+++ /dev/null
-/*
- * (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
- * Condition register istructions: mtcr, mfcr, mcrxr,
- * crand, crandc, cror, crorc, crxor,
- * crnand, crnor, creqv, mcrf
- *
- * The mtcrf/mfcr instructions is tested by loading different
- * values into the condition register (mtcrf), moving its value
- * to a general-purpose register (mfcr) and comparing this value
- * with the expected one.
- * The mcrxr instruction is tested by loading a fixed value
- * into the XER register (mtspr), moving XER value to the
- * condition register (mcrxr), moving it to a general-purpose
- * register (mfcr) and comparing the value of this register with
- * the expected one.
- * The rest of instructions is tested by loading a fixed
- * value into the condition register (mtcrf), executing each
- * instruction several times to modify all 4-bit condition
- * fields, moving the value of the conditional register to a
- * general-purpose register (mfcr) and comparing it with the
- * expected one.
- */
-
-#ifdef CONFIG_POST
-
-#include <post.h>
-#include "cpu_asm.h"
-
-#if CONFIG_POST & CFG_POST_CPU
-
-extern void cpu_post_exec_11 (ulong *code, ulong *res, ulong op1);
-extern void cpu_post_exec_21x (ulong *code, ulong *op1, ulong *op2, ulong op3);
-
-static ulong cpu_post_cr_table1[] =
-{
- 0xaaaaaaaa,
- 0x55555555,
-};
-static unsigned int cpu_post_cr_size1 =
- sizeof (cpu_post_cr_table1) / sizeof (ulong);
-
-static struct cpu_post_cr_s2 {
- ulong xer;
- ulong cr;
-} cpu_post_cr_table2[] =
-{
- {
- 0xa0000000,
- 1
- },
- {
- 0x40000000,
- 5
- },
-};
-static unsigned int cpu_post_cr_size2 =
- sizeof (cpu_post_cr_table2) / sizeof (struct cpu_post_cr_s2);
-
-static struct cpu_post_cr_s3 {
- ulong cr;
- ulong cs;
- ulong cd;
- ulong res;
-} cpu_post_cr_table3[] =
-{
- {
- 0x01234567,
- 0,
- 4,
- 0x01230567
- },
- {
- 0x01234567,
- 7,
- 0,
- 0x71234567
- },
-};
-static unsigned int cpu_post_cr_size3 =
- sizeof (cpu_post_cr_table3) / sizeof (struct cpu_post_cr_s3);
-
-static struct cpu_post_cr_s4 {
- ulong cmd;
- ulong cr;
- ulong op1;
- ulong op2;
- ulong op3;
- ulong res;
-} cpu_post_cr_table4[] =
-{
- {
- OP_CRAND,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x0000ffff
- },
- {
- OP_CRAND,
- 0x0000ffff,
- 16,
- 17,
- 0,
- 0x8000ffff
- },
- {
- OP_CRANDC,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x0000ffff
- },
- {
- OP_CRANDC,
- 0x0000ffff,
- 16,
- 0,
- 0,
- 0x8000ffff
- },
- {
- OP_CROR,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x8000ffff
- },
- {
- OP_CROR,
- 0x0000ffff,
- 0,
- 1,
- 0,
- 0x0000ffff
- },
- {
- OP_CRORC,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x0000ffff
- },
- {
- OP_CRORC,
- 0x0000ffff,
- 0,
- 0,
- 0,
- 0x8000ffff
- },
- {
- OP_CRXOR,
- 0x0000ffff,
- 0,
- 0,
- 0,
- 0x0000ffff
- },
- {
- OP_CRXOR,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x8000ffff
- },
- {
- OP_CRNAND,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x8000ffff
- },
- {
- OP_CRNAND,
- 0x0000ffff,
- 16,
- 17,
- 0,
- 0x0000ffff
- },
- {
- OP_CRNOR,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x0000ffff
- },
- {
- OP_CRNOR,
- 0x0000ffff,
- 0,
- 1,
- 0,
- 0x8000ffff
- },
- {
- OP_CREQV,
- 0x0000ffff,
- 0,
- 0,
- 0,
- 0x8000ffff
- },
- {
- OP_CREQV,
- 0x0000ffff,
- 0,
- 16,
- 0,
- 0x0000ffff
- },
-};
-static unsigned int cpu_post_cr_size4 =
- sizeof (cpu_post_cr_table4) / sizeof (struct cpu_post_cr_s4);
-
-int cpu_post_test_cr (void)
-{
- int ret = 0;
- unsigned int i;
- unsigned long cr_sav;
-
- asm ( "mfcr %0" : "=r" (cr_sav) : );
-
- for (i = 0; i < cpu_post_cr_size1 && ret == 0; i++)
- {
- ulong cr = cpu_post_cr_table1[i];
- ulong res;
-
- unsigned long code[] =
- {
- ASM_MTCR(3),
- ASM_MFCR(3),
- ASM_BLR,
- };
-
- cpu_post_exec_11 (code, &res, cr);
-
- ret = res == cr ? 0 : -1;
-
- if (ret != 0)
- {
- post_log ("Error at cr1 test %d !\n", i);
- }
- }
-
- for (i = 0; i < cpu_post_cr_size2 && ret == 0; i++)
- {
- struct cpu_post_cr_s2 *test = cpu_post_cr_table2 + i;
- ulong res;
- ulong xer;
-
- unsigned long code[] =
- {
- ASM_MTXER(3),
- ASM_MCRXR(test->cr),
- ASM_MFCR(3),
- ASM_MFXER(4),
- ASM_BLR,
- };
-
- cpu_post_exec_21x (code, &res, &xer, test->xer);
-
- ret = xer == 0 && ((res << (4 * test->cr)) & 0xe0000000) == test->xer ?
- 0 : -1;
-
- if (ret != 0)
- {
- post_log ("Error at cr2 test %d !\n", i);
- }
- }
-
- for (i = 0; i < cpu_post_cr_size3 && ret == 0; i++)
- {
- struct cpu_post_cr_s3 *test = cpu_post_cr_table3 + i;
- ulong res;
-
- unsigned long code[] =
- {
- ASM_MTCR(3),
- ASM_MCRF(test->cd, test->cs),
- ASM_MFCR(3),
- ASM_BLR,
- };
-
- cpu_post_exec_11 (code, &res, test->cr);
-
- ret = res == test->res ? 0 : -1;
-
- if (ret != 0)
- {
- post_log ("Error at cr3 test %d !\n", i);
- }
- }
-
- for (i = 0; i < cpu_post_cr_size4 && ret == 0; i++)
- {
- struct cpu_post_cr_s4 *test = cpu_post_cr_table4 + i;
- ulong res;
-
- unsigned long code[] =
- {
- ASM_MTCR(3),
- ASM_12F(test->cmd, test->op3, test->op1, test->op2),
- ASM_MFCR(3),
- ASM_BLR,
- };
-
- cpu_post_exec_11 (code, &res, test->cr);
-
- ret = res == test->res ? 0 : -1;
-
- if (ret != 0)
- {
- post_log ("Error at cr4 test %d !\n", i);
- }
- }
-
- asm ( "mtcr %0" : : "r" (cr_sav));
-
- return ret;
-}
-
-#endif
-#endif
projects / oweals / u-boot.git / blobdiff