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116 lines
1.8 KiB
116 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2002 |
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* Wolfgang Denk, DENX Software Engineering, [email protected]. |
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*/ |
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#include <common.h> |
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/* |
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* CPU test |
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* Integer compare instructions: cmpw, cmplw |
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* |
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* To verify these instructions the test runs them with |
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* different combinations of operands, reads the condition |
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* register value and compares it with the expected one. |
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* The test contains a pre-built table |
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* containing the description of each test case: the instruction, |
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* the values of the operands, the condition field to save |
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* the result in and the expected result. |
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*/ |
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#include <post.h> |
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#include "cpu_asm.h" |
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#if CONFIG_POST & CONFIG_SYS_POST_CPU |
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extern void cpu_post_exec_12 (ulong *code, ulong *res, ulong op1, ulong op2); |
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static struct cpu_post_cmp_s |
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{ |
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ulong cmd; |
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ulong op1; |
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ulong op2; |
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ulong cr; |
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ulong res; |
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} cpu_post_cmp_table[] = |
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{ |
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{ |
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OP_CMPW, |
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123, |
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123, |
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2, |
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0x02 |
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}, |
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{ |
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OP_CMPW, |
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123, |
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133, |
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3, |
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0x08 |
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}, |
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{ |
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OP_CMPW, |
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123, |
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-133, |
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4, |
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0x04 |
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}, |
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{ |
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OP_CMPLW, |
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123, |
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123, |
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2, |
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0x02 |
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}, |
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{ |
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OP_CMPLW, |
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123, |
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-133, |
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3, |
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0x08 |
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}, |
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{ |
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OP_CMPLW, |
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123, |
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113, |
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4, |
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0x04 |
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}, |
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}; |
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static unsigned int cpu_post_cmp_size = ARRAY_SIZE(cpu_post_cmp_table); |
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int cpu_post_test_cmp (void) |
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{ |
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int ret = 0; |
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unsigned int i; |
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int flag = disable_interrupts(); |
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for (i = 0; i < cpu_post_cmp_size && ret == 0; i++) |
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{ |
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struct cpu_post_cmp_s *test = cpu_post_cmp_table + i; |
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unsigned long code[] = |
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{ |
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ASM_2C(test->cmd, test->cr, 3, 4), |
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ASM_MFCR(3), |
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ASM_BLR |
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}; |
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ulong res; |
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cpu_post_exec_12 (code, & res, test->op1, test->op2); |
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ret = ((res >> (28 - 4 * test->cr)) & 0xe) == test->res ? 0 : -1; |
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if (ret != 0) |
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{ |
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post_log ("Error at cmp test %d !\n", i); |
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} |
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} |
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if (flag) |
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enable_interrupts(); |
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return ret; |
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} |
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#endif
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