1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2002
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7 #include <common.h>
8 #include <irq_func.h>
9
10 /*
11 * CPU test
12 * Load/store string instructions: lswi, stswi, lswx, stswx
13 *
14 * Several consecutive bytes from a source memory buffer are loaded
15 * left to right into GPRs. After that, the bytes are stored
16 * from the GPRs into a target memory buffer. The contents
17 * of the source and target buffers are then compared.
18 */
19
20 #include <post.h>
21 #include "cpu_asm.h"
22
23 #if CFG_POST & CFG_SYS_POST_CPU
24
25 extern void cpu_post_exec_02 (ulong *code, ulong op1, ulong op2);
26 extern void cpu_post_exec_04 (ulong *code, ulong op1, ulong op2, ulong op3,
27 ulong op4);
28
cpu_post_test_string(void)29 int cpu_post_test_string (void)
30 {
31 int ret = 0;
32 unsigned int i;
33 int flag = disable_interrupts();
34
35 if (ret == 0)
36 {
37 char src [31], dst [31];
38
39 ulong code[] =
40 {
41 ASM_LSWI(5, 3, 31),
42 ASM_STSWI(5, 4, 31),
43 ASM_BLR,
44 };
45
46 for (i = 0; i < sizeof(src); i ++)
47 {
48 src[i] = (char) i;
49 dst[i] = 0;
50 }
51
52 cpu_post_exec_02(code, (ulong)src, (ulong)dst);
53
54 ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
55 }
56
57 if (ret == 0)
58 {
59 char src [95], dst [95];
60
61 ulong code[] =
62 {
63 ASM_LSWX(8, 3, 5),
64 ASM_STSWX(8, 4, 5),
65 ASM_BLR,
66 };
67
68 for (i = 0; i < sizeof(src); i ++)
69 {
70 src[i] = (char) i;
71 dst[i] = 0;
72 }
73
74 cpu_post_exec_04(code, (ulong)src, (ulong)dst, 0, sizeof(src));
75
76 ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
77 }
78
79 if (ret != 0)
80 {
81 post_log ("Error at string test !\n");
82 }
83
84 if (flag)
85 enable_interrupts();
86
87 return ret;
88 }
89
90 #endif
91