3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * Binary instructions instr rD,rA
30 * Logic instructions: neg
31 * Arithmetic instructions: addme, addze, subfme, subfze
33 * The test contains a pre-built table of instructions, operands and
34 * expected results. For each table entry, the test will cyclically use
35 * different sets of operand registers and result registers.
41 #if CONFIG_POST & CONFIG_SYS_POST_CPU
43 extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op1);
44 extern ulong cpu_post_makecr (long v);
46 static struct cpu_post_two_s
51 } cpu_post_two_table[] =
84 static unsigned int cpu_post_two_size =
85 sizeof (cpu_post_two_table) / sizeof (struct cpu_post_two_s);
87 int cpu_post_test_two (void)
91 int flag = disable_interrupts();
93 for (i = 0; i < cpu_post_two_size && ret == 0; i++)
95 struct cpu_post_two_s *test = cpu_post_two_table + i;
97 for (reg = 0; reg < 32 && ret == 0; reg++)
99 unsigned int reg0 = (reg + 0) % 32;
100 unsigned int reg1 = (reg + 1) % 32;
101 unsigned int stk = reg < 16 ? 31 : 15;
102 unsigned long code[] =
105 ASM_ADDI(stk, 1, -16),
107 ASM_STW(reg0, stk, 4),
108 ASM_STW(reg1, stk, 0),
109 ASM_LWZ(reg0, stk, 8),
110 ASM_11(test->cmd, reg1, reg0),
111 ASM_STW(reg1, stk, 8),
112 ASM_LWZ(reg1, stk, 0),
113 ASM_LWZ(reg0, stk, 4),
115 ASM_ADDI(1, stk, 16),
119 unsigned long codecr[] =
122 ASM_ADDI(stk, 1, -16),
124 ASM_STW(reg0, stk, 4),
125 ASM_STW(reg1, stk, 0),
126 ASM_LWZ(reg0, stk, 8),
127 ASM_11(test->cmd, reg1, reg0) | BIT_C,
128 ASM_STW(reg1, stk, 8),
129 ASM_LWZ(reg1, stk, 0),
130 ASM_LWZ(reg0, stk, 4),
132 ASM_ADDI(1, stk, 16),
142 cpu_post_exec_21 (code, & cr, & res, test->op);
144 ret = res == test->res && cr == 0 ? 0 : -1;
148 post_log ("Error at two test %d !\n", i);
154 cpu_post_exec_21 (codecr, & cr, & res, test->op);
156 ret = res == test->res &&
157 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
161 post_log ("Error at two test %d !\n", i);