134 lines
2.5 KiB
C
134 lines
2.5 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
|
|
/*
|
|
* CPU test
|
|
* Integer compare instructions: cmpwi, cmplwi
|
|
*
|
|
* 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_11 (ulong *code, ulong *res, ulong op1);
|
|
|
|
static struct cpu_post_cmpi_s
|
|
{
|
|
ulong cmd;
|
|
ulong op1;
|
|
ushort op2;
|
|
ulong cr;
|
|
ulong res;
|
|
} cpu_post_cmpi_table[] =
|
|
{
|
|
{
|
|
OP_CMPWI,
|
|
123,
|
|
123,
|
|
2,
|
|
0x02
|
|
},
|
|
{
|
|
OP_CMPWI,
|
|
123,
|
|
133,
|
|
3,
|
|
0x08
|
|
},
|
|
{
|
|
OP_CMPWI,
|
|
123,
|
|
-133,
|
|
4,
|
|
0x04
|
|
},
|
|
{
|
|
OP_CMPLWI,
|
|
123,
|
|
123,
|
|
2,
|
|
0x02
|
|
},
|
|
{
|
|
OP_CMPLWI,
|
|
123,
|
|
-133,
|
|
3,
|
|
0x08
|
|
},
|
|
{
|
|
OP_CMPLWI,
|
|
123,
|
|
113,
|
|
4,
|
|
0x04
|
|
},
|
|
};
|
|
static unsigned int cpu_post_cmpi_size = ARRAY_SIZE(cpu_post_cmpi_table);
|
|
|
|
int cpu_post_test_cmpi (void)
|
|
{
|
|
int ret = 0;
|
|
unsigned int i;
|
|
int flag = disable_interrupts();
|
|
|
|
for (i = 0; i < cpu_post_cmpi_size && ret == 0; i++)
|
|
{
|
|
struct cpu_post_cmpi_s *test = cpu_post_cmpi_table + i;
|
|
unsigned long code[] =
|
|
{
|
|
ASM_1IC(test->cmd, test->cr, 3, test->op2),
|
|
ASM_MFCR(3),
|
|
ASM_BLR
|
|
};
|
|
ulong res;
|
|
|
|
cpu_post_exec_11 (code, & res, test->op1);
|
|
|
|
ret = ((res >> (28 - 4 * test->cr)) & 0xe) == test->res ? 0 : -1;
|
|
|
|
if (ret != 0)
|
|
{
|
|
post_log ("Error at cmpi test %d !\n", i);
|
|
}
|
|
}
|
|
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif
|