157 lines
2.7 KiB
C
157 lines
2.7 KiB
C
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// 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, wd@denx.de.
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*/
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#include <common.h>
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#include <irq_func.h>
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/*
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* CPU test
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* Binary instructions instr rD,rA
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*
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* Logic instructions: neg
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* Arithmetic instructions: addme, addze, subfme, subfze
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* The test contains a pre-built table of instructions, operands and
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* expected results. For each table entry, the test will cyclically use
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* different sets of operand registers and result registers.
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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_21 (ulong *code, ulong *cr, ulong *res, ulong op1);
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extern ulong cpu_post_makecr (long v);
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static struct cpu_post_two_s
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{
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ulong cmd;
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ulong op;
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ulong res;
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} cpu_post_two_table[] =
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{
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{
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OP_NEG,
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3,
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-3
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},
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{
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OP_NEG,
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5,
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-5
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},
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{
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OP_ADDME,
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6,
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5
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},
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{
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OP_ADDZE,
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5,
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5
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},
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{
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OP_SUBFME,
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6,
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~6 - 1
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},
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{
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OP_SUBFZE,
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5,
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~5
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},
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};
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static unsigned int cpu_post_two_size = ARRAY_SIZE(cpu_post_two_table);
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int cpu_post_test_two (void)
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{
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int ret = 0;
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unsigned int i, reg;
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int flag = disable_interrupts();
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for (i = 0; i < cpu_post_two_size && ret == 0; i++)
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{
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struct cpu_post_two_s *test = cpu_post_two_table + i;
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for (reg = 0; reg < 32 && ret == 0; reg++)
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{
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unsigned int reg0 = (reg + 0) % 32;
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unsigned int reg1 = (reg + 1) % 32;
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unsigned int stk = reg < 16 ? 31 : 15;
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unsigned long code[] =
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{
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ASM_STW(stk, 1, -4),
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ASM_ADDI(stk, 1, -16),
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ASM_STW(3, stk, 8),
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ASM_STW(reg0, stk, 4),
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ASM_STW(reg1, stk, 0),
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ASM_LWZ(reg0, stk, 8),
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ASM_11(test->cmd, reg1, reg0),
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ASM_STW(reg1, stk, 8),
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ASM_LWZ(reg1, stk, 0),
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ASM_LWZ(reg0, stk, 4),
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ASM_LWZ(3, stk, 8),
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ASM_ADDI(1, stk, 16),
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ASM_LWZ(stk, 1, -4),
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ASM_BLR,
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};
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unsigned long codecr[] =
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{
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ASM_STW(stk, 1, -4),
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ASM_ADDI(stk, 1, -16),
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ASM_STW(3, stk, 8),
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ASM_STW(reg0, stk, 4),
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ASM_STW(reg1, stk, 0),
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ASM_LWZ(reg0, stk, 8),
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ASM_11(test->cmd, reg1, reg0) | BIT_C,
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ASM_STW(reg1, stk, 8),
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ASM_LWZ(reg1, stk, 0),
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ASM_LWZ(reg0, stk, 4),
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ASM_LWZ(3, stk, 8),
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ASM_ADDI(1, stk, 16),
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ASM_LWZ(stk, 1, -4),
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ASM_BLR,
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};
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ulong res;
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ulong cr;
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if (ret == 0)
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{
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cr = 0;
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cpu_post_exec_21 (code, & cr, & res, test->op);
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ret = res == test->res && cr == 0 ? 0 : -1;
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if (ret != 0)
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{
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post_log ("Error at two test %d !\n", i);
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}
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}
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if (ret == 0)
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{
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cpu_post_exec_21 (codecr, & cr, & res, test->op);
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ret = res == test->res &&
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(cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
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if (ret != 0)
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{
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post_log ("Error at two test %d !\n", i);
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}
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}
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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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