1 /* 2 * (C) Copyright 2002 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 26 /* 27 * CPU test 28 * Load/store multiple word instructions: lmw, stmw 29 * 30 * 27 consecutive words are loaded from a source memory buffer 31 * into GPRs r5 through r31. After that, 27 consecutive words are stored 32 * from the GPRs r5 through r31 into a target memory buffer. The contents 33 * of the source and target buffers are then compared. 34 */ 35 36 #include <post.h> 37 #include "cpu_asm.h" 38 39 #if CONFIG_POST & CONFIG_SYS_POST_CPU 40 41 extern void cpu_post_exec_02(ulong *code, ulong op1, ulong op2); 42 43 int cpu_post_test_multi(void) 44 { 45 int ret = 0; 46 unsigned int i; 47 ulong src[27], dst[27]; 48 int flag = disable_interrupts(); 49 50 ulong code[] = { 51 ASM_LMW(5, 3, 0), /* lmw r5, 0(r3) */ 52 ASM_STMW(5, 4, 0), /* stmr r5, 0(r4) */ 53 ASM_BLR, /* blr */ 54 }; 55 56 for (i = 0; i < ARRAY_SIZE(src); ++i) { 57 src[i] = i; 58 dst[i] = 0; 59 } 60 61 cpu_post_exec_02(code, (ulong) src, (ulong) dst); 62 63 ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1; 64 65 if (ret != 0) 66 post_log("Error at multi test !\n"); 67 68 if (flag) 69 enable_interrupts(); 70 71 return ret; 72 } 73 74 #endif 75