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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
| * Integer compare instructions: cmpw, cmplw
| *
| * To verify these instructions the test runs them with
| * different combinations of operands, reads the condition
| * register value and compares it with the expected one.
| * The test contains a pre-built table
| * containing the description of each test case: the instruction,
| * the values of the operands, the condition field to save
| * the result in and the expected result.
| */
|
| #include <post.h>
| #include "cpu_asm.h"
|
| #if CONFIG_POST & CONFIG_SYS_POST_CPU
|
| extern void cpu_post_exec_12 (ulong *code, ulong *res, ulong op1, ulong op2);
|
| static struct cpu_post_cmp_s
| {
| ulong cmd;
| ulong op1;
| ulong op2;
| ulong cr;
| ulong res;
| } cpu_post_cmp_table[] =
| {
| {
| OP_CMPW,
| 123,
| 123,
| 2,
| 0x02
| },
| {
| OP_CMPW,
| 123,
| 133,
| 3,
| 0x08
| },
| {
| OP_CMPW,
| 123,
| -133,
| 4,
| 0x04
| },
| {
| OP_CMPLW,
| 123,
| 123,
| 2,
| 0x02
| },
| {
| OP_CMPLW,
| 123,
| -133,
| 3,
| 0x08
| },
| {
| OP_CMPLW,
| 123,
| 113,
| 4,
| 0x04
| },
| };
| static unsigned int cpu_post_cmp_size = ARRAY_SIZE(cpu_post_cmp_table);
|
| int cpu_post_test_cmp (void)
| {
| int ret = 0;
| unsigned int i;
| int flag = disable_interrupts();
|
| for (i = 0; i < cpu_post_cmp_size && ret == 0; i++)
| {
| struct cpu_post_cmp_s *test = cpu_post_cmp_table + i;
| unsigned long code[] =
| {
| ASM_2C(test->cmd, test->cr, 3, 4),
| ASM_MFCR(3),
| ASM_BLR
| };
| ulong res;
|
| cpu_post_exec_12 (code, & res, test->op1, test->op2);
|
| ret = ((res >> (28 - 4 * test->cr)) & 0xe) == test->res ? 0 : -1;
|
| if (ret != 0)
| {
| post_log ("Error at cmp test %d !\n", i);
| }
| }
|
| if (flag)
| enable_interrupts();
|
| return ret;
| }
|
| #endif
|
|
