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git.ipfire.org Git - people/ms/u-boot.git/blob - post/lib_ppc/two.c
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 & CFG_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
);