1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
11 * Ternary instructions instr rA,rS,rB
13 * Logic instructions: or, orc, xor, nand, nor, eqv
14 * Shift instructions: slw, srw, sraw
16 * The test contains a pre-built table of instructions, operands and
17 * expected results. For each table entry, the test will cyclically use
18 * different sets of operand registers and result registers.
24 #if CONFIG_POST & CONFIG_SYS_POST_CPU
26 extern void cpu_post_exec_22 (ulong *code, ulong *cr, ulong *res, ulong op1,
28 extern ulong cpu_post_makecr (long v);
30 static struct cpu_post_threex_s
36 } cpu_post_threex_table[] =
111 static unsigned int cpu_post_threex_size = ARRAY_SIZE(cpu_post_threex_table);
113 int cpu_post_test_threex (void)
117 int flag = disable_interrupts();
119 for (i = 0; i < cpu_post_threex_size && ret == 0; i++)
121 struct cpu_post_threex_s *test = cpu_post_threex_table + i;
123 for (reg = 0; reg < 32 && ret == 0; reg++)
125 unsigned int reg0 = (reg + 0) % 32;
126 unsigned int reg1 = (reg + 1) % 32;
127 unsigned int reg2 = (reg + 2) % 32;
128 unsigned int stk = reg < 16 ? 31 : 15;
129 unsigned long code[] =
132 ASM_ADDI(stk, 1, -24),
135 ASM_STW(reg0, stk, 8),
136 ASM_STW(reg1, stk, 4),
137 ASM_STW(reg2, stk, 0),
138 ASM_LWZ(reg1, stk, 12),
139 ASM_LWZ(reg0, stk, 16),
140 ASM_12X(test->cmd, reg2, reg1, reg0),
141 ASM_STW(reg2, stk, 12),
142 ASM_LWZ(reg2, stk, 0),
143 ASM_LWZ(reg1, stk, 4),
144 ASM_LWZ(reg0, stk, 8),
146 ASM_ADDI(1, stk, 24),
150 unsigned long codecr[] =
153 ASM_ADDI(stk, 1, -24),
156 ASM_STW(reg0, stk, 8),
157 ASM_STW(reg1, stk, 4),
158 ASM_STW(reg2, stk, 0),
159 ASM_LWZ(reg1, stk, 12),
160 ASM_LWZ(reg0, stk, 16),
161 ASM_12X(test->cmd, reg2, reg1, reg0) | BIT_C,
162 ASM_STW(reg2, stk, 12),
163 ASM_LWZ(reg2, stk, 0),
164 ASM_LWZ(reg1, stk, 4),
165 ASM_LWZ(reg0, stk, 8),
167 ASM_ADDI(1, stk, 24),
177 cpu_post_exec_22 (code, & cr, & res, test->op1, test->op2);
179 ret = res == test->res && cr == 0 ? 0 : -1;
183 post_log ("Error at threex test %d !\n", i);
189 cpu_post_exec_22 (codecr, & cr, & res, test->op1, test->op2);
191 ret = res == test->res &&
192 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
196 post_log ("Error at threex test %d !\n", i);