1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2002
3*4882a593Smuzhiyun * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun /*
11*4882a593Smuzhiyun * CPU test
12*4882a593Smuzhiyun * Load/store multiple word instructions: lmw, stmw
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * 27 consecutive words are loaded from a source memory buffer
15*4882a593Smuzhiyun * into GPRs r5 through r31. After that, 27 consecutive words are stored
16*4882a593Smuzhiyun * from the GPRs r5 through r31 into a target memory buffer. The contents
17*4882a593Smuzhiyun * of the source and target buffers are then compared.
18*4882a593Smuzhiyun */
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #include <post.h>
21*4882a593Smuzhiyun #include "cpu_asm.h"
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #if CONFIG_POST & CONFIG_SYS_POST_CPU
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun extern void cpu_post_exec_02(ulong *code, ulong op1, ulong op2);
26*4882a593Smuzhiyun
cpu_post_test_multi(void)27*4882a593Smuzhiyun int cpu_post_test_multi(void)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun int ret = 0;
30*4882a593Smuzhiyun unsigned int i;
31*4882a593Smuzhiyun ulong src[27], dst[27];
32*4882a593Smuzhiyun int flag = disable_interrupts();
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun ulong code[] = {
35*4882a593Smuzhiyun ASM_LMW(5, 3, 0), /* lmw r5, 0(r3) */
36*4882a593Smuzhiyun ASM_STMW(5, 4, 0), /* stmr r5, 0(r4) */
37*4882a593Smuzhiyun ASM_BLR, /* blr */
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun for (i = 0; i < ARRAY_SIZE(src); ++i) {
41*4882a593Smuzhiyun src[i] = i;
42*4882a593Smuzhiyun dst[i] = 0;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun cpu_post_exec_02(code, (ulong) src, (ulong) dst);
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun if (ret != 0)
50*4882a593Smuzhiyun post_log("Error at multi test !\n");
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun if (flag)
53*4882a593Smuzhiyun enable_interrupts();
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun return ret;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun #endif
59