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