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 rA,rS
30 * Logic instructions: cntlzw
31 * Arithmetic instructions: extsb, extsh
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_twox_s
51 } cpu_post_twox_table[] =
84 static unsigned int cpu_post_twox_size = ARRAY_SIZE(cpu_post_twox_table);
86 int cpu_post_test_twox (void)
90 int flag = disable_interrupts();
92 for (i = 0; i < cpu_post_twox_size && ret == 0; i++)
94 struct cpu_post_twox_s *test = cpu_post_twox_table + i;
96 for (reg = 0; reg < 32 && ret == 0; reg++)
98 unsigned int reg0 = (reg + 0) % 32;
99 unsigned int reg1 = (reg + 1) % 32;
100 unsigned int stk = reg < 16 ? 31 : 15;
101 unsigned long code[] =
104 ASM_ADDI(stk, 1, -16),
106 ASM_STW(reg0, stk, 4),
107 ASM_STW(reg1, stk, 0),
108 ASM_LWZ(reg0, stk, 8),
109 ASM_11X(test->cmd, reg1, reg0),
110 ASM_STW(reg1, stk, 8),
111 ASM_LWZ(reg1, stk, 0),
112 ASM_LWZ(reg0, stk, 4),
114 ASM_ADDI(1, stk, 16),
118 unsigned long codecr[] =
121 ASM_ADDI(stk, 1, -16),
123 ASM_STW(reg0, stk, 4),
124 ASM_STW(reg1, stk, 0),
125 ASM_LWZ(reg0, stk, 8),
126 ASM_11X(test->cmd, reg1, reg0) | BIT_C,
127 ASM_STW(reg1, stk, 8),
128 ASM_LWZ(reg1, stk, 0),
129 ASM_LWZ(reg0, stk, 4),
131 ASM_ADDI(1, stk, 16),
141 cpu_post_exec_21 (code, & cr, & res, test->op);
143 ret = res == test->res && cr == 0 ? 0 : -1;
147 post_log ("Error at twox test %d !\n", i);
153 cpu_post_exec_21 (codecr, & cr, & res, test->op);
155 ret = res == test->res &&
156 (cr & 0xe0000000) == cpu_post_makecr (res) ? 0 : -1;
160 post_log ("Error at twox test %d !\n", i);