1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * (C) Copyright 2002 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 */ 6 7#include <common.h> 8#include <irq_func.h> 9#include <log.h> 10 11/* 12 * CPU test 13 * Load/store multiple word instructions: lmw, stmw 14 * 15 * 27 consecutive words are loaded from a source memory buffer 16 * into GPRs r5 through r31. After that, 27 consecutive words are stored 17 * from the GPRs r5 through r31 into a target memory buffer. The contents 18 * of the source and target buffers are then compared. 19 */ 20 21#include <post.h> 22#include "cpu_asm.h" 23 24#if CFG_POST & CFG_SYS_POST_CPU 25 26extern void cpu_post_exec_02(ulong *code, ulong op1, ulong op2); 27 28int cpu_post_test_multi(void) 29{ 30 int ret = 0; 31 unsigned int i; 32 ulong src[27], dst[27]; 33 int flag = disable_interrupts(); 34 35 ulong code[] = { 36 ASM_LMW(5, 3, 0), /* lmw r5, 0(r3) */ 37 ASM_STMW(5, 4, 0), /* stmr r5, 0(r4) */ 38 ASM_BLR, /* blr */ 39 }; 40 41 for (i = 0; i < ARRAY_SIZE(src); ++i) { 42 src[i] = i; 43 dst[i] = 0; 44 } 45 46 cpu_post_exec_02(code, (ulong) src, (ulong) dst); 47 48 ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1; 49 50 if (ret != 0) 51 post_log("Error at multi test !\n"); 52 53 if (flag) 54 enable_interrupts(); 55 56 return ret; 57} 58 59#endif 60