3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
12 * Shift instructions: srawi
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 op);
25 extern ulong cpu_post_makecr (long v);
27 static struct cpu_post_srawi_s
33 } cpu_post_srawi_table[] =
48 static unsigned int cpu_post_srawi_size = ARRAY_SIZE(cpu_post_srawi_table);
50 int cpu_post_test_srawi (void)
54 int flag = disable_interrupts();
56 for (i = 0; i < cpu_post_srawi_size && ret == 0; i++)
58 struct cpu_post_srawi_s *test = cpu_post_srawi_table + i;
60 for (reg = 0; reg < 32 && ret == 0; reg++)
62 unsigned int reg0 = (reg + 0) % 32;
63 unsigned int reg1 = (reg + 1) % 32;
64 unsigned int stk = reg < 16 ? 31 : 15;
65 unsigned long code[] =
68 ASM_ADDI(stk, 1, -16),
70 ASM_STW(reg0, stk, 4),
71 ASM_STW(reg1, stk, 0),
72 ASM_LWZ(reg0, stk, 8),
73 ASM_11S(test->cmd, reg1, reg0, test->op2),
74 ASM_STW(reg1, stk, 8),
75 ASM_LWZ(reg1, stk, 0),
76 ASM_LWZ(reg0, stk, 4),
82 unsigned long codecr[] =
85 ASM_ADDI(stk, 1, -16),
87 ASM_STW(reg0, stk, 4),
88 ASM_STW(reg1, stk, 0),
89 ASM_LWZ(reg0, stk, 8),
90 ASM_11S(test->cmd, reg1, reg0, test->op2) | BIT_C,
91 ASM_STW(reg1, stk, 8),
92 ASM_LWZ(reg1, stk, 0),
93 ASM_LWZ(reg0, stk, 4),
105 cpu_post_exec_21 (code, & cr, & res, test->op1);
107 ret = res == test->res && cr == 0 ? 0 : -1;
111 post_log ("Error at srawi test %d !\n", i);
117 cpu_post_exec_21 (codecr, & cr, & res, test->op1);
119 ret = res == test->res &&
120 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
124 post_log ("Error at srawi test %d !\n", i);