denkad5bb452007-03-06 18:08:43 +01001/*
2 * (C) Copyright 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
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 <common.h>
25
26/*
27 * CPU test
28 * Load/store string instructions: lswi, stswi, lswx, stswx
29 *
30 * Several consecutive bytes from a source memory buffer are loaded
31 * left to right into GPRs. After that, the bytes are stored
32 * from the GPRs into a target memory buffer. The contents
33 * of the source and target buffers are then compared.
34 */
35
36#ifdef CONFIG_POST
37
38#include <post.h>
39#include "cpu_asm.h"
40
41#if CONFIG_POST & CFG_POST_CPU
42
43extern void cpu_post_exec_02 (ulong *code, ulong op1, ulong op2);
44extern void cpu_post_exec_04 (ulong *code, ulong op1, ulong op2, ulong op3,
45 ulong op4);
46
47#include <bedbug/regs.h>
48int cpu_post_test_string (void)
49{
50 int ret = 0;
51 unsigned int i;
52
53 if (ret == 0)
54 {
55 char src [31], dst [31];
56
57 ulong code[] =
58 {
59 ASM_LSWI(5, 3, 31),
60 ASM_STSWI(5, 4, 31),
61 ASM_BLR,
62 };
63
64 for (i = 0; i < sizeof(src); i ++)
65 {
66 src[i] = (char) i;
67 dst[i] = 0;
68 }
69
70 cpu_post_exec_02(code, (ulong)src, (ulong)dst);
71
72 ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
73 }
74
75 if (ret == 0)
76 {
77 char src [95], dst [95];
78
79 ulong code[] =
80 {
81 ASM_LSWX(8, 3, 5),
82 ASM_STSWX(8, 4, 5),
83 ASM_BLR,
84 };
85
86 for (i = 0; i < sizeof(src); i ++)
87 {
88 src[i] = (char) i;
89 dst[i] = 0;
90 }
91
92 cpu_post_exec_04(code, (ulong)src, (ulong)dst, 0, sizeof(src));
93
94 ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
95 }
96
97 if (ret != 0)
98 {
99 post_log ("Error at string test !\n");
100 }
101
102 return ret;
103}
104
105#endif
106#endif