multi.c
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/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
/*
* CPU test
* Load/store multiple word instructions: lmw, stmw
*
* 27 consecutive words are loaded from a source memory buffer
* into GPRs r5 through r31. After that, 27 consecutive words are stored
* from the GPRs r5 through r31 into a target memory buffer. The contents
* of the source and target buffers are then compared.
*/
#include <post.h>
#include "cpu_asm.h"
#if CONFIG_POST & CONFIG_SYS_POST_CPU
extern void cpu_post_exec_02(ulong *code, ulong op1, ulong op2);
int cpu_post_test_multi(void)
{
int ret = 0;
unsigned int i;
ulong src[27], dst[27];
int flag = disable_interrupts();
ulong code[] = {
ASM_LMW(5, 3, 0), /* lmw r5, 0(r3) */
ASM_STMW(5, 4, 0), /* stmr r5, 0(r4) */
ASM_BLR, /* blr */
};
for (i = 0; i < ARRAY_SIZE(src); ++i) {
src[i] = i;
dst[i] = 0;
}
cpu_post_exec_02(code, (ulong) src, (ulong) dst);
ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1;
if (ret != 0)
post_log("Error at multi test !\n");
if (flag)
enable_interrupts();
return ret;
}
#endif