/* * (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: 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. */ #ifdef CONFIG_POST #include <post.h> #include "cpu_asm.h" #if CONFIG_POST & CFG_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 = sizeof (cpu_post_cmp_table) / sizeof (struct cpu_post_cmp_s); int cpu_post_test_cmp (void) { int ret = 0; unsigned int i; 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); } } return ret; } #endif #endif