3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
12 * Shift instructions: rlwinm
14 * The test contains a pre-built table of instructions, operands and
15 * expected results. For each table entry, the test will cyclically use
16 * different sets of operand registers and result registers.
22 #if CONFIG_POST & CONFIG_SYS_POST_CPU
24 extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op1);
25 extern ulong cpu_post_makecr (long v);
27 static struct cpu_post_rlwinm_s
35 } cpu_post_rlwinm_table[] =
46 static unsigned int cpu_post_rlwinm_size = ARRAY_SIZE(cpu_post_rlwinm_table);
48 int cpu_post_test_rlwinm (void)
52 int flag = disable_interrupts();
54 for (i = 0; i < cpu_post_rlwinm_size && ret == 0; i++)
56 struct cpu_post_rlwinm_s *test = cpu_post_rlwinm_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 stk = reg < 16 ? 31 : 15;
63 unsigned long code[] =
66 ASM_ADDI(stk, 1, -16),
68 ASM_STW(reg0, stk, 4),
69 ASM_STW(reg1, stk, 0),
70 ASM_LWZ(reg0, stk, 8),
71 ASM_113(test->cmd, reg1, reg0, test->op2, test->mb, test->me),
72 ASM_STW(reg1, stk, 8),
73 ASM_LWZ(reg1, stk, 0),
74 ASM_LWZ(reg0, stk, 4),
80 unsigned long codecr[] =
83 ASM_ADDI(stk, 1, -16),
85 ASM_STW(reg0, stk, 4),
86 ASM_STW(reg1, stk, 0),
87 ASM_LWZ(reg0, stk, 8),
88 ASM_113(test->cmd, reg1, reg0, test->op2, test->mb,
90 ASM_STW(reg1, stk, 8),
91 ASM_LWZ(reg1, stk, 0),
92 ASM_LWZ(reg0, stk, 4),
104 cpu_post_exec_21 (code, & cr, & res, test->op1);
106 ret = res == test->res && cr == 0 ? 0 : -1;
110 post_log ("Error at rlwinm test %d !\n", i);
116 cpu_post_exec_21 (codecr, & cr, & res, test->op1);
118 ret = res == test->res &&
119 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
123 post_log ("Error at rlwinm test %d !\n", i);