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.
43 #if CONFIG_POST & CFG_POST_CPU
45 extern void cpu_post_exec_21 (ulong *code, ulong *cr, ulong *res, ulong op1);
46 extern ulong cpu_post_makecr (long v);
48 static struct cpu_post_two_s
53 } cpu_post_two_table[] =
86 static unsigned int cpu_post_two_size =
87 sizeof (cpu_post_two_table) / sizeof (struct cpu_post_two_s);
89 int cpu_post_test_two (void)
93 int flag = disable_interrupts();
95 for (i = 0; i < cpu_post_two_size && ret == 0; i++)
97 struct cpu_post_two_s *test = cpu_post_two_table + i;
99 for (reg = 0; reg < 32 && ret == 0; reg++)
101 unsigned int reg0 = (reg + 0) % 32;
102 unsigned int reg1 = (reg + 1) % 32;
103 unsigned int stk = reg < 16 ? 31 : 15;
104 unsigned long code[] =
107 ASM_ADDI(stk, 1, -16),
109 ASM_STW(reg0, stk, 4),
110 ASM_STW(reg1, stk, 0),
111 ASM_LWZ(reg0, stk, 8),
112 ASM_11(test->cmd, reg1, reg0),
113 ASM_STW(reg1, stk, 8),
114 ASM_LWZ(reg1, stk, 0),
115 ASM_LWZ(reg0, stk, 4),
117 ASM_ADDI(1, stk, 16),
121 unsigned long codecr[] =
124 ASM_ADDI(stk, 1, -16),
126 ASM_STW(reg0, stk, 4),
127 ASM_STW(reg1, stk, 0),
128 ASM_LWZ(reg0, stk, 8),
129 ASM_11(test->cmd, reg1, reg0) | BIT_C,
130 ASM_STW(reg1, stk, 8),
131 ASM_LWZ(reg1, stk, 0),
132 ASM_LWZ(reg0, stk, 4),
134 ASM_ADDI(1, stk, 16),
144 cpu_post_exec_21 (code, & cr, & res, test->op);
146 ret = res == test->res && cr == 0 ? 0 : -1;
150 post_log ("Error at two test %d !\n", i);
156 cpu_post_exec_21 (codecr, & cr, & res, test->op);
158 ret = res == test->res &&
159 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
163 post_log ("Error at two test %d !\n", i);