1a47a12beSStefan Roese /* 2a47a12beSStefan Roese * (C) Copyright 2002 3a47a12beSStefan Roese * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4a47a12beSStefan Roese * 5*1a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 6a47a12beSStefan Roese */ 7a47a12beSStefan Roese 8a47a12beSStefan Roese #include <common.h> 9a47a12beSStefan Roese 10a47a12beSStefan Roese /* 11a47a12beSStefan Roese * CPU test 12a47a12beSStefan Roese * Load/store multiple word instructions: lmw, stmw 13a47a12beSStefan Roese * 147ddd4475SWolfgang Denk * 27 consecutive words are loaded from a source memory buffer 157ddd4475SWolfgang Denk * into GPRs r5 through r31. After that, 27 consecutive words are stored 167ddd4475SWolfgang Denk * from the GPRs r5 through r31 into a target memory buffer. The contents 17a47a12beSStefan Roese * of the source and target buffers are then compared. 18a47a12beSStefan Roese */ 19a47a12beSStefan Roese 20a47a12beSStefan Roese #include <post.h> 21a47a12beSStefan Roese #include "cpu_asm.h" 22a47a12beSStefan Roese 23a47a12beSStefan Roese #if CONFIG_POST & CONFIG_SYS_POST_CPU 24a47a12beSStefan Roese 25a47a12beSStefan Roese extern void cpu_post_exec_02(ulong *code, ulong op1, ulong op2); 26a47a12beSStefan Roese 27a47a12beSStefan Roese int cpu_post_test_multi(void) 28a47a12beSStefan Roese { 29a47a12beSStefan Roese int ret = 0; 30a47a12beSStefan Roese unsigned int i; 317ddd4475SWolfgang Denk ulong src[27], dst[27]; 32a47a12beSStefan Roese int flag = disable_interrupts(); 33a47a12beSStefan Roese 34a63aec54SWolfgang Denk ulong code[] = { 3538081ff7SWolfgang Denk ASM_LMW(5, 3, 0), /* lmw r5, 0(r3) */ 3638081ff7SWolfgang Denk ASM_STMW(5, 4, 0), /* stmr r5, 0(r4) */ 3738081ff7SWolfgang Denk ASM_BLR, /* blr */ 38a47a12beSStefan Roese }; 39a47a12beSStefan Roese 40a63aec54SWolfgang Denk for (i = 0; i < ARRAY_SIZE(src); ++i) { 41a47a12beSStefan Roese src[i] = i; 42a47a12beSStefan Roese dst[i] = 0; 43a47a12beSStefan Roese } 44a47a12beSStefan Roese 45a47a12beSStefan Roese cpu_post_exec_02(code, (ulong) src, (ulong) dst); 46a47a12beSStefan Roese 47a47a12beSStefan Roese ret = memcmp(src, dst, sizeof(dst)) == 0 ? 0 : -1; 48a47a12beSStefan Roese 49a47a12beSStefan Roese if (ret != 0) 50a47a12beSStefan Roese post_log("Error at multi test !\n"); 51a47a12beSStefan Roese 52a47a12beSStefan Roese if (flag) 53a47a12beSStefan Roese enable_interrupts(); 54a47a12beSStefan Roese 55a47a12beSStefan Roese return ret; 56a47a12beSStefan Roese } 57a47a12beSStefan Roese 58a47a12beSStefan Roese #endif 59