1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
11 * Shift instructions: rlwnm
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.
21 #if CONFIG_POST & CONFIG_SYS_POST_CPU
23 extern void cpu_post_exec_22 (ulong *code, ulong *cr, ulong *res, ulong op1,
25 extern ulong cpu_post_makecr (long v);
27 static struct cpu_post_rlwnm_s
35 } cpu_post_rlwnm_table[] =
46 static unsigned int cpu_post_rlwnm_size = ARRAY_SIZE(cpu_post_rlwnm_table);
48 int cpu_post_test_rlwnm (void)
52 int flag = disable_interrupts();
54 for (i = 0; i < cpu_post_rlwnm_size && ret == 0; i++)
56 struct cpu_post_rlwnm_s *test = cpu_post_rlwnm_table + i;
58 for (reg = 0; reg < 32 && ret == 0; reg++)
60 unsigned int reg0 = (reg + 0) % 32;
61 unsigned int reg1 = (reg + 1) % 32;
62 unsigned int reg2 = (reg + 2) % 32;
63 unsigned int stk = reg < 16 ? 31 : 15;
64 unsigned long code[] =
67 ASM_ADDI(stk, 1, -24),
70 ASM_STW(reg0, stk, 8),
71 ASM_STW(reg1, stk, 4),
72 ASM_STW(reg2, stk, 0),
73 ASM_LWZ(reg1, stk, 12),
74 ASM_LWZ(reg0, stk, 16),
75 ASM_122(test->cmd, reg2, reg1, reg0, test->mb, test->me),
76 ASM_STW(reg2, stk, 12),
77 ASM_LWZ(reg2, stk, 0),
78 ASM_LWZ(reg1, stk, 4),
79 ASM_LWZ(reg0, stk, 8),
85 unsigned long codecr[] =
88 ASM_ADDI(stk, 1, -24),
91 ASM_STW(reg0, stk, 8),
92 ASM_STW(reg1, stk, 4),
93 ASM_STW(reg2, stk, 0),
94 ASM_LWZ(reg1, stk, 12),
95 ASM_LWZ(reg0, stk, 16),
96 ASM_122(test->cmd, reg2, reg1, reg0, test->mb, test->me) |
98 ASM_STW(reg2, stk, 12),
99 ASM_LWZ(reg2, stk, 0),
100 ASM_LWZ(reg1, stk, 4),
101 ASM_LWZ(reg0, stk, 8),
103 ASM_ADDI(1, stk, 24),
113 cpu_post_exec_22 (code, & cr, & res, test->op1, test->op2);
115 ret = res == test->res && cr == 0 ? 0 : -1;
119 post_log ("Error at rlwnm test %d !\n", i);
125 cpu_post_exec_22 (codecr, & cr, & res, test->op1, test->op2);
127 ret = res == test->res &&
128 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
132 post_log ("Error at rlwnm test %d !\n", i);