Tom Rini | 83d290c | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 2 | /* |
| 3 | * (C) Copyright 2002 |
| 4 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | |
| 9 | /* |
| 10 | * CPU test |
| 11 | * Shift instructions: rlwinm |
| 12 | * |
| 13 | * The test contains a pre-built table of instructions, operands and |
| 14 | * expected results. For each table entry, the test will cyclically use |
| 15 | * different sets of operand registers and result registers. |
| 16 | */ |
| 17 | |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 18 | #include <post.h> |
| 19 | #include "cpu_asm.h" |
| 20 | |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 21 | #if CONFIG_POST & CONFIG_SYS_POST_CPU |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 22 | |
| 23 | extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op1); |
| 24 | extern ulong cpu_post_makecr (long v); |
| 25 | |
| 26 | static struct cpu_post_rlwinm_s |
| 27 | { |
| 28 | ulong cmd; |
| 29 | ulong op1; |
| 30 | uchar op2; |
| 31 | uchar mb; |
| 32 | uchar me; |
| 33 | ulong res; |
| 34 | } cpu_post_rlwinm_table[] = |
| 35 | { |
| 36 | { |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 37 | OP_RLWINM, |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 38 | 0xffff0000, |
| 39 | 24, |
| 40 | 16, |
| 41 | 23, |
| 42 | 0x0000ff00 |
| 43 | }, |
| 44 | }; |
Mike Frysinger | d239781 | 2011-05-10 07:28:35 +0000 | [diff] [blame] | 45 | static unsigned int cpu_post_rlwinm_size = ARRAY_SIZE(cpu_post_rlwinm_table); |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 46 | |
| 47 | int cpu_post_test_rlwinm (void) |
| 48 | { |
| 49 | int ret = 0; |
| 50 | unsigned int i, reg; |
| 51 | int flag = disable_interrupts(); |
| 52 | |
| 53 | for (i = 0; i < cpu_post_rlwinm_size && ret == 0; i++) |
| 54 | { |
| 55 | struct cpu_post_rlwinm_s *test = cpu_post_rlwinm_table + i; |
| 56 | |
| 57 | for (reg = 0; reg < 32 && ret == 0; reg++) |
| 58 | { |
| 59 | unsigned int reg0 = (reg + 0) % 32; |
| 60 | unsigned int reg1 = (reg + 1) % 32; |
| 61 | unsigned int stk = reg < 16 ? 31 : 15; |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 62 | unsigned long code[] = |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 63 | { |
| 64 | ASM_STW(stk, 1, -4), |
| 65 | ASM_ADDI(stk, 1, -16), |
| 66 | ASM_STW(3, stk, 8), |
| 67 | ASM_STW(reg0, stk, 4), |
| 68 | ASM_STW(reg1, stk, 0), |
| 69 | ASM_LWZ(reg0, stk, 8), |
| 70 | ASM_113(test->cmd, reg1, reg0, test->op2, test->mb, test->me), |
| 71 | ASM_STW(reg1, stk, 8), |
| 72 | ASM_LWZ(reg1, stk, 0), |
| 73 | ASM_LWZ(reg0, stk, 4), |
| 74 | ASM_LWZ(3, stk, 8), |
| 75 | ASM_ADDI(1, stk, 16), |
| 76 | ASM_LWZ(stk, 1, -4), |
| 77 | ASM_BLR, |
| 78 | }; |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 79 | unsigned long codecr[] = |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 80 | { |
| 81 | ASM_STW(stk, 1, -4), |
| 82 | ASM_ADDI(stk, 1, -16), |
| 83 | ASM_STW(3, stk, 8), |
| 84 | ASM_STW(reg0, stk, 4), |
| 85 | ASM_STW(reg1, stk, 0), |
| 86 | ASM_LWZ(reg0, stk, 8), |
| 87 | ASM_113(test->cmd, reg1, reg0, test->op2, test->mb, |
| 88 | test->me) | BIT_C, |
| 89 | ASM_STW(reg1, stk, 8), |
| 90 | ASM_LWZ(reg1, stk, 0), |
| 91 | ASM_LWZ(reg0, stk, 4), |
| 92 | ASM_LWZ(3, stk, 8), |
| 93 | ASM_ADDI(1, stk, 16), |
| 94 | ASM_LWZ(stk, 1, -4), |
| 95 | ASM_BLR, |
| 96 | }; |
| 97 | ulong res; |
| 98 | ulong cr; |
| 99 | |
| 100 | if (ret == 0) |
| 101 | { |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 102 | cr = 0; |
| 103 | cpu_post_exec_21 (code, & cr, & res, test->op1); |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 104 | |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 105 | ret = res == test->res && cr == 0 ? 0 : -1; |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 106 | |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 107 | if (ret != 0) |
| 108 | { |
Wolfgang Denk | 93e1459 | 2013-10-04 17:43:24 +0200 | [diff] [blame] | 109 | post_log ("Error at rlwinm test %d !\n", i); |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 110 | } |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | if (ret == 0) |
| 114 | { |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 115 | cpu_post_exec_21 (codecr, & cr, & res, test->op1); |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 116 | |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 117 | ret = res == test->res && |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 118 | (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1; |
| 119 | |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 120 | if (ret != 0) |
| 121 | { |
Wolfgang Denk | 93e1459 | 2013-10-04 17:43:24 +0200 | [diff] [blame] | 122 | post_log ("Error at rlwinm test %d !\n", i); |
| 123 | } |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 124 | } |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | if (flag) |
Wolfgang Denk | 53677ef | 2008-05-20 16:00:29 +0200 | [diff] [blame] | 129 | enable_interrupts(); |
Wolfgang Denk | ad5bb45 | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 130 | |
| 131 | return ret; |
| 132 | } |
| 133 | |
| 134 | #endif |